This paper presents a systematic step-by-step design procedure for the dc inductance of a current source converter (CSC). The design is based on the analysis of acceptable ripple level in the dc current of the CSC. A model of current source inverter (CSI) under the operation of space vector modulation is established to estimate the dc current ripples in the system. The influence of different switching sequences is analyzed in detail to provide more precise design results. The analysis and design of the dc inductance have been verified by simulations in MATLAB/Simulink. Compared to conventional methods, the proposed method can reduce the dc inductance remarkably in the same ripple conditions.