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A two-stage cascaded converter is formed by connecting two subconverters in series. Output impedance of one subconverter will, therefore, interact with input impedance of the other subconverter. Such interaction may affect the system dynamics and stability, especially when one subconverter is constant-power-controlled, and hence, has different impedance characteristics when its power reverses. To...
For the cascaded converter system, the output impedance of source converter interacts with the input impedance of load converter, and the interaction may cause the system instability. In bidirectional applications, when the power flow is reversed, the impedance interaction also varies, which brings more uncertainty to the system stability. An investigation is performed here for showing that the forward...
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