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This paper introduces a family of step-up DC/AC converters based on discontinuous-output pump circuits. The impedance-source inverter (ZSI) is a step-up DC/AC converter that is composed of a conventional inverter and an impedance network. This impedance network is actually a pump circuit with discontinuous output voltage. Considering concept of ZSI, other discontinuous output pump circuits can be...
In a vehicle, radiational noise generated by the common-mode current in an inverter system is the cause of electromagnetic problems of in-vehicle radio antennas. This paper proposes a new method ”Z-matched ACC” for suppressing the common-mode current at AM band. With this method, the freewheel current, which reduces the common-mode current suppression effect at AM band in conventional voltage-cancellation...
This paper proposes a general device-based common mode (CM) model for inverter-fed motor system that able to describe the CM conducted electromagnetic interference (EMI) propagating mechanism in the system. Numerical parameters are derived using impedance measurements. The procedure of model elements extraction is introduced systematically and is convenient to implement. The derived model makes the...
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