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Effect of transition duration of ZVT on reduction of DC-bus utilization in ZVS converters
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| Author(s) |
A. Radan |
| Abstract |
The "Per Switching Cycle Volt-Second Balance" of Space Vector Modulation (SVM) is disturbed by
the duration of polarity variation of phase voltages becoming longer in soft switching converters. The
phase voltages of a ZVS converter vary during the zero voltage transition in a sinus fashion. This
causes the converter not to generate the voltage vector requested by the SVM modulator. This effect
results in a reduction in the DC-Bus utilization of soft switching converters compared to their hard
switching counterpart. This paper investigates this object analytically and shows the reduction of the
DC-Bus utilization for two common types of ZVS converters by simulation results. This paper also
proposes a method for compensating the reduction of DC-Bus Utilization. The effectiveness of the
proposed method is also confirmed by simulation results. |
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| Filename: | EPE2003-PP0249 - Radan |
| Filesize: | 760.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-02-04 by Unknown |
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