KR20090091938A - Parallel operating apparatus of train's assist power converter - Google Patents

Abstract

A parallel operating apparatus of an auxiliary power converter for trains is provided to normally supply an auxiliary power regardless of malfunction of a specific auxiliary power converter by arranging four converter groups in two auxiliary power converters. A current value transceiving part(40) transmits/receives a DC output value to/from a computer of a control room. A correcting part(42) outputs a correcting voltage corresponding to the DC output value. An adder adds a DC voltage of a common output terminal of four converter groups to the correcting voltage outputted from the correcting part. A first subtracter subtracts a feedback DC voltage from the output voltage of the adder. A voltage control part(50) outputs a voltage for correcting the DC output. A multiplier multiplies the output voltage of the voltage control part by sintheta of a phase detecting part, and outputs a response current. A second subtracter subtracts a first feedback current from the response current of the multiplier. A first current control part(56) outputs a current for correcting the DC output. A first PWM(Pulse Width Modulation) signal generating part(58) generates a PWM signal corresponding to the output current of the first current control part.

Description

PARALLEL OPERATING APPARATUS OF TRAIN'S ASSIST POWER CONVERTER}

The present invention relates to a parallel operation device of the auxiliary power converter for trains, in particular, one auxiliary power converter is mounted on the power vehicle of the vehicle configuration constituting the high-speed train, two auxiliary power converters in one train And a device for driving a total of four converter groups in parallel in the one set when two converter groups are operated in each auxiliary power converter of the single set.

In the operation of the auxiliary power converter used in a vehicle constituting the conventional high speed train, when the auxiliary power converter which has supplied power to the load in the vehicle stops starting, a crew member or the like starts using the extension feed connector. The other auxiliary power converter being used to power the load of the vehicle with its power off.

However, in such a conventional technique, when an auxiliary power converter supplying power to a load stops starting, while another auxiliary power converter operating by using an extension feed connector takes action to supply power to the load. The load has the drawback of not driving.

For example, passengers in the vehicle may not watch the TV while the TV in the vehicle driven by the auxiliary power fails to drive.

When the quality of service decreases like this, it is difficult to attract passengers.

The present invention has been made in order to solve the above-mentioned problems, one auxiliary power converter is mounted on the power vehicle of the vehicle configuration constituting the high-speed train, two auxiliary power converters are mounted on one train, The purpose of the present invention is to provide a parallel operation device of a train auxiliary power converter which drives a total of four converter groups in parallel in the single train when two converter groups are operated in each auxiliary power converter. have.

In order to achieve this purpose,

According to one embodiment of the present invention, an apparatus is provided with two auxiliary power converters in a vehicle configuration of a train, two converter groups are respectively driven in each of the auxiliary power converters, and the four converter groups are operated in parallel. The converter group may include: a current value transmitting / receiving unit which collects its own DC output value and provides the same to the cab computer, and receives each DC output value corresponding to each of the converter groups from the cab computer; A compensator configured to receive respective DC output values corresponding to the four converter groups from the current value transmitter / receiver and output a compensation voltage corresponding to its DC output; An adder for adding and outputting a DC voltage of a common output terminal of the four converter groups and a compensation voltage output from the compensation unit; A first subtractor for subtracting and outputting a feedback DC voltage from an output voltage of the adder; A voltage controller for controlling a voltage according to an output voltage of the first subtractor to output a voltage for DC output compensation; A phase detector for detecting a phase of an alternating current provided by the vehicle and outputting sinθ corresponding to the phase; A multiplier for outputting a response current by multiplying the output voltage of the voltage controller by sinθ of the phase detector; A second subtractor which subtracts and outputs a first feedback current from a response current of the multiplier; A first current controller configured to control an output current of the second subtractor to output a current for DC output compensation; A first PWM signal generator configured to generate a pulse width modulation (PWM) signal corresponding to the output current of the first current controller; Converts the alternating current provided from the vehicle into a direct current by using the PWM signal of the first PWM signal generator and provides a first feedback current to the second subtractor, and sends a feedback direct current voltage to the first subtractor Providing a first AC / DC converter; A third subtractor which subtracts and outputs a second feedback current from the response current of the multiplier; A second current controller configured to control an output current of the third subtractor to output a current for DC output compensation; A second PWM signal generator for generating a PWM signal corresponding to the output current of the second current controller; And a second alternating current / direct current converting unit converting an alternating current provided by the own vehicle into a direct current by using the PWM signal of the second PWM signal generating unit and outputting the alternating current to a direct current. It features.

In the present invention, the current value transmitting and receiving unit is characterized in that for receiving each DC output value corresponding to the remaining three groups of converters excluding itself from the cab computer.

In the present invention, the current value transceiver is characterized in that for receiving each DC output value corresponding to the four groups of converters from the cab computer.

In the present invention, the cab computer and the current value transceiver is characterized in that connected by a bus (bus).

According to the present invention, one auxiliary power converter is mounted on a power vehicle, and two auxiliary power converters are mounted on a single train, and two auxiliary power converters are mounted on each one. When each group of converters is operated, a total of four groups of converters are operated in parallel within the above one set.

Therefore, two auxiliary power converters provided as one unit of a high-speed train are composed of four converter groups, so that even if one auxiliary power converter or one converter group fails, the remaining converter groups may be damaged. Since the power is automatically output in response, the auxiliary power is normally supplied even when a specific auxiliary power converter is broken.

That is, the reliability of the service according to the supplementary power supply of the high speed train is improved, so that passengers of the high speed train may be provided with high quality service.

1 is a view showing an embodiment of a parallel operation apparatus of the auxiliary power converter for trains according to the present invention,

FIG. 2 is a block diagram illustrating an exemplary embodiment of the converter group illustrated in FIG. 1.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing an embodiment of a parallel operation apparatus of the auxiliary power converter for trains according to the present invention, the cab computer 10, the first and second auxiliary power converters 20 and 30, and the load ( 26). The first auxiliary power converter 20 includes first and second converter groups 22 and 24, and the second auxiliary power converter 30 includes first and second converter groups 32 and 34. It is provided.

In the drawing, first, the second and second converter groups 22, 24, 32, and 34, which are divided into the first and second auxiliary power converters 20 and 30, are provided with alternating current (AC). 383V) is converted into direct current (DC 670V) and provided to the common load 26.

At this time, the first and second converter groups 22, 24, 32, and 34 share the DC output values of the groups 22, 24, 32, and 34 through the cab computer 10, and share the shared DC output values. In view of this, the DC output provided to the common load 26 is automatically shared.

Therefore, even if any one of the four converter groups 22, 24, 32, 34 fails and stops driving, the common load 26 is normally supplied with power.

Referring to FIG. 2, the present invention is as follows.

FIG. 2 is a block diagram illustrating an embodiment of the converter groups 22, 24, 32, and 34 illustrated in FIG. 1. The current value transceiver 40, the compensator 42, the adder 44, and the first, Second, third subtractors 46, 54, 62, phase detector 48, voltage controller 50, multiplier 52, first, second current controllers 56, 64, first, second PWM Signal generators 58, 66, and first and second AC / DC converters 60, 68, respectively.

In the figure, the current value transceiver 40 collects its own DC output value, that is, the DC value output from the first and second AC / DC converters 60 and 68 and provides it to the cab computer 10. Each DC output value corresponding to the other three converter groups is received from the cab computer 10. At this time, the current value transmitter / receiver 40 may receive each DC output value corresponding to the remaining three converter groups except for itself from the cab computer 10, and all four converter groups 22 and 24 from the cab computer 10. , 32, 34 may receive respective direct current output values. In any case, all four groups of converters 22, 24, 32, and 34 should be able to collect the DC output of the other party, including themselves. The cab computer 10 and the current value transceiver 40 are connected by a bus. In order to collect the direct current output value, a direct current detection means may be used. Since this is a general technology, a detailed description thereof will be omitted.

The compensator 42 receives the respective DC output values corresponding to the four converter groups 22, 24, 32, and 34 from the current value transmitter / receiver 40 and outputs a compensation voltage corresponding to its own DC output to add the comparator ( 44).

The adder 44 adds and outputs the DC voltage of the common output terminal of the four converter groups 22, 24, 32, and 34 and the compensation voltage output from the compensator 42 to the first subtracter 46.

The first subtractor 46 subtracts the feedback DC voltage provided from the first AC / DC converter 60 from the output voltage of the adder 44, and outputs the feedback DC voltage to the voltage controller 50.

The voltage controller 50 controls the voltage according to the output voltage of the first subtractor 46 to output a voltage for DC output compensation to the multiplier 52.

The phase detector 48 detects the phase of the alternating current (AC 383V) provided by the vehicle, outputs sinθ corresponding to the phase, and provides the same to the multiplier 52.

The multiplier 52 multiplies the output voltage of the voltage controller 50 by the sin? Of the phase detector 48 to output a response current to the second and third subtractors 54 and 62.

The second subtractor 54 subtracts the first feedback current provided from the first AC / DC converter 60 from the response current of the multiplier 52 and outputs the first feedback current to the first current controller 56.

The first current controller 56 controls the output current of the second subtractor 54 to output a current for DC output compensation and provides the current to the first PWM signal generator 58.

The first PWM signal generator 58 generates a PWM signal corresponding to the output current of the first current controller 56 and provides it to the first AC / DC converter 60.

The first AC / DC converter 60 converts an AC (AC 383V) provided from its vehicle into a direct current (DC 670V) using the PWM signal of the first PWM signal generator 58 to convert a common load ( 26). In addition, the first AC / DC converter 60 provides a first feedback current to the second subtractor 54, and provides a feedback DC voltage to the first subtractor 46.

The third subtractor 62 subtracts and outputs the second feedback current provided from the second AC / DC converter 68 to the second current controller 64 from the response current of the multiplier 52.

The second current controller 64 controls the output current of the third subtractor 62 to output a current for DC output compensation and provides the current to the second PWM signal generator 66.

The second PWM signal generator 66 generates a PWM signal corresponding to the output current of the second current controller 64 and provides it to the second AC / DC converter 68.

The second AC / DC converter 68 converts an AC (AC 383V) provided from its vehicle into a direct current (DC 670V) using the PWM signal of the second PWM signal generator 66 to share a common load ( 26). In addition, the second AC / DC converter 68 provides a second feedback current to the third subtractor 62.

The technical spirit of the present invention has been described above with reference to the accompanying drawings, but this is by way of example only and not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (4)

Two auxiliary power converters are provided to train a vehicle, two converter groups are operated in each auxiliary power converter, and the four converter groups are operated in parallel. The converter group may include: a current value transmission / reception unit configured to collect its own DC output value and provide the same to the cab computer, and to receive respective DC output values corresponding to the respective converter groups from the cab computer; A compensator configured to receive respective DC output values corresponding to the four converter groups from the current value transmitter / receiver and output a compensation voltage corresponding to its DC output; An adder for adding and outputting a DC voltage of a common output terminal of the four converter groups and a compensation voltage output from the compensation unit; A first subtractor for subtracting and outputting a feedback DC voltage from an output voltage of the adder; A voltage controller for controlling a voltage according to an output voltage of the first subtractor to output a voltage for DC output compensation; A phase detector for detecting a phase of an alternating current provided by the vehicle and outputting sinθ corresponding to the phase; A multiplier for outputting a response current by multiplying the output voltage of the voltage controller by sinθ of the phase detector; A second subtractor which subtracts and outputs a first feedback current from a response current of the multiplier; A first current controller configured to control an output current of the second subtractor to output a current for DC output compensation; A first PWM signal generator for generating a PWM signal corresponding to the output current of the first current controller; Converts the alternating current provided from the vehicle into a direct current by using the PWM signal of the first PWM signal generator and provides a first feedback current to the second subtractor, and sends a feedback direct current voltage to the first subtractor Providing a first AC / DC converter; A third subtractor which subtracts and outputs a second feedback current from the response current of the multiplier; A second current controller configured to control an output current of the third subtractor to output a current for DC output compensation; A second PWM signal generator for generating a PWM signal corresponding to the output current of the second current controller; And a second alternating current / direct current converting unit converting an alternating current provided by the own vehicle into a direct current by using the PWM signal of the second PWM signal generating unit and outputting the alternating current to a direct current. Parallel operation device of the auxiliary power converter for trains. The method according to claim 1, And the current value transmitting / receiving unit receives respective DC output values corresponding to the remaining three groups of converters excluding itself from the cab computer. The method according to claim 1, And the current value transmitting / receiving unit receives respective direct current output values corresponding to the four converter groups from the cab computer. The method according to claim 1, Parallel operation apparatus of the auxiliary power converter for trains, characterized in that the cab computer and the current value transmission and reception unit is connected by a bus.