发明名称 |
Adaptive DC-link voltage controlled LC coupling hybrid active power filters for reactive power compensation |
摘要 |
An adaptive dc-link voltage controlled LC coupling hybrid active power filter (LC-HAPF) for reactive power compensation includes: two dc capacitors to provide dc-link voltage; a three-phase voltage source inverter to convert dc-link voltage into compensating voltages; three coupling LC circuits to convert compensating voltages into currents; and an adaptive dc voltage controller with reactive power compensation control algorithm. The control algorithm includes: first, calculating required minimum dc-link voltage in each phase with respect to loading reactive power; three-phase required minimum dc-link voltage will be maximum one among their minimum values; compare it with predetermined voltage levels to determine final reference dc-link voltage. A dc-link voltage feedback P/PI controller outputs dc voltage reference compensating currents. An instantaneous power compensation controller outputs reactive reference compensating currents. The final reference compensating currents will be sum of them. A PWM circuit provides LC-HAPF adaptive dc-link voltage control and dynamic reactive power compensation. |
申请公布号 |
US2014055104(A1) |
申请公布日期 |
2014.02.27 |
申请号 |
US201213591266 |
申请日期 |
2012.08.22 |
申请人 |
LAM CHI-SENG;WONG MAN-CHUNG;CHOI WAI-HEI;HAN YING-DUO;UNIVERSITY OF MACAU |
发明人 |
LAM CHI-SENG;WONG MAN-CHUNG;CHOI WAI-HEI;HAN YING-DUO |
分类号 |
G05F1/70 |
主分类号 |
G05F1/70 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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