Control method for frequency converter DCAC of air braking system of pure electric vehicle

A pure electric vehicle, pneumatic braking technology, applied in electric braking systems, electric vehicles, vehicle components, etc., can solve the problems of inability to diagnose the DCAC fault of the inverter, unable to obtain the feedback information of the inverter DCAC, etc., and improve the reliability of the system. Improve the stability and maintainability, convenient and quick fault diagnosis, stability and scalability

CN103754117AInactive Publication Date: 2014-04-30BEIJING ZHIXING HONGYUAN AUTOMOBILE CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: BEIJING ZHIXING HONGYUAN AUTOMOBILE CO LTD
Publication Date: 2014-04-30
Estimated Expiration: Not applicable · inactive patent

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Abstract

The invention relates to a control method for a frequency converter DCAC of an air braking system of a pure electric vehicle. Fault state feedback of the frequency converter DCAC is introduced while effective control on the frequency converter DCAC of the air braking system is realized through a CAN (controller area network) communication mode, so that fault diagnosis and fault code management of the frequency converter DCAC are realized. The control method has the advantages that substantial field tests show that compared with conventional rigid-line open-loop control method, the control method based on CAN communication and state feedback has the advantages that stability and expansibility of a vehicle braking system are remarkably improved; through fault state signals, fault diagnosis of the braking system is realized conveniently and rapidly, troubleshooting of aftersales personnel is facilitated, and system reliability and maintainability are improved.

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Description

technical field

[0001] The invention relates to the technical field of electric vehicles, in particular to a DCAC control method for a frequency converter of a pneumatic brake system of a pure electric vehicle. Background technique

[0002] With the increasing shortage of international crude oil resources and the increasingly stringent requirements on vehicle emissions caused by environmental pollution, new energy vehicles have gradually become a core research and development direction of major automobile manufacturers. In the "Twelfth Five-Year Plan", the development of new energy vehicles has become a key development project of the country, which has received great attention and strong support from the country. The national high-tech research and development plan (863 plan) also focuses on new energy vehicles and related projects, fully supporting the development of new energy vehicles and related industries. Under the guidance of various preferential policies and inc...

Claims

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