Small-signal analysis of a soft-switching, single-stage two-switch AC-to-DC converter

Small-signal analysis of a two-switch single-stage AC-to-DC converter is presented using the state averaging technique. Frequency responses of control-to-output and line-to-output transfer functions are obtained and they are verified by PSPICE simulation. Based on the analysis, the feedback compensation network is designed for a 500 W, 48 V output prototype converter.

[1]  A.K.S. Bhat,et al.  A soft-switching single-stage AC-to-DC converter with low harmonic distortion-analysis, design, simulation and experimental results , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[2]  K.-H. Liu,et al.  Current waveform distortion in power factor correction circuits employing discontinuous-mode boost converters , 1989, 20th Annual IEEE Power Electronics Specialists Conference.

[3]  R. Redl,et al.  RMS, DC, peak, and harmonic currents in high-frequency power-factor correctors with capacitive energy storage , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

[4]  M. Kheraluwala,et al.  Characteristics of load resonant converters operated in a high power factor mode , 1991, [Proceedings] APEC '91: Sixth Annual Applied Power Electronics Conference and Exhibition.

[5]  R. Redl.  A new soft-switching DC/DC converter and its application in an off-line power supply with integral high-quality rectification , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[6]  Esam H. Ismail,et al.  Integrated high quality rectifier-regulators , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.