Auxiliary power supply device for EMU
A technology for auxiliary power supply and EMU, which is applied to circuit devices, power supply of auxiliary motors, motor vehicles, etc., and can solve problems such as failure of auxiliary power supply system, failure of train traction, air conditioners and air compressors, and train withdrawal from service.
Active Publication Date: 2019-03-05
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology
[0005] However, when the three-phase bus ground fault occurs during the operation of the train, it will cause the auxiliary power supply system to fail, so that the train traction, air conditioner and air compressor cannot work normally, and the train will be out of service
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[0035] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0036] The auxiliary power supply device for EMUs provided by the present invention includes: a three-phase isolation contactor, a first-unit AC relay, a second-unit AC relay, a first-unit control circuit, a second-unit control circuit, a first-unit power supply circuit, and a second-unit power supply circuit. unit power supply circuit;
[0...
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A motor train unit auxiliary power supply apparatus. A normally open three-phase isolation contactor main contact is connected in series between a first unit three-phase four-wire system bus bar and a second unit three-phase four-wire system bus bar. A coil of the three-phase isolation contactor is connected in series between a first unit power supply circuit and a second unit power supply circuit. Two ends of a coil of a first unit alternating current relay are respectively connected to a one-phase bus bar (U101, V101, W101) and a neutral conductor (N100) of the first unit. Two ends of a coil of a second unit alternating current relay are respectively connected to a one-phase bus bar (U101A, V101A, W101A) and a neutral conductor (N100A) of the second unit. When the first unit three-phase four-wire system bus bar supplies power, the first unit control circuit controls the first unit power supply circuit to be powered on, the coil of the three-phase isolation contactor to get power, and the normally open three-phase isolation contactor main contact to be closed. When the second unit three-phase four-wire system bus bar supplies power, the second unit control circuit controls the second unit power supply circuit to be powered on, the coil of the three-phase isolation contactor to get power, and the normally open three-phase isolation contactor main contact to be closed. Any unit in the apparatus supplies power, and the three-phase isolation contactor is closed to realize power supply for the whole train.
Description
technical field [0001] The invention relates to the technical field of power supply for trains, in particular to an auxiliary power supply device for an EMU. Background technique [0002] The Chinese standard EMU train consists of eight carriages, of which the No. 1-4 carriages are the first unit, and the No. 5-8 carriages are the second unit. There is a driver's cab at each end of the train. However, when the train is running, only one cab can be activated, that is, the cab of the first unit is activated to control the running of the train, or the cab of the second unit is activated to control the running of the train. [0003] For example, after the driver's cab of the first unit is occupied, the train is operated by the driver's cab of the first unit. The driver operates the pantograph to raise the bow to contact with the catenary, and the catenary supplies power to the train. [0004] In addition to supplying power to the train by the catenary, the EMU also needs to s...
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IPC IPC(8): H02J9/00H02J9/06
CPCH02J9/00H02J9/061H02J3/0073H02J3/04H02J9/06B60L1/003B60L2200/26H02J9/068
Inventor 周建升焦京海于延尊牛步钊姜付杰吴冬华
Owner CRRC QINGDAO SIFANG CO LTD