English Translation for Electrical... Thank you!

The new energy incorporation electricity generation is the current research hot spot, incorporates the invertor is realizes the electrical energy to present electrical network's important link. But because incorporates the PWM signalling switch frequency which the invertor uses to be low, causes the output current to include the big overt overture. But because incorporates the PWM signalling switch frequency which the invertor uses to be low, causes the output current to include the big overtone.This article to reduce the current harmonics which the turn-on frequency creates, introduces the LCL This article to reduce the current harmonics which the turn-on frequency creates, introduces the LCL filter substitution model in the incorporation invertor the inductance filter, and aims at using the LCL filter to incorporate the instability which the invertor system brings, proposed the bridge arm output current and the electrical network output current double closed loop control policy. Obtains the network voltage accurately the phase angle, has the vital significance in the electric power electronic installation design.Regarding needs the systemic voltage synchronization the electric power electronic installation design. Regarding needs the systemic voltage synchronization the electric power electronic installation, the phase information correct or not has the enormous influence to the control performance. Regarding needs the systemic voltage synchronization the electric power electronic installation, the phase information correct or not has the enormous influence to the control performance.Therefore in the article proposed one kind based on the intelligent PI control's software phase-locked loop, through the Therefore in the article proposed one kind based on the intelligent PI control's software phase-locked loop, through the synchronized revolving coordinate track principle, serves phase-lock's purpose.Because has introduced the LCL filter, in the article has also Because has introduced the LCL filter, in the article has also carried on the analysis to the LCL filter's design.The simulation result proved that may suppress the harmonic current effectively using the LCL filter as the converter and electrical network's design. The simulation result proved that may suppress the harmonic current effectively using the LCL filter as the converter and electrical network's connection, incorporates the invertor double closed-loop control to cause the system stability and the dynamic further strengthens. dynamic further strengthens.