发明名称 |
Lead-angle control method and device for operating permanent magnet synchronous motor in flux weakening regions |
摘要 |
A lead-angle control device according to the present invention includes: a space voltage vector controller calculating effective vector application times necessary for obtaining output voltage vectors of an inverter from stationary-coordinate-system instruction voltage components; a lead-angle compensator comparing the sum of the effective vector application times with a sampling period, and generating lead-angle compensation values; a speed controller generating an instruction current for compensating an error caused by a difference between an instruction speed and a current speed; an instruction current generator which generates a rotating-coordinate-system instruction current component by extracting a lead-angle component at a point where maximum torque-per-ampere can be obtained from the magnitude of the instruction current and performing a mathematical calculation on the magnitude of the instruction current and a lead-angle component; and an instruction voltage generator generating a stationary-coordinate-system instruction voltage component from the rotating-coordinate-system instruction current component. |
申请公布号 |
EP1672780(A2) |
申请公布日期 |
2006.06.21 |
申请号 |
EP20050024458 |
申请日期 |
2005.11.09 |
申请人 |
LG ELECTRONICS, INC. |
发明人 |
YANG, SOON-BAE;PARK, SUNG-MIN;KIM, TAE-WON;KIM, TAE-KYUNG |
分类号 |
H02P21/06;H02P25/02 |
主分类号 |
H02P21/06 |
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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