Power supply system and power supply control method

A power supply system and controller technology, which is applied in the direction of electrical components, output power conversion devices, AC power input conversion to DC power output, etc., can solve problems such as easy circulation, power supply system collapse, power supply system loss, etc.

Pending Publication Date: 2018-10-16
CRRC XIAN YONGEJIETONG ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, during the parallel operation of multiple inverters, it is usually difficult to achieve current sharing between different inverters, and circulating currents are prone to o

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  • Power supply system and power supply control method

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Embodiment Construction

[0060] The power supply system provided by the following embodiments of the present invention can be applied to a train power supply system for supplying power to load equipment on the train. The load equipment on the train may include: air conditioning, lighting, ventilation equipment, etc.

[0061] The following description will be given in conjunction with multiple examples. figure 1 It is a schematic structural diagram of a power supply system provided by the present invention. Such as figure 1 As shown, the power supply system includes: multiple inverters 1 , multiple controllers 4 , multiple current sensors 2 and voltage sensors 3 .

[0062] The input terminals 5 of multiple inverters 1 are connected to the same power input terminal; the output terminal 6 of each inverter 1 is connected to a current sensor 2, and a current sensor 2 is connected to a controller 4;

[0063] Specifically, the power input terminal 5 is connected to a DC power supply. The inverter 1 can c...

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Abstract

The invention provides a power supply system and a power supply control method. The power supply system comprises a plurality of inverters, a plurality of controllers, a plurality of current sensors and a voltage sensor, wherein input ends of the plurality of inverters are connected to a same power supply input end; an output end of each inverter is connected with one current sensor; one current sensor is connected with one controller; the output ends of the plurality of inverters are connected with the same voltage sensor; the voltage sensor is also connected with the plurality of controllers; and one controller is also connected with a control terminal of one inverter and also connected with the other controllers in the plurality of controllers to receive current which is transmitted from the other controllers and detected by the current sensors connected with the other controllers. According to the power supply system and the power supply control method, the inverters connected withthe controllers are controlled and adjusted through the controllers to achieve uniform current among different inverters, so that circulating current is avoided, interruption of power supply is effectively avoided and normal operation of a vehicle is ensured.

Description

technical field [0001] The invention relates to the technical field of power supply, in particular to a power supply system and a power supply control method. Background technique [0002] The inverter is the most critical device in the auxiliary power supply of subways and light rails. It is used to convert DC power into AC power to supply power to auxiliary equipment such as air conditioning units, ventilation devices, and lighting devices on vehicles. [0003] At present, the auxiliary system of the whole vehicle can usually be supplied with centralized power through an inverter. If the inverter is damaged, it will directly affect the normal operation of the auxiliary equipment on the vehicle, thereby affecting the stable operation and comfort of the vehicle. In order to solve this problem, multiple inverters can be used to operate in parallel to supply power. When one auxiliary inverter fails, the other inverters can still operate normally and continue to supply power to...

Claims

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Application Information

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IPC IPC(8): H02M7/493H02M7/5387
CPCH02M7/493H02M7/5387
Inventor 高闯杨伟岳文开相里燕妮高波李航
Owner CRRC XIAN YONGEJIETONG ELECTRIC CO LTD
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