A new matrix converter based on Zeta circuit

A new AC-DC-AC matrix converter topology based on Zeta circuit is proposed to resolve the problem of low voltage transfer ratio of conventional matrix converter. The basic configuration of the new topology and its fundamental principle are firstly introduced, the analytic expression on the function of voltage transfer ratio and duty cycle is analyzed, and the rationale of double-loop control strategy is clarified. Finally the validity and feasibility of the new topology are tested by means of computer simulation. The results indicate that the output voltage transfer ratio and frequency can be regulated optionally, furthermore the system can be started very well and the total harmonic distortion of waveform is low. So the inherent drawback of low voltage transfer ratio of traditional matrix converter is effectively settled. This study may provide inspiration for further engineering application.