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This paper discusses vector modulation and sliding mode control for a kind of high frequency link matrix inverter (HFLMC), and presents a kind ofDe-Re-couple analysis idea to the HFLMC. The De-Re-couple vector condition also has been induced. Especially aiming at its non-linear characteristic, this paper proposes a new control strategy called De-Re-couple vector modulation slide mode control and summarized the design steps of output voltage sliding mode controller. The accuracy is confirmed by closed loop simulation and Loop-locked experiment. The accordant results of MatLab simulation and experiment through DSP+CPLD controller confirm the feasibility of De-Re-couple analysis idea and validity of sliding mode control .And it provides the beneficial information for the further research.

In order to improve the efficiency and reliability of the phase conversion process of three-phase current source rectifier(CSR), in this paper, the traditional space vector pulse width modulation (SVPWM) strategy of the six sectors for threephase CSR is changed into a novel SVPWM strategy of the twelve sectors. And by changing the synthesis sequence of effective vector, the power tube which is not in the natural commutation state is made to be do it. Moreover, zero-current switching can be achieved, thus switch loss and voltage stress can be decreased. The proposed space vector modulation technology achieves the expected goals. The simulation and selected experimental results are reported in order to validate the effectiveness of the proposed strategy.

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