Electric vehicle grid-side harmonic elimination system

The utility model provides an electric vehicle grid-side harmonic elimination system, and relates to the technical field of electrical engineering control. The electric vehicle grid-side harmonic elimination system is composed of an electric vehicle charging pile and a shunt active power filter. A power supply grid is respectively connected with a first inductor (L1) and a second inductor (L2); the other end of the first inductor (L1) is connected with a nonlinear load (W); the other end of the second inductor (L2) is connected with a PWM converter (S); the access end of the power supply grid and the capacitor (C) are respectively connected onto the input end of an instruction current operator (2) and the input end of a PWM generator via a voltage sampling A/D module (1). According to the electric vehicle grid-side harmonic elimination system, the problem that the content of the electric vehicle charging pile grid-side harmonic is large can be solved, fundamental-wave reactive current, negative-sequence current, zero-sequence current and harmonic current in the load current can be filtered, fundamental-wave positive-sequence active component is only left, and influences of zero sequence leakage errors can be avoided.