WO2014061794A1 - Two-phase rectifier circuit system, and power generator system - Google Patents

Abstract

The present invention couples one end of an A phase coil (18a) to between two diodes (31a, 31b) of a first half-bridge (32a), couples one end of a B phase coil (18b) to between two diodes (31a, 31b) of a third half-bridge (32c), couples the other ends of the A phase coil (18a) and the B phase coil (18b) to between two diodes (31a, 31b) of a second half-bridge (32b), and provides a switching element (33) in order to change the state of connection of the A phase coil (18a) and the B phase coil (18b) so as to be in series or in parallel by changing the switching element (33) to on or off.

Description

Two-phase rectifier circuit system and generator system

The present invention relates to a two-phase rectifier circuit system and a generator system including the two-phase rectifier circuit system.
This application claims priority based on Japanese Patent Application No. 2012-231908 filed in Japan on October 19, 2012, the contents of which are incorporated herein by reference.

2. Description of the Related Art Conventionally, as a generator system mounted on a motorcycle, etc., a three-phase generator in which a three-phase coil is Y-connected or delta-connected, and a rectifier circuit to which one end of the three-phase coil is connected are provided. There is something. The rectifier circuit is configured by connecting three half bridges, each having two diodes connected in series, in parallel. One end of each of the three-phase coils is connected between two diodes of the half bridge.

In such a configuration, when the field pole rotates by driving a motorcycle or the like, an electromotive force corresponding to the number of rotations is generated in the three-phase coil. And the electric current which generate | occur | produces in a three-phase coil is rectified by a rectifier circuit, and is stored by a battery etc. (for example, refer patent document 1).

JP-A-1-117696

By the way, there is a case where a system cheaper than this generator system is required without requiring as much power as that obtained by a three-phase structure generator system. However, there is a problem that it is difficult to meet various demands because there are few variations in the generator system.

Accordingly, the present invention has been made in view of the above-described circumstances, and provides a two-phase rectifier circuit system and a generator system that can be provided at a low cost while suppressing power obtained from a generator system having a three-phase structure. To do.

According to the first aspect of the present invention, in a two-phase rectifier circuit system, a rectifier circuit in which three half bridges in which two diodes are connected in series are connected in parallel and a first alternating current is generated. A first-phase coil; a second-phase coil that generates a second alternating current; and a switch that performs an on / off switching operation; one end of the first-phase coil; and the second-phase coil One end of the coil is connected between the two diodes in the separate half bridges, and the other end of the first-phase coil and the other end of the second-phase coil are connected to the first-phase coil. One end of the coil and one end of the second phase coil are connected between the two diodes in the other half bridge not connected, and the switch of the first phase is switched by switching on and off of the switch. Co Switching and Le, a connection state between the coils of the second phase.

By configuring as described above, it is possible to obtain a current generated from a coil having a two-phase structure using a conventional three-phase rectifier circuit, and to control the switch on / off with a constant voltage, so that the two-phase structure is obtained. The magnitude of the current output from the coil can be changed. For this reason, the two-phase rectifier circuit system that suppresses the electric power obtained from the three-phase generator system can be provided at low cost.

According to a second aspect of the present invention, in the two-phase rectifier circuit system according to the first aspect of the present invention,
When the switch is on, the first phase coil and the second phase coil are connected in parallel, and when the switch is off, the first phase coil and the second phase coil are connected to each other. The switch was provided so as to be connected in series.

By configuring as described above, when the switch is on, the current output obtained from the two-phase coil can be increased, whereas when the switch is off, the switch is on compared to when the switch is on. Thus, the current output obtained from the two-phase coil can be reduced.

According to a third aspect of the present invention, in the two-phase rectifier circuit system according to the first aspect or the second aspect of the present invention, the other end of the first phase coil and the second phase coil One switch is provided between the other end and the other half bridge.

As described above, the magnitude of the current output from the two-phase coil can be changed only by providing one switch. Therefore, an inexpensive two-phase rectifier circuit system with a simple structure can be provided.

According to a fourth aspect of the present invention, in the generator system, the two-phase rectifier circuit system according to any one of the first to third aspects of the present invention, the coil of the first phase, and the first And a two-phase generator having a two-phase coil.

By configuring as described above, it is possible to provide a generator system that can suppress the electric power obtained from a three-phase generator system and can be provided at low cost.

According to the above two-phase rectifier circuit system, when the switch is on, the current output obtained from the two-phase coil can be increased, whereas when the switch is off, the switch is on. The current output obtained from the coil having the two-phase structure can be reduced as compared with the above.
As described above, the current generated from the two-phase coil can be obtained using the conventional three-phase rectifier circuit, and the current output from the two-phase coil by the on / off control of the switch is large. It can be changed. For this reason, the two-phase rectifier circuit system that suppresses the electric power obtained from the three-phase generator system can be provided at low cost.
Moreover, according to the aspect of the present invention described above, a generator system that suppresses the electric power obtained from the generator system having a three-phase structure can be provided at a low cost.

It is a block diagram of the generator system in the embodiment of the present invention. It is a top view of the two phase generator in the embodiment of the present invention. It is sectional drawing of the two-phase generator in embodiment of this invention. It is explanatory drawing which shows the flow of the electric current which generate | occur | produces in a two-phase generator and a rectifier circuit when the switching element in embodiment of this invention is turned ON. It is explanatory drawing which shows the flow of the electric current which generate | occur | produces in a two-phase generator and a rectifier circuit when the switching element in embodiment of this invention is turned ON. It is explanatory drawing which shows the flow of the electric current which generate | occur | produces in a two-phase generator and a rectifier circuit when the switching element in embodiment of this invention is turned ON. It is explanatory drawing which shows the flow of the electric current which generate | occur | produces in a two-phase generator and a rectifier circuit when the switching element in embodiment of this invention is turned ON. It is a wave form diagram of the electric current generated in the A phase coil and B phase coil when the switching element in the embodiment of the present invention is turned on. It is explanatory drawing which shows the flow of the electric current which generate | occur | produces in a two-phase generator when a switching element in embodiment of this invention is turned off, and a rectifier circuit. It is explanatory drawing which shows the flow of the electric current which generate | occur | produces in a two-phase generator when a switching element in embodiment of this invention is turned off, and a rectifier circuit. It is a wave form diagram of the electric current generated in the A phase coil and B phase coil when the switching element in the embodiment of the present invention is turned off. It is a graph which shows the change of the electric current value which generate | occur | produces in the two-phase generator in embodiment of this invention. It is a block diagram of the generator system in the modification of this invention.

(Generator system)
(Two-phase generator)
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of a generator system, FIG. 2 is a plan view of a two-phase generator, and FIG. 3 is a cross-sectional view of the two-phase generator.
As shown in FIG. 1, the generator system 1 is rectified by a two-phase generator 2, a rectifier circuit system 70 including an A-phase coil 18 a and a B-phase coil 18 b of the two-phase generator 2, and a rectifier circuit system 70. A battery 60 in which the stored current is stored, and a DC load 61 such as a light.

As shown in FIGS. 2 and 3, the two-phase generator 2 is an outer rotor type generator used in, for example, a motorcycle, and includes a flywheel 4 that rotates in synchronization with a crankshaft (not shown) of an engine, A stator 5 fixed to the illustrated engine block is provided, and two-phase coils 18a and 18b (see FIG. 1) of an A-phase coil 18a and a B-phase coil 18b are wound around the stator 5.

The flywheel 4 includes a base portion 50 formed in a substantially disc shape, and a flywheel body 51 fixed to the stator 5 side (left side in FIG. 2) of the base portion 50. A boss portion 52 is formed so as to protrude toward the stator 5 side at a substantially radial center of the base portion 50. A through hole 53 into which a crankshaft (not shown) is inserted is formed at the radial center of the boss portion 52.

A key groove 54 is formed in the through hole 53, while a key (not shown) that engages with the key groove 53 is provided on a crank shaft (not shown). Thereby, the base part 50 and a crankshaft not shown become a state which cannot be relatively rotated. Furthermore, the base part 50 is fixed to the base part 50 and the crankshaft by screwing a nut or the like into the tip of the crankshaft.
A plurality of insertion holes 55 are formed in the base portion 50 at equal intervals in the circumferential direction. The insertion hole 55 is formed so as to penetrate the base portion 50 in the thickness direction. A rivet 27 for fixing the flywheel main body 51 and the base portion 50 is inserted into the insertion hole 55.

The flywheel body 51 is formed in a bottomed cylindrical shape from a metal having magnetism. A through hole 51b is formed in the bottom wall 51a of the flywheel main body 51 at a substantially central portion in the radial direction. The boss portion 52 of the base portion 50 and a crankshaft (not shown) are inserted into the through hole 51b. Further, an insertion hole 51 c that penetrates in the thickness direction is formed in the bottom wall 51 a of the flywheel main body 51 at a position corresponding to the insertion hole 55 of the base portion 50.

The flywheel body 51 and the base part 50 are integrated by inserting the rivet 27 into the insertion holes 55 and 51c and buckling and deforming the tip of the rivet 27.
The peripheral wall 51d of the flywheel main body 51 is provided with a permanent magnet 8 magnetized to 12 poles along the circumferential direction on the inner peripheral surface side. For example, a ferrite magnet is used as the permanent magnet 8.

The stator 5 disposed inside the peripheral wall 51d of the flywheel main body 51 has a stator core 17 formed by laminating plate materials such as electromagnetic steel plates in the axial direction. The stator core 17 has a substantially annular stator body 17a. In order to avoid interference with the boss portion 52 of the flywheel 4 and a crankshaft (not shown), a clearance hole 17b is formed in the substantially radial center of the stator body 17a.

Further, a plurality of bolt insertion holes 20 are formed in the stator body 17a along the circumferential direction. Bolts (not shown) are inserted into these bolt insertion holes 20 and the stator 5 is fastened and fixed to the engine block.
Sixteen teeth 16 protruding outward in the radial direction are provided side by side in the circumferential direction on the outer peripheral portion of the stator body 17a. And between each tooth | gear 16, the dovetail slot 21 is formed, respectively.

Here, in the two-phase generator 2, when the number of magnetic poles is P, the number of teeth 16 is T, and n is a natural number, the number P of magnetic poles and the number T of teeth 16 are
P: T = 4n: 4 (n + 1) (1)
It is set to satisfy.
In the two-phase generator 2 of the present embodiment, twelve permanent magnets 8 are provided so that magnetic poles appear alternately in the circumferential direction, so the number P of magnetic poles is 12. Further, since the number T of the teeth 16 is set to 16, when n = 3,
P: T = 4 × 3: 4 (3 + 1) = 12: 16
Thus, the expression (1) is satisfied.

In addition, a corresponding A-phase coil 18a or B-phase coil 18b is passed through each slot 21, and an A-phase coil 18a or B-phase coil 18b is passed from above the insulator 40 attached to the stator core 17 to each tooth 16. Is wound.
Here, the teeth 16 are set so that two teeth 16 forming a slot 21 (refer to part A in FIG. 2) that is shifted by 90 ° in mechanical angle are set as one of the two phases 16. The teeth 16 (see the portion B in FIG. 2) are set as the teeth 16 of the other phase.

That is, for example, an A-phase coil 18a is wound around the eight teeth 16 existing in the portion A in FIG. For example, a B-phase coil 18b is wound around the eight teeth 16 existing in the B portion in FIG. As a result, the two-phase generator 1 includes a two-phase magnetic circuit whose phase is shifted by 90 °.

The terminals of the A-phase coil 18 a and the B-phase coil 18 b that constitute such a magnetic circuit are led to the vicinity of the pulling position of the harness 26 extending from the battery 60 and the DC load 61 and connected to the harness 26.
Under such a configuration, when the flywheel 4 rotates via a crankshaft (not shown), the amount of magnetic flux passing through the teeth 16 changes. The change in the amount of magnetic flux becomes an electromotive force, and current is generated in the A-phase coil 18a and the B-phase coil 18b. Then, this current is rectified via the rectifier circuit 3 of the rectifier circuit system 70 and stored in the battery 60 or used for a DC load 61 such as a light.

(Rectifier circuit system)
(Rectifier circuit)
Returning to FIG. 1, the A-phase coil 18 a and the B-phase coil 18 b constitute a part of the rectifier circuit system 70. The rectifier circuit system 70 includes the rectifier circuit 3 connected to the A phase coil 18a and the B phase coil 18b in addition to the A phase coil 18a and the B phase coil 18b.

The rectifier circuit 3 is configured by connecting three half bridges 32a, 32b, and 32c, in which two diodes 31a and 31b are connected in series, in parallel. A battery 60 and a DC load 61 are connected to the rectifier circuit 3 so as to be in parallel with the half bridges 32a, 32b, and 32c. That is, the three half bridges 32a, 32b, and 32c are in a state in which the diode 31a is disposed on the high potential side and the diode 31b is disposed on the low potential side. Note that the rectifier circuit 3 configured in this way has the same configuration as the rectifier circuit used in the conventional three-phase generator.

Of the three half bridges 32a, 32b and 32c, one end of the A-phase coil 18a is connected to the first half bridge 32a between the two diodes 31a and 31b. Further, of the three half bridges 32a, 32b, and 32c, one end of the B-phase coil 18b is connected to the third half bridge 32c. The other ends of the A-phase coil 18a and the B-phase coil 18b are connected to the second half bridge 32b disposed between the first half bridge 32a and the third half bridge 32c.

Further, a switching element 33 is provided between the other ends of the A-phase coil 18a and the B-phase coil 18b and the second half bridge 32b. The switching element 33 is not particularly limited as long as it can be switched on and off. For example, a relay or the like can be used, or a thyristor can be used. In addition, thyristors can be used as the diodes 31a and 31b.

By switching on / off of the switching element 33, the connection state between the A-phase coil 18a and the B-phase coil 18b and the rectifier circuit 3 changes.
That is, when the switching element 33 is on, the A phase coil 18a is connected between the first half bridge 32a and the second half bridge 32b, while the B phase coil 18b is connected to the third half bridge 32c and the second half bridge 32c. It is connected between the half bridge 32b. Thereby, with respect to the rectifier circuit 3, the A-phase coil 18a and the B-phase coil 18b are connected in parallel.

On the other hand, when the switching element 33 is off, the A-phase coil 18a and the B-phase coil 18b are connected in series between the first half bridge 32a and the third half bridge 32c.
Thus, by switching on / off of the switching element 33, the connection state between the A-phase coil 18a and the B-phase coil 18b and the rectifier circuit 3 changes, so that the battery 60 and the direct current from the two-phase generator 2 are changed. The current value output to the load 61 can be changed (details will be described later).

In addition, between the rectifier circuit 3 and the battery 60 or the DC load 61, an ammeter 34 for measuring a current value supplied to the battery 60 or the DC load 61, and a voltage value charged in the battery 60 A voltmeter 35 for measuring is connected. On / off control of the switching element 33 is performed based on the measurement results of the ammeter 34 and the voltmeter 35 (details will be described later).

(Change of current value based on on / off control of switching element)
Next, a change in the current value based on the on / off control of the switching element 33 will be described with reference to FIGS. 4A to 7.
First, the current generated in the two-phase generator 2 and the rectifier circuit 3 when the switching element 33 is turned on will be described.
FIG. 4A to FIG. 4D are explanatory diagrams showing the flow of current generated in the two-phase generator and the rectifier circuit when the switching element is turned on, and show respective patterns of current directions. FIG. 5 is a waveform diagram obtained by full-wave rectifying the currents generated in the A-phase coil and the B-phase coil when the switching element is turned on. Reference numerals (A) to (D) in FIG. This corresponds to FIG. 4D. In FIG. 5, L1 indicates a current waveform obtained by full-wave rectifying the current generated in the A-phase coil and the B-phase coil.

Here, as shown in FIGS. 4A to 5, when the switching element 33 is turned on, the A-phase coil 18a and the B-phase coil 18b are connected in parallel to the rectifier circuit 3. There are the following four patterns of current flow generated in the generator 2 and the rectifier circuit 3.

(1) A pattern in which the current IAlh flows through the A-phase coil 18a from the low potential side toward the high potential side, and the current IBhl flows through the B-phase coil 18b from the high potential side toward the low potential side (see FIG. 4A).
(2) A pattern in which the current IAlh flows in the A-phase coil 18a from the low potential side to the high potential side, and the current IBlh flows in the B-phase coil 18b from the low potential side to the high potential side (see FIG. 4B).
(3) A pattern in which the current IAhl flows through the A phase coil 18a from the high potential side toward the low potential side, and the current IBlh flows through the B phase coil 18b from the low potential side toward the high potential side (see FIG. 4C).
(4) A pattern in which the current IAhl flows through the A-phase coil 18a from the high potential side toward the low potential side, and the current IBhl flows through the B-phase coil 18b from the high potential side toward the low potential side (see FIG. 4D).
An alternating current generated by repeatedly performing these four patterns is rectified into a direct current through the diodes 31a and 31b of the rectifying circuit 3, and then synthesized. Then, the current merged in the battery 60 is stored, or the current is used for the DC load 61.

Next, the current generated in the two-phase generator 2 and the rectifier circuit 3 when the switching element 33 is turned off will be described.
6A and 6B are explanatory diagrams showing the flow of current generated in the two-phase generator and the rectifier circuit when the switching element is turned off, and each showing a pattern of the direction of current. FIG. 7 is a waveform diagram of currents generated in the A-phase coil and the B-phase coil when the switching element is turned off. Reference numerals (A) and (B) in the figure correspond to FIGS. 6A and 6B. is doing. In FIG. 7, L2 indicates a combined waveform of currents generated in the A-phase coil and the B-phase coil, and L3 full-wave rectifies the combined waveform of currents generated in the A-phase coil and the B-phase coil. The current waveform obtained by this is shown.

Here, as shown in FIGS. 6A to 7, when the switching element 33 is turned off, the A-phase coil 18a and the B-phase coil 18b are connected in series to the rectifier circuit 3. There are the following two patterns of current flow generated in the generator 2 and the rectifier circuit 3.
(1) A pattern in which a current IBA flows from the B-phase coil 18b toward the A-phase coil 18a (see FIG. 6A).
(2) A pattern in which a current IAB flows from the A-phase coil 18a to the B-phase coil 18b (see FIG. 6B).

An alternating current generated by repeatedly performing these two patterns is rectified into a direct current via the diodes 31a and 31b of the rectifying circuit 3, and then synthesized. Then, the current merged in the battery 60 is stored, or the current is used for the DC load 61.
Thus, the current value generated in the two-phase generator 2 when the switching element 33 is turned off is smaller than the current value generated in the two-phase generator 2 when the switching element 33 is turned on.

More specifically, a description will be given based on FIG.
FIG. 8 shows the current value generated in the two-phase generator when the vertical axis is the current value generated in the two-phase generator and the horizontal axis is the rotational speed of the flywheel 4 (crankshaft) of the two-phase generator 2. It is a graph which shows the change of this, Comparing with the case where a switching element is turned on and when it is turned off.
As shown in the figure, the current value generated in the two-phase generator 2 when the rotational speed of the flywheel 4 exceeds a predetermined value is such that the switching element 33 is turned off compared to when the switching element 33 is turned on. It can be confirmed that the current value in this case is about ½.

(Battery storage method)
Next, a method for storing power in the battery 60 using the two-phase generator 2 will be described with reference to FIG.
As shown in the figure, the charged amount of the battery 60 is measured by a voltmeter 35. From the measurement result by the voltmeter 35, when the amount of charge of the battery 60 is extremely small with respect to the full charge, the switching element 33 is in the ON state. In this state, when the flywheel 4 rotates via a crankshaft (not shown), the battery 60 is rapidly charged. The current value supplied to the battery 60 is measured by the ammeter 34. When the battery 60 approaches full charge, the switching element 33 is turned off. Then, the current value supplied to the battery 60 decreases, the battery 60 is gradually charged, and finally becomes fully charged.

On the other hand, when the amount of power stored in the battery 60 is not so small as compared with the full charge, the switching element 33 is in the off state. That is, the battery 60 is prevented from being overcharged by suppressing the current value supplied to the battery 60 from the beginning of the rotation of the flywheel 4.
Note that when the charged amount of the battery 60 reaches a full charge or when a predetermined charged amount is reached, the switching element 33 is turned off. Thereafter, the current generated by the two-phase generator 2 is supplied only to the DC load 61.

(effect)
Therefore, according to the above-described embodiment, the rectifier circuit 3 having the same configuration as the rectifier circuit used in the conventional three-phase structure generator is used, and the A-phase coil 18a and the B-phase coil of the two-phase generator 2 are used. The current generated from 18 b can be obtained, and the current value output from the two-phase generator 2 to the battery 60 and the DC load 61 can be changed by the on / off control of the switching element 33. For this reason, the generator system 1 which suppressed the electric power obtained from the generator system using the generator of the conventional three-phase structure can be provided at low cost.

Further, by providing the switching element 33 between the other end of the A phase coil 18a and the B phase coil 18b and the second half bridge 32b, the A phase coil 18a and the B phase coil 18b are connected to the rectifier circuit 3. Can be connected in series or in parallel, so that an inexpensive generator system 1 with a simple structure can be provided.

The present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention.
For example, in the above-described embodiment, the generator system 1 is connected to the rectifier circuit 3 connected to the two-phase generator 2, the rectifier circuit 3 connected to the two-phase generator 2, and rectified by the rectifier circuit 3. A case has been described in which the battery 60 in which the stored current is stored and the DC load 61 such as a light are provided. However, the DC load 61 is not limited to the light, and the present embodiment can be applied to various DC loads.

Further, in the above-described embodiment, when the battery 60 is charged and the stored amount of the battery 60 is extremely small with respect to the full charge, after the switching element 33 is turned on and the battery 60 is rapidly charged, The case where the switching element 33 is turned off to suppress the output of the two-phase generator 2 has been described. However, the present invention is not limited to this, and the current may be gradually supplied to the battery 60 while the switching element 33 is repeatedly turned on and off.

Furthermore, in the above-described embodiment, the case where the A-phase coil 18a and the B-phase coil 18b are connected in parallel to the rectifier circuit 3 by turning off the switching element 33 has been described. The case where the A-phase coil 18a and the B-phase coil 18b are connected in series to the rectifier circuit 3 by turning on the switching element 33 has been described.
However, the present invention is not limited to this, and the connection state between the A-phase coil 18a and the B-phase coil 18b may be switched by switching the switching element 33 on and off. That is, when the switching element 33 is turned on, the A-phase coil 18a and the B-phase coil 18b are connected in parallel to the rectifier circuit 3, and when the switching element 33 is turned off, the A-phase coil 18a and the B-phase coil 18b are turned off. Coil 18a and B phase coil 18b may be connected in series.

In the above-described embodiment, the A-phase coil 18a is wound around the eight teeth 16 that form the slots 21 (see section A in FIG. 2) that are offset by 90 ° in mechanical angle, while the other teeth 16 ( The case where the B-phase coil 18b is wound around the B-phase coil in FIG. 2 and the phase difference between the current generated in the A-phase coil and the current generated in the B-phase coil is 90 ° has been described. However, the present invention is not limited to this, and the phase difference between the current generated in the A-phase coil and the current generated in the B-phase coil may be 180 °. With this configuration, the deflection of the current waveform after full-wave rectification can be increased.

Furthermore, in the above-described embodiment, the switching element 33 is provided between the other ends of the A-phase coil 18a and the B-phase coil 18b and the second half bridge 32b, so that the A-phase coil 18a is connected to the rectifier circuit 3. A case has been described in which the B-phase coil 18b is connected in series or in parallel. However, the present invention is not limited to this, and it is only necessary that the connection state of the A-phase coil 18a and the B-phase coil 18b with respect to the rectifier circuit 3 is changed by switching the switching element 33 on and off. .

(Modification)
More specifically, a description will be given based on FIG.
FIG. 9 is a block diagram of a generator system in a modification of the above-described embodiment. In addition, about the same aspect as the above-mentioned embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
As shown in the figure, the difference between the generator system 1 of the above-described embodiment and the generator system 101 in the modified example is that the generator system 101 in the modified example includes an A-phase coil 18a and a B-phase coil 18b. The switching element 33 is not provided between the other end of the first half bridge 32b and the second half bridge 32b. Of the three half bridges 32a, 32b, and 32c, two switching elements 33 are provided on the second half bridge 32b. It is in the point provided.

More specifically, the switching element 33 is provided on the higher potential side than the diode 31a of the second half bridge 32b, and the switching element 33 is provided on the lower potential side than the diode 31b. These two switching elements 33 are configured to be switched on / off simultaneously.

With this configuration, the A-phase coil 18a and the B-phase coil 18b are connected in parallel to the rectifier circuit 3 when the switching element 33 is on, and rectified when the switching element 33 is off. An A-phase coil 18 a and a B-phase coil 18 b are connected in series to the circuit 3.
Therefore, according to the above-described modification, the same effect as that of the above-described embodiment can be obtained.

In the above-described modification, the case where the two switching elements 33 are configured to be switched on / off simultaneously has been described. However, the present invention is not limited to this, and when one of the two switching elements 33 is in the on state and the other switching element 33 is in the off state, the A phase coil 18a and the B phase The coil 18b may be connected in series or in parallel.

In the above-described embodiment, the case where one switching element 33 is provided between the other end of the A-phase coil 18a and the B-phase coil 18b and the second half bridge 32b has been described. Furthermore, in the above-described modification, the case where the two switching elements 33 are provided on the second half bridge 32b has been described. However, the place where the switching element 33 is provided is not limited to the place described in the above-described embodiments and modifications, and can be arbitrarily set. Moreover, you may provide the switching element 33 in all the half bridges 32a, 32b, and 32c.

According to the above two-phase rectifier circuit system, when the switch is on, the current output obtained from the two-phase coil can be increased, whereas when the switch is off, the switch is on. The current output obtained from the coil having the two-phase structure can be reduced as compared with the above.
As described above, the current generated from the two-phase coil can be obtained using the conventional three-phase rectifier circuit, and the current output from the two-phase coil by the on / off control of the switch is large. It can be changed. For this reason, the two-phase rectifier circuit system that suppresses the electric power obtained from the three-phase generator system can be provided at low cost.
Moreover, according to the aspect of the present invention described above, a generator system that suppresses the electric power obtained from the generator system having a three-phase structure can be provided at a low cost.

DESCRIPTION OF SYMBOLS 1,101 ... Generator system 2 ... Two-phase generator 3 ... Rectification circuit 18a ... A phase coil (1st phase coil)
18b ... B phase coil (second phase coil)
31a, 31b ... Diode 32a ... First half bridge (half bridge)
32b ... 2nd half bridge (other half bridge)
32c ... Third half bridge (half bridge)
33 ... Switching element (switch)
70 ... Rectifier circuit system

Claims (7)

A rectifier circuit in which three half bridges in which two diodes are connected in series are connected in parallel;
A first phase coil for generating a first alternating current;
A second phase coil for generating a second alternating current;
With a switch that switches on and off,
One end of the first phase coil and one end of the second phase coil are connected between the two diodes in the separate half bridges, respectively.
The other half bridge in which the other end of the first phase coil and the other end of the second phase coil are connected to one end of the first phase coil and one end of the second phase coil. Connected between the two diodes in
A two-phase rectifier circuit system that switches a connection state between the first-phase coil and the second-phase coil by switching on and off the switch. When the switch is on, the first phase coil and the second phase coil are connected in parallel, and when the switch is off, the first phase coil and the second phase coil are connected to each other. The two-phase rectifier circuit system according to claim 1, wherein the switch is provided so as to be connected in series. 2. The two-phase rectifier circuit system according to claim 1, wherein one switch is provided between the other end of the first-phase coil, the other end of the second-phase coil, and the other half bridge. . 3. The two-phase rectifier circuit system according to claim 2, wherein one switch is provided between the other end of the first phase coil, the other end of the second phase coil, and the other half bridge. 4. . A two-phase rectifier circuit system according to claim 1;
A generator system comprising: a first-phase coil; and a two-phase generator having the second-phase coil. A two-phase rectifier circuit system according to claim 2;
A generator system comprising: a first-phase coil; and a two-phase generator having the second-phase coil. A two-phase rectifier circuit system according to claim 3;
A generator system comprising: a first-phase coil; and a two-phase generator having the second-phase coil.

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