Abstract: For improving the dependability and practicability of the matrix converter, according to the space vector modulation method of the equivalent structure of the AC-DC-AC convertion, the principle of the space vector modulation method is investigated. A closed-loop output voltage control method based on the space vector modulation is proposed. The discrepancy between the actual output voltage and expected output voltage of the matrix converter is calculated and added to the switch modulation matrix in the next sampling period as feedback. The validities of the theoretical method are demonstrated by the simulation in Matlab software. In the end, the experimental control system based on DSP(TMS320FL2407A) are realized.