Current and voltage tracking controls for a DSP-based SMR

This paper presents the robust digital current and voltage tracking controls for a DSP-based switch-mode rectifier (SMR). First the SIMR power circuit and its DSP-based fully digital control scheme are established. Then the robust current waveform tracking control is made to yield the improved current tracking control performance, and hence the improved line drawn power quality. As to the voltage control, a robust two-degree-of-freedom control scheme is developed. And a systematic design procedure is proposed to find its parameters. Both good voltage tracking and regulation responses are obtained by the developed SMR. Hence it can be employed as a front-end converter for many types of power electronic systems, providing adjustable and well-regulated DC source voltage. Effectiveness of the developed SMR is verified experimentally.

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