Title:
CONTROL METHOD OF ELECTROMOTOR
Document Type and Number:
WIPO Patent Application WO/2008/052388
Kind Code:
A1
Abstract:
A control method of electromotor comprises the following steps: setting an alternating axis target current according to the rotor angle velocity of the motor and setting a direct axis target current according to the torque of the motor; detecting and collecting the three-phase currents of the electromotor, simultaneously detecting the degree of the electromotor rotor position; converting the three-phase currents of the electromotor to an alternating axis actual current and a direct axis actual current by Park conversion and Clark conversion according to the degree of the rotor position; setting the difference between the target current and the actual current as the input of the current loop, outputting the required direct axis current and the required alternating axis current by PI regulation; calculating the three-phase voltage according to the required direct axis current and the required alternating axis current output by PI regulation and the degree of the electromotor rotor position; obtaining PWM control waveform through three-phase voltage, the said PWM control waveform controlling the conversion from the direct current to the alternating current, the converted alternating current driving the electromotor.
Inventors:
TANG XIAOHUA (CN)
ZHOU XUGUANG (CN)
LUO HONGBIN (CN)
YU MING (CN)
LIU NAN (CN)
GONG JIAN (CN)
YANG GUANGMING (CN)
ZHOU XUGUANG (CN)
LUO HONGBIN (CN)
YU MING (CN)
LIU NAN (CN)
GONG JIAN (CN)
YANG GUANGMING (CN)
Application Number:
PCT/CN2006/002916
Publication Date:
May 08, 2008
Filing Date:
October 31, 2006
Export Citation:
Assignee:
BYD CO LTD (CN)
TANG XIAOHUA (CN)
ZHOU XUGUANG (CN)
LUO HONGBIN (CN)
YU MING (CN)
LIU NAN (CN)
GONG JIAN (CN)
YANG GUANGMING (CN)
TANG XIAOHUA (CN)
ZHOU XUGUANG (CN)
LUO HONGBIN (CN)
YU MING (CN)
LIU NAN (CN)
GONG JIAN (CN)
YANG GUANGMING (CN)
International Classes:
G05D13/66; H02P3/18; H02P23/14; H02P27/08
Foreign References:
| CN1515068A | 2004-07-21 | |||
| JPH07327382A | 1995-12-12 | |||
| DE4321286A1 | 1994-01-05 |
Other References:
WANG H. ET AL.: "Speed-adjustment System of Permanent Magnet Synchronous Generator", SMALL & SPECIAL MACHINES, no. 9, 2004, pages 9 - 11, XP008105602
Attorney, Agent or Firm:
RUNPING & PARTNERS (Yingu MansionNo. 9Beisihuanxil, Haidian District 0 Beijing, CN)
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