A digital signal controller for high frequency-based grid-tie inverter connected to wind emulator system: Design and implementation

Abstract

In this paper, a design and implementation of a digital signal controller (DSC) for high frequency-based grid-tie inverter connected to wind emulator system is designed, fabricated, and tested. A 150 MHz (6.67-ns Cycle Time) Texas Instruments TMS320F28335 processor chip is used as the heart of the developed control board. DSC based board is a highly integrated, high-performance solution for demanding control applications. It is designed for applications requiring a single board solution to control up to four, high frequency-based three phase converters or in general power electronics industrial applications. The main advantages of the developed DSC-board are: lower cost, higher processing speed capability, smaller size and weight, more reliable (embedded and computer independent with USB communication for program downloading process). The developed controller is designed for controlling a 3 kW grid-connected high frequency PWM inverter in order to inject the wind emulator system power into the grid. This study is also implemented in a laboratory setup for 3 kW Semikron power inverter module under 30 kHz switching frequency. The experimental results are presented and discussed to verify the effectiveness of the developed controller for high frequency operation.