WO2016188067A1 - Auxiliary converter apparatus for railway vehicle and railway vehicle - Google Patents

Abstract

Provided are an auxiliary converter apparatus for a railway vehicle and a railway vehicle. The auxiliary converter apparatus for the railway vehicle comprises: a first auxiliary converter (101), comprising a first power unit module (102), a first functional circuit (103) and a first switch (104), wherein an output terminal of the first power unit module (102) is connected to an input terminal of the first functional circuit (103), and the first switch (104) is arranged between the first power unit module (102) and the first functional circuit (103); a second auxiliary converter (105), comprising a second power unit module (106), a second functional circuit (107) and a second switch (108), wherein an output terminal of the second power unit module (106) is connected to an input terminal of the second functional circuit (107), and the second switch (108) is arranged between the second power unit module (106) and the second functional circuit (107); and a connecting circuit (109), provided with a third switch (110), wherein a first terminal of the connecting circuit (109) is connected between the first switch (104) and the first functional circuit (103), and a second terminal of the connecting circuit (109) is connected between the second switch (108) and the second functional circuit (107). Thus, the volume, weight and cost of the auxiliary converter apparatus can be reduced.

Description

Auxiliary converter device for rail vehicles and rail vehicles Technical field

The present invention relates to rail vehicle equipment technology, and more particularly to an auxiliary converter device for rail vehicles and a rail vehicle.

Background technique

Rail vehicle-mounted auxiliary converters are important components for providing stable three-phase AC power and single-phase AC power to rail vehicles.

In order to ensure the stability and reliability of the power supply of the rail vehicle, in general, at least two auxiliary converters need to be installed on the rail vehicle. When one auxiliary converter fails, the other auxiliary converter can be the orbit. All the vehicles are powered by electrical equipment to ensure the basic power supply requirements of the rail vehicles. Referring to FIG. 1 , a conventional rail vehicle-mounted auxiliary current converter includes a first auxiliary converter 101 and a second auxiliary converter 105. The output of the first auxiliary converter 101 is provided with a first switch 104. The output of the second auxiliary converter 105 is provided with a second switch 108. The input end of the first auxiliary converter 101 is connected to the power source, and the output end of the first auxiliary converter 101 is connected to the first powered device, and the second auxiliary variable is connected. The input end of the flow device 105 is connected to the power source, the output end of the second auxiliary current transformer 105 is connected to the second electrical device, and the on-board auxiliary current converter device of the rail vehicle further includes a connection circuit 109, and the first end of the connection circuit 109 is connected at the first end. Between the output of the auxiliary converter 101 and the first powered device, the second end of the connecting circuit 109 is connected between the output of the second auxiliary converter 105 and the second powered device, and the first of the connecting circuit 109 A third switch 110 is disposed between one end and the second end. When both the first auxiliary converter 101 and the second auxiliary converter 105 are working normally, the first switch 104 and the second switch 108 are turned on, the third switch 110 is turned off, the connection circuit 109 is in an open state, and the first auxiliary converter is turned on. The first auxiliary switch 105 supplies power to the second powered device, and the second auxiliary converter 105 supplies power to the second powered device. When the first auxiliary converter 101 fails, the first switch 104 is turned off, and the second switch 108 and the first switch The three switches 110 are turned on, the connection circuit 109 is turned on, so that the first auxiliary converter 101 no longer outputs current, and the current output by the second auxiliary converter 105 can flow into the first power device through the connection circuit 109. The second auxiliary converter 105 is both the first power device and the second power device The device is powered. When the second auxiliary converter 105 is in a fault shutdown, the second switch 108 is turned off, the first switch 104 and the third switch 110 are turned on, and the connection circuit 109 is turned on. At this time, the first auxiliary converter 101 is simultaneously A powered device and a second powered device are used to supply power.

In order to ensure that the first auxiliary current transformer 101 or the second auxiliary current transformer 105 can simultaneously supply power to the first powered device and the second powered device, when the power of the first powered device and the second powered device are both R The capacity of the first auxiliary converter 101 and the second auxiliary converter 105 are both not less than 2R, that is, the first auxiliary converter 101 and the second auxiliary converter 105 need to be redundantly designed. The redundant design method results in a multiplication of the design capacity of each auxiliary converter. When the auxiliary converter capacity increases, the capacity of each component in the auxiliary converter increases, thereby causing the volume of the auxiliary converter, The weight and cost are multiplied, so that the auxiliary converter takes up a lot of installation space.

Summary of the invention

The invention provides an auxiliary converter device for rail vehicles and a rail vehicle to reduce the volume, weight and cost of the auxiliary converter device.

An aspect of the present invention provides an auxiliary current conversion device for a rail vehicle, including:

a first auxiliary converter, comprising: a first power unit module, a first function circuit and a first switch, wherein an input end of the first power unit module is connected to a first power source, and an output end of the first power unit module is An input end of the first functional circuit is connected, an output end of the first functional circuit is configured to be connected to the first powered device, and the first switch is disposed in the first power unit module and the first functional circuit between;

a second auxiliary converter includes a second power unit module, a second function circuit, and a second switch, wherein an input end of the second power unit module is connected to a second power source, and an output end of the second power unit module is An input end of the second function circuit is connected, an output end of the second function circuit is used for connecting with a second power device, and the second switch is disposed at the second power unit module and the second function circuit between;

a connecting circuit, a third switch is disposed between the first end and the second end of the connecting circuit, for connecting or disconnecting the connecting circuit, and the first end of the connecting circuit is connected to the first switch And a first functional circuit, the second end of the connecting circuit is connected between the second switch and the second functional circuit.

Another aspect of the present invention provides a rail vehicle including the auxiliary converter device for a rail vehicle provided by the present invention.

Based on the above, the auxiliary converter device for a rail vehicle and the rail vehicle provided by the present invention, when both the first auxiliary converter and the second auxiliary converter are working normally, the first switch and the second switch are turned on, and the third switch is turned off. The connecting circuit is in an open state, the first auxiliary converter supplies power to the first powered device, and the second auxiliary converter supplies power to the second powered device; when the first auxiliary unit of the first auxiliary converter fails When the first switch is turned off, the second switch and the third switch are turned on, the connection circuit is turned on, and since the first end of the connection circuit is connected between the first switch and the first functional circuit, the second end of the connection circuit is connected Between the second switch and the second functional circuit, therefore, a part of the current can flow into the first powered device through the second power unit module, the connecting circuit and the first functional circuit, and another part of the current can pass through the second power unit module, the second The functional circuit flows into the second powered device, and the second auxiliary converter simultaneously supplies power to the first powered device and the second powered device. Similarly, when the second power unit module of the second auxiliary converter fails, the second switch is turned off, the first switch and the third switch are turned on, and the connection circuit is turned on, and the first auxiliary converter is simultaneously the first Powered by the electrical equipment and the second electrical equipment. Therefore, when the first power unit module or the second power unit module fails, only the first power unit module or the second power unit module of the auxiliary current conversion device needs to have a larger capacity, that is, only the first power unit module The second power unit module needs to be redundantly designed, and the first functional circuit and the second functional circuit do not need to be redundantly designed. Therefore, the capacity of the first functional circuit and the second functional circuit need not be increased, thereby facilitating auxiliary changes. The volume, weight, and cost of the flow device are reduced. At the same time, since the failure rate of the power unit module in the auxiliary converter is high, and the failure rate of the function circuit is low, the auxiliary converter device for the rail vehicle provided by the present invention can be provided by redundant design of the power unit module. Has good reliability.

DRAWINGS

1 is a schematic structural view of an auxiliary flow converter for a rail vehicle;

2 is a schematic structural view of an auxiliary converter device for a rail vehicle according to the present invention;

FIG. 3 is a schematic structural diagram of another auxiliary current conversion device for a rail vehicle according to the present invention.

Reference mark:

101: a first auxiliary converter; 102: a first power unit module;

103: a first function circuit; 104: a first switch;

105: a second auxiliary converter; 106: a second power unit module;

107: a second function circuit; 108: a second switch;

109: connecting circuit; 110: third switch;

111: a first filter circuit; 112: a first isolation transformer;

113: a second filter circuit; 114: a second isolation transformer;

115: a first reactor; 116: a first capacitor;

117: second reactor; 118: second capacitor;

201: first power source; 202: second power source.

detailed description

Embodiment 1 Referring to FIG. 1 and FIG. 2, an auxiliary current conversion device for a rail vehicle includes: a first auxiliary current transformer 101 including a first power unit module 102, a first function circuit 103, and a first switch 104. The input end of the first power unit module 102 is connected to the first power source 201, and the output end of the first power unit module 102 is connected to the input end of the first function circuit 103. The first function circuit 103 The output is for connection with a first powered device, the first switch 104 is disposed between the first power unit module 102 and the first functional circuit 103; and the second auxiliary converter 105 includes a second power The unit module 106, the second function circuit 107 and the second switch 108, the input end of the second power unit module 106 is connected to the second power source 202, and the output end of the second power unit module 106 and the second function An input end of the circuit 107 is connected, an output end of the second function circuit 107 is for connecting with a second power-consuming device, and the second switch 108 is disposed at the second power unit module 106 and the second function circuit 107. Connection circuit 109 A third switch 110 is disposed between the first end and the second end of the connecting circuit 109 for turning on or off the connecting circuit 109, and the first end of the connecting circuit 109 is connected to the first switch 104. Between the first functional circuit 103 and the first functional circuit 103, the second end of the connection circuit 109 is connected between the second switch 108 and the second functional circuit 107.

In this embodiment, when the first auxiliary converter 101 and the second auxiliary converter 105 are both normal In operation, the first switch 104 and the second switch 108 are turned on, the third switch 110 is turned off, the connection circuit 109 is in an open state, the first auxiliary converter 101 supplies power to the first powered device, and the second auxiliary converter 105 is The second power unit 102 is powered; when the first power unit module 102 of the first auxiliary converter 101 fails, the first switch 104 is turned off, the second switch 108 and the third switch 110 are turned on, and the connection circuit 109 is turned on. Since the first end of the connection circuit 109 is connected between the first switch 104 and the first function circuit 103, the second end of the connection circuit 109 is connected between the second switch 108 and the second function circuit 107, so that a part of the current can The second power unit module 106, the connection circuit 109, and the first function circuit 103 flow into the first power device, and another portion of the current can flow into the second power device through the second power unit module 106 and the second function circuit 107. The second auxiliary converter 105 simultaneously supplies power to the first powered device and the second powered device. Similarly, when the second power unit module 106 of the second auxiliary converter 105 fails, the second switch 108 is turned off, the first switch 104 and the third switch 110 are turned on, and the connection circuit 109 is turned on, at this time, the first auxiliary change The streamer 101 simultaneously supplies power to the first powered device and the second powered device. Therefore, when the first power unit module 102 or the second power unit module 106 fails, only the first power unit module 102 or the second power unit module 106 of the auxiliary current conversion device needs to have a larger capacity, that is, only the first A power unit module 102 and a second power unit module 106 need to be redundantly designed, and the first function circuit 103 and the second function circuit 107 do not need to be redundantly designed. Therefore, the first function circuit 103 and the second function circuit 107 There is no need to increase the capacity, which in turn helps to reduce the volume, weight and cost of the auxiliary converter. At the same time, since the failure rate of the power unit module in the auxiliary converter is high, and the failure rate of the functional circuit is low, the auxiliary converter of the rail vehicle in this embodiment can be made as long as the power unit module is redundantly designed. The device has good reliability.

For the second embodiment, referring to FIG. 2, on the basis of the first embodiment, the first function circuit 103 includes a first filter circuit 111 and a first isolation transformer 112, and the input end of the first filter circuit 111 and the first An output end of the power unit module 102 is connected, an output end of the first filter circuit 111 is connected to an input end of the first isolation transformer 112, and an output end of the first isolation transformer 112 is used for the first use The second functional circuit 107 includes a second filter circuit 113 and a second isolation transformer 114, and an input end of the second filter circuit 113 is connected to an output end of the second power unit module 106, Second An output end of the filter circuit 113 is connected to an input end of the second isolation transformer 114, and an output end of the second isolation transformer 114 is connected to the second electrical device. Thereby, the first functional circuit 103 and the second functional circuit 107 are enabled to implement filtering and isolation functions. At the same time, since the failure rate of the filter circuit and the isolation transformer is low, even if the filter circuit and the isolation transformer are not redundantly designed, the auxiliary converter device in this embodiment can have better reliability.

In this embodiment, preferably, the first filter circuit 111 includes a first reactor 115 and a first capacitor 116, and the first reactor 115 and the first capacitor 116 are connected in parallel at the input end of the first filter circuit 111 and Between the outputs; the second filter circuit 113 includes a second reactor 117 and a second capacitor 118, and the second reactor 117 and the second capacitor 118 are connected in parallel at the input and output of the second filter circuit 113. Between the ends. Thereby, the first filter circuit 111 and the second filter circuit 113 can have better filtering effects. At the same time, since the failure rate of the reactor and the capacitor is low, even if the reactor and the capacitor are not redundantly designed, the auxiliary converter device in the embodiment can be made to have better reliability.

For the third embodiment, referring to FIG. 3, on the basis of the first embodiment, the first auxiliary converter 101 further includes a first filter circuit 111, and the first function circuit 103 is a first isolation transformer 112, the first An input end of the filter circuit 111 is connected to an output end of the first power unit module 102, and an output end of the first filter circuit 111 is connected to an input end of the first isolation transformer 112, the first isolation transformer 112 The output terminal is configured to be connected to the first powered device, the first switch 104 is disposed between the first filter circuit 111 and the first isolation transformer 112; the second auxiliary converter 105 further includes a second filter circuit 113, the second function circuit 107 is a second isolation transformer 114, an input end of the second filter circuit 113 is connected to an output end of the second power unit module 106, and the second filter circuit is An output end of the second isolation transformer 114 is connected to an input end of the second isolation transformer 114, and an output end of the second isolation transformer 114 is connected to the second electrical device, and the second switch 108 is disposed in the Two filter circuits 113 and second The first end of the connection circuit 109 is connected between the first switch 104 and the first isolation transformer 112, and the second end of the connection circuit 109 is connected to the second switch 108 and Between the second isolation transformers 114. Since the first functional circuit 103 is the first isolation transformer 112 and the second functional circuit 107 is the second isolation transformer 114, the first auxiliary converter 101 and the first The second auxiliary converter 105 has an isolation function, and at the same time, since the first auxiliary converter 101 includes the first filter circuit 111, the second auxiliary converter 105 includes the second filter circuit 113, thereby causing the first auxiliary converter 101 And the second auxiliary converter 105 has a filtering function.

In this embodiment, when both the first auxiliary converter 101 and the second auxiliary converter 105 are working normally, the first switch 104 and the second switch 108 are turned on, the third switch 110 is turned off, and the connection circuit 109 is in an open state. The first auxiliary converter 101 supplies power to the first powered device, and the second auxiliary converter 105 supplies power to the second powered device; when the first power unit module 102 of the first auxiliary converter 101 fails, the first A switch 104 is turned off, the second switch 108 and the third switch 110 are turned on, the connection circuit 109 is turned on, and the first end of the connection circuit 109 is connected between the first switch 104 and the first isolation transformer 112, and the connection circuit 109 is connected. The second end is connected between the second switch 108 and the second isolation transformer 114. Therefore, a part of the current can flow into the first through the second power unit module 106, the second filter circuit 113, the connection circuit 109, and the first isolation transformer 112. The electrical device, another portion of the current can flow into the second electrical device through the second power unit module 106, the second filter circuit 113, and the second isolation transformer 114. At this time, the second auxiliary converter 105 is also the first power device. And a second power supply unit. Similarly, when the second power unit module 106 of the second auxiliary converter 105 fails, the second switch 108 is turned off, the first switch 104 and the third switch 110 are turned on, and the connection circuit 109 is turned on, at this time, the first auxiliary change The streamer 101 simultaneously supplies power to the first powered device and the second powered device. Thus, when the first power unit module 102 or the second power unit module 106 fails, only the first power unit module 102 and the first filter circuit 111 or the second power unit module 106 and the second filter are included in the auxiliary converter device. The circuit 113 needs to have a larger capacity, that is, only the first power unit module 102, the first filter circuit 111, the second power unit module 106, and the second filter circuit 113 need to be redundantly designed, and the first isolation transformer 112 and the first The two isolation transformers 114 do not need to be redundantly designed. Therefore, the capacities of the first isolation transformer 112 and the second isolation transformer 114 need not be increased, thereby facilitating the reduction of the volume, weight, and cost of the auxiliary converter device. At the same time, since the isolation transformer has a low failure rate, even if the isolation transformer is not designed redundantly, the auxiliary converter device in this embodiment can have better reliability.

In this embodiment, preferably, the first filter circuit 111 includes a first reactor 115 and a first capacitor 116, and the first reactor 115 and the first capacitor 116 are connected in parallel Between the input end and the output end of the first filter circuit 111; the second filter circuit 113 includes a second reactor 117 and a second capacitor 118, and the second reactor 117 and the second capacitor 118 are connected in parallel Between the input end and the output end of the second filter circuit 113. Thereby, the first filter circuit 111 and the second filter circuit 113 can have better filtering effects.

An embodiment of the present invention provides a rail vehicle, including the auxiliary converter device for a rail vehicle according to any embodiment of the present invention.

In this embodiment, when both the first auxiliary converter 101 and the second auxiliary converter 105 are working normally, the first switch 104 and the second switch 108 are turned on, the third switch 110 is turned off, and the connection circuit 109 is in an open state. The first auxiliary converter 101 supplies power to the first powered device, and the second auxiliary converter 105 supplies power to the second powered device; when the first power unit module 102 of the first auxiliary converter 101 fails, the first A switch 104 is turned off, the second switch 108 and the third switch 110 are turned on, the connection circuit 109 is turned on, and since the first end of the connection circuit 109 is connected between the first switch 104 and the first functional circuit 103, the connection circuit 109 is The second end is connected between the second switch 108 and the second function circuit 107. Therefore, a part of the current can flow into the first power device through the second power unit module 106, the connection circuit 109 and the first function circuit 103, and the other part of the current The second power unit module 106 and the second power circuit 107 can flow into the second power device, and the second auxiliary converter 105 simultaneously supplies power to the first power device and the second power device. Similarly, when the second power unit module 106 of the second auxiliary converter 105 fails, the second switch 108 is turned off, the first switch 104 and the third switch 110 are turned on, and the connection circuit 109 is turned on, at this time, the first auxiliary change The streamer 101 simultaneously supplies power to the first powered device and the second powered device. Therefore, when the first power unit module 102 or the second power unit module 106 fails, only the first power unit module 102 or the second power unit module 106 of the auxiliary current conversion device needs to have a larger capacity, that is, only the first A power unit module 102 and a second power unit module 106 need to be redundantly designed, and the first function circuit 103 and the second function circuit 107 do not need to be redundantly designed. Therefore, the first function circuit 103 and the second function circuit 107 There is no need to increase the capacity, which in turn helps to reduce the volume, weight and cost of the auxiliary converter. At the same time, since the failure rate of the power unit module in the auxiliary converter is high, and the failure rate of the functional circuit is low, the auxiliary converter of the rail vehicle in this embodiment can be made as long as the power unit module is redundantly designed. The device has good reliability.

In this embodiment, the rail vehicle may include a plurality of auxiliary converter devices for rail vehicles according to any of the embodiments of the present invention.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims (6)

An auxiliary converter device for a rail vehicle, comprising: a first auxiliary converter, comprising: a first power unit module, a first function circuit and a first switch, wherein an input end of the first power unit module is connected to a first power source, and an output end of the first power unit module is An input end of the first functional circuit is connected, an output end of the first functional circuit is configured to be connected to the first powered device, and the first switch is disposed in the first power unit module and the first functional circuit between; a second auxiliary converter includes a second power unit module, a second function circuit, and a second switch, wherein an input end of the second power unit module is connected to a second power source, and an output end of the second power unit module is An input end of the second function circuit is connected, an output end of the second function circuit is used for connecting with a second power device, and the second switch is disposed at the second power unit module and the second function circuit between; a connecting circuit, a third switch is disposed between the first end and the second end of the connecting circuit, for connecting or disconnecting the connecting circuit, and the first end of the connecting circuit is connected to the first switch And a first functional circuit, the second end of the connecting circuit is connected between the second switch and the second functional circuit. The auxiliary converter device for a rail vehicle according to claim 1, wherein: The first function circuit includes a first filter circuit and a first isolation transformer, and an input end of the first filter circuit is connected to an output end of the first power unit module, and an output end of the first filter circuit is An input end of the first isolation transformer is connected, and an output end of the first isolation transformer is used for connecting with the first electrical equipment; The second function circuit includes a second filter circuit and a second isolation transformer, an input end of the second filter circuit is connected to an output end of the second power unit module, and an output end of the second filter circuit is The input end of the second isolation transformer is connected, and the output end of the second isolation transformer is used for connection with the second electrical equipment. The auxiliary converter device for a rail vehicle according to claim 2, wherein: The first filter circuit includes a first reactor and a first capacitor, and the first reactor and the first capacitor are connected in parallel between an input end and an output end of the first filter circuit; The second filter circuit includes a second reactor and a second capacitor, and the second reactor and the second capacitor are connected in parallel between the input end and the output end of the second filter circuit. The auxiliary converter device for a rail vehicle according to claim 1, wherein: The first auxiliary converter further includes a first filter circuit, the first function circuit is a first isolation transformer, and an input end of the first filter circuit is connected to an output end of the first power unit module. An output end of the first filter circuit is connected to an input end of the first isolation transformer, an output end of the first isolation transformer is used to be connected to the first powered device, and the first switch is disposed in the Between the first filter circuit and the first isolation transformer; The second auxiliary converter further includes a second filter circuit, the second function circuit is a second isolation transformer, and an input end of the second filter circuit is connected to an output end of the second power unit module. An output end of the second filter circuit is connected to an input end of the second isolation transformer, an output end of the second isolation transformer is used to be connected to the second electrical device, and the second switch is disposed in the Between the second filter circuit and the second isolation transformer; The first end of the connection circuit is connected between the first switch and the first isolation transformer, and the second end of the connection circuit is connected between the second switch and the second isolation transformer. The auxiliary converter device for a rail vehicle according to claim 4, wherein: The first filter circuit includes a first reactor and a first capacitor, and the first reactor and the first capacitor are connected in parallel between an input end and an output end of the first filter circuit; The second filter circuit includes a second reactor and a second capacitor, and the second reactor and the second capacitor are connected in parallel between the input end and the output end of the second filter circuit. A rail vehicle characterized by comprising the auxiliary converter device for a rail vehicle according to any one of claims 1-5.

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