Title:
INTERIOR COMPOSITE MAGNETIC MATERIAL FAULT-TOLERANT TUBULAR LINEAR MOTOR, AND SHORT-CIRCUIT FAULT-TOLERANT VECTOR CONTROL METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/063242
Kind Code:
A1
Abstract:
An interior composite magnetic material fault-tolerant tubular linear motor, and short-circuit fault-tolerant vector control method thereof. The method comprises: establishing a five-phase interior composite magnetic material fault-tolerant tubular linear motor model; using a non-failure phase current of the motor to perform compensation for a short-circuit failure phase resulting in a normal thrust deficiency in the phase, and to suppress thrust fluctuation; and obtaining, by employing a series of coordinate transformations and voltage feed forward compensation policies, a desired phase voltage, and employing a CPWM modulation method based on zero-sequence voltage harmonic injection to realize fault-tolerant vector control after a phase short-circuit failure of the motor. The method can suppress motor thrust fluctuation when the motor is in phase short-circuit fault-tolerant operation, and more importantly, the method has the advantages of dynamic state and steady state performances consistent with those in a normal state, a constant switching frequency of a voltage source inverter, and a small CPU overhead. Moreover, upon a short-circuit failure of any phase, the natural coordinate system only has to be rotated counterclockwise by a certain angle to realize fault-tolerant operation of the motor.
Inventors:
ZHOU HUAWEI (CN)
LU ZHEN (CN)
JI JINGHUA (CN)
ZHU XIAOYONG (CN)
ZHAO WENXIANG (CN)
LIU GUOHAI (CN)
CHEN LONG (CN)
CHEN QIAN (CN)
LU ZHEN (CN)
JI JINGHUA (CN)
ZHU XIAOYONG (CN)
ZHAO WENXIANG (CN)
LIU GUOHAI (CN)
CHEN LONG (CN)
CHEN QIAN (CN)
Application Number:
PCT/CN2015/094171
Publication Date:
April 20, 2017
Filing Date:
November 10, 2015
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
H02K41/03; H02P25/06
Foreign References:
| CN104767353A | 2015-07-08 | |||
| CN103779991A | 2014-05-07 | |||
| CN104682807A | 2015-06-03 | |||
| CN104052234A | 2014-09-17 | |||
| US20120242173A1 | 2012-09-27 | |||
| CN104682820A | 2015-06-03 |
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
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