A new control strategy for three-phase voltage-source pulse width modulation (PWM) converter which is based on natural coordinate (abc coordinate) and power feedforward is presented. According to the p-q theory in natural coordinate, the concept of instantaneous active and reactive voltage is presented. Then the natural coordinate control method of PWM converter is combined with vector control strategy based on grid voltage orientation to reduce the control complexity, which saves grid phase detection and eliminates coordinate transformation. It puts forward a load power feedforward method to reduce the impact of load (including active and passive load) power fluctuation on DC voltage of PWM converter. Feedforward gain matrix is deduced from load disturbance to three-phase AC current instruction based on the power balance and the p-q theory, improving the robustness of the PWM converter DC voltage control. RCP experiment results show the correctness and feasibility of the above-mentioned method.