﻿ 一种基于PQ控制的DG逆变器模型

一种基于PQ控制的DG逆变器模型A DG Inverter Model Based on PQ Control

Abstract: Grid-connected inverter as a link between the distributed power supply and power grid, plays a key role to the distributed power supply and the network performance. In this paper, a DG inverter model based on PQ control is designed. The inverter is selected by using the three-phase bridge PWM inverter, and the KCL and KVL are used to model the mathematical model. The mathematical model is analyzed by the mathematical model so as to carry out the design of the inverter controller. PQ control module (Controller) provides the dq conversion module mainly by the frequency tracking effect of the SPLL and coordinate transformation (SPLL/dq_transform); it can get the reference current dq component (iLdref, iLqref), power and power factor control (P/Q control) module, and the final can be 6-way PWM control signal current control (I Control) module. The simulation results show that the DG inverter model based on PQ control is excellent in performance.

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