Power concentrated type internal combustion multiple unit train power supply system

A technology for power supply systems and EMUs, which is applied to transmission devices with reciprocating piston internal combustion engines, etc., can solve the problems of high noise, poor economy, and inability to meet the traction performance and resistance braking performance of EMUs, and achieve low noise pollution. High maintenance cost, satisfying the effect of traction performance and resistance braking performance

Pending Publication Date: 2019-07-12
CRRC ZIYANG CO LTD
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AI-Extracted Technical Summary

Problems solved by technology

The AC auxiliary generator is used for train power supply, and its power supply is used as emergency fault power supply when the small diesel generator set fails. It...
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Method used

" cooling fan inverter " outputs the circuit control diesel engine cooling fan speed of 0~500V, 0~87.4Hz according to diesel engine cooling water temperature, guarantees the heat dissipation of diesel engine.
By using the AC auxiliary generator of single winding to provide power source for the electric train train power supply system, when the AC auxiliary generator is designed, the voltage characteristics of the AC auxiliary generator can be sent at diesel engine speed 1250rpm to meet the power supply of the EMU train The required voltage and its capacity can also meet the capacity requirements of the AC auxiliary transmission system and the power supply of the EMU train, and can reduce the fuel consumption of the locomotive.
[0023] "auxiliary traffic cont...
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Abstract

The invention discloses a power concentrated type internal combustion multiple unit train power supply system. The power concentrated type internal combustion multiple unit train power supply system comprises a main mission train and a reconnection train connected with the main mission train in a transmission mode; the main mission train is internally provided with a single-winding alternating current auxiliary electric generator, an auxiliary alternating current controller, a rectifier module and a power supply inverter for controlling power supply of the multiple unit trains; the alternatingcurrent auxiliary electric generator, the auxiliary alternating current controller and the power supply inverter are respectively connected with the rectifier module; the power supply inverter is connected with the auxiliary alternating current controller; the auxiliary alternating current controller is connected with a locomotive microcomputer control device; and the auxiliary alternating current controller connected with the locomotive microcomputer control device is arranged in the reconnection train. The power concentrated type internal combustion multiple unit train power supply system has the beneficial effects that compared with an independent diesel engine power supply set which needs to be termly maintained and needs the cost for replacing parts in the service lift of locomotiveoperation, the cost is more saved relatively through the alternating current auxiliary transmission system with train power supply under the premise of coequally meeting the power supply function of the trains.

Application Domain

IC reciprocating piston engine transmission

Technology Topic

Image

  • Power concentrated type internal combustion multiple unit train power supply system
  • Power concentrated type internal combustion multiple unit train power supply system

Examples

  • Experimental program(1)

Example Embodiment

[0018] Example 1:
[0019] In this embodiment, a power-centralized internal combustion EMU train power supply system includes a lead train and a multi-connected car connected to the lead train; the lead train is provided with a single-winding AC auxiliary generator, The auxiliary AC controller, the rectifier module, and the power supply inverter for controlling the power supply of the EMU train; the AC auxiliary generator, the auxiliary AC controller and the power supply inverter are respectively connected to the rectifier module; the power supply inverter The auxiliary vehicle controller is connected to the auxiliary vehicle controller; the auxiliary vehicle controller is connected to the microcomputer control device of the locomotive; and the auxiliary vehicle controller connected to the locomotive microcomputer control device is arranged in the multiplexed car. The locomotive microcomputer control device is electrically connected with a diesel engine, and the diesel engine is drivingly connected with an AC auxiliary generator.
[0020] A single-winding AC auxiliary generator is used to provide the power source for the train power supply system of the EMU. When the AC auxiliary generator is designed, the voltage characteristics of the AC auxiliary generator can generate a voltage that meets the power supply requirements of the EMU train at a diesel engine speed of 1250 rpm. , Its capacity can also meet the capacity requirements of AC auxiliary drive system and EMU train power supply, and can reduce locomotive fuel consumption.
[0021] And the single winding motor has a simple structure. The output voltage of the generator can be controlled by controlling the magnitude of the excitation current. A dual-winding motor has only one excitation winding. When a certain winding load changes greatly, it is impossible to perform closed-loop control of the voltage of each generator winding.
[0022] When the train is powered by the "auxiliary traffic controller", it transmits a "power supply signal" signal to the "locomotive microcomputer control device". After receiving the signal, the "locomotive microcomputer control device" controls the diesel engine speed to meet the train's power supply requirements. In this way, the diesel engine speed of the locomotive can meet the power supply demand of the train at a lower speed, thereby reducing the fuel consumption of the locomotive.
[0023] The "auxiliary traffic controller" and "power supply inverter" monitor the various parameters of the train power supply system to ensure the safety of the power supply of the EMU train. The inverter itself has the functions of collecting voltage, current, frequency, etc., and at the same time sending parameters to the auxiliary AC controller. The auxiliary AC controller has an analog quantity acquisition channel to collect the voltage and speed of the AC auxiliary generator. In this way, the purpose of monitoring various parameters of the train power supply system is realized.
[0024] The "power supply inverter" outputs 415V, 50Hz power according to the power supply signal sent by the "inverter controller" to meet the train's power supply requirements. The inverter controller is installed inside the inverter, and the power supply inverter, cooling fan inverter, and traction fan inverter have inverter controllers inside.
[0025] The "power supply inverter" performs closed-loop regulation by monitoring the mains voltage of the power supply to ensure that the voltage of the power supply system is always stable at 415V, 50Hz under different load changes. The function of the inverter itself can adjust the supply voltage and frequency. The output of the inverter is a PWM wave, and the voltage can be adjusted by adjusting the duty cycle to achieve the purpose of voltage stabilization. The specific adjustment method is the common knowledge and common methods of those skilled in the art, and the adjustment method is not an improvement point of this solution, and the specific method and working principle of the adjustment method are not described here.
[0026] The locomotive microcomputer control device is electrically connected with a driver console, and the driver console is electrically connected with the auxiliary traffic controller one by one. The driver, according to needs, instructs the power supply of the EMU train through the "driver's console" of the main service car, and the "auxiliary traffic controller" of the main service car and the multiple-connected car controls the own car to perform the EMU train after receiving the corresponding instructions. Power supply and stop, realize the power supply of the main train of the EMU or the train of the multiple train. The auxiliary AC controller mainly controls the excitation current of the AC auxiliary generator and adjusts the voltage of the AC auxiliary generator according to the speed of the diesel engine to achieve the purpose of controlling power supply.
[0027] The said locomotive microcomputer control device is electrically connected with a display. The display is mainly used to display the status parameters of the locomotive, including the speed of the locomotive, the working condition of the locomotive, the direction of the locomotive, and the speed of the diesel engine. It can also display the voltage and frequency of the AC auxiliary generator, the motor speed, current, voltage of the traction fan, and the cooling fan motor speed, current, voltage and other data.
[0028] The rectifier module is connected with a traction fan inverter for controlling a traction fan and a cooling fan inverter for controlling a cooling fan; the traction fan inverter and the cooling fan inverter are respectively connected to the auxiliary AC controller connection.
[0029] "Traction fan inverter" outputs 0~500V, 0~87.4Hz electricity according to the current of the traction motor to control the speed of the traction motor fan to ensure the heat dissipation of the traction motor.
[0030] "Cooling fan inverter" outputs 0~500V, 0~87.4Hz circuit according to the diesel engine cooling water temperature to control the diesel engine cooling fan speed to ensure the heat dissipation of the diesel engine.
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