A mixed modulating method for three level high-voltage transducer |
Title： |
| A mixed modulating method for three level high-voltage transducer |
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Application Number： |
200710063247 |
Application Date： |
2007/01/05 |
Announcement Date： |
2007/08/15 |
Pub. Date： |
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Publication Number： |
101018020 |
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 7/48H02M 7/5387 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Zhang Yongchang, Zhao Zhengming, Yang Zhi, Bai Hua |
Key Words： |
mixed modulating, three level, high-voltage, transducer |
Abstract： |
The disclosed modulation technology for three-level high-voltage frequency converter comprises: to three-level NPC frequency converter, using asynchronous SVPWM when frequency less than 45Hz, and obtaining switch frequency as 600Hz using special eliminating-harmonic PWM when frequency over 45Hz, and obtaining the switch number is seven. This invention avoids defects of space-vector PWM and special eliminating-harmonic PWM, improves waveform quality, reduces heat loss and request on filter, and ensures system security and reliability. |
Claim： |
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Priority： |
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PCT： |
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