A Full Bridge Resonant Inverter with Modified Phase Shift Modulation

A full bridge resonant inverter is proposed as one of the potential building blocks for high frequency ac distributed power supply. Because the load impedance in ac distributed power system is unknown and the input line voltage has wide range of variation, voltage feedback and feed-forward control h...

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Bibliographic Details
Published in2005 IEEE 36th Power Electronics Specialists Conference pp. 642 - 649
Main Authors Ye, Z.M., Jain, P.K., Sen, P.C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Bridge circuits
Frequency
Impedance
Phase modulation
Power supplies
Power system control
Power system transients
Power systems
Resonant inverters
Voltage
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Summary:A full bridge resonant inverter is proposed as one of the potential building blocks for high frequency ac distributed power supply. Because the load impedance in ac distributed power system is unknown and the input line voltage has wide range of variation, voltage feedback and feed-forward control has to be applied to regulate the output voltage. However with the conventional phase shift modulation (PSM), the phase angle of the inverter output voltage shifts with the line and load perturbation. A modified symmetrical PSM is proposed where triangle waveform is used as carrier signal and the modulation signal is double edge modulated. With this method, the phase angle of the output voltage is independent of the line and load variation. The mechanism is described and analyzed. Performance during steady state and transient shows that the symmetrical PSM inverter is applicable to high frequency ac distributed power system
ISBN:9780780390331
0780390334
ISSN:0275-9306
2377-6617
DOI:10.1109/PESC.2005.1581694