CN220122772U - Single-phase inverter control circuit of detection vehicle - Google Patents
Single-phase inverter control circuit of detection vehicle Download PDFInfo
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- CN220122772U CN220122772U CN202321329943.XU CN202321329943U CN220122772U CN 220122772 U CN220122772 U CN 220122772U CN 202321329943 U CN202321329943 U CN 202321329943U CN 220122772 U CN220122772 U CN 220122772U
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- 238000001514 detection method Methods 0.000 title claims abstract description 76
- 238000004891 communication Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Inverter Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to a control circuit of a single-phase inverter of a detection vehicle, which comprises the following components: the device comprises a micro control unit, a switching value input module, a voltage signal input module, a current signal input module, a temperature signal input module, a power conversion module, a driving module, a switching value output module, a communication module, a power supply module, a plurality of current sensors, a plurality of temperature sensors, a status indicator lamp and a fan. The beneficial effects of the utility model are as follows: the driving module is used for generating SPWM waves to drive the single-phase inverter of the detection vehicle to work, and inversion output is carried out to ensure control stability; the device is provided with a plurality of current sensors and a plurality of temperature sensors, and is used for monitoring current and temperature data in a control circuit in real time so as to ensure stable operation of equipment; the single-phase inverter can ensure that the input power harmonic content is extremely large when the train accelerates or decelerates, and can work stably and reliably under the condition of serious electromagnetic interference.
Description
Technical Field
The utility model belongs to the technical field of single-phase inverters of detection vehicles, and particularly relates to a control circuit of a single-phase inverter of a detection vehicle.
Background
The power supply of the motor train unit detection vehicle is directly induced from the contact net, the voltage fluctuation range is large and reaches AC 276V-AC 496V, so that the load on the vehicle is often protected due to input undervoltage or overvoltage, and the normal operation of detection equipment is seriously influenced. In addition, when the train accelerates or decelerates, the harmonic content of the input power supply is extremely large, and the electromagnetic interference is serious.
The existing single-phase inverter of the detection vehicle lacks detection on voltage and current data of the inverter, lacks a driving source for driving an internal inversion module of the single-phase inverter of the detection vehicle to work, needs external driving input, lacks a uniform control module on the detection vehicle of the motor train unit to allocate the single-phase inverter of the detection vehicle to work, and feeds back the situation to an upper computer.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a control circuit for a single-phase inverter of a detection vehicle.
This kind of inspection car single-phase inverter control circuit includes: the system comprises a Micro Control Unit (MCU), a switching value input module, a voltage signal input module, a current signal input module, a temperature signal input module, a power conversion module, a driving module, a switching value output module, a communication module, a power supply module, a plurality of current sensors, a plurality of temperature sensors, a status indicator lamp and a fan;
the switching value input module is electrically connected with a contactor in the single-phase inverter of the detection vehicle through a contactor feedback circuit and is also electrically connected with the micro-control unit;
the voltage signal input module is electrically connected with the micro control unit, the input end of the single-phase inverter of the detection vehicle, the middle bus and the output end of the single-phase inverter of the detection vehicle; the voltage analog signals of the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle are obtained and uploaded to the micro control unit;
the current signal input module is electrically connected with the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle through the current sensor and is also electrically connected with the micro-control unit; the current analog signals of the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle are obtained and uploaded to the micro control unit;
the temperature signal input module is electrically connected with the fan and the inverter circuit in the single-phase inverter control circuit through the temperature sensor, is also electrically connected with the micro-control unit, and is used for acquiring temperature analog signals of the fan and the inverter circuit in the single-phase inverter control circuit and uploading the signals to the micro-control unit;
the power supply module is used for supplying power to each module in the single-phase inverter control circuit;
the power supply conversion module is electrically connected with the voltage output end of the single-phase inverter of the detection vehicle and is used for converting the voltage output by the single-phase inverter of the detection vehicle and the voltage output by the power supply module; the other modules in the single-phase inverter control circuit of the detection vehicle are also electrically connected;
the driving module is electrically connected with the micro control unit and the single-phase inverter of the detection vehicle;
the switching value output module is electrically connected with a contactor in the single-phase inverter of the detection vehicle through a contactor control circuit and is also electrically connected with a fan and a status indicator lamp; the state indicator lamp is used for indicating the working state of the single-phase inverter control circuit of the detection vehicle;
the communication module is electrically connected with the micro control unit and the upper computer;
the micro control unit is used for receiving the switch state of the contactor monitored by the contactor feedback circuit through the switch value input module; the detecting vehicle single-phase inverter is used for receiving and converting voltage analog signals of the input end, the middle bus and the output end of the detecting vehicle single-phase inverter uploaded by the voltage signal input module into digital signals; the detecting vehicle single-phase inverter comprises a detecting vehicle single-phase inverter input end, an intermediate bus and an output end, wherein the detecting vehicle single-phase inverter input end is used for receiving and uploading current signals; the temperature analog signal receiving module is used for receiving and converting the temperature analog signal uploaded by the temperature signal input module into a digital signal; the control module is used for outputting an instruction to the driving module, controlling the driving module to generate SPWM waves to drive the single-phase inverter of the detection vehicle to work, and performing inversion output to ensure control stability; the switching value output module is used for outputting instructions to the contactor, the fan and the status indicator lamp in the single-phase inverter of the detection vehicle to drive the contactor, the fan and the status indicator lamp in the single-phase inverter of the detection vehicle to work; the system is used for communicating with an upper computer through a communication module to carry out program upgrading or data downloading.
Preferably, the fans include a ventilation fan and a heat dissipation fan; the ventilation fan and the heat dissipation fan are both electrically connected with the micro-control unit, the ventilation fan is used for exchanging internal and external air, and the heat dissipation fan is used for dissipating heat of the micro-control unit.
Preferably, the power conversion module is used for converting the AC220V voltage output by the single-phase inverter of the detection vehicle into 12V, 5V and 3.3V voltages and supplying power to the other modules in the single-phase inverter control circuit.
Preferably, a clock module is further provided, and the clock module is electrically connected with the micro-control unit and is used for providing timing data for the micro-control unit.
Preferably, the system is also provided with a storage module, and the storage module is electrically connected with the micro-control unit and is used for storing the work log and fault information of the single-phase inverter control circuit of the detection vehicle; the micro control unit is used for outputting a storage instruction to the storage module and controlling the storage module to store.
The beneficial effects of the utility model are as follows:
the utility model designs a single-phase inverter control circuit of a detection vehicle, which is provided with a ventilation fan for exchanging internal and external air and a heat dissipation fan for dissipating heat of a micro control unit; the driving module is used for generating SPWM waves to drive the single-phase inverter of the detection vehicle to work, and inversion output is carried out to ensure control stability; the device is provided with a plurality of current sensors and a plurality of temperature sensors, and is used for monitoring current and temperature data in a control circuit in real time so as to ensure stable operation of equipment; the system is also provided with a state indicator lamp for indicating the working state of the single-phase inverter control circuit of the detection vehicle; the voltage signal input module is used for monitoring and detecting voltage signals in the single-phase inverter of the vehicle; the communication module is arranged to realize the communication between the micro control unit and the upper computer, and the program upgrading or the data downloading is carried out.
The control circuit can ensure that the input power harmonic content is extremely large when the single-phase inverter of the detection vehicle accelerates or decelerates the train, and can stably and reliably work under the condition of serious electromagnetic interference.
Drawings
Fig. 1 is a schematic diagram of a control circuit for a single-phase inverter of a test vehicle.
Fig. 2 is a schematic block diagram of a control circuit of a single-phase inverter of a test vehicle.
Detailed Description
The utility model is further described below with reference to examples. The following examples are presented only to aid in the understanding of the utility model. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present utility model without departing from the principles of the utility model, and such modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
As an embodiment, as shown in fig. 1 and 2, a detecting vehicle single-phase inverter control circuit installed in a vehicle upper cabinet includes: the system comprises a Micro Control Unit (MCU), a switching value input module, a voltage signal input module, a current signal input module, a temperature signal input module, a power conversion module, a driving module, a switching value output module, a communication module, a power supply module, a clock module, a storage module, a plurality of current sensors, a plurality of temperature sensors, a status indicator lamp and a fan; the fan comprises a ventilation fan and a heat dissipation fan; the ventilation fan and the heat dissipation fan are electrically connected with the micro-control unit, the ventilation fan is used for exchanging internal and external air, and the heat dissipation fan is used for dissipating heat of the micro-control unit;
the switching value input module is electrically connected with a contactor in the single-phase inverter of the detection vehicle through a contactor feedback circuit and is also electrically connected with the micro-control unit;
the voltage signal input module is electrically connected with the micro control unit, the input end of the single-phase inverter of the detection vehicle, the middle bus and the output end of the single-phase inverter of the detection vehicle; the voltage analog signals of the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle are obtained and uploaded to the micro control unit;
the current signal input module is electrically connected with the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle through the current sensor and is also electrically connected with the micro-control unit; the current analog signals of the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle are obtained and uploaded to the micro control unit;
the temperature signal input module is electrically connected with the fan and the inverter circuit in the single-phase inverter control circuit through the temperature sensor, is also electrically connected with the micro-control unit, and is used for acquiring temperature analog signals of the fan and the inverter circuit in the single-phase inverter control circuit and uploading the signals to the micro-control unit;
the power supply module supplies power to each module (such as a control board and a contactor) in the single-phase inverter control circuit through external AC 220V; the power supply module outputs AC220V to supply power to the fan;
the power supply conversion module is electrically connected with the voltage output end of the single-phase inverter of the detection vehicle and is used for converting the voltage output by the single-phase inverter of the detection vehicle and the voltage output by the power supply module; the other modules in the single-phase inverter control circuit of the detection vehicle are also electrically connected; the AC220V voltage output by the single-phase inverter of the detection vehicle is converted into 12V, 5V and 3.3V voltages, and power is supplied to other modules in the control circuit of the single-phase inverter;
the driving module is electrically connected with the micro control unit and the single-phase inverter of the detection vehicle;
the switching value output module is electrically connected with a contactor in the single-phase inverter of the detection vehicle through a contactor control circuit and is also electrically connected with a fan and a status indicator lamp; the state indicator lamp is used for indicating the working state of the single-phase inverter control circuit of the detection vehicle;
the communication module is electrically connected with the micro control unit and the upper computer;
the clock module is electrically connected with the micro-control unit and used for providing timing data for the micro-control unit;
the storage module is electrically connected with the micro-control unit and used for storing the work log and fault information of the single-phase inverter control circuit of the detection vehicle; the storage module has the functions of data recording, dumping, downloading and the like, records the running state and fault information of storage equipment, has a data recording period of not more than 1S, has a data storage time of not less than 7 days, and stores not less than 100 fault data;
the micro control unit is used for receiving the switch state of the contactor monitored by the contactor feedback circuit through the switch value input module; the detecting vehicle single-phase inverter is used for receiving and converting voltage analog signals of the input end, the middle bus and the output end of the detecting vehicle single-phase inverter uploaded by the voltage signal input module into digital signals; the detecting vehicle single-phase inverter comprises a detecting vehicle single-phase inverter input end, an intermediate bus and an output end, wherein the detecting vehicle single-phase inverter input end is used for receiving and uploading current signals; the temperature analog signal receiving module is used for receiving and converting the temperature analog signal uploaded by the temperature signal input module into a digital signal; the control module is used for outputting an instruction to the driving module, controlling the driving module to generate SPWM waves to drive the single-phase inverter of the detection vehicle to work, and performing inversion output to ensure control stability; the switching value output module is used for outputting instructions to the contactor, the fan and the status indicator lamp in the single-phase inverter of the detection vehicle to drive the contactor, the fan and the status indicator lamp in the single-phase inverter of the detection vehicle to work; the communication module is used for communicating with the upper computer to carry out program upgrading or data downloading; the micro control unit is used for outputting a storage instruction to the storage module and controlling the storage module to store.
The single-phase inverter of the detection vehicle comprises: the input circuit breaker, the filter, the three-phase rectifier bridge module, the H-bridge circuit composed of IGBT and the power frequency transformer;
the input end of the input breaker is electrically connected with single-phase alternating current output by a traction transformer on the motor train unit, the output end of the input breaker is electrically connected with the input end of the filter, the output end of the filter is electrically connected with the input end of the contactor, the output end of the contactor is electrically connected with the three-phase rectifier bridge module, and the contactor is also electrically connected with an external AC220V power supply; a precharge current limiting resistor and an input contactor which are mutually connected in parallel are also arranged on one connecting line between the contactor and the three-phase rectifier bridge module; the three-phase rectifier bridge module is electrically connected with an H-bridge circuit formed by IGBT, and a plurality of groups of capacitors are arranged between the three-phase rectifier bridge module and the H-bridge circuit formed by IGBT; the H-bridge circuit composed of IGBT is electrically connected with the power frequency transformer, and an inductor is arranged on one connecting line between the H-bridge circuit composed of IGBT and the power frequency transformer; the output end of the power frequency transformer is connected with a capacitor in parallel and then is electrically connected with the power supply input end of the motor train unit detection vehicle;
the input breaker is used for receiving the single-phase alternating current output by the traction transformer on the motor train unit, performing overcurrent protection and controlling the on-off of the single-phase alternating current;
the filter is used for filtering the single-phase alternating current received by the input circuit breaker;
the contactor is used for controlling the on-off of an external AC220V power supply;
the three-phase rectifier bridge module is used for receiving the single-phase alternating current and rectifying and outputting the single-phase alternating current into pulsating direct current;
the H-bridge circuit is composed of IGBT and is used for receiving the pulsating direct current and performing high-frequency inversion and voltage stabilization on the pulsating direct current;
the power frequency transformer is used for receiving the direct current processed by the H-bridge circuit formed by the IGBT and electrically isolating the direct current;
a current sensor is arranged between an input breaker and a filter in the single-phase inverter of the detection vehicle; a current sensor is arranged in front of the precharge capacitor between the three-phase rectifier bridge module and an H-bridge circuit consisting of IGBT; and a current sensor is arranged behind the power frequency transformer.
When the control circuit of the single-phase inverter of the detection vehicle works: the voltage signal input module acquires the voltage of the input end of the single-phase inverter of the detection vehicle and uploads the voltage to the micro control unit, and the micro control unit detects that the voltage of the input end is normal; the micro control unit closes the contactor through a contactor control circuit; inputting a single-phase AC400V power supply to a single-phase inverter of the detection vehicle, rectifying the voltage through a pre-charging current-limiting resistor and a three-phase rectifier bridge module, and rectifying the single-phase AC400V voltage into a direct-current voltage, wherein the direct-current voltage charges a pre-charging capacitor; after the micro control unit detects that the precharge capacitor is charged, an input contactor connected with the precharge current-limiting resistor in parallel is closed, and the precharge is completed; the micro control unit controls the driving module to output SPWM waves and drives an H-bridge circuit consisting of IGBT to perform inversion; the inverted alternating voltage is subjected to step-down filtering through a power frequency transformer, harmonic waves are filtered, electromagnetic interference is reduced, and the alternating voltage is changed into AC220V sine wave to be output.
Claims (5)
1. A single-phase inverter control circuit of a detection vehicle, comprising: the device comprises a micro control unit, a switching value input module, a voltage signal input module, a current signal input module, a temperature signal input module, a power conversion module, a driving module, a switching value output module, a communication module, a power supply module, a plurality of current sensors, a plurality of temperature sensors, a status indicator lamp and a fan;
the switching value input module is electrically connected with a contactor in the single-phase inverter of the detection vehicle through a contactor feedback circuit and is also electrically connected with the micro-control unit;
the voltage signal input module is electrically connected with the micro control unit, the input end of the single-phase inverter of the detection vehicle, the middle bus and the output end of the single-phase inverter of the detection vehicle; the voltage analog signals of the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle are obtained and uploaded to the micro control unit;
the current signal input module is electrically connected with the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle through the current sensor and is also electrically connected with the micro-control unit; the current analog signals of the input end, the middle bus and the output end of the single-phase inverter of the detection vehicle are obtained and uploaded to the micro control unit;
the temperature signal input module is electrically connected with the fan and the inverter circuit in the single-phase inverter control circuit through the temperature sensor, is also electrically connected with the micro-control unit, and is used for acquiring temperature analog signals of the fan and the inverter circuit in the single-phase inverter control circuit and uploading the signals to the micro-control unit;
the power supply module is used for supplying power to each module in the single-phase inverter control circuit;
the power supply conversion module is electrically connected with the voltage output end of the single-phase inverter of the detection vehicle and is used for converting the voltage output by the single-phase inverter of the detection vehicle and the voltage output by the power supply module; the other modules in the single-phase inverter control circuit of the detection vehicle are also electrically connected;
the driving module is electrically connected with the micro control unit and the single-phase inverter of the detection vehicle;
the switching value output module is electrically connected with a contactor in the single-phase inverter of the detection vehicle through a contactor control circuit and is also electrically connected with a fan and a status indicator lamp; the state indicator lamp is used for indicating the working state of the single-phase inverter control circuit of the detection vehicle;
the communication module is electrically connected with the micro control unit and the upper computer;
the micro control unit is used for receiving the switch state of the contactor monitored by the contactor feedback circuit through the switch value input module; the detecting vehicle single-phase inverter is used for receiving and converting voltage analog signals of the input end, the middle bus and the output end of the detecting vehicle single-phase inverter uploaded by the voltage signal input module into digital signals; the detecting vehicle single-phase inverter comprises a detecting vehicle single-phase inverter input end, an intermediate bus and an output end, wherein the detecting vehicle single-phase inverter input end is used for receiving and uploading current signals; the temperature analog signal receiving module is used for receiving and converting the temperature analog signal uploaded by the temperature signal input module into a digital signal; the driving module is used for outputting instructions to the driving module, and controlling the driving module to generate SPWM waves to drive the single-phase inverter of the detection vehicle to work; the switching value output module is used for outputting instructions to the contactor, the fan and the status indicator lamp in the single-phase inverter of the detection vehicle to drive the contactor, the fan and the status indicator lamp in the single-phase inverter of the detection vehicle to work; the communication module is used for communicating with the upper computer.
2. The inspection vehicle single-phase inverter control circuit according to claim 1, wherein: the fan comprises a ventilation fan and a heat dissipation fan; the ventilation fan and the heat dissipation fan are both electrically connected with the micro-control unit, the ventilation fan is used for exchanging internal and external air, and the heat dissipation fan is used for dissipating heat of the micro-control unit.
3. The inspection vehicle single-phase inverter control circuit according to claim 1, wherein: the power conversion module is used for converting the AC220V voltage output by the single-phase inverter of the detection vehicle into 12V, 5V and 3.3V voltages and supplying power to other modules in the control circuit of the single-phase inverter.
4. The inspection vehicle single-phase inverter control circuit according to claim 1, wherein: the clock module is electrically connected with the micro-control unit and used for providing timing data for the micro-control unit.
5. The inspection vehicle single-phase inverter control circuit according to claim 1, wherein: the storage module is electrically connected with the micro-control unit and used for storing the work log and fault information of the single-phase inverter control circuit of the detection vehicle; the micro control unit is used for outputting a storage instruction to the storage module and controlling the storage module to store.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321329943.XU CN220122772U (en) | 2023-05-30 | 2023-05-30 | Single-phase inverter control circuit of detection vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321329943.XU CN220122772U (en) | 2023-05-30 | 2023-05-30 | Single-phase inverter control circuit of detection vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN220122772U true CN220122772U (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321329943.XU Active CN220122772U (en) | 2023-05-30 | 2023-05-30 | Single-phase inverter control circuit of detection vehicle |
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| Country | Link |
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| CN (1) | CN220122772U (en) |
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2023
- 2023-05-30 CN CN202321329943.XU patent/CN220122772U/en active Active
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