KR100683590B1 - A system of VVVF inverter and aid-converter diagnose in High-speed railway - Google Patents

Abstract

The present invention relates to a VVVF inverter and an auxiliary converter diagnostic system of a high-speed railway vehicle, and more particularly, comprising: a VVVF inverter voltage detector for detecting output voltages of VVVF inverters; A VVVF inverter current detector for detecting current flowing through the VVVF inverters; A first signal converter converting the voltage and current of the VVVF inverter detected by the VVVF inverter voltage / current detector into a DC voltage; An auxiliary converter voltage detector for detecting output voltages of the auxiliary converters; An auxiliary converter current detector for detecting current flowing through the auxiliary converters; A second signal converter converting the voltage and current of the auxiliary converter detected by the auxiliary converter voltage / current detector into a DC voltage; A speed sensor for generating a pulse signal corresponding to the rotational speed of the wheel while the railway vehicle is running; A frequency / voltage converter converting the frequency of the speed detection pulse into a voltage; An A / D conversion unit for converting an analog railroad vehicle speed voltage into a digital signal; A vehicle speed detector for detecting a current traveling speed of the railway vehicle; A counter for counting pulses; A position information detector for calculating a travel distance of the railway vehicle compared to the number of pulses and detecting the position thereof; A gateway unit configured to receive information on various electronic devices installed in a vehicle through WTB of TCN communication; Receives and stores the output signal of each part in real time and includes speed and position information at the time when a specific VVVF inverter or auxiliary converter occurs, including propulsion, braking, wire voltage, braking pressure, traction, braking force, etc. It consists of a computer that stores and outputs the fault status information of the VVVF inverter or auxiliary converter along with the status information of the electronics.

Therefore, when constructing the measurement system of VVVF inverter and auxiliary converter, it is possible to minimize the production cost and time for designing the measurement equipment, and perform performance evaluation and troubleshooting related to several VVVF inverters and auxiliary converters simultaneously. In addition, it is possible to secure the safety and reliability of high-speed rail vehicles by simultaneously comparing and analyzing the output voltage and current of auxiliary converters and the various state information of the vehicle at the same time when a failure occurs in a specific VVVF inverter. It is possible to prevent large-scale accidents that may be caused by failures, as well as to analyze the various events that occur when the VVVF inverter is shut down in order to accurately identify the cause of failure.

VVVF inverter, auxiliary converter, position, speed, gateway

Description

System of VVVF inverter and aid-converter diagnose in High-speed railway             

1 is a block diagram of a system of the present invention;

Explanation of symbols on the main parts of the drawings

1: VVVF inverter 2: VVVF inverter voltage detector

3: VVVF inverter current detector 4,8: first and second signal converter

5: auxiliary converter 6: auxiliary converter voltage detector

7: auxiliary converter current detection unit 9: speed sensor

10: frequency / voltage converter 11: A / D converter

12: vehicle speed detection unit 13: counter

14: location information detection unit 15: gate way

16: computer 17: monitor

18: wired communication interface 19: wireless communication interface

20: railway operation management system

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a VVVF (VVVF) inverter and an auxiliary converter diagnostic system of a high speed railway vehicle, and more particularly, to driving voltages for various electric appliances installed in a high speed railway vehicle. VVVF Inverter and auxiliary converters that supply the system can be integrated and diagnosed with the status information of various electronic devices in the vehicle and the driving speed and driving position information of the vehicle through the WTB (Wire Train Bus) of TCN communication. It is.

That is, when constructing the measurement system of VVVF inverter and auxiliary converter in high speed railway vehicle, it is possible to minimize the manufacturing cost and time for designing the measuring equipment, and other VVVF inverter and auxiliary converter other than one VVVF inverter and auxiliary converter. Performance and fault diagnosis can be performed at the same time.In the event that a fault occurs in a specific VVVF inverter, it is possible to compare and analyze various state information of the vehicle, including the output voltage and current of the auxiliary converter, which changes every moment. The safety and reliability of high-speed railway vehicles can be secured, and large-scale accidents that can be caused by VVVF inverter failure can be prevented in advance. Vive of high-speed railway vehicle invented to understand accurately It relates to program the inverter and the auxiliary converter diagnostics system.

Recently, as the operation of high-speed railway vehicles increases, the need for vehicles with safety, punctuality, and comfort is gradually increasing.

The vehicle's electronics have a significant impact on the performance of high-speed rail vehicles. The size of the VVVF inverter is small, but in the event of a failure, it has adversely affected the propulsion system and the auxiliary power system.

Auxiliary converters that power VVVF inverters and other peripherals to drive fans for cooling and air circulation have typically been measured in separate test units.

However, since most of the data is recorded as analog values and ends with graph output, it is difficult to accurately analyze the data, and also provides a cause for the inaccuracy of data analysis.

In other words, in the past, the test was terminated mainly by receiving data using a laptop or outputting a graph using a recorder. Since the state check measurement of the VVVF inverter and the auxiliary converter was performed only in this place, the entire vehicle It was difficult to get accurate information on the performance of VVVF inverters and auxiliary converters at.

On the other hand, TCN communication is composed of WTB (Wire Train Bus) and MVB (Multifunction Vehicle Bus). When TCN communication is used, it is possible to greatly improve the expansion and probability of the system. Therefore, if a failure occurs in the electronics in a specific vehicle by not collecting the state information on the various electrical appliances of the vehicle, there is a problem that takes a long time to solve the failure.

In particular, in the case of the VVVF inverter and the auxiliary converter, a separate measurement system was built to install the sensor to diagnose the failure, but it was difficult to accurately diagnose the VVVF inverter because no information about the vehicle was known. .

The present invention has been made in order to solve such a conventional problem, the state information of the various electrical equipments in the vehicle input the state information of the VVVF inverter and the auxiliary converter installed in the high-speed railway vehicle through the WTB of TCN communication and the driving speed of the vehicle It is possible to minimize the production cost and design time of measurement equipment when configuring the measurement system of VVVF inverter and auxiliary converter by inputting and integrating and diagnosing them together with the driving position information and multiple VVVF inverters and auxiliary devices. It is possible to perform performance evaluation and fault diagnosis related to the converter at the same time.In the event of a fault in a specific VVVF inverter, it is possible to compare and analyze the output voltage, current, and various state information of the vehicle at the same time. Safety and reliability can be ensured and the VVVF inverter VBV inverter and auxiliary converter diagnosis system of high-speed railway vehicles that can accurately identify the cause of failure by not only preventing large accidents that can occur but also analyzing the various events occurring when the VVVF inverter shuts down. The purpose is to provide.

An object of the present invention described above, VVVF inverter voltage detection unit for detecting the output voltage of the VVVF inverters installed in each vehicle; A VVVF inverter current detector for detecting current flowing through VVVF inverters installed in each vehicle; A first signal converter for converting the voltage and current of the VVVF inverter detected by the VVVF inverter voltage / current detector into a DC voltage that can be recognized by a computer; An auxiliary converter voltage detector detecting an output voltage of the auxiliary converters installed in each vehicle; An auxiliary converter current detector for detecting current flowing through auxiliary converters installed in each vehicle; A second signal converter for converting the voltage and current of the auxiliary converter detected by the auxiliary converter voltage / current detector into a DC voltage that can be recognized by a computer; A speed sensor installed at the wheel of the railway vehicle and generating a pulse signal corresponding to the rotational speed of the wheel while the railway vehicle is traveling; A frequency / voltage converter converting the frequency of the intermittent pulse detected by the speed sensor into a voltage; An A / D converter converting the analog railroad vehicle speed voltage output from the frequency / voltage converter into a digital signal; A vehicle speed detector configured to receive an output signal of the A / D converter and detect a current traveling speed of a railway vehicle; A counter for counting intermittent pulses detected by the speed sensor; A position information detection unit which receives the output signal of the counter and calculates the traveling distance of the railway vehicle compared to the number of pulses and detects the position thereof; A gateway unit configured to receive information on various electronic devices installed in a vehicle through WTB of TCN communication; Receives and stores the output signal of each part in real time and includes speed and position information at the time when a specific VVVF inverter or auxiliary converter occurs, including propulsion, braking, wire voltage, braking pressure, traction, braking force, etc. It consists of a computer that stores and outputs the fault status information of the VVVF inverter or auxiliary converter together with the status information of the electronic equipment, and the computer displays various information directly on the monitor or outputs it to a remote railway operation management system through a wired / wireless communication interface. It can be achieved by making it possible.

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

1 shows a block diagram of a system of the present invention.

According to the present invention, the system comprises: a VVVF inverter voltage detector (2) for detecting output voltages of the VVVF inverters (1) installed in each vehicle;

A VVVF inverter current detector 3 for detecting current flowing through the VVVF inverters 1 installed in each vehicle;

A first signal converter (4) for converting the voltage and current of the VVVF inverters (1) detected by the VVVF inverter voltage / current detector (2) (3) into a DC voltage that can be recognized by the computer (16);

An auxiliary converter voltage detector 6 for detecting output voltages of the auxiliary converters 5 installed in each vehicle;

An auxiliary converter current detector 7 for detecting current flowing through the auxiliary converters 5 installed in each vehicle;

A second signal converter 8 for converting the voltage and current of the auxiliary converters 5 detected by the auxiliary converter voltage / current detectors 6 and 7 into a DC voltage that can be recognized by the computer 16; ;

A speed sensor 9 installed at a wheel of the railroad car and generating a pulse signal corresponding to the rotational speed of the wheel while the railroad car is running;

A frequency / voltage converter 10 for converting the frequency of the intermittent pulse detected by the speed sensor 9 into a voltage;

An A / D converter 11 for converting an analog railway vehicle speed voltage output from the frequency / voltage converter 10 into a digital signal;

A vehicle speed detector 12 which receives the output signal of the A / D converter 11 and detects a current traveling speed of the railway vehicle;

A counter (13) for counting intermittent pulses detected by the speed sensor (9);

A position information detector 14 for receiving the output signal of the counter 13 and calculating a traveling distance of the railway vehicle compared to the number of pulses and detecting the position thereof;

A gateway 15 for receiving and integrating information on various electronic devices installed in the vehicle through the WTB of TCN communication;

The output signal of each part is received in real time and stored, and at the same time, when a failure occurs in a specific VVVF inverter 1 or auxiliary converter 5, the speed, position information including propulsion, braking, wire voltage, braking pressure, The basic feature is that the computer 16 stores and outputs the fault status information of the corresponding VVVF inverter or auxiliary converter together with the status information of various electric appliances such as the traction force and the braking force.

In addition, the computer 16 displays various judgment information about the VVVF inverter and the auxiliary converters, the position, the speed information, and the status information about various peripheral devices directly on the monitor 17 in real time, or the wired / wireless communication interface 18. It is an additional feature to transmit to the railway operation management system 20 of the remote through the (19).

Referring to the operation and effect of the system of the present invention configured as described above are as follows.

First, the VVVF inverter voltage detector 2 and the VVVF inverter current detector 3 installed in each railway vehicle in the present invention system output the voltages outputted from the respective VVVF inverters 1 and the current flowing therein during the driving of the high speed railway vehicle. The signal is transmitted to the first signal converter 4.

Accordingly, in the first signal converter 4, a DC voltage capable of recognizing the voltage and current of the VVVF inverters 1 detected through the VVVF inverter voltage / current detectors 2 and 3 can be recognized by the computer 16. Is converted to the computer 16 and transferred to the computer 16.

In addition, the auxiliary converter voltage detector 6 and the auxiliary converter current detector 7 installed in each railway vehicle detect a voltage output from each of the auxiliary converters 5 and a current flowing therein during the driving of the high speed railway vehicle. It is transmitted to the signal converter (8).

Therefore, in the second signal converter 8, the voltage and current of the auxiliary converters 5 detected by the auxiliary converter voltage / current detectors 6 and 7 are converted into DC voltages that the computer 16 can recognize. The data is converted and transferred to the computer 16.

On the other hand, when the voltage and current for the VVVF inverter 1 and the auxiliary converters 5 installed in each vehicle of the high speed railway vehicle are detected as described above, the speed sensor 9 installed at the wheel of the railway vehicle is a The pulse signal corresponding to the rotational speed of the wheel while driving is continuously generated and outputted to the frequency / voltage converter 10 and the counter 13.

Accordingly, the frequency / voltage converter 10 converts the frequency of the intermittent pulse detected by the speed sensor 9 into an analog voltage and outputs the analog voltage to the A / D converter 11. The converting unit 11 converts the analog railway vehicle speed voltage output from the frequency / voltage converting unit 10 into a digital signal.

Therefore, the vehicle speed detector 12 receives the output signal of the A / D converter 11 and detects how much the current traveling speed of the railway vehicle is and transmits it to the computer 16.

In addition, since the counter 13 counts the intermittent pulses detected by the speed sensor 9 and sends them to the position information detector 14, the position information detector 14 inputs the output signal of the counter 13. The distance of the railway vehicle compared to the number of pulses is calculated to detect the position of the vehicle.

At this time, the calculation method for detecting the position of the railway vehicle in the position information detection unit 14 is based on the number of pulses generated when the wheel of the railway vehicle is rotated one turn and the circumferential length data of the wheel in the counter 13 When the number of pulses input is multiplied by the circumferential length of the wheel, the starting point of the railway vehicle is calculated as "0", and it is continuously calculated as to how many Km points the railway vehicle is currently traveling. It is recognized and transmitted to the computer 16.

On the other hand, when the driving speed and position information as well as the voltage and current state information for the VVVF inverter 1 and the auxiliary converters 5 while driving the high-speed railway vehicle are continuously detected and inputted to the computer 16 at the same time. The gateway unit 15 collects information on peripheral devices, including information on various electrical equipments installed in the high speed railway vehicle, and transmits the collected information about the peripheral devices to the computer 16.

In this case, the information collected through the gateway 15 may include propulsion, braking, VCB state information, wire voltage, braking pressure, traction force, braking force, acceleration of the motor, state information of the battery charger, and power analysis information. .

Therefore, the computer 16 receives the output signal of each part in real time and stores it in itself, and at the same time performs the VVVF inverter 1 and auxiliary converter 5 state diagnosis programs stored therein to execute any VVVF. It is determined whether a failure occurs in the inverter 1 or the auxiliary converter 5.

As such, when the high-speed railway vehicle is driving in the computer 16, the voltage and current states of the VVVF inverter 1 or the auxiliary converter 5 are determined to determine that the specific VVVF inverter 1 or the auxiliary converter 5 has failed. If the current traveling speed and the point at which the position is running (KP; Kilo Post), and the propulsion, braking, VCB state information, wire voltage, Dynamic pressure, traction force, braking force, vibration acceleration of the motor, status information of the battery charger and power analysis information, etc. are all stored together with the failure information of the VVVF inverter 1 or the auxiliary converter 5, and the monitor 17 and By displaying this on the same output device, accurate position and speed tracking is possible, including the status of various electronics at the point where the corresponding VVVF inverter (1) or auxiliary converter (5) has failed. All.

In addition, since the computer 16 is further provided with a wired / wireless communication interface 18 and 19, a failure including the voltage / current of the detected VVVF inverter 1 or the auxiliary converter 5 as necessary. Information, status information of various electrical equipment, its position and speed information, etc. are transmitted to a remote railway operation management system 20.

Therefore, a manager working in the railway operation management system 20 at a remote location has caused a failure in which VVVF inverter or auxiliary converter of the VVVF inverter 1 or auxiliary converter 5 of the corresponding railway vehicle is traveling for a certain section. It is possible to recognize the problem correctly and follow up as soon as necessary.

This invention can be implemented in other various forms, without deviating from the mind or main characteristic. Therefore, the above-described embodiments are merely examples in all respects and should not be interpreted limitedly.

The scope of the present invention is shown by the scope of the claims, which are not limited by the specification text, and all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

According to the present invention as described in detail above, the state information of the various electronic equipment in the vehicle input through the WTB of the TCN communication as well as the state information of the VVVF inverter and the auxiliary converter in the high-speed railway vehicle running, and the driving speed and driving position of the vehicle By receiving the information at the same time and diagnosing the failure of the VVVF inverter and the auxiliary converter, it is possible to minimize the manufacturing cost of the measuring equipment and the time to design when configuring the measurement system of the VVVF inverter and the auxiliary converter. Simultaneous performance evaluation and fault diagnosis related to the inverter and auxiliary converter can be performed at the same time. Also, when a failure occurs in a specific VVVF inverter, the output voltage and current of the auxiliary converter and the various state information of the vehicle that change every time can be compared and analyzed simultaneously. To ensure safety and reliability of high-speed railway vehicles In addition, it is possible to prevent large-scale accidents that may occur due to VVVF inverter failure, as well as to sequentially analyze various events occurring when the VVVF inverter is shut down, so that the cause of failure can be pinpointed. will be.

Claims (4)

A VVVF inverter voltage detector for detecting output voltages of VVVF inverters installed in each vehicle; A VVVF inverter current detector for detecting current flowing through VVVF inverters installed in each vehicle; A first signal converter for converting the voltage and current of the VVVF inverter detected by the VVVF inverter voltage / current detector into a DC voltage that can be recognized by a computer; An auxiliary converter voltage detector detecting an output voltage of the auxiliary converters installed in each vehicle; An auxiliary converter current detector for detecting current flowing through auxiliary converters installed in each vehicle; A second signal converter for converting the voltage and current of the auxiliary converter detected by the auxiliary converter voltage / current detector into a DC voltage that can be recognized by a computer; A speed sensor installed at the wheel of the railway vehicle and generating a pulse signal corresponding to the rotational speed of the wheel while the railway vehicle is traveling; A frequency / voltage converter converting the frequency of the intermittent pulse detected by the speed sensor into a voltage; An A / D converter converting the analog railroad vehicle speed voltage output from the frequency / voltage converter into a digital signal; A vehicle speed detector configured to receive an output signal of the A / D converter and detect a current traveling speed of a railway vehicle; A counter for counting intermittent pulses detected by the speed sensor; A position information detection unit which receives the output signal of the counter and calculates the traveling distance of the railway vehicle compared to the number of pulses and detects the position thereof; A gateway unit configured to receive information on various electronic devices installed in a vehicle through WTB of TCN communication; Receives and memorizes the output signal of each part in real time, and when a failure occurs in a specific VVVF inverter or auxiliary converter, the state of failure of the corresponding VVVF inverter or auxiliary converter together with the status information of various electric appliances including the speed and position information at that time It is composed of a computer that stores information in itself and transmits it in real time to a railway operation management system through a wired or wireless communication interface. When a failure occurs in a specific VVVF inverter or auxiliary converter of a high speed railway vehicle, the computer displays the voltage and current information of the corresponding VVVF inverter or auxiliary converter together with the status information, the position and the speed information of the various electrical equipments at that time. A VVE inverter and auxiliary converter diagnostic system for a high speed railway vehicle, which is output to a monitor. delete delete delete

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