This paper deals with a pulse width modulated (PWM) current source converter with single-phase input and three-phase output, and proposes control strategies for it. The converter circuit is a three-phase bridge circuit with three legs. The three-phase PWM method is used to obtain sinusoidal input and output. The single-phase-to-three-phase conversion can be achieved by using the phase-shifted PWM pattern. Moreover, to obtain a balanced three-phase output, the phase-angle control strategies of two PWM patterns are employed. The angle is determined with the feedback of the positive phase sequence component of the output currents. The paper describes in detail the circuit operation and the control method for balanced sinusoidal output. The RL static loads are used as three-phase loads to examine the performance of the converter. The experimental results prove that the three-leg converter with single-phase input can generate balanced three-phase output and includes sinusoidal waves in the input/output sides.
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