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학술저널
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전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.2 No.4
발행연도
2002.10
수록면
288 - 296 (9page)

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In this paper, a high frequency transformer - assisted auxiliary active resonant commutated snubber (HFTA-ARCS) for voltage source soft switching pulse width modulated power conversion circuits is presented A three phase voltage source type soft switching inverter incorporating HFTA-ARCS circuits in its three bridge legs can reduce current rating of auxiliary active power switches and has sensorless simplified control scheme which any specified boost current management is not required for soft switching. Its operation principle and digital control scheme are described and a practical design method of circuit parameters on tins HFTA-ARCS circuit is also introduced on the basis of computer simulation Moreover, this space voltage vector modulated soft switching inverter system with DSP-based digital control scheme is discussed and its effectiveness is proved on the basis of performance evaluations The operating performances of this inverter system are also compared with those of conventional three-phase hard switching inverter under practical conditions of specified parameters.

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ABSTRACT

1.Introduction

2.Auxiliary Resonant Snubber with high-Frequency Transformer

3.Practical Design Procedure of the Auxiliary Resonant Snubber

4.Three Phase Soft Commutation PWM Inverter and Its Control Scheme

5.Conclusions

References

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