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Filter configuration and PWM method for single phase inverters with reduced conducted EMI noise | IEEE Conference Publication | IEEE Xplore

Filter configuration and PWM method for single phase inverters with reduced conducted EMI noise


Abstract:

Electromagnetic Interference (EMI) noise is one of the major issues during the design of the grid-tied power converters. Presence of high dv/dt in Common Mode (CM) voltag...Show More

Abstract:

Electromagnetic Interference (EMI) noise is one of the major issues during the design of the grid-tied power converters. Presence of high dv/dt in Common Mode (CM) voltage, excites the parasitic capacitances and causes injection of narrow peaky current to ground. This results in high EMI noise level. A topology consisting of a single phase PWM-rectifier with LCL filter, utilising bipolar PWM method is proposed which reduces the EMI noise level by more than 30 dB. This filter topology is shown to be insensitive to the switching delays between the legs of the inverter. The proposed topology eliminates high dv/dt from the dc-bus CM voltage by making it sinusoidal. Hence, the high frequency CM current injection to ground is minimized.
Date of Conference: 31 August 2014 - 03 September 2014
Date Added to IEEE Xplore: 03 November 2014
ISBN Information:
Conference Location: Beijing, China

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