Light rail vehicle auxiliary inverse power supply parallel device and control method thereof

An auxiliary inverter and control method technology, applied in the direction of current collectors, electric vehicles, electric energy management, etc., can solve the problems of reducing the reliability of power supply, affecting the normal use of loads such as air conditioners and lighting, and limiting the life of mechanical switches, etc., to achieve reliable Performance improvement, overcoming the effect of slow contactor switching speed

Inactive Publication Date: 2008-09-10
BEIJING JIAOTONG UNIV +1
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Problems solved by technology

[0003] However, the above-mentioned existing rail transit auxiliary power supply system has the following disadvantages. The contactor belongs to a mechanical device. The life of the switch is limited, which reduces the reliability of power supply, which in turn affects the normal use of loads such as air conditioners and lighting on the car

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  • Light rail vehicle auxiliary inverse power supply parallel device and control method thereof

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Embodiment Construction

[0011] The structure of the light rail vehicle auxiliary inverter power parallel connection device will be firstly described below.

[0012] The invention consists of two sets of auxiliary inverter power supplies connected in parallel. Each auxiliary inverter power supply is composed of auxiliary inverters, control circuits, and peripheral circuits for signal detection and conversion, and converts DC power into AC power to supply power to loads. The control chip can adopt a digital signal processing chip (DSP), a single-chip microcomputer and a complex programmable logic device (CPLD). The peripheral circuit can adopt the circulating current detection and processing circuit disclosed in the document "SPWM Inverter Control Technology Research" (102870305-0081). The AC output side of two sets of the same auxiliary inverter power supply is directly connected by wires for parallel operation. This method of realizing parallel connection replaces the method of parallel connection of...

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Abstract

The invention discloses a parallel device for auxiliary inverter supply of a light rail vehicle and a control method. The device can unceasingly and reliably provide electricity to the light rail vehicle; two sets of auxiliary inverter supplies connected in parallel can be directly connected in parallel through wires. The method for realizing the parallel connection replaces the original method in which the auxiliary inverter supplies of the traditional light rail vehicle are connected in parallel through a contactor to supply the electricity to the load. When one of the auxiliary inverter supplies malfunctions, a control circuit blocks the drive pulse of the malfunctioned auxiliary inverter supply and stops the operation of the malfunctioned auxiliary inverter supply according to programmed controlling information beforehand, however, the load can be still electrified by the normal auxiliary inverter supply, thus realizing the unceasing power supply and enhancing the reliability of the whole system.

Description

technical field [0001] The invention relates to an auxiliary power supply for rail transit, which is suitable for power supply of AC loads such as air conditioners, lighting, and heating on board. Background technique [0002] Auxiliary power supply systems for rail transit often require inverter devices that convert DC power into AC power, which are directly used to power AC loads such as air conditioners, lighting, and heating on vehicles. Usually, the structure of existing auxiliary power supply systems for rail transit is such as MEE600-25T China As disclosed in the technical specification of the "25T" speed-up car project, the AC output side of the two sets of auxiliary inverter power devices connected in parallel is connected through a contactor for parallel operation. Under normal working conditions, the two sets of auxiliary inverter power devices connected in parallel The devices supply power to their respective loads respectively, and the contactor is in the discon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L1/00H02J3/38
CPCY02T10/72
Inventor 刘志刚刁利军李哲峰林文立赵明花卢西伟狄威贾利民牟富强沈茂盛张钢王磊梅樱罗荣娅
Owner BEIJING JIAOTONG UNIV
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