Mixed speed regulating method for permanent magnetic synchronous motor

A technology of permanent magnet synchronization and speed regulation method, which is used in motor generator control, electronic commutation motor control, control generator and other directions, and can solve problems such as current detection error, position detection error speed measurement error, and difficulty in guaranteeing motor speed accuracy. , to achieve the effect of eliminating errors and high speed accuracy
CN1976211AInactive Publication Date: 2007-06-06ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2007-06-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A mixed speed regulating method of permanent magnet synchronous motor includes applying self-control vector to control speed when permanent magnet synchronous motor is started up and switching said self-control of speed regulation onto separate- control of speed regulation when said motor enters steady-state and feedback rotary speed is on set speed value, outputting voltage vector of relevant frequency directly according to set speed when separate-control of speed regulation is applied and making control of speed regulation be in matching to that speed is controlled by open-loop control.
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Description

Technical field

[0001] The invention relates to a method for regulating the speed of a permanent magnet synchronous motor, in particular to a method for regulating the speed of a salient-pole permanent magnet synchronous motor which requires high speed accuracy in a steady state. Background technique

[0002] At present, automatic vector control is one of the main speed regulation methods of permanent magnet synchronous motors. The speed regulation system of this method is speed loop and current loop dual-loop regulation. The current loop has two regulators: quadrature axis current and direct axis current. (As shown in Figure 1). The adjustment steps are: speed setting n r Take the error with the speed feedback n to do speed PI (proportional integral) calculation to get the stator quadrature axis current component set value i qr , This value and the feedback quadrature axis current component i q Take the error and do the quadrature axis current PI operation to get the stator quad...

Claims

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