Abstract

Control strategy is the key technology of power electronic converter equipment. In order to solve the problem of controller design, a general design method is presented in this paper, which is more convenient to use computer machine learning and provides design rules for high-order power electronic system. With the higher order system Lie derivative, the nonlinear system is mapped to a controllable standard type, and then classical linear system control method is adopted to design the controller. The simulation and experimental results show that the two controllers have good steady-state control performance and dynamic response performance.

Highlights

  • As the main equipment of an AC power system, grid-connected voltage source inverters (VSI)have been widely used in recent years, such as photovoltaic inverters [1], Pulse Width ModulationPulse Width Modulation (PWM) rectifiers [2], static var generators [3], active power filters [4], etc.The filter is an important part of the inverter, the structure of which directly determines the mathematical model and control mode of the inverter

  • In order to achieve the control of high-order power electronic systems, the design of controller into a simple form has not been analyzed by literatures

  • Based on LCL filter type grid-connected inverters is studied in this paper

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Summary

Introduction

As the main equipment of an AC power system, grid-connected voltage source inverters (VSI). System and analyzed linearization and sliding mode variable structure control to complete the control of three-phasethe performance characteristics the system [15].to decouple the torque and stator flux of the inductive four-leg inverter [13]. In order to achieve the control of high-order power electronic systems, the design of controller into a simple form has not been analyzed by literatures. In order to achieve the control of high-order power electronic systems, the design of controller system, two controller design methods based on state feedback linearization are proposed in this based on LCL filter type grid-connected inverters is studied in this paper. Lie derivative vector field is used to solve the system relationship and design the decoupling system, two controller design methods based on state feedback linearization are proposed in this paper. The performance of the two controllers is compared and analyzed by simulations and experiments

Model of the Three-Phase Three-Leg Grid-Connected Inverter
Single Closed-Loop Control Strategy Based on State Feedback Linearization
Parameters
State Feedback of Inverter Side Inductance and Filter Capacitor Subsystem
Parameters Design of Double Closed Loop Controller
Simulation and Experimental Environment
Photograph the test
Steady State Control Performance
Dynamic Control Performance
Conclusion
Full Text
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