Two phase PWM modulation method for reducing small common-mode voltage |
Title： |
| Two phase PWM modulation method for reducing small common-mode voltage |
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Application Number： |
200610165591 |
Application Date： |
2006/12/22 |
Announcement Date： |
2007/07/25 |
Pub. Date： |
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Publication Number： |
101005244 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H02M 7/48, H02M 7/5387, H02P 27/06, H02P 27/08 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Lu Haifeng, Qu Wenlong, Fan Yang, Cheng Xiaomeng, Zhang Xing, Wu Lixun, Jiang Shijun, Chen Jiaming, Wang Zhengyu |
Key Words： |
reduce, small common-mode voltage, two phase, PWM modulation |
Abstract： |
The invention discloses PWM modulation technical area by using inverter in three-phase voltage type to control operation of three-phase AC motor. Characters are that three adjacent effective voltage vectors are used to synthesize target vector. The said 'adjacent' means that only one action of switch device is needed to switch from any one state to other state. Comparing with traditional PWM method, the invention avoids using zero vector so as to reduce common mode voltage to 1/3 voltage of general PWM method. The invention also reduces action number of times of switch device so as to solve induced issue of switching loss and heat. |
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PCT： |
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 Relevancy information |
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| Other Patents of Same Inventor |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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