Program-controlled soft switching PRDCL inverter with new space vector PWM algorithm |
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Authors: | WAN YI HYO L LlU YONG C JUNG JUNG G CHO GYU H CHO |
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Institution: | Department of Electrical Engineering , Korea Advanced Institute of Science and Technology , (KAIST), #373–1, Kusong-dong Yusong-gu, Taejon, 305-701, South Korea |
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Abstract: | A soft switched space vector PWM inverter is developed using new parallel resonant DC-link (PRDCL). This PRDCL can operate on variable DC-link pulse position and width resulting in enhanced PWM capability, which is superior to other resonant DC-links. A new space vector algorithm is presented suitable for this PRDCL inverter. The suggested algorithm is able to eliminate narrow PWM pulses that impede DC-link operation. This PWM control, however, requires complex and precise timing sequences in relation to PRDCL operation, which is nicely solved by adopting a new programmed controller with a buffer and a programmable timer. |
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