A three-phase variable frequency converter that accomplishes resonant commutation in its operation to minimize switching losses is presented. Switching strategies for the converter are detailed and the TMS320C30 DSP based realization of the controller is discussed. Pspice simulation of the converter and its results are presented. Experimental work on a laboratory prototype is described. Results from the tests and simulation are compared and observations summarized. Scope of future work is highlighted and the performance parameters of the converter as a potential variable frequency drive in electric/hybrid vehicle applications are identified.

V. Nallaperumal

Papers

A three-phase TMS320C30 DSP based resonant-commutated converter