A method for suppressing the transformer bias magnetic field of a guide rail vehicle phase-shifting full-bridge charger

A phase-shifting full-bridge and transformer technology, which is applied in the field of guide rail vehicles, can solve problems affecting control performance and high-frequency transformer bias, and achieve the effects of suppressing bias, improving system stability, and improving dynamic performance and steady-state performance
CN108777545BActive Publication Date: 2021-02-02XIAN YONGDIAN ELECTRIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN YONGDIAN ELECTRIC
Publication Date
2021-02-02

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Abstract

The invention discloses a transformer bias suppression control method for a phase-shifting full-bridge charger of a guide rail car: on the basis of the conventional phase-shifting full-bridge voltage and current loop control, a transformer bias correction link is added, and the primary side current of the transformer is used as the bias current. Magnetic correction loop feedback. By using the transformer bias correction control loop control of the present invention, the phase shift angles of T1 and T4 phase shift angles and T2 and T3 phase shift angles are not completely symmetrical, but according to the maximum value of the forward current of the primary side of the transformer and the reverse The maximum current is adjusted separately. While suppressing the transformer bias, it also improves the rapidity and robustness of the control system. And passed the practical application verification, the control method has broad industrial application prospects.
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Description

technical field

[0001] The invention belongs to the technical field of guide rail cars, and relates to a method for suppressing magnetic bias, in particular to a method for suppressing magnetic bias of a transformer of a phase-shifting full-bridge charger for a guide rail car. Background technique

[0002] With the great-leap-forward development of China's railway technology, as well as the enhancement of China's comprehensive national strength and the improvement of people's living standards, the requirements for the environment and comfort are getting higher and higher. The advantages of large passenger volume, flexibility and convenience have become the research object of many OEMs. The whole vehicle design of light rail vehicles tends to adopt the design principles of light weight and miniaturization more and more, and the requirements for the DC power supply unit of guide rail vehicles are also the same, so the performance index of the DC power supply of the train, the ...

Claims

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