发明名称 |
Rotor angle estimation for permanent magnet synchronous motor drive |
摘要 |
A method of determining a rotor angle in a drive control for a motor, comprising the steps of (a) determining a rotor magnetic flux in the motor; (b) estimating the rotor angle on the basis of the rotor magnetic flux; and (c) correcting the estimated rotor angle on the basis of reactive power input to the motor. Step (a) may include the step of non-ideal integration of stator voltage and current values. Step (b) may include the step of correcting phase errors caused by said non-ideal integration via a PLL circuit with phase compensation (F). Step (c) may include the steps of (1) calculating a first reactive power input value as 1.5*We*(C_Lq*I*I) and a second reactive power input value as 1.5*(Vq*id-Vd*iq); (2) determining a difference between said first and second reactive power input values; and (3) applying said difference to the rotor angle estimated in step (b) to obtain a corrected rotor angle.
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申请公布号 |
US7299708(B2) |
申请公布日期 |
2007.11.27 |
申请号 |
US20040967596 |
申请日期 |
2004.10.18 |
申请人 |
INTERNATIONAL RECTIFIER CORPORATION |
发明人 |
HO EDDY YING YIN |
分类号 |
G01L3/02;H02P21/00;H02P6/08;H02P6/18;H02P27/04 |
主分类号 |
G01L3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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