KR101742784B1

KR101742784B1 - Test device by mode type of Rollingstock Gate Drive Unit

Info

Publication number: KR101742784B1
Application number: KR1020150064812A
Authority: KR
Inventors: 정승택; 김성준
Original assignee: 한국철도공사
Priority date: 2015-05-08
Filing date: 2015-05-08
Publication date: 2017-06-15
Also published as: WO2016182130A1; KR20160131775A

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test apparatus for a gate drive for railroad cars,
Inverter Driving Method This is a technique for testing the gate drive, which is the driving part for driving the large capacity semiconductor of the electric railway vehicle, and realistic test method based on field data for each mode from the viewpoint of operating environment and operator It is a device that judges the parts by their waveforms and presents clear data. Through this, it is possible to prevent parts from being spread to medium and large parts by preventive maintenance of components and to stabilize operation of railway vehicles. The present invention provides a test apparatus for a gate drive for a railway vehicle, which can judge whether a gate drive for a railway car can be judged by measuring an output voltage and an output waveform.

Description

[0001] The present invention relates to a test apparatus for a gate drive for railroad cars,

The present invention relates to a test apparatus for a gate drive for a railway vehicle by mode, and more particularly, to a test apparatus for a gate drive for a railway car by a mode capable of judging whether or not a gate drive for a railway car can be judged by measuring an output voltage and an output waveform of the gate drive for a railway car. &Lt; / RTI >

The latest railway vehicles are predominantly electric vehicles powered by electric power,

With the advancement of advanced semiconductor technology, various types of power conversion devices have been used to supply the power and electric power required for the running of the railway vehicle through the electric and electronic control of the microprocessor.

The most representative of these is the large-capacity propulsion control system. The control system consists of a modular system in the form of a PCB.

The propulsion control device that converts the electric power required for running the electric railway vehicle to the traction motor is composed of a control unit, a driving unit, and a large-capacity power semiconductor.

In order to drive a large-capacity power semiconductors for railway vehicles, the traction motor is controlled by ON / OFF switching. In order to drive the traction motor, a part called a gate drive corresponding to a driving section for turning on / off the gate for a very short time is used. The mechanical and electrical characteristics are changed due to the heat generated during the switching operation, which can affect the performance of the vehicle and serious malfunctions during operation.

Therefore, it is a reality that a stable railway vehicle should be able to be operated only by periodical diagnosis and maintenance of the parts according to the traveling distance and time, and it is a reality that only the accidental failure occurs during operation.

In addition, various malfunctions and deteriorating faults are caused by the internal and external temperature environment during the operation of the gate drive, and the countermeasures by the maintenance personnel have many difficulties in the cause identification and deterioration diagnosis, and most gate drives This type of module is modularized and exposed to the lower part of the vehicle body, making it difficult to completely seal the vehicle. As a result, the environmental impact of the vehicle is received more than the inside of a vehicle equipped with an air conditioner or a heater. There is a tendency to change.

In addition, the conventional gate drive test can not be carried out, and it is mounted inside a converter or an inverter to test the entire operation, and it is a general maintenance method to simply replace a new product without any diagnosis even when a fault occurs during operation.

In order to solve this problem, it is necessary to develop a technique to perform periodic maintenance more efficiently.

Korean Patent No. 10-0924924 discloses a gate driver and a motor driving apparatus using the gate driver.

Korea registered patent [10-0924924] (Registration date: October 28, 2009)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a test apparatus for a gate drive for driving a large capacity semiconductor of an inverter- , It is possible to construct the operation test on the single product for each mode suitable for the operating condition and to make the measurement diagnosis at all times and on a regular basis through the determination of the waveform with the waveform graph, And to provide a test apparatus for a gate drive for a mode railway vehicle capable of judging whether or not a gate drive for a railway car can be safely operated in accordance with maintenance and prevention of a failure during a railway vehicle.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description .

According to an aspect of the present invention, there is provided an apparatus for testing a gate drive for a railway vehicle, the apparatus including: a variable voltage variable frequency system for driving a vehicle by receiving AC or DC from a catenary and supplying the AC to the traction motor; A temperature and humidity chamber (100) including a gate drive test jig (110) therein and matching a predetermined temperature and humidity to each other; A gate power unit 200 connected to a power terminal of the gate drive test jig 110 and supplying power to the gate drive test jig 110; An optical signal output unit 300 connected to the optical communication terminal of the gate drive test jig 110 and transmitting an optical signal to the gate drive test jig 110; A waveform measuring unit 400 connected to an output terminal of the gate drive test jig 110 for measuring a waveform of an output voltage; A voltage measuring unit 500 connected to an output terminal of the gate drive test jig 110 for measuring an output voltage; The temperature and humidity of the temperature and humidity chamber 100 are controlled by the temperature and humidity chamber 100, the gate power unit 200, the optical signal output unit 300, the waveform measuring unit 400 and the voltage measuring unit 500, A sequence controller 600 for controlling the gate power unit 200 and the optical signal output unit 300 and receiving the measurement results of the waveform measuring unit 400 and the voltage measuring unit 500; Humidity chamber 100 through the sequence controller 600 and controls the temperature and humidity of the gate power source unit 600 according to the rating and type of the component, 200 controls the gate drive test jig 110 to supply power and controls the optical signal output unit 300 to transmit the optical signal to the gate drive test jig 110 according to the type of the component, A MODE command unit 700 for receiving a measurement command from the waveform measurement unit 400 and the voltage measurement unit 500 and receiving a measurement result from the waveform measurement unit 400 and the voltage measurement unit 500; A data storage unit 800 connected to the MODE command unit 700 and storing the measurement results of the waveform measurement unit 400 and the voltage measurement unit 500; And a data display output unit 900 connected to the MODE instruction unit 700 and outputting the measurement results of the waveform measurement unit 400 and the voltage measurement unit 500.

The test apparatus of the gate drive for railway vehicles according to each mode is connected to the MODE command unit 700 and is connected to the gate drive unit for the railway car based on the measurement results of the waveform measuring unit 400 and the voltage measuring unit 500 And the computer unit 950 determines whether the gate drive for the railway car is good or bad based on the voltage width of the GATE ON voltage and the GATE OFF voltage and the minimum ON pulse width .

In addition, the MODE command unit 700 may select at least one of a selection mode of AVR / weak HI, a separate / integrated selection mode, a single / combination selection mode, and an automatic / manual selection mode (CON2 mode) in the first converter unit mode (AC1 mode), the second line converter unit mode (AC2 mode) in the case of using the alternating current or AC / DC combined voltage of the electric wire, The inverter device mode (INV mode) in the electric power system in which the voltage of the electric wire is combined with the direct current or the alternating current / direct current and the setting mode according to the setting of the user can be selected.

The apparatus for testing a gate drive for a railway vehicle according to an embodiment of the present invention has an effect that a gate drive for a railway car can be separately tested on the basis of waveforms of an output voltage and an output voltage.

In addition, since various modes can be selected, it is possible to test individual items of each foreign gate drive as well as a capacitor-exchangeable gate drive and a capacitor-integrated gate drive, and it is possible to test a single product using various environments.

In addition, the electric railway vehicle operates in the form of a faucet for AC use only, DC only, and teaching work, depending on the vehicle operation route. As a single part tester for core parts of railway vehicles, This is a device that implements a realistic test method based on field data for each mode in terms of the operating environment and the operator from the viewpoint of the operating environment and the operator. And the stabilization of the operation of the railway vehicle can be achieved.

In addition, considering the first design, production, and maintenance of a single unit testing system in the electric propulsion control system, which is the core technology of electric railway vehicles, it is possible to prevent (maintain) maintenance of foreign- It is possible to continuously reflect the operation of core parts that meet the needs of the maintenance person.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a test apparatus for a gate drive for a railway vehicle according to an embodiment of the present invention; FIG.
3 is a conceptual view of a capacitor-integrated gate drive;
4 is a conceptual view of a capacitor-exchangeable gate drive;
5 is a graph illustrating test results of a test apparatus for a gate drive for a railway vehicle according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concept of the term appropriately in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Further, it is to be understood that, unless otherwise defined, technical terms and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Descriptions of known functions and configurations that may be unnecessarily blurred are omitted. The following drawings are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other forms. In addition, like reference numerals designate like elements throughout the specification. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible.

Prior to the description, the terms used in this specification (and claims) will be briefly described.

The 'capacitor integrated gate driver 11' is a commonly used gate drive, and is a module (circuit board) in which a capacitor is integrated with a substrate (see FIG. 3).

The 'capacitor-exchangeable gate drive 12' refers to a gate drive in which only the capacitor module 10 can be separated and replaced. Here, the capacitor module 10 means that only the capacitors are formed on a separate circuit board. At this time, the capacitor module 10 is provided with a capacitor at its upper portion, and a connection pin electrically connected to the connection socket is provided at the lower portion (see FIG. 4).

A capacitor-integrated gate drive and a capacitor-exchangeable gate drive are collectively referred to as a gate drive.

That is, the gate drive is used in an inverter electric railway vehicle of a variable voltage variable frequency type in which alternating current or direct current is received from a catenary line and supplied to a traction motor to drive the vehicle.

The inverter is a gate drive circuit of a power semiconductor and receives a DC power of 100V and smoothing a square wave 55.6V and 50KHz power converted to AC power through a DA converter by using a plurality of parallel electrolytic capacitors through a gate drive, The control unit switches the power semiconductor for a very short time through the gate control optical signal according to the smoothed signal.

The gate drive is provided in a propulsion control device module referred to as an inverter device, and is modularly mounted on the lower part of the outside of the railway vehicle.

The capacitor is provided as an electrolytic capacitor, and a plurality of electrolytic capacitors are connected in parallel.

The gate drive is provided in a converter unit and an inverter unit of the propulsion control unit. When the alternating current is inputted through the AC / DC mixer, the gate drive unit converts the DC voltage to DC power through a converter unit to supply power to the inverter unit. The motor is driven by converting it into AC through the inverter section.

The converter unit is composed of two parallel units, and drives a power semiconductor with a total of eight gate drives of GA85A. The inverter unit is composed of a total of six gate drives to drive a power semiconductor.

The inverter unit receives the DC power of 100 V through the gate drive circuit of the power semiconductor, smoothes the square wave 55.6V, 50KHz power converted to the AC power through the DA converter by using the plurality of parallel electrolytic capacitors through the gate drive, The control unit switches the power semiconductor for a very short time through the gate control optical signal according to the smoothed signal.

The power conversion apparatus is constituted by a converter and an inverter power conversion apparatus in a dedicated AC section, a power conversion apparatus in an inverter dedicated section in a DC dedicated section, a converter and an inverter power conversion apparatus in a combined working period, The gate drive corresponding to the driving unit of the power semiconductor is mounted separately in each phase according to the configuration.

By measuring the output voltage (voltage and waveform) of the above-described capacitor-exchangeable gate drive or capacitor-exchangeable gate drive according to the test apparatus for a gate drive for railway vehicles according to an embodiment of the present invention, a capacitor- It is possible to accurately judge whether or not the exchangeable gate drive is correct.

1 and 2 are block diagrams of a test apparatus for a gate drive for a railway car according to an embodiment of the present invention. FIG. 3 is a conceptual diagram of a capacitor integrated gate drive, FIG. 4 is a conceptual view of a capacitor- And FIG. 5 is a graph for explaining a test result using a test apparatus of a gate drive for a railway vehicle according to an embodiment of the present invention.

1, an apparatus for testing a gate drive for a railway vehicle according to an embodiment of the present invention includes a variable voltage variable frequency inverter that receives AC or DC from a catenary and supplies the AC or DC to a traction motor to drive the vehicle A gate power supply unit 200, an optical signal output unit 300, a waveform measurement unit 400, a voltage measurement unit 500, and a voltage measurement unit 500. The test apparatus includes a temperature and humidity chamber 100, a gate power unit 200, A sequence control unit 600, a MODE instruction unit 700, a data storage unit 800, and a data display unit 900.

The temperature and humidity chamber 100 includes a gate drive test jig 110 therein and adjusts the predetermined temperature and humidity.

The temperature and humidity chamber 100 can be operated through the sequence control unit 600 based on the temperature and humidity values specified in the MODE command unit 700. The temperature and humidity required for the test are made to prepare for the test, And provides the environment (temperature and humidity) required for the test to the gate drive mounted on the test jig 110. This is because, in general, since the temperature at the site where the gate drive 11, 12 is installed is high, it is necessary to perform a test in an environment similar to a field as well as a measurement at a normal room temperature.

The gate power unit 200 is connected to the power terminal of the gate drive test jig 110 and supplies power to the gate drive test jig 110.

The gate drive test jig 110 supplies power to the power terminals of the gate drives 11 and 12, and the supplied power is supplied from the gate power unit 200. Since it is different according to the rating and type of the component, the instruction value given to the MODE instruction control unit 700 is designated through the sequence control unit 600 to which voltage should be input.

The optical signal output unit 300 is connected to the optical communication terminal of the gate drive test jig 110 and transmits the optical signal to the gate drive test jig 110.

The gate drive test jig 110 transmits an optical signal to the optical communication terminal of the gate drives 11 and 12, and a signal to be transmitted is received from the optical signal output unit 300. Since it depends on the rating and type of the component, the command value given to the MODE command control unit 700 specifies which optical signal should be transmitted through the sequence control unit 600. [

The waveform measuring unit 400 is connected to the output terminal of the gate drive test jig 110 and measures the waveform of the output voltage.

The voltage measuring unit 500 is connected to the output terminal of the gate drive test jig 110 and measures the output voltage.

The waveform measuring unit 400 and the voltage measuring unit 500 supply power to the power terminal of the gate drive test jig 110 for performing the test via the sequence control unit 600 in accordance with the command of the MODE command unit 700 And transmits the optical signal to the optical communication terminal of the gate drive test jig 110 and then outputs the output voltage outputted through the gate drive test jig 110 to the sequence control unit 600 through the MODE command unit 700 And outputs the data to the data display unit 900 and stores the data in the data storage unit 800.

The sequence control unit 600 is connected to the temperature and humidity chamber 100, the gate power unit 200, the optical signal output unit 300, the waveform measurement unit 400 and the voltage measurement unit 500, And controls the gate power unit 200 and the optical signal output unit 300 and receives the measurement results of the waveform measurement unit 400 and the voltage measurement unit 500. [

The MODE instruction unit 700 is connected to the sequence control unit 600 and controls the temperature and humidity chamber 100 through the sequence control unit 600 by setting or storing temperature and humidity required for the test, And controls the gate power supply unit 200 to supply power to the gate drive test jig 110 according to the type of the optical signal output unit 300. In accordance with the type of the component, And sends a measurement command to the waveform measuring unit 400 and the voltage measuring unit 500 and receives the measured result from the waveform measuring unit 400 and the voltage measuring unit 500.

The reference value for the determination of the test object can be set by combining the operating environment, the field experience (field data), the product specification, and the like, and sets the reference value of the test object matching the test MODE selection (S200).

The flow of the test first mounts the test object to the jig. Thereafter, the test MODE is selected. The test MODE is operated according to the reference value (see FIG. 5) for the judgment of the test object. The result is a voltage measurement and a waveform graph. At this time, it is possible to perform the judgment of the gate drive of the test stand product by the waveform graph.

The data storage unit 800 is connected to the MODE command unit 700 and stores measurement results of the waveform measurement unit 400 and the voltage measurement unit 500.

The data display output unit 900 is connected to the MODE command unit 700 and outputs a measurement result of the waveform measurement unit 400 and the voltage measurement unit 500.

2, the apparatus for testing a gate drive for a railway vehicle according to an embodiment of the present invention is characterized in that the test apparatus of the gate drive for railroad cars for each mode is connected to the MODE command unit 700, The computer unit 950 further includes a computer unit 950 for judging whether or not the gate drive for the railway car is appropriate based on the measurement results of the measuring unit 400 and the voltage measuring unit 500. The computer unit 950 compares the GATE ON voltage and the GATE (See FIG. 5A) and the minimum ON pulse width (see FIG. 5B) of the gate drive for the railway car.

FIG. 5 is a voltage waveform chart according to a test apparatus for a gate drive for a railway car according to an embodiment of the present invention, which is a basis for positive / negative judgment according to reference value setting, and is a result of a data display output portion.

Preferably, the time, the GATE ON voltage, and the GATE OFF voltage of FIG. 5 become a criterion for positive and negative judgment according to the setting of the reference value, and are characterized by a continuous form with a bending of the linear wave.

5, the gate drive outputs a linear waveform according to each mode, and the GATE ON voltage and the GATE OFF voltage are linearly outputted. The linear voltage and the minimum ON pulse width are set in accordance with the reference value setting, Negative judgment can be performed

At this time, the field data can be set as the reference value, and the voltage can be measured for each mode corresponding to the operating environment, and the voltage can be displayed as a waveform graph to determine the positive / negative judgment.

2, the MODE command unit 700 of the test apparatus for a gate drive for a railway vehicle according to an embodiment of the present invention includes an AVR / HI selection mode, a detached / A selection mode of at least one of an integrated selection mode, a single product / combination selection mode, and an automatic / manual selection mode can be selected and the voltage of the electric wire can be selected in the first converter device mode (CON1 mode) in the AC / (CON2 mode) in the case where the voltage of the catenary line is used for AC or AC / DC combined mode. Inverter device mode (INV mode) in the case where the voltage of the catenary is combined with DC or AC / And the setting mode according to the present invention can be selected.

Hereinafter, modes that can be selected by the MODE instruction unit 700 will be described.

The gate drive is particularly influenced by the operating environment, especially the temperature. It is set by the average temperature expressed as AVR, or the reference value is set as the highest temperature of the operating environment expressed as HI (AVR / (HI) selection mode).

In addition, the mode for selecting the detachable gate drive and the integrated gate drive mode (separate / integrated selection mode) can be selected in the form of a gate drive according to the manufacturing format and can be tested.

The single mode and the knitting mode mean the number of gate drives. The single mode is a mode for carrying out one individual test. The combination mode is a mode (single mode / Combination selection mode) can be selected.

In addition, the automatic and manual modes are modes (automatic / manual selection mode) for selecting whether to automatically execute all procedures from gate drive test to positive / negative judgment, whether or not to confirm after each step.

The CON1 mode is a mode of a converter device in which the voltage of a catenary line is combined with an alternating current or an alternating current and a direct current. This means that the converter 1 is equipped with four U, X, V and Y phases And the CON2 mode means the No. 2 converter. For example, four of the electric vehicles are mounted on the U, X, V, and Y phases.

The INV mode is a mode of an inverter device in which a voltage of a catenary line is combined with a direct current or alternating current and a direct current, and for example, six of the electric equipments are mounted as U, X, V, Y,

Depending on the type of vehicle, the name of the above device and the classification of the above may be different. In other countries, the basic idea is the same, but the mode may be different. Therefore, other modes (setting mode) may be required.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Temperature and humidity chamber
110: Gate drive test jig
200: Gate power source
300: Optical signal output section
400: Waveform measuring unit
500: voltage measuring unit
600: sequence control unit
700: MODE command control section
800: Data storage unit
900: Data output unit

Claims

An apparatus for testing a gate drive for a railway vehicle for each mode used in an inverter electric railway vehicle of a variable voltage variable frequency type in which alternating current or direct current is received from a catenary line and supplied to a traction motor to drive a vehicle,
A temperature and humidity chamber (100) including a gate drive test jig (110) inside and matching a predetermined temperature and humidity;
A gate power unit 200 connected to a power terminal of the gate drive test jig 110 and supplying power to the gate drive test jig 110;
An optical signal output unit 300 connected to the optical communication terminal of the gate drive test jig 110 and transmitting an optical signal to the gate drive test jig 110;
A waveform measuring unit 400 connected to an output terminal of the gate drive test jig 110 for measuring a waveform of an output voltage;
A voltage measuring unit 500 connected to an output terminal of the gate drive test jig 110 for measuring an output voltage;
The temperature and humidity of the temperature and humidity chamber 100 are controlled by the temperature and humidity chamber 100, the gate power unit 200, the optical signal output unit 300, the waveform measuring unit 400 and the voltage measuring unit 500, A sequence controller 600 for controlling the gate power unit 200 and the optical signal output unit 300 and receiving the measurement results of the waveform measuring unit 400 and the voltage measuring unit 500;
Humidity chamber 100 through the sequence controller 600 and controls the temperature and humidity of the gate power source unit 600 according to the rating and type of the component, 200 controls power supply to the gate drive test jig 110 and controls the optical signal output unit 300 to transmit the optical signal to the gate drive test jig 110 according to the type of the component, A MODE command unit 700 for receiving a measurement command from the waveform measurement unit 400 and the voltage measurement unit 500 and receiving a measurement result from the waveform measurement unit 400 and the voltage measurement unit 500;
A data storage unit 800 connected to the MODE command unit 700 and storing the measurement results of the waveform measurement unit 400 and the voltage measurement unit 500; And
A data display output unit 900 connected to the MODE instruction unit 700 and outputting measurement results of the waveform measurement unit 400 and the voltage measurement unit 500;
Lt; / RTI >
The test apparatus of the gate drive for railroad cars according to the mode
A computer unit 950 connected to the MODE command unit 700 for determining whether the gate drive for a railway car is good or bad based on the measurement results of the waveform measurement unit 400 and the voltage measurement unit 500;
Further comprising:
The computer unit 950
The gate drive for the railway car is determined based on the voltage width of the gate ON voltage and the gate OFF voltage and the minimum ON pulse width,
The MODE instruction unit 700
(AVR) / vulnerable temperature (HI) selection mode in which the test value is set by setting the reference value to the highest vulnerable temperature of the operating environment expressed as HI, a separate type / integral type selection mode in which the detachable gate drive and the integrated gate drive mode are selected, All the procedures from the single drive / train selection mode and gate drive test to the positive / negative determination, which selects one mode for individual test and the mode that goes according to railway vehicle combination in periodic maintenance test Or an automatic / manual selection mode for selecting whether to proceed automatically or at each step,
(CON2 mode) in the first converter device mode (CON1 mode) in the voltage method of the electric wire of alternating current or alternating current and direct current, the second converter device mode (CON2 mode) in the alternating current or bridge / It is possible to select any one of the inverter device mode (INV mode) and the setting mode according to the user's setting in the power supply system in which the voltage is used for both DC and AC /
X, V, and Y phases, and the CON2 mode has four U, X, V, and Y phases, and the INV mode has six U, X, V, Y, W, and Z phases of the gate drive.

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