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| ZVS Conditions of a Soft Switching PWM Inverter |
| Wang Qiang, Zhang Huaguang, Chu Enhui, Liu Xiuchong, Hou Limin |
| Northeastern University Shenyang 110004 China |
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Abstract A novel soft-switching PWM inverter is proposed. It could achieve ZVS when conventional SPWM is applied. When modulation index is relatively great, minimum width of trigger pulse is needed to limit to achieve ZVS, which could lead to high distortion ratio of the output phase current. In order to solve the problem, the condition of ZVS is analyzed in detail in the paper. By designing proper inductance parameters, ZVS could also be achieved without the restriction of minimum width of trigger pulse. The simulation and experimental results show that switches could achieve ZVS via the method. The soft-switching PWM inverter can effectively reduce switching loss and improve efficiency.
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Received: 11 April 2008
Published: 18 February 2014
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2009, Vol. 24 
