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Control method, control device and system of permanent magnet synchronous motor system

A permanent magnet synchronous motor and control device technology, applied in emergency protection circuit devices, power management, electric vehicles, etc., can solve the problems of electric vehicle vibration and jitter, etc.

Pending Publication Date: 2022-06-03
XPT NANJING E POWERTRAIN TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

However, the existing method will enter the active short-circuit control mode at high speeds, but once the active short-circuit control mode is entered, unless the electric vehicle is powered off and restarted and the fault is repaired, it cannot exit the active short-circuit control mode, thus causing electric vehicles Severe vibration and vibration at low speed

Method used

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  • Control method, control device and system of permanent magnet synchronous motor system
  • Control method, control device and system of permanent magnet synchronous motor system
  • Control method, control device and system of permanent magnet synchronous motor system

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Embodiment Construction

[0035] Certain terms are used in the specification and subsequent claims to refer to specific elements. It should be understood by those skilled in the art that hardware manufacturers may refer to the same element by different nouns. The scope of this specification and subsequent patent applications does not use the difference in name as a way to distinguish elements, but uses the difference in function of the elements as a criterion for distinguishing. The "including" mentioned in the entire specification and the subsequent scope of the patent application is an open-ended term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described herein that the first device is coupled to the second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second de...

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PUM

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Abstract

The invention discloses a control method, a control device and a system of a permanent magnet synchronous motor system. The control method comprises the following steps: judging whether a fault event occurs in the motor system or not; when the motor system is judged to have the fault event, a mode enabling signal is generated to control the motor system to enter an active short circuit control mode; and receiving a speed signal including vehicle speed information, and controlling the motor system to operate in an active short circuit control mode or a shutdown control mode according to the mode enabling signal and the vehicle speed.

Description

technical field [0001] The present invention relates to a control method, control device and system of a permanent magnet synchronous motor system, in particular to a control method and control device of a motor system based on a novel safety state control strategy of a permanent magnet synchronous motor system of an electric vehicle. Background technique [0002] The technology of electric vehicles is becoming more and more mature. At present, in order to pursue excellent cruising range in the power system of electric vehicles, most of them use permanent magnet synchronous motor system as the power output source. However, under the premise of satisfying the functional safety design, when a serious fault event occurs in the motor system (such as chip failure, low-voltage power supply failure, level 3 failure, etc.), the motor system needs to trigger a safe state active short circuit (ASC) through hardware. control mode. In the prior art, after the hardware triggers the acti...

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Application Information

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IPC IPC(8): H02H7/085H02H7/09
CPCH02H7/085H02H7/09Y02T10/72
Inventor 邵路王张通赵艳
Owner XPT NANJING E POWERTRAIN TECH CO LTD
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