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Sensorless Control of Interior Permanent Magnet Machine at Standstill and Low Speed
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| Author(s) |
Feng Zhao, Xuhui Wen, Shan Xue, Jinwen Gao |
| Abstract |
The model of the interior permanent magnet
synchronous machine (IPMSM) is transformed to a novel
format, which can be treated as a surface permanent
magnet synchronous machine (SPMSM). Based on the new
form, novel methods for position estimation during
standstill and low speed are presented for IPMSM drives.
Carrier-Signal-injection is used; persistent, rotating current
vector is injected into the plant. Novel carrier frequency
image tracking techniques base on the Model Reference
Adaptive Method are used, taking over filter method, to
demodulate the position signal from high frequent current
signals. This scheme can identify and track the orientation
of the north pole of d or q axes quickly and accurately even
when the rotor is at low speed and standstill, in spite of the
speed is known and unknown. Simulation results show that
the proposed algorithms are capable of reliable and fast
initial position estimation at standstill and low speed. |
| Download |
| Filename: | T7-404.pdf |
| Filesize: | 263.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2007-03-08 by System |
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