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Phase shift control for multi-phase parallel LLC voltage-fed inverter

Phase shift control for multi-phase parallel LLC voltage-fed inverter

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A novel approach to regulate and control the inverter output power by controlling the phase shift between multi-inverters, and to enhance the inverter capacity by parallel connection multi-phase LLC voltage-fed inverters, is presented. The output power equation is given and a two-phase parallel LLC voltage-fed resonant power prototype is designed and validated. The experimental results validate the proposed approach and confirm the inverter's digitisation, high-frequency and high-capacity characteristics.

References

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      • Andreas, Schonknecht, Rik W., De Doncker.: `Distributed control scheme for parallel connected soft-switching high-power high-frequency inverter', 33rdAnnual IEEE Power Electronics Specialists Conf. Cairns, 2002, Queensland, Australia, p. 1395–1400.
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