Abstract
The paper proposes a novel interleaved AC-DC ZCS-PWM boost converter that requires the use of just a single active auxiliary switch to assist in the turning off the main power circuit switches with ZCS. The auxiliary switch can be turned on and off with ZCS and its auxiliary circuit allows the converter to operate without an increase in the main switch peak current or voltage stress. The auxiliary switch in the converter is active for a much shorter time than in most other ZCS-PWM converter, which allows the converter to operate at higher power levels than other previously proposed interleaved ZCS-PWM converter with a single auxiliary switch. The proposed converter's operation is explained in the paper and its key features and design considerations are discussed. Experimental results that confirm the operation of the proposed converter are presented as well.
Highlights
AC-DC boost converters with input power factor correction (PFC) are widely used in industry as their input current can meet harmonic standards set by regulatory agencies [1,2,3,4,5,6]
Soft-switching methods for these converters can either be zero-voltage switching (ZVS) if they are implemented with MOSFETs or zero-current switching (ZCS) if implemented with IGBTs
It has nothing to do with the proposed auxiliary circuit and can be found in any boost converter operating with a discontinuous input current
Summary
AC-DC boost converters with input power factor correction (PFC) are widely used in industry as their input current can meet harmonic standards set by regulatory agencies [1,2,3,4,5,6]. Popular are AC-DC PFC converters that are made up of at least two interleaved boost converter modules, such as the ones proposed in [7,8,9,10,11,12,13,14,15,16]. The input current of each module can be made to be discontinuous so that the size of their input inductors are reduced as the net input current has a ripple that is comparable to that of a single boost converter module with a large input inductor. ZCS is beneficial for IGBTs as it eliminates the current tail that would otherwise exist when turning off. This current tail overlaps with the switch voltage and causes significant turn-off losses
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
