Phase compensation system with asymmetric parameters of current loop controller

The invention discloses a phase compensation system with asymmetric current loop controller parameters, which is based on a grid-connected inverter system, the grid-connected inverter system comprises an inverter main circuit, a phase-locked loop PLL, a current loop and a modulation sampling module, the inverter main circuit is connected to a power grid through a common point PCC, the common point PCC voltage outputs a phase angle through the PLL, and the phase angle is output through the modulation sampling module. The current loop obtains a grid-connected current actual value and a phase angle, the actual value and the phase angle are subjected to dq conversion, the converted grid-connected current actual value is compared with a reference value, after comparison, a voltage control signal is output after PI control in the current loop, and a PWM signal for controlling an inverter main circuit is generated after the voltage control signal passes through a modulation sampling module. The current loop comprise