An optimal PWM rectifier-inverter structure for near unity PF operation
In this work, a 12-pulse bridge topology is introduced to current source and voltage source PWM rectifier. After combining PWM-SHE switching patterns, the switching frequency of every switch is significantly reduced, comparing with corresponding 6-pulse topology. During derivation of the PWM-SHE swi...
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| 格式: | Theses and Dissertations |
| 出版: |
2008
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| 在線閱讀: | http://hdl.handle.net/10356/3237 |
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| 機構: | Nanyang Technological University |
| 總結: | In this work, a 12-pulse bridge topology is introduced to current source and voltage source PWM rectifier. After combining PWM-SHE switching patterns, the switching frequency of every switch is significantly reduced, comparing with corresponding 6-pulse topology. During derivation of the PWM-SHE switching pattern proposed in this work, Genetic Algorithm (GA) concept is developed to “pre-calculate” the nonlinear equations governing the switching angles. |
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