Power Electronic Converters

13Control Design of Grid-Connected Three-Phase Inverters

13.1 Introduction

After studying this chapter, the reader should be familiar with the most common inverter control functions. Moreover, the readers should be able to apply the dynamic model and loop-shaping technique to design stable control loops. In this chapter, the most fundamental control functions of a three-phase grid-connected inverter are included in the dynamic model such as the AC current control, phase-locked-loop, and DC voltage control. The concepts of decoupling gains and proportional grid voltage feedforward are introduced. Moreover, the principle of tuning the control loops by using loop-shaping technique is discussed and demonstrated by several simulation and experimental ...