JPH11332007A - Drives for series hybrid vehicles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely absorb the regenerative current generated when braking a of hybrid car, while preventing overcharging into its accumulation means. SOLUTION: Using an inverter 40 which is bidirectionally capable of feeding a power, the powers generated in motors 32 driven by wheels 33 are inputted to a generator 31 when the state of the charging into an accumulation means 42 is impossible, when braking a series type hybrid car. Thereby, by having the generator 1 operate as a motor, its regenerative current is consumed using as a load the rotational resistance of an engine 30 connected with the generator 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving apparatus for a series hybrid electric vehicle in which the output of an internal combustion engine is converted into electric power by a generator, and the electric power is used to drive a motor to run the vehicle.

[0002]

2. Description of the Related Art Hybrid vehicles are classified into a series type and a parallel type. In order to improve the energy use efficiency of both types of hybrid vehicles, electric energy is generated by a motor which acts as a generator by using the rotational energy of wheels at the time of braking of the vehicle. And charge the battery or capacitor.

Conventionally, a series-type hybrid vehicle driving device has the following configuration. In FIG. 5, reference numeral 10 denotes an engine, 11 denotes a generator driven by the engine 10 to generate AC power, and 12 denotes an inverter device.
A rectifier 13 for rectifying the output current of the power supply, a large-capacity capacitor 14 for storing electric power, and a switching arm unit 15 for converting DC power from the rectifier 13 and the capacitor 14 into AC having a predetermined frequency. Reference numeral 16 denotes two AC motors for driving the wheels 17, and reference numeral 20 denotes control means for controlling the inverter device 12.

[0004] In this embodiment, the control means 20 is based on signals from a sensor 21 for detecting a state of an accelerator pedal, a sensor 22 for detecting a state of a brake pedal, and a sensor 23 for detecting a drive current of the electric motor 16. A gate signal having a predetermined waveform is output to the switching arm 15 of the inverter device 12.

[0005] According to the driving apparatus for a series-type hybrid vehicle according to this example, the AC power generated by the generator 11 driven by the engine 10 is rectified by the rectifier 13 and stored in the capacitor 14. The power is converted into predetermined AC power by the switching arm unit 15 controlled by the control means 20 and supplied to the electric motor 16.

In the driving apparatus for a series-type hybrid vehicle according to this embodiment, when the vehicle is running, the control means 20 controls the switching arm 15 in accordance with the operation state of the accelerator pedal and the brake pedal. By transmitting the gate signal having the waveform, the switching arm unit 15 causes the AC power of a predetermined frequency to
6 to drive the electric motor 16.

When the vehicle is in a braking state in which the driver does not operate the accelerator pedal, the control means 20
Stops the output of the gate signal to the switching arm 15. Then, the switching arm 15 operates as a rectifier, the supply of AC power to the motor 16 is stopped, and the power generated by the motor 16 rotated by the wheels 17 is rectified to charge the capacitor 14. .

[0008]

As described above, in the hybrid vehicle according to the present embodiment, when the vehicle goes down a long hill, the control means 20 does not supply the driving power to the electric motor 16 and rotates the wheel 17. The electric motor 16 is rotated by power, and the electric motor 16 operates as a generator to regenerate electric energy generated. However, since the capacity of the capacitor 14 is limited, not all of the regenerated energy can be absorbed and stored as electric power.

When the battery or the capacitor is fully charged and the battery or the capacitor is charged, the battery or the capacitor may be damaged. For this reason, when the battery and the capacitor are fully charged, regenerative braking cannot be performed.

[0010] Further, in the parallel type hybrid vehicle, since the engine and the wheels are connected, it is possible to use an engine brake that uses the friction of the engine as a load, whereas in the series type hybrid vehicle, Since the engine and axle are not mechanically connected, the mechanical resistance of the engine cannot be used as the braking force and the load on the foot brake increases, so it is necessary to increase the capacity of the foot brake. is there.

The present invention has been made in order to solve such a conventional technical problem. A series in which the output of an internal combustion engine is converted into electric power by a generator, and the electric motor is driven by the electric power to drive the vehicle. In a hybrid electric vehicle drive device of the type, the regenerative current generated when the vehicle is braked can be reliably absorbed while preventing overcharging of the storage means, and the regenerative current is generated regardless of the state of the storage means. It is an object of the present invention to provide a drive device for a series hybrid vehicle that can perform braking.

[0012]

Means for solving the above problems in the present invention are as follows.

The invention according to claim 1 of the present application comprises an internal combustion engine 30, a generator 31 driven by the internal combustion engine, and an electric motor 32 driven by electric power from the generator 31 to drive wheels 33. An inverter 40 for controlling the power from the generator 31 and outputting the electric power to the motor 32, and control means 46 for controlling the inverter, wherein the inverter 40 is connected to the generator 31. A motor-side switching arm 41, a power storage means 42 charged with electric power from the generator 31, and a motor-side switching arm 43 connected to the motor 32. The control means 46 includes: 42 and the state of the accelerator pedal are detected, and gate signals are output to the switching arm 41 on the generator side and the switching arm 43 on the motor side. , When the vehicle is traveling with the state,
The gate signal to the generator-side switching arm 41 is turned off to operate as a rectifier, and the gate signal to the motor-side switching arm 43 is output to control the drive of the motor 32, and the vehicle is brought into a braking state. And when the power storage means 42 is in a state where power can be stored,
The gate signal to the generator-side switching arm 41 is turned off to operate as a rectifier, and the gate signal to the motor-side switching arm 43 is turned off.
When the vehicle is in a braking state and the power storage means 42 cannot store power, the generator-side switching is performed. A drive device for a series-type hybrid vehicle that controls a gate signal to the arm portion 41 and turns off a gate signal to be sent to the motor-side switching arm portion 43 to turn off the internal combustion engine 30 by driving the generator 31 as an electric motor. It is.

According to the driving device for a series hybrid vehicle according to the first aspect of the present invention, when the vehicle is in a running state in which the accelerator pedal is operated by the driver, the control means 46 controls the switching arm of the inverter device 40 on the generator side. The gate signal to the unit 41 is turned off to operate as a rectifier, and a gate signal having a predetermined waveform is output to the motor-side switching arm unit 43 to drive and control the motor 32.

Thus, the inverter device 40 supplies the electric power from the generator 31 to the electric motor 32 and charges the surplus electric power to the electric storage means 42 or the electric power of the electric generator 31 in accordance with the running state of the automobile. And the electric power charged by the electric storage means 42 are supplied to the electric motor 32.

On the other hand, when the driver does not operate the accelerator pedal and the vehicle is in a braking state, the control means 46
When it is determined that the power storage means 42 is still in a chargeable state, the gate signal to the generator-side switching arm 41 of the inverter device 40 is turned off to operate as a rectifier, and to the motor-side switching arm 43. The gate signal of the motor 3
2 is not supplied with power. Thereby, the electric motor 32 is driven by the wheels 33, and the electric motor 32 operates as a generator to generate electric power to generate a braking force. Then, in the inverter device 40, the AC power from the electric motor 32 is rectified by the electric motor-side switching arm 43 operating as a rectifier, and the electric storage means 42 is charged.

At this time, the gate signal to the generator-side switching arm 41 is in the OFF state, the generator-side switching arm 41 operates as a rectifier, and the voltage applied to the generator-side switching arm 41 is inverted. Electric power from the motor-side switching arm 43, which is a voltage, does not flow through the generator 31.

In the braking state of the vehicle, when the control means 46 determines that the power storage means 42 is in a charging-disabled state, the control means 46 sets a gate signal to the generator-side switching arm 41 of the inverter device 40 to an OFF state to serve as a rectifier. At the same time as the operation, a predetermined gate signal is output as a gate signal to the motor-side switching arm 43 so that a predetermined AC power can be supplied to the generator.

In this state, the motor 32 operates as a generator to generate AC power.
The AC power from the motor is rectified by the motor-side switching arm 43 operating as a rectifier, and is output to the generator 31 as AC by the generator-side switching arm 41.

Then, alternating-current power having a predetermined waveform is input to the generator, the generator operates as a motor, the generator rotates an output shaft of the internal combustion engine against internal friction of the internal combustion engine, and converts electric energy to the internal combustion engine. Released as heat energy generated inside the engine. Thus, the regenerative braking force can be generated in the electric motor, and no excessive power is supplied to the power storage unit.

The invention according to claim 2 of the present application provides an internal combustion engine 30 and a generator 31 driven by the internal combustion engine 30.
And an electric motor 32 driven by electric power from the generator 31
An inverter device 60 for controlling the electric power from the generator 31 and outputting the electric power to the electric motor 32;
0, and the inverter device 60 includes a rectifier 61 connected to the generator 31;
Power storage means 62 charged with the electric power from the generator, a resistor 63 connected in parallel with the power storage means, switching means 64 for switching between the power storage means 62 and the resistor 63
And a switching arm unit 65 connected to the electric motor 32. The control unit 66 includes the power storage unit 62.
And the state of the accelerator pedal are detected, and a gate signal to the switching arm section 65 is controlled.
The switching control of the switching means 64 is performed, and when the vehicle is in a running state, the switching means 64 is switched to the power storage means 62.
Side, and outputs a gate signal to the switching arm 65 to drive and control the motor 32. When the vehicle is in a braking state and the power storage means 62 is in a state where power can be stored, A switching signal is output to set the switching means 64 to the power storage means 62 side, and a gate signal to the switching arm 65 is turned off to operate as a rectifier, and the electric power generated by the motor 32 by the rotation of the wheels 33 is stored in the power storage means 62. When the vehicle is in a braking state and the power storage means 62 is unable to store power, a switching signal for setting the switching means 64 to the resistor 63 side and a gate signal transmitted to the switching arm section 65 are output. In which the power generated by the electric motor 32 due to the rotation of the wheel 33 is consumed by the resistor 63 in the OFF state. It is a drive apparatus of a hybrid vehicle.

According to the driving device for a series-type hybrid vehicle described in claim 2, when the driver operates the accelerator pedal, the control means 66 controls the switching arm section 6 of the inverter device 60.
5, a gate signal having a predetermined waveform is output to drive and control the motor 32, and the switching means 64 is set to the power storage means 62 side.

Thus, the inverter device 60 charges the surplus power to the power storage means 62 while supplying the electric power from the generator 31 to the electric motor 32 or adjusts the electric power of the And the electric power charged by the electric storage means 62 are supplied to the electric motor 32.

On the other hand, when the driver does not operate the accelerator pedal and the vehicle is in a braking state, the control means 66
When it is determined that the power storage means 62 is still in a chargeable state, the gate signal to the switching arm section 65 is turned off to turn off the power supply to the electric motor 32, and the state of the switching means 64 is changed to the power storage means. Side. Thereby, the electric motor 32 is driven by the wheels 33, and the electric motor 32 operates as a generator to generate electric power to generate a braking force. Then, in the inverter device 60, the AC power from the electric motor 32 is rectified by the switching arm unit 65 that operates as a rectifier, and the power storage unit 62 is charged.

At this time, the voltage applied to the rectifier 61 is a reverse voltage, and the electric power from the switching arm 65 does not flow to the generator 31 side.

In the braking state of the vehicle, the control means 66 switches the switching means 64 to the resistor 63 when it determines that the power storage means 62 is in the charging disabled state.
In this state, the electric motor 32 operates as a generator to generate AC power, and the inverter device 60 rectifies the AC power from the electric motor by the switching arm 65 operating as a rectifier, and through the switching means 64. The electric energy is applied to the resistor 63 and emitted as heat energy. As a result, the electric motor 32 can generate regenerative braking force and does not supply excessive power to the power storage means.

[0027]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a driving device for a series hybrid vehicle according to the present invention.

[First Embodiment] FIG. 1 shows a configuration of a drive device of a series hybrid vehicle according to the present embodiment.

As shown in FIG. 1, the drive system for a series-type hybrid vehicle according to the present embodiment includes an internal combustion engine 30, a generator 31 connected to and driven by the internal combustion engine 30.
A motor 32 that operates with the power from the generator 31 and drives the wheels 33; an inverter 40 that controls the power from the generator 31 and outputs the power to the motor 32; and a control unit 46 that controls the inverter. It has.

In this embodiment, the internal combustion engine 30 can be a gasoline or diesel engine, and a permanent magnet type synchronous generator can be used as a generator.
The generator 31 operates as an electric motor when supplied with electric power. In addition, the electric motor 32
It is possible to use a permanent magnet type synchronous motor or an induction motor, and it also operates as a generator by rotating the wheels 33.

The inverter device 40 is connected to the generator 3
A generator-side switching arm 41 connected to 1;
Power storage means 42 charged with electric power from the generator 31
And a motor-side switching arm 43 connected to the motor 32. In this example, the generator-side switching arm 41 and the motor-side switching arm 43 are, for example, a voltage-type three-phase AC 6-arm type, and other types of switching arms may be used. Can be.

In this embodiment, the power storage means 42 is a capacitor having a predetermined capacity, and an aluminum electrode electrolytic capacitor or an electric double layer type capacitor can be used. As the power storage means 42, a storage battery such as a lead storage battery, a Ni-cd storage battery, or a Li storage battery can be used in addition to a capacitor.

In the inverter device 40, the DC terminals of the switching arms 41 and 43 are connected to each other, the AC terminals are connected to the generator 31 and the motor 32, respectively, and the capacitor 42 is connected to the switching arms. 41, 43 are connected to the DC side terminals.

The control means 46 is constituted by a microcomputer device, and includes a sensor 48 for detecting the drive current of the electric motor 32 and a sensor 47 for detecting the state of the power storage means 42.
And a sensor 49 for detecting the state of the accelerator pedal, and a sensor 50 for detecting the state of the brake pedal, the microprocessor of the microcomputer device according to a program stored in advance, and the sensors 47, 48, 49,
A gate signal is output to the generator-side switching arm 41 and the motor-side switching arm 43 based on the detection value of 50. In this example, an engine controller 51 that controls the amount of fuel supplied to the engine 30 is connected to the control unit 46.

In this embodiment, the control means 46 controls both switching arms 41, 42 in accordance with the detection values of the respective sensors.
For example, a gate signal to 43 is output as shown in Table 1.

[0036]

[Table 1]

Then, the control means in this embodiment operates as shown in FIG. First, when the vehicle is running with the accelerator pedal depressed by a predetermined amount, the control means 4
A sensor 49 detects the state of the accelerator pedal by a sensor 49, turns off the gate signal to the generator-side switching arm 41 and operates as a rectifier, and outputs a gate signal of a predetermined waveform to the motor-side switching arm 43. (S1, S2, S3).

Thus, the inverter device 40 supplies the electric power from the generator 31 to the electric motor 32 and charges the surplus electric power to the power storage means 42 or the electric power of the electric generator 31 depending on the running state of the automobile. The electric power is supplied to the electric motor 32 together with the electric power charged by the electric storage means 42.

Further, when the vehicle is in a braking state, that is, in a state where the accelerator pedal is not depressed (in this state, the brake pedal may be depressed or not depressed), when the capacitor 42 is in a state capable of storing electricity, The control means 46 detects the states of the accelerator pedal and the condenser 42 with the sensors 47 and 49, and turns off the gate signal to the generator-side switching arm 41.
The state is made to operate as a rectifier, and the gate signal to the motor-side switching arm 43 is turned off to operate as a rectifier (S1, S4, S5, S6).
At the same time, the control means 46 continues to supply fuel to the engine 30 by the engine controller 51.

Thus, the inverter device 40 charges the electric storage means 42 with the electric power generated by the electric motor 32 due to the rotation of the wheels 33. Therefore, in this state, the electric motor 3
2 generates a regenerative braking force by generating power, and the generated regenerative current is stored in the capacitor 42.

At this time, the gate signal to the generator-side switching arm 41 is in the OFF state, the generator-side switching arm 41 operates as a rectifier, and the voltage applied to the generator-side switching arm 41 is inverted. This is a voltage, and power from the motor-side switching arm 43 does not flow to the generator 31, and power from the generator 31 is charged from the generator-side switching arm 41 to the capacitor 42 in the same manner as during traveling. You.

When the vehicle is in the braking state and the power storage means 42 cannot store power, the control means 46 detects the state of the capacitor 42 and the accelerator pedal with sensors 47 and 49, and switches the generator side. The gate signal to the arm unit 41 is controlled and the gate signal sent to the motor-side switching arm unit 43 is turned off (S1, S4, S7, S8). At the same time, the control means 46
Cuts off the supply of fuel to the engine 30 by the engine controller 51.

In this state, the electric motor 32 operates as a generator to generate AC power.
The AC power from the motor is rectified by the motor-side switching arm 43 operating as a rectifier, and is output to the generator 31 as AC by the generator-side switching arm 41.

Then, AC power having a predetermined waveform is input to the generator 31, the generator 31 operates as a motor, and the generator 31 rotates the output shaft of the engine 30 against internal friction of the internal combustion engine, and Energy is released as heat energy generated inside the internal combustion engine.

Therefore, according to the driving apparatus for a series-type hybrid vehicle according to the present embodiment, it is possible to generate a regenerative braking force on the electric motor 32 and also to avoid supplying excessive electric power to the power storage means.

[Second Embodiment] FIG. 3 shows a configuration of a drive device of a series hybrid vehicle according to the present embodiment.

As shown in FIG. 2, the drive system of the series hybrid vehicle according to this embodiment has the same internal combustion engine 30 and generator as those of the drive system of the series hybrid vehicle shown in the first embodiment. 31, the generator 31,
An electric motor 32 is provided. In this example, the generator 31
Device 60 for controlling the power from the motor and outputting the same to motor 32, and control means 6 for controlling the inverter device.
6 is provided.

The inverter device 60 is connected to the generator 3
1; a power storage means 62 charged with electric power from the power generator 31; a resistor 63 mounted in parallel with the power storage means 62; and any one of the power storage means 62 and the resistor. Switching means 64 for selecting and switching
And a motor-side switching arm 65 connected to the motor 32. In this example, the switching arm unit 65 and the power storage unit 62 have the same configuration as that described in the first embodiment.

In the inverter device 60, the rectifier 61 and the switching arm 65 are connected to each other on the DC side terminals, and the other side terminals are connected to the generator 31 and the motor 32, respectively. Further, the capacitor 62 and the resistor 62 are connected to other terminals of the rectifier 61 and the switching arm 65 via switching means 64.

The control means 66 is constituted by a microcomputer device and comprises a sensor 67 for detecting the state of the power storage means 62 and a sensor 69 for detecting the state of the accelerator pedal.
And a sensor 70 for detecting the state of the brake pedal are connected.
Based on the detected values of 8, 69, 70, the switching means 64
And outputs a gate signal to the switching arm 65. In this example, an engine controller 71 that controls the amount of fuel supplied to the engine 30 is connected to the control unit 66.

In this embodiment, the control means 66 comprises a sensor 68 for detecting the drive current of the electric motor 32, a switching signal to the switching means 64 and a gate signal to the switching arm 65 in accordance with the detection value of each sensor. Is output, for example, as shown in Table 2.

[0052]

[Table 2]

Then, the control means in this embodiment operates as shown in FIG. First, when the vehicle is running with the accelerator pedal depressed by a predetermined amount, the control means 6
6 is a sensor 69 that detects the state of the accelerator pedal and sets the switching signal of the switching means 64 to the capacitor side.
A gate signal having a predetermined waveform is output to the switching arm unit 65 (ST1, ST2, ST3).

Thus, the inverter device 60 supplies the electric power from the generator 31 to the electric motor 32 and charges the surplus electric power to the electric storage means 62 or the electric power of the electric generator 31 depending on the running state of the automobile. The electric power charged by the electric storage means 62 is supplied to the electric motor 32 together with the electric power.

When the vehicle is in a braking state, that is, in a state in which the accelerator pedal is not depressed (in this state, the brake pedal may be depressed or not depressed), when the capacitor 62 is in a state capable of storing electricity, The control means 66 detects the states of the accelerator pedal and the capacitor 62 with the sensors 67 and 69, sets the selection signal to the switching means 64 to the capacitor side, sets the gate signal to the switching arm section 65 to the OFF state, and sets the rectifier. (ST1, ST4, ST5, ST5)
ST6). At the same time, the control means 66 continues to supply fuel to the engine 30 by the engine controller 71.

Thus, the inverter device 60 charges the electric storage means 62 with the electric power generated by the electric motor 32 due to the rotation of the wheels 33. Therefore, in this state, the electric motor 3
2 generates a regenerative braking force by generating power, and the generated regenerative current is stored in the capacitor 62.

At this time, the gate signal to the rectifier 61 is O
In the FF state, the rectifier 61 operates as a rectifier,
The voltage applied to the rectifier 61 is a reverse voltage, and the power from the switching arm 65 does not flow to the generator 31, and the power from the generator 31 is charged from the rectifier 61 to the capacitor 62 in the same manner as during traveling. You.

When the vehicle is in the braking state and the power storage means 62 cannot store power, the control means 66 uses sensors 67 and 69 to control the accelerator pedal and the capacitor 62.
Is detected, the switching signal of the switching means 64 is set to the resistor 63 side, and the gate signal sent to the switching arm 65 is set to the OFF state (ST1, ST3, ST3).
ST7, ST8). At the same time, the control means 66 cuts off the supply of fuel to the engine 30 by the engine controller 71.

In this state, the motor 32 operates as a generator to generate AC power, and the inverter device 60 rectifies the AC power from the motor by the switching arm 65 operating as a rectifier. The electric energy is applied to the resistor 63 via the resistor 63 and the electric energy is emitted as heat energy. As a result, the electric motor 32 can generate regenerative braking force and does not supply excessive power to the power storage means.

Therefore, according to the driving apparatus for a series hybrid vehicle according to the present embodiment, not only can the regenerative braking force be generated in the electric motor, but also excessive power is not supplied to the power storage means.

[0061]

As described above, according to the present invention,
The output of the internal combustion engine is converted into electric power by a generator, and the electric power is used to drive a motor to drive a vehicle. In a series-type hybrid electric vehicle drive device, the generator is driven by a regenerative current generated by the motor during braking. Since the internal combustion engine is rotated and the regenerative current is absorbed by the internal frictional resistance of the internal combustion engine, the regenerative current generated when the vehicle is braked is reliably absorbed while preventing overcharging of the power storage means. And the regenerative braking can be performed irrespective of the state of the power storage means, the load on the foot brake is reduced, and the effect that the capacity of the foot brake does not need to be unnecessarily increased is exerted.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a drive device of a series hybrid vehicle according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the drive device of the series hybrid vehicle shown in FIG.

FIG. 3 is a block diagram showing a configuration of a drive device of a series hybrid vehicle according to a second embodiment of the present invention.

FIG. 4 is a flowchart showing an operation of the driving device of the series hybrid vehicle shown in FIG. 3;

FIG. 5 is a block diagram showing a configuration of a drive device of a conventional series hybrid vehicle.

[Explanation of symbols]

 REFERENCE SIGNS LIST 30 internal combustion engine (engine) 31 generator 32 motor 33 wheels 40 inverter device 41 generator-side switching arm unit 42 power storage means (capacitor) 43 motor-side switching arm unit 46 control means 60 inverter device 61 rectifier 62 power storage means (capacitor) 63 Resistor 64 Switching means 65 Switching arm 66 Control means

Claims (2)

[Claims] An internal combustion engine; a generator driven by the internal combustion engine; a motor driven by electric power from the generator to drive wheels; and controlling the electric power from the generator to output the electric power to the electric motor. An inverter device, comprising: a control unit that controls the inverter device; the inverter device includes a generator-side switching arm unit connected to the generator, and a power storage unit that is charged with power from the generator. A motor-side switching arm connected to the motor, wherein the control unit detects a state of the power storage unit and a state of an accelerator pedal, and sends the state to the generator-side switching arm and the motor-side switching arm. When the vehicle is in a running state, the gate signal to the switching arm on the generator side is turned off and the rectifier is turned on. And outputs a gate signal to the motor-side switching arm to drive and control the motor. When the vehicle is in a braking state and the power storage means is in a state where power can be stored, the generator-side switching arm is The gate signal to the motor is switched off to operate as a rectifier, and the gate signal to the motor-side switching arm is turned off to operate as a rectifier to charge the electric power generated by the motor by the rotation of the wheels to the power storage means. When the battery is in a braking state and the power storage means cannot store power, a gate signal to the generator-side switching arm is controlled, and a gate signal to be sent to the motor-side switching arm is set to an OFF state, so that the generator is driven by the motor. Of a series-type hybrid vehicle that drives as a Operated device. 2. An internal combustion engine, a generator driven by the internal combustion engine, a motor driven by electric power from the generator, and an inverter device controlling electric power from the generator to output the electric power to the electric motor. A control unit for controlling the inverter device, wherein the inverter device is connected in parallel with the rectifier connected to the generator, a power storage unit charged with power from the generator, and the power storage unit. A switching unit for switching between the resistor, the power storage unit, and the resistor; and a switching arm connected to the motor, wherein the control unit detects a state of the power storage unit and a state of an accelerator pedal. And controlling the gate signal to the switching arm and switching the switching means. When the vehicle is in a running state, the switching means is set to the power storage means side. A switching signal is output, and a gate signal is output to the switching arm to drive and control the motor. When the vehicle is in a braking state and the power storage means is in a state where power can be stored, the switching means is charged. While outputting a switching signal for the means side, the gate signal to the switching arm unit is turned off to operate as a rectifier, and the electric power generated by the motor by the rotation of the wheels is charged to the power storage means, and the vehicle is brought into a braking state, And, when the power storage means is unable to store power, a switching signal for setting the switching means to the resistor side is output, and a gate signal to be sent to a switching arm is set to an OFF state to reduce the power generated by the motor due to rotation of the wheels. A drive device for a series hybrid vehicle that consumes resistors.