Frequency & duty cycle control considerations for soft-switching buck chopper
نویسندگان
چکیده
This paper presents considerations on the switching frequency and duty cycle & operating equations of softswitching BUCK chopper. These considerations are discussed and applied to selected soft-switching families such as ZVS-QRC, ZCS-QRC, ZVS-QSW-CV, ZCS-QSWCC, ZVT-PWM and ZCT-PWM [1]. The limitations on switching frequency and duty cycle are derived in terms of: chopper input voltage (Vg), chopper output current (IF), Resonant elements values including (Cr, Lr), Voltage and current of filter capacitor and reactor or initial values of capacitor and reactor respectively (V1, I1).
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