CN109450262B - Auxiliary variable-current power unit of highly-integrated low-floor tramcar - Google Patents
Auxiliary variable-current power unit of highly-integrated low-floor tramcar Download PDFInfo
- Publication number
- CN109450262B CN109450262B CN201811645664.8A CN201811645664A CN109450262B CN 109450262 B CN109450262 B CN 109450262B CN 201811645664 A CN201811645664 A CN 201811645664A CN 109450262 B CN109450262 B CN 109450262B
- Authority
- CN
- China
- Prior art keywords
- igbt
- circuit
- inverter circuit
- current
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
Abstract
The invention discloses a highly integrated low-floor tramcar auxiliary converter power unit, which integrates an H-bridge full-bridge inverter circuit, a bidirectional DC-DC rectifier circuit and a three-phase inverter circuit into a power module with high power density and is applied to an integrated traction auxiliary converter; the traction auxiliary converter integrates the traction system and the auxiliary converter power module in one converter cabinet, and the traction system and the auxiliary converter power module share one set of water-cooling heat dissipation system. The invention solves the problems of large occupied space, long circuit and complicated wiring caused by the independent arrangement of the traction converter system and the auxiliary converter system; the problems of single topological structure and low power density of a power module circuit are solved; the invention uniformly sets the water cooling system, and solves the problems of dispersion of the water cooling system and large heat dissipation power loss in the prior art.
Description
Technical Field
The invention belongs to the technical field of tramcars, relates to a power unit, and particularly relates to a highly integrated auxiliary variable-current power unit of a low-floor tramcar.
Background
The urban traffic is increasingly crowded in the current society, the low-floor tramcar can greatly relieve the urban traffic pressure, and the low-floor tramcar has the advantages of short construction period, low cost and the like, and is more and more widely accepted and applied in various big cities.
However, the low-floor vehicle has a small roof space due to its unique structural characteristics, and in common urban public transportation such as low-floor tramcars, the traction converter and the auxiliary converter are often separately arranged and installed in a narrow space of the vehicle, which causes dispersion of an electrical structure and complex circuits in the converter, and brings inconvenience to maintenance. In addition, the existing low-floor vehicle adopts an independent traction converter and an independent auxiliary converter, a brake resistor and cooling unit and a passenger room air conditioning unit are arranged between the traction inverter and the auxiliary inverter at intervals, an auxiliary system needs to get power from a middle loop of the traction system, the transmission distance of middle voltage is long, the main circuit stray inductance is large, the peak voltage is overhigh, the device is damaged, the layout of the existing heat dissipation system is dispersed, and the heat dissipation efficiency is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a highly integrated low-floor tramcar auxiliary variable-current power unit.
The purpose of the invention is realized by the following technical scheme:
the highly integrated low-floor tramcar auxiliary current conversion power unit integrates an H-bridge full-bridge inverter circuit, a bidirectional DC-DC rectifier circuit, a three-phase inverter circuit, a current detection circuit, an RC absorption circuit and an IGBT drive circuit into a power module with high power density, and is applied to an integrated traction auxiliary converter; the traction auxiliary converter integrates the traction system and the auxiliary converter power module in one converter cabinet, and the traction system and the auxiliary converter power module share one set of water-cooling heat dissipation system.
Further, the H-bridge full-bridge inverter circuit is composed of two insulated gate bipolar transistors.
Further, the H-bridge full-bridge inverter circuit is connected with an IGBT drive board.
Further, the H-bridge full-bridge inverter circuit is further connected with a current sensor.
Further, the water-cooling heat dissipation system comprises a water-cooling plate, wherein power devices of the auxiliary variable-current power units are arranged on two side surfaces of the water-cooling plate; the two side surfaces of the water cooling plate are respectively an A surface and a B surface.
Further, the surface A is provided with a three-phase inverter circuit, and the three-phase inverter circuit is connected with an IGBT drive board; the surface A is also provided with a first signal conditioning plate; the first signal conditioning board receives the electric signal sent by the controller, processes the electric signal and transmits the processed electric signal to the IGBT drive board, the IGBT drive board controls the on-off of the IGBT, meanwhile, the IGBT drive board feeds back the electric signal to the first signal conditioning board, and the IGBT switch state signal is fed back to the control unit after the processing of the first signal conditioning board; the three-phase inverter circuit is provided with a current sensor for detecting the output current of the three-phase inverter circuit; the A surface is also provided with a grounding wire frame for providing a grounding mounting point for the current sensor; the IGBT is connected to the intermediate direct current circuit through the direct current input composite busbar and is connected with an external alternating current load through an alternating current output composite busbar output terminal; the IGBT alternating current output end is connected with the alternating current output composite busbar through the short circuit copper bar, and the alternating current output composite busbar is connected with a current sensor.
Furthermore, the IGBT driving board is welded on the IGBT through a welding terminal of the IGBT; the signal conditioning board is installed on the water-cooling board through an insulating pad column.
Furthermore, an H-bridge inverter circuit consisting of two IBGT is installed on the surface B, the H-bridge inverter circuit is also connected with a GBT drive board, and the GBT drive board is welded on the IGBT through a welding terminal of the IGBT; a second signal conditioning plate is arranged on the surface B of the water cooling plate at the front end of the IGBT drive plate through an insulating pad column, receives an electric signal sent by the controller, transmits the electric signal to the second IGBT drive plate after processing, controls the on-off of the IGBT through the second IGBT drive plate, simultaneously feeds back the electric signal to the second signal conditioning plate through the second IGBT drive plate, and feeds back an IGBT on-off state signal to the control unit after processing by the second signal conditioning plate; the output circuit of the H-bridge inverter circuit is provided with a current sensor; and the surface B is also provided with a bidirectional DC/DC rectifying circuit.
The invention has the following beneficial effects:
the invention solves the problems of large occupied space, long circuit and complicated wiring caused by the independent arrangement of the traction converter system and the auxiliary converter system; the problems of single topological structure and low power density of a power module circuit are solved; the invention uniformly sets the water cooling system, and solves the problems of dispersion of the water cooling system and large heat dissipation power loss in the prior art.
Drawings
FIG. 1 is a schematic diagram of a main circuit of a traction-assist converter of the present invention;
FIG. 2 is a schematic diagram of a main circuit of the auxiliary variable current power module of the present invention;
FIG. 3 is a schematic view of the installation of the A-side device of the water-cooling plate 1 of the present invention;
FIG. 4 is a side view of the power module assembly of the present invention;
FIG. 5 is a schematic view of the installation of the B-side device of the water cooling plate 1 according to the present invention;
FIG. 6 is a schematic view of the installation of a water-cooled plate B-side composite busbar according to the present invention;
FIG. 7 is a wiring diagram of the DC/DC full bridge rectification RC absorption loop of the present invention;
FIG. 8 is a side view of the module assembly of the present invention shown in side B;
fig. 9 is a schematic diagram of an auxiliary variable power unit installation location.
Detailed Description
The invention discloses a highly integrated low-floor tramcar auxiliary current converting power unit, which integrates an H-bridge full-bridge inverter circuit A, a bidirectional DC-DC rectifier circuit B, a three-phase inverter circuit C, a current detection circuit, an RC absorption circuit and an IGBT drive circuit into a power module with high power density and is applied to an integrated traction auxiliary current transformer; the traction auxiliary converter integrates the traction system and the auxiliary converter power module in one converter cabinet, and the traction system and the auxiliary converter power module share one set of water-cooling heat dissipation system.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2:
h bridge main circuit part:
h bridge full-bridge inverter circuit: the H-bridge full-bridge inverter circuit is composed of two insulated gate bipolar transistors (IBGT), namely insulated gate bipolar transistors (IBGT) with V1-V2 being 1700V/225A in the figure.
IGBT drive plate: in the figure, DRV1 to DRV2 are IGBT drive boards, and control the switching of V1 to V2.
A current sensor: in the figure, TA8 is a current sensor for detecting the output current of the H-bridge full-bridge inverter circuit and performing overcurrent protection in due time.
The main circuit part of the DC/DC full-bridge rectifier:
bidirectional DC-DC rectifying circuit: in the figure, D1-D4 are diodes which form a DC-DC full bridge rectifying circuit.
RC absorption circuit: R1-R3 are three parallel absorption resistors and form an RC absorption circuit together with an absorption capacitor connected in series with C1-C2, and the RC absorption circuit is connected with the bidirectional DC-DC rectification circuit B and is used for absorbing overvoltage when the diode is reversely recovered.
Three-phase inverter main circuit part:
three-phase inverter circuit: in the figure, V3-V5 are IBGT (insulated gate bipolar transistor) of 1700V/225A, which forms a three-phase inverter circuit.
IGBT drive circuit: in the figure, DRV 3-DRV 5 are IGBT drive boards, carry out switch drive on V3-V5, and simultaneously feed back IGBT switch state signals to a control unit.
The current detection circuit: in the figure, TA 1-TA 3 are current sensors, which detect the output current of the three-phase inverter circuit, and transmit the current state signal to the control unit for timely overcurrent protection.
The auxiliary variable-current power unit is based on a water-cooling plate 1, power devices are arranged on two sides of the water-cooling plate 1 according to an A surface and a B surface, and the specific arrangement scheme is as follows:
three IBGT (insulated gate bipolar transistor) 2 are installed on the surface A of the water cooling plate 1, wherein V3-V5 form a three-phase inverter circuit, DRV 3-DRV 5 of three IGBT driving plates 3 are welded on the IGBT2 through welding terminals carried by the IGBT2, and V3-V5 are driven to be switched. At the front end of the IGBT drive plate 3, a first signal conditioning plate 4 is installed on the water cooling plate 1 through an insulating pad column, a receiving controller sends an electric signal, the electric signal is processed and then transmitted to the drive plate, the on-off of the IGBT is controlled through the drive plate, meanwhile, the drive plate feeds back the electric signal to the signal conditioning plate, and the state signal of the IGBT switch is fed back to a control unit after being processed by the first signal conditioning plate 4. The output circuit is provided with a current sensor 5, detects the output current of the three-phase inverter circuit, and transmits a current state signal to the control unit for overcurrent protection if necessary. And the A surface is also provided with a grounding wire frame 6 for providing a grounding mounting point for the current sensor 5. The A-side device installation schematic diagram of the water cooling plate 1 is shown in FIG. 3.
The IGBT is connected to the intermediate direct current circuit through the direct current input composite busbar 11, and is connected with an external alternating current load through the output terminal of the alternating current output composite busbar 12. The IGBT alternating current output end is connected with an alternating current output composite busbar 12 after being connected through a short circuit copper bar 10, and a current sensor is connected to the alternating current output composite busbar. As shown in fig. 4.
Two IBGT (insulated gate bipolar transistor) 2 are installed on the B surface of the water cooling plate 1, wherein V1-V2 form an H bridge inverter circuit, DRV 1-DRV 2 of the two driving plates 3 are welded on the IGBT2 through welding terminals of the IGBT2, and V3-V5 are driven to be switched. At the front end of the IGBT drive board 3, the second signal conditioning board 8 is installed on the surface B of the water cooling board 1 through an insulating pad column, the receiving controller sends an electric signal, the electric signal is processed and then transmitted to the drive board, the IGBT drive board controls the on-off of the IGBT, meanwhile, the IGBT drive board feeds back the electric signal to the signal conditioning board, and the signal is processed by the signal conditioning board and then feeds back an IGBT switch state signal to the control unit. The output circuit is provided with a current sensor 5, detects the output current of the H-bridge inverter circuit, simultaneously transmits a current state signal to the control unit, and performs overcurrent protection if necessary. The surface B is also provided with four diodes 7: D1-D4 to form a bidirectional DC/DC rectification circuit. The B-side device installation schematic diagram of the water cooling plate 1 is shown in FIG. 5.
The IGBT is connected to the intermediate direct current circuit through a direct current input composite busbar 15, and is connected with an external alternating current load through an alternating current output composite busbar 16 output terminal. The IGBT output end is connected with an alternating current output composite busbar 16 after being connected through a short circuit copper bar 10, a current sensor 5 is connected on the alternating current output composite busbar, and the current sensor 5 carries out current detection on the H-bridge inverter circuit. Referring to fig. 6, a schematic diagram of the installation of the composite busbar on the B surface of the water-cooling plate.
The diode 7 is connected with an external circuit through a composite busbar 13, the composite busbar 13 is connected through an internal circuit, and three absorption resistors 9 are connected in parallel by using flexible connecting lines and then connected in series with an absorption capacitor 14 to form the composite busbar with the RC absorption circuit. See the DC/DC full bridge rectifying RC snubber circuit wiring diagram of fig. 7 and the module assembly diagram B of fig. 8. The power module of the invention is mechanically mounted to the converter by means of three long screw assemblies 17, 18, 19 (as shown in fig. 4), which have an anti-trip function.
The installation position of the auxiliary variable current power unit in the traction auxiliary converter is as shown in the auxiliary variable current power unit installation position diagram of fig. 9, in the diagram, the auxiliary variable current power unit F is arranged between a 24-hour power module D and a charger module J, and the left side of the charger module J is also provided with a traction module Q.
In summary, the traction converter and the auxiliary converter are integrated into one traction auxiliary converter, further, the overall structure of the traction auxiliary converter is divided into four modularized variable-current power units, and the characteristics of miniaturization, light weight and modularization of the variable-current power units are applied to realize the power transmission of the low-floor tramcar.
Claims (2)
1. A highly integrated low-floor tramcar auxiliary current transformation power unit is characterized in that an H-bridge full-bridge inverter circuit (A), a bidirectional DC-DC rectifier circuit (B), a three-phase inverter circuit (C), a current detection circuit, an RC absorption circuit and an IGBT drive circuit are integrated into a power module with high power density and applied to an integrated traction auxiliary current transformer; the traction auxiliary converter integrates the traction system and the auxiliary converter power unit in one converter cabinet, and the traction system and the auxiliary converter power unit share a set of water-cooling heat dissipation system; the H-bridge full-bridge inverter circuit (A) consists of two IGBTs; the H-bridge full-bridge inverter circuit (A) is connected with a second IGBT drive board; the H-bridge full-bridge inverter circuit (A) is also connected with a current sensor (TA 8); the water-cooling heat dissipation system comprises a water-cooling plate (1), wherein power devices of auxiliary variable-current power units are arranged on two side surfaces of the water-cooling plate (1); two side surfaces of the water cooling plate (1) are respectively an A surface and a B surface; the surface A is provided with a three-phase inverter circuit, and the three-phase inverter circuit is connected with a first IGBT drive board; the surface A is also provided with a first signal conditioning plate (4); the first signal conditioning board (4) receives the electric signal sent by the control unit, processes the electric signal and transmits the processed electric signal to the first IGBT drive board, the on-off of the IGBT is controlled through the first IGBT drive board, meanwhile, the first IGBT drive board feeds back the electric signal to the first signal conditioning board (4), and the IGBT on-off state signal is fed back to the control unit after the processing of the first signal conditioning board (4); the three-phase inverter circuit is provided with a current sensor group (5) for detecting the output current of the three-phase inverter circuit; the A surface is also provided with a grounding wire frame (6) for providing a grounding mounting point for the current sensor group (5); the IGBT is connected to the intermediate direct current circuit through a direct current input composite busbar (11) and is connected with an external alternating current load through an output terminal of an alternating current output composite busbar (12); the IGBT alternating current output end is connected with an alternating current output composite bus bar (12) after being connected through a short circuit copper bar (10), and the alternating current output composite bus bar is connected with a current sensor group (5); the alternating current output composite busbar (12) directly penetrates through the current sensor group (5); the first IGBT driving board is welded to the IGBT through a welding terminal of the IGBT; the first signal conditioning plate (4) is installed on the water cooling plate (1) through an insulating padding column.
2. The highly integrated low-floor tramcar auxiliary variable current power unit according to claim 1, characterized in that the surface B is provided with an H-bridge full-bridge inverter circuit (a) composed of two IGBTs (2), the H-bridge full-bridge inverter circuit (a) is further connected with a second IGBT driver board, and the second IGBT driver board is welded to the two IGBTs (2) through welding terminals of the two IGBTs (2); a second signal conditioning plate (8) is arranged on the surface B of the water cooling plate at the front end of the second IGBT drive plate through an insulating pad column, receives an electric signal sent by the control unit, transmits the processed electric signal to the second IGBT drive plate, controls the on-off of the IGBT through the second IGBT drive plate, feeds back the electric signal to the second signal conditioning plate (8) through the second IGBT drive plate, and feeds back an IGBT on-off state signal to the control unit after the electric signal is processed by the second signal conditioning plate (8); the output circuit of the H bridge full bridge inverter circuit is provided with a current sensor (TA 8); and the surface B is also provided with a bidirectional DC-DC rectifying circuit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810540766 | 2018-05-30 | ||
| CN2018105407667 | 2018-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109450262A CN109450262A (en) | 2019-03-08 |
| CN109450262B true CN109450262B (en) | 2021-11-05 |
Family
ID=65542262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811645664.8A Active CN109450262B (en) | 2018-05-30 | 2018-12-29 | Auxiliary variable-current power unit of highly-integrated low-floor tramcar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109450262B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110829797B (en) * | 2019-11-01 | 2022-08-05 | 中车永济电机有限公司 | Water and electricity separation type diesel locomotive pulls auxiliary power module |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431289B (en) * | 2008-12-06 | 2010-12-29 | 永济新时速电机电器有限责任公司 | Traction auxiliary power supply integrated deflector |
| CN207098959U (en) * | 2017-09-07 | 2018-03-13 | 中车永济电机有限公司 | Water cooling substrate and the integrated auxiliary power module of commutation inversion |
| CN208836005U (en) * | 2018-05-30 | 2019-05-07 | 西安中车永电电气有限公司 | A kind of highly integrated low-floor tramcar auxiliary converter power cell |
-
2018
- 2018-12-29 CN CN201811645664.8A patent/CN109450262B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109450262A (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11329572B2 (en) | Semiconductor device | |
| CN102044985B (en) | Phase module for three-level integrated gate-commutated thyristor frequency converter | |
| CN104201911A (en) | Metro traction inversion chopping power unit | |
| WO2018103125A1 (en) | Traction power module | |
| WO2016107452A1 (en) | Direct current breaker bridge module | |
| CN105048799A (en) | Novel brake chopper power unit | |
| CN104796010A (en) | Large-capacity inverter chopper power unit | |
| CN108494264A (en) | A kind of highly integrated light-weighted power device | |
| CN109450262B (en) | Auxiliary variable-current power unit of highly-integrated low-floor tramcar | |
| CN208836005U (en) | A kind of highly integrated low-floor tramcar auxiliary converter power cell | |
| CN110943599B (en) | Multifunctional efficient power unit and power circuit thereof | |
| CN101902119B (en) | Brake power device and brake wave chopper | |
| CN103401437A (en) | IGBT converter chopping module | |
| CN110855158A (en) | Converter module and converter | |
| CN110365086A (en) | A kind of highly integrated charger power cell | |
| CN104135169A (en) | Metro air cooling converter system | |
| CN211183807U (en) | Charger power device | |
| CN206226313U (en) | A kind of double inversion modules of high-power IGBT | |
| CN103354231A (en) | IGBT power unit and sub-module for VSC-HVDC (voltage source converter high voltage direct current) | |
| CN214592401U (en) | Integrated power unit module | |
| CN204906180U (en) | Novel braking copped wave power unit | |
| CN205356202U (en) | A postponing implementation braking circuit for electronic round of truck | |
| CN210016398U (en) | Frequency converter driving conversion plate | |
| US10819087B2 (en) | Systems and methods for a vehicle inverter connection bus | |
| CN112350587A (en) | Traction-assisted converter and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |