CN105305839A - Auxiliary power converter for railway vehicle - Google Patents
Auxiliary power converter for railway vehicle Download PDFInfo
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- CN105305839A CN105305839A CN201410346436.6A CN201410346436A CN105305839A CN 105305839 A CN105305839 A CN 105305839A CN 201410346436 A CN201410346436 A CN 201410346436A CN 105305839 A CN105305839 A CN 105305839A
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Abstract
The invention provides an auxiliary power converter for a railway vehicle. The auxiliary power converter comprises an input filter module used for filtering an input three-phase power supply; a pre-charge and rectifier module used for converting the filtered input three-phase power supply into a DC320V direct current voltage; an intelligent power inversion module used for inverting the converted DC320V direct current voltage into an AC 230V60Hz output power supply; a sine filter module used for filtering the AC 230V60Hz output power supply through an LC circuit; and a control module used for providing a DC24V contactor pull-in power supply to the pre-charge and rectifier module, providing a DC110V working power supply of the intelligent power inversion module, providing a startup working signal to the intelligent power inversion module by compiling a main program and an interruption program and receiving and processing a fault signal fed back by the intelligent power inversion module. According to the auxiliary power converter provided by the invention, the three-phase power supply input is converted into single-phase power supply output, the problem that an existing ordinary frequency converter only has single-phase power supply input and single-phase power supply output, and the application requirements of electric appliances on suburban railway vehicles are satisfied. The frequency converter is controlled by a singlechip, monitors the working state in real time and has multiple protection functions.
Description
Technical field
The present invention relates to trolley coach accessory power supply frequency converter.
Background technology
The rated frequency of European vehicle auxiliary electric power supply mostly is 60Hz, under frequency is 60Hz operating mode, if directly use the equipment (as microwave oven, roaster, reach in freezer etc.) that supply frequency is 50Hz, because the rated frequency of operating voltage is inconsistent, be easy to the damage causing power consumption equipment, so need a kind of accessory power supply frequency converter adapting to trolley coach of developmental research.
At present, the use of frequency converter mainly adjusts the power of motor, realizes the variable-speed operation of motor, comparatively lay particular emphasis on the starting current controlling motor, the torque etc. reducing electric power line voltage fluctuation, adjustment motor comparatively speaking, divide this kind of frequency converter from the strict sense and can not be defined as power converter category.In addition, even if the common frequency converter on market can realize the frequency translation of power supply, be also only single phase poaer supply input, single phase poaer supply exports, and the input power that rail vehicle can provide is three-phase, therefore need to study a kind of frequency converter that the input of the three phase mains of vehicle can be become single phase poaer supply and export.
Summary of the invention
The object of this invention is to provide the accessory power supply frequency converter that a kind of three phase mains input meeting vehicle becomes single phase poaer supply output, to meet the instructions for use of electric equipment on car.
For achieving the above object, the invention provides a kind of trolley coach accessory power supply frequency converter, it is characterized in that comprising:
Input filter module, carries out filtering to the three phase mains of input;
Precharge and rectification module, convert filtered three-phase input ac power to DC320V direct voltage;
DC320V direct voltage inversion after changing is AC230V50Hz out-put supply by intelligent power inversion module;
Sinusoidal filtration module, carries out filtering by lc circuit to AC230V50Hz out-put supply;
Control module, primarily of enabling signal receiver module, input voltage sampling module, DC power supply module, relay adhesive and state detection module, single-chip microcomputer computing module, inversion driving chip, output voltage sampling module, output current sampling module, temperature anomaly detection module, voltage stabilizing correcting module, malfunction coefficient module composition, wherein:
The enabling signal that the confirmation of receipt of enabling signal receiver module provides from vehicle;
Input voltage sampling module is sampled to the input voltage that vehicle provides, and is transferred to single-chip microcomputer and carries out the under-voltage of input voltage and overvoltage and detect;
DC power supply module carries out filtering to input power, prevents surge impact voltage, provides DC24V contactor adhesive power supply to precharge and rectification module simultaneously, provides DC110V working power to intelligent power inversion module;
Relay adhesive and state detection module are used for controlling the relay adhesive of precharge and rectification module and whether detect adhesive action correct;
Single-chip microcomputer computing module is used for realizing to the confirmation of enabling signal, judge the whether under-voltage or overvoltage of input voltage, judge that whether relay adhesive action correct, send inversion instruction, judge the whether under-voltage or overvoltage of output voltage, judge output current whether short circuit or overload, judge temperature whether exception, carry out voltage stabilizing waveform side-play amount calculating, send failure code;
Inversion driving chip produces SPWM ripple inversion instruction to intelligent power inversion module;
Output voltage sampling module is sampled to output voltage, and is transferred to single-chip microcomputer and carries out the under-voltage of output voltage and overvoltage and detect;
Output current sampling module is sampled to the electric current exported, and is transferred to the over load detection that single-chip microcomputer carries out output current;
The changing value of temperature anomaly detection module to PT100 resistance processes to be sent into single-chip microcomputer again and detects, for judging radiator whether overtemperature;
Voltage stabilizing correcting module carries out side-play amount calculating, and as found, output voltage waveforms is unstable, be then transferred to single-chip microcomputer and carry out correction pulsewidth, send renewal drive singal to intelligent power inversion module;
Malfunction coefficient module drives the 8 segment numeral display tubes of, shows corresponding failure code.
Filter in input filter module adopts the NF311A30/02 of 380V, 30A.
The pre-charge circuit of precharge and rectification module is made up of 1 relay, 2 resistance, three-phase commutation bridges, and relay adopts the G8P-1A4TP/DC24V model of Omron Corp, and resistance selects RX20-50W-150 Ω; The three-phase commutation bridge model of rectification circuit is the GBPC3510W of U.S. fairchild.
The IPM of intelligent power inversion module adopts Mitsubishi PS21A7A.
Sinusoidal filtration module adopts LC filter circuit, and the inductance selected parameter of sinusoidal filter is 1.5mH35A, and electric capacity selected parameter is 450V100uF.
The driving chip model that control module adopts is M57962, and the model that single-chip microcomputer adopts is STM32F103.
The present invention is by the connection control of input filter module, precharge and rectification module, intelligent power inversion module, sinusoidal filtration module, control module, achieve three phase mains input and become single phase poaer supply output, solve current common frequency converter only single phase poaer supply input single-phase power supply output problem, meet the instructions for use of electric equipment on trolley coach vehicle.Frequency converter adopts Single-chip Controlling, and real time monitoring operating state, possesses multiple protection functions.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the specific embodiment of the invention;
Fig. 2 is control module main program flow chart;
Fig. 3 is control module interrupt routine flow chart;
Fig. 4 is outline drawing of the present invention.
Embodiment
With reference to Fig. 1, the specific embodiment of the invention comprises input filter module 2, precharge and rectification module 3, intelligent power inversion module 4, sinusoidal filtration module 5, control module 9, current transformer 6, voltage transformer 8, enabling signal sky open 10, X1, X2, X3 of input filter module 2 connect U, V, W phase of the input power 1 of vehicle respectively, and X4, X5, X6 of input filter module 2 connect X4, X5, X6 of precharge and rectification module 3 and the X2 of control module 9 respectively, X1, X2 of precharge and rectification module 3 connect X1, X2 of intelligent power inversion module 4, the X3 of the X3 link control module 9 of precharge and rectification module 3, control module 9 provides 24V relay adhesive power supply to precharge and rectification module 3, X5, X6 of intelligent power inversion module 4 connect inductance and electric capacity respectively, the X4 of control module 9 connects the X3 of intelligent power inversion module 4, X5 stitch 1 and the stitch 2 of control module 9 are connected X4 stitch 1 and the stitch 2 of intelligent power inversion module 4 respectively, control module 9 is by providing startup working signal to intelligent power inversion module, and receive and process the fault-signal of intelligent power inversion module feedback, the feature of its main program performed is in device power, initialization and self-inspection qualified after, start to receive enabling signal, judge whether the input power that vehicle provides exists under-voltage, overvoltage phenomenon, after voltage reaches set point, start attracting electric relay, and send out inversion instruction to intelligent power inversion module, then interruption is opened, start to repeat judgement and patrol and examine fault, the feature of the interrupt routine that control module performs is after the voltage reading the output of intelligent power inversion module, current value, judge to export and whether there is under-voltage, overvoltage, overcurrent, overload phenomenon, and calculated by side-play amount, as found, output voltage is unstable, then carry out correction pulsewidth, send renewal drive singal to intelligent power inversion module, the stitch 1 of the X6 of current transformer link control module 9 and stitch 2, the stitch 3 of the X6 of voltage transformer 8 link control module 9 and stitch 4, enabling signal sky opens X1 stitch 1 and the stitch 2 of START1 and the START2 enabling signal difference link control module 9 of 10.
With reference to Fig. 2, the main program that control module of the present invention performs comprises the following steps:
(1) first carry out electrification reset, then equipment starts initialization, judges that whether self-inspection is qualified, then receiving the enabling signal that vehicle provides in this way, if not being, again carrying out self-inspection;
(2) after the enabling signal that provides of vehicle is provided, judge whether the input supply voltage that vehicle provides is less than AC197V, then report corresponding failure code 2 in this way, if not being, continue to judge whether input supply voltage is greater than AC250V, then report corresponding failure code 1 in this way, if not being then time delay 5s, time delay object passes through R11, R12 charges to subsequent capacitance, after voltage reaches a set point, and after relay adhesive DC24V power supply is supplied to precharge and rectification module by control module, relay adhesive also judges that whether adhesive action is correct, as failure code 0 is then reported in non-adhesive,
(3) after attracting electric relay and control module start after DC110V working power is supplied to intelligent power inversion module send out an inversion instruction, then open interruption, now start judgement and patrol and examine fault, then carry out troubleshooting in this way, and carry out failed storage, if not being, continue to patrol and examine fault.
With reference to Fig. 3, the interrupt routine that control module performs comprises the following steps:
(1) compose variable-definition, then determine whether generic failure, carry out malfunction coefficient in this way, and exit; If not, then read-out voltage value, then read current value;
(2), after read-out voltage current value, judge whether output voltage is less than AC195V, carry out malfunction coefficient in this way, and exit; If not being, continuing to judge whether output voltage is greater than AC253V, then carrying out malfunction coefficient in this way, and exit; If not being, continue to judge that output current is under 1.2 times of operating modes of load current value, the duration will keep 60s, if be less than 60s, then and malfunction coefficient, and exit; Whether if not being, continue to judge to export to transship, Rule of judgment is: 1.1 times of overload energy continuous firing 1min, protects immediately for 2 times, then carries out malfunction coefficient in this way, and exit; If not being, carrying out temperature anomaly detection, judging whether radiator temperature is greater than 85 ± 5 DEG C, then carrying out malfunction coefficient in this way, if not being, carry out side-play amount calculating, percent harmonic distortion is less than 3%;
(3) side-play amount is as unstable in discovery output voltage after calculating, and needs to revise pulsewidth, then carries out renewal and drive, and exit.
Filter in input filter module adopts the NF311A30/02 of 380V, 30A.
Precharge and rectification module are made up of 1 relay, 2 resistance, three-phase commutation bridges, and relay adopts the G8P-1A4TP/DC24V model of Omron Corp, and resistance selects RX20-50W-150 Ω; The three-phase commutation bridge model of rectification circuit is the GBPC3510W of U.S. fairchild.
The IPM of intelligent power inversion module adopts Mitsubishi PS21A7A.
Sinusoidal filtration module adopts LC filter circuit, and the inductance selected parameter of sinusoidal filter is 1.5mH35A, and electric capacity selected parameter is 450V100uF.
The driving chip model that control module adopts is M57962, and the model that single-chip microcomputer adopts is STM32F103.
In circuit, the capacity of Support Capacitor allowance when design selection is comparatively large, and its advantage can make output voltage ripple reduce; Drive circuit in control loop adopts drive level exclusive circuit, its advantage can the jamproof ability of intensifier circuit, driving frequency is chosen as 24K, its advantage can reduce noise when inductance band carries work significantly, the inductance value of output inductor can be reduced simultaneously, reduce volume and the weight of inductance; Being can greatly improve the anti-vibrating and impact ability of Whole Equipment by said structure design, providing possibility for meeting trolley coach practice operating mode.This frequency converter, by the control circuit of the components and parts and optimal design of selecting large allowance, improves Chinese People's Anti-Japanese Military and Political College's load shock ability.Frequency converter considers inductance at output filtering some importance, suitably adds the magnetic flux of iron core, and its advantage can make loss and caloric value on inductance reduce, and improves device efficiency.The radiator simultaneously selected is comparatively large, and can realize Natural Heat Convection during normal work, radiating effect is better.
With reference to Fig. 4, frequency converter profile of the present invention adopts triangular structure 15, saves volume and installing space, can customize, be arranged in telephone table according to vehicle actual installation demand; Operating state display panel 13 designs in equipment front, and with the charactron of, can the operating state of display system and various failure code, and drive plate is arranged near IGBT module, makes drive plate output to the lead-in wire of IGBT the shortest; Binding post 12 adopts preposition mounting structure, facilitates wiring, and tie pole 11 is arranged on the right of binding post 12, and adopt the structure of tie pole 1 fixed beam, facilitate binding, 14 is handles.
Overall work process:
Trolley coach accessory power supply frequency converter can be arranged on (as in built-in wardrobe between triangle) in the dining car of rail vehicle, input power (voltage form: 3AC230V60Hz) can obtain from rail vehicle, and out-put supply directly can put into the equipment (as microwave oven, roaster, reach in freezer etc.) that voltage form is AC230V50Hz.First carry out electrification reset before equipment work, then equipment starts initialization, judges the enabling signal that the qualified rear reception vehicle of self-inspection provides.
After receiving the enabling signal that vehicle provides, judge whether the input power that vehicle provides exists under-voltage and overvoltage phenomenon, as there is no then time delay 5s, time delay object is charged to subsequent capacitance by R11, R12, after voltage reaches a set point, then attracting electric relay, by R11, R12 short circuit, meanwhile, alternating voltage is converted to DC320V direct voltage by three-phase commutation bridge.
After attracting electric relay, control module starts to send out inversion instruction, carry out full-bridge inverting by intelligent power inversion module, finally by LC filtering, voltage pulse output is filtered into level and smooth sinusoidal voltage, also AC230V50Hz power supply is namely outputed, can for the equipment use of this voltage form.
As there is dependent failure in use procedure, according to the operating state display panel (failure code numeral) in apparatus front panel, see table 1, corresponding fault inquiry and debugging can be carried out.
Table 1CPU plate display implication
Claims (6)
1. a trolley coach accessory power supply frequency converter, is characterized in that comprising:
Input filter module, carries out filtering to the three phase mains of input;
Precharge and rectification module, convert filtered three-phase input ac power to DC320V direct voltage;
DC320V direct voltage inversion after changing is AC230V60Hz out-put supply by intelligent power inversion module;
Sinusoidal filtration module, carries out filtering by lc circuit to AC230V60Hz out-put supply;
Control module, primarily of enabling signal receiver module, input voltage sampling module, DC power supply module, relay adhesive and state detection module, single-chip microcomputer computing module, inversion driving chip, output voltage sampling module, output current sampling module, temperature anomaly detection module, voltage stabilizing correcting module, malfunction coefficient module composition, wherein:
The enabling signal that the confirmation of receipt of enabling signal receiver module provides from vehicle;
Input voltage sampling module is sampled to the input voltage that vehicle provides, and is transferred to single-chip microcomputer and carries out the under-voltage of input voltage and overvoltage and detect;
DC power supply module carries out filtering to input power, prevents surge impact voltage, provides DC24V contactor adhesive power supply to precharge and rectification module simultaneously, provides DC110V working power to intelligent power inversion module;
Relay adhesive and state detection module are used for controlling the relay adhesive of precharge and rectification module and whether detect adhesive action correct;
Single-chip microcomputer computing module is used for realizing to the confirmation of enabling signal, judge the whether under-voltage or overvoltage of input voltage, judge that whether relay adhesive action correct, send inversion instruction, judge the whether under-voltage or overvoltage of output voltage, judge output current whether short circuit or overload, judge temperature whether exception, carry out voltage stabilizing waveform side-play amount calculating, send failure code;
Inversion driving chip produces SPWM ripple inversion instruction to intelligent power inversion module;
Output voltage sampling module is sampled to output voltage, and is transferred to single-chip microcomputer and carries out the under-voltage of output voltage and overvoltage and detect;
Output current sampling module is sampled to the electric current exported, and is transferred to the over load detection that single-chip microcomputer carries out output current;
The changing value of temperature anomaly detection module to PT100 resistance processes to be sent into single-chip microcomputer again and detects, for judging radiator whether overtemperature;
Voltage stabilizing correcting module carries out side-play amount calculating, and as found, output voltage waveforms is unstable, be then transferred to single-chip microcomputer and carry out correction pulsewidth, send renewal drive singal to intelligent power inversion module;
Malfunction coefficient module drives the 8 segment numeral display tubes of, shows corresponding failure code.
2. trolley coach accessory power supply frequency converter according to claim 1, is characterized in that: the filter in input filter module adopts the NF311A30/02 of 380V, 30A.
3. trolley coach accessory power supply frequency converter according to claim 1, it is characterized in that: the pre-charge circuit of precharge and rectification module is made up of 1 relay, 2 resistance, three-phase commutation bridges, relay adopts the G8P-1A4TP/DC24V model of Omron Corp, and resistance selects RX20-50W-150 Ω; The three-phase commutation bridge model of rectification circuit is the GBPC3510W of U.S. fairchild.
4. trolley coach accessory power supply frequency converter according to claim 1, is characterized in that: the IPM of intelligent power inversion module adopts Mitsubishi PS21A7A.
5. trolley coach accessory power supply frequency converter according to claim 1, is characterized in that: sinusoidal filtration module adopts LC filter circuit, and the inductance selected parameter of sinusoidal filter is 1.5mH35A, and electric capacity selected parameter is 450V100uF.
6. trolley coach accessory power supply frequency converter according to claim 1, is characterized in that: the driving chip model that control module adopts is M57962, and the model that single-chip microcomputer adopts is STM32F103.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410346436.6A CN105305839A (en) | 2014-07-21 | 2014-07-21 | Auxiliary power converter for railway vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410346436.6A CN105305839A (en) | 2014-07-21 | 2014-07-21 | Auxiliary power converter for railway vehicle |
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| CN105305839A true CN105305839A (en) | 2016-02-03 |
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| CN201410346436.6A Pending CN105305839A (en) | 2014-07-21 | 2014-07-21 | Auxiliary power converter for railway vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208739A (en) * | 2016-07-29 | 2016-12-07 | 芜湖迈特电子科技有限公司 | From cooling-down type slip-off preventing vehicle-mounted inverter |
| CN106787783A (en) * | 2017-01-06 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | A kind of Wide Band Power origin system |
| CN107370154A (en) * | 2017-08-16 | 2017-11-21 | 威海广泰空港设备股份有限公司 | The aircraft power truck of one key power supply |
| CN112072754A (en) * | 2020-09-22 | 2020-12-11 | 禹创半导体(深圳)有限公司 | Application method of digital intelligent pre-charging mechanism in driving chip |
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| CN201004605Y (en) * | 2007-01-24 | 2008-01-09 | 天津市艾雷特电气仪表有限公司 | Special middle frequency conversion power supply device |
| CN201898446U (en) * | 2010-12-20 | 2011-07-13 | 青岛四方车辆研究所有限公司 | China railway high-speed 2 (CRH2) motor train unit ground power supply source |
| CN202634294U (en) * | 2012-07-11 | 2012-12-26 | 杨湘 | Frequency converter for energy-saving power generator for drilling |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201004605Y (en) * | 2007-01-24 | 2008-01-09 | 天津市艾雷特电气仪表有限公司 | Special middle frequency conversion power supply device |
| CN201898446U (en) * | 2010-12-20 | 2011-07-13 | 青岛四方车辆研究所有限公司 | China railway high-speed 2 (CRH2) motor train unit ground power supply source |
| CN202634294U (en) * | 2012-07-11 | 2012-12-26 | 杨湘 | Frequency converter for energy-saving power generator for drilling |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208739A (en) * | 2016-07-29 | 2016-12-07 | 芜湖迈特电子科技有限公司 | From cooling-down type slip-off preventing vehicle-mounted inverter |
| CN106208739B (en) * | 2016-07-29 | 2019-05-10 | 芜湖迈特电子科技有限公司 | From cooling-down type anti-dropout vehicle-mounted inverter |
| CN106787783A (en) * | 2017-01-06 | 2017-05-31 | 云南电网有限责任公司电力科学研究院 | A kind of Wide Band Power origin system |
| CN106787783B (en) * | 2017-01-06 | 2023-09-15 | 云南电网有限责任公司电力科学研究院 | Broadband power source system |
| CN107370154A (en) * | 2017-08-16 | 2017-11-21 | 威海广泰空港设备股份有限公司 | The aircraft power truck of one key power supply |
| CN107370154B (en) * | 2017-08-16 | 2024-01-30 | 威海广泰空港设备股份有限公司 | Aviation power supply vehicle powered by one key |
| CN112072754A (en) * | 2020-09-22 | 2020-12-11 | 禹创半导体(深圳)有限公司 | Application method of digital intelligent pre-charging mechanism in driving chip |
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Application publication date: 20160203 |