Active Common-Mode Voltage Cancellation for Three-phase PWM Rectifierfinverter Systems based on a New Topology
نویسنده
چکیده
After giving a summary of investigated passive and active schemes to mitigate common mode problems a modeling approach for the common mode voltage (CM voltage) is presented for three-level rectifiers. A novel Active Commonmode Voltage Cancellation (ACC) scheme is proposed, utilizing the reconstructed CM voltage to derive a simpler driving scheme as presented by previous contributions. The ACC scheme function based on switched mode operation is explained, modeling and design of the power circuitry including a 5winding transformer is outlined and simulation results prove its viability and effectiveness in eliminating CM voltage in a 3phase / 3-level rectifier for telecom systems. A verification of the physical implemented circuitry is obtained from selected measured results on mentioned overall system
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تاریخ انتشار 2004