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Title:
A CONTROL SYSTEM FOR A BRUSHLESS DC MOTOR AND A CONTROL METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2008/089591
Kind Code:
A1
Abstract:
By a control system and a control method for a brushless DC motor and an inverter module thereof, it will be realized that a squarewave brushless DC magnetoelectric machine can be controlled in the form of current closed-loop. The cathodes of diodes (D1, D3, D5) in the upper section of the inverter are not connected with the inputs of corresponding transistors and are connected in parallel with each other to a sampling coil (L2), and/or the anodes of diodes (D4, D6, D2) in the lower section are not connected with the outputs of corresponding transistors and are connected in parallel with each other to another sampling coil (L3). Single composite current sensor can be adopted in the control system so as to sample the three-phase current wholly and continuously when the motor is conducting or freewheeling, and the three-phase current can be controlled continuously in the form of closed-loop by single current closed-loop regulator.

Inventors:
LI, Tiecai (A803, Building Shenzhen Tech-Innovation InternationalRoad Tech-South,10, Nansha, Shenzhen Guangdong 7, 518057, CN)
李铁才 (中国广东省深圳市南山科技园深圳国际技术创新研究院A803室, Guangdong 7, 518057, CN)
ZHOU, Zhaoyong (A803, Building Shenzhen Tech-Innovation InternationalRoad Tech-South,10, Nansha, Shenzhen Guangdong 7, 518057, CN)
周兆勇 (中国广东省深圳市南山科技园深圳国际技术创新研究院A803室, Guangdong 7, 518057, CN)
QI, Yamei (A803, Building Shenzhen Tech-Innovation InternationalRoad Tech-South,10, Nansha, Shenzhen Guangdong 7, 518057, CN)
漆亚梅 (中国广东省深圳市南山科技园深圳国际技术创新研究院A803室, Guangdong 7, 518057, CN)
Application Number:
CN2007/000178
Publication Date:
July 31, 2008
Filing Date:
January 18, 2007
Export Citation:
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Assignee:
SHENZHEN TECH-INNOVATION INTERNATIONAL (A803, Building Shenzhen Tech-Innovation InternationalRoad Tech-South,10, Nansha, Shenzhen Guangdong 7, 518057, CN)
深圳国际技术创新研究院 (中国广东省深圳市南山科技园深圳国际技术创新研究院A803室, Guangdong 7, 518057, CN)
LI, Tiecai (A803, Building Shenzhen Tech-Innovation InternationalRoad Tech-South,10, Nansha, Shenzhen Guangdong 7, 518057, CN)
李铁才 (中国广东省深圳市南山科技园深圳国际技术创新研究院A803室, Guangdong 7, 518057, CN)
ZHOU, Zhaoyong (A803, Building Shenzhen Tech-Innovation InternationalRoad Tech-South,10, Nansha, Shenzhen Guangdong 7, 518057, CN)
周兆勇 (中国广东省深圳市南山科技园深圳国际技术创新研究院A803室, Guangdong 7, 518057, CN)
QI, Yamei (A803, Building Shenzhen Tech-Innovation InternationalRoad Tech-South,10, Nansha, Shenzhen Guangdong 7, 518057, CN)
International Classes:
H02P7/28; H02M7/00
Foreign References:
JPH04334995A
JPS57160387A
EP0075357A1
JPH11332278A
US5615102A
US6590794B1
FR2654877A1
CN1801596A
CN1065562A
Attorney, Agent or Firm:
SHENZHEN STANDARD PATENT & TRADEMARK AGENT LTD. (Room 810-815, Yinzuo Int'l BuildingNo. 1056, Shennan Boulevar, Shenzhen Guangdong 0, 518040, CN)
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