Informatics Publishing Limited

P. Maithili ¹, C. Udhaya Shankar ², K. Malarvizhi ², Rani Thottungal ², S. Vidhya ¹

Affiliations
1 Department of Electrical and Electronics Engineering, Kumaraguru College of Technology, IN
2 Department of Electrical and Electronics Engineering, Kumaraguru College of Technology, IN

Abstract

This paper presents about a new soft switching Boost-Boost DC/DC converter using partial resonant circuit. The proposed circuit consists of conventional buck boost converter and partial resonant circuit. The switching devices in this proposed converter are operated by soft switching with a new partial resonant circuit. The partial resonant circuit consists of series connected switch-diode pair with a resonant capacitor, which is operated to a loss-less snubber capacitor. The switching control technique of the converters are simplified and its drive in constant switching frequency.The simulink model for a proposed converter is developed using MATLAB and the same is used for simulation studies. The results from the simulation studies showed that effective soft-switching zero voltage switching (ZVS) and zero current switching (ZCS) action using partial resonant circuit with constant frequency than the regenerative snubber circuit.

Keywords

Buck-Boost Converter, Partial Resonant Circuit, Regenerative Snubber Circuit, Soft-Switching Technique.

Full Text

     

S. Vidhya ¹, K. Malarvizhi ², K. Baskaran ³, C. Udhaya Shankar ¹, P. Maithili ⁴

Affiliations
1 Department of Electrical and Electronics Engineering, Kumaraguru College of Technology, IN
2 Kumaraguru college of Technology, Coimbatore, IN
3 Government College of Technology, Coimbatore, IN
4 Department of Electrical and Electronics Engineering, Kumaraguru College of Technology, IN

Abstract

Multilevel inverter (MLI) is a new breed of power converter that is suited for high power applications. Multilevel inverter is an effective and practical solution for increasing power and reducing harmonics in ac waveforms. This paper focuses on the implementation of inverted sine PWM technique for asymmetric cascaded multilevel inverter with unequal DC sources. This technique combines the advantage of inverted sine PWM technique and asymmetric cascaded multilevel inverter with unequal DC sources. Performance evaluation of the proposed PWM strategy and inverter topology is done using MATLAB/SIMULINK for single phase asymmetric multilevel inverter.

Keywords

Asymmetric Multilevel Inverter, Multi-Carrier PWM, ISCPWM Technique, THD, Fundamental Output Voltage.

Full Text