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Robust Current Regulator with 2 DOF Structure and Stability Analysis for IPMSM Drives under High Speed Region
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| Author(s) |
Masaru Hasegawa, Yasuhiro Nitta, Keiju Matsui |
| Abstract |
This paper proposes a new current regulator
for IPMSM sensorless drives under high speed region. It
has been pointed out that the conventional current control
system for IPMSM becomes unstable under high speed
region, which caused by position estimation error. First,
this paper shows that this phenomenon is caused by position
estimation error, and this instability is especially emphasized
under high speed region. To overcome this instability, two
degrees of freedom (2 DOF) controller is proposed in this
paper. Stability using the proposed current regulator is
then analyzed theoretically, and the proposed controller
can enlarge stable region of position sensorless control
for IPMSM drives, which can conclude that the proposed
controller is superior to that using conventional one. |
| Download |
| Filename: | T5-121.pdf |
| Filesize: | 246.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-13 by System |
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