Four-Step Current Commutation Strategy for a Matrix Converter Based on Enhanced-PWM MCU Peripherals

Luis Ramon Merchan-Villalba,Diego Armando De Jesus Gutierrez-Torres,Alejandro Pizano-Martinez,Jose Merced Lozano-Garcia,Juan Gabriel Avina-Cervantes

doi:10.3390/electronics8050547

Luis Ramon Merchan-Villalba, Diego Armando De Jesus Gutierrez-Torres + Show 3 more

Open Access

https://doi.org/10.3390/electronics8050547

Copy DOI

Journal: Electronics	Publication Date: May 15, 2019
Citations: 7	License type: CC BY 4.0

Affiliation: Universidad de Guanajuato

Abstract

In this paper, an efficient implementation of the four-step current commutation technique for controlling bidirectional power switches in a Matrix Converter (MC) is proposed. This strategy is based on the enhanced pulse width modulation peripheral included in the C 2000 Delfino 32-bit microcontroller of Texas Instruments. By tuning the algorithmic parameters contained in this module, the four-step commutation process is carried out on the Microcontroller Unit (MCU) without overloading the full complex processor and avoiding the use of additional special hardware such as Field-Programmable Gate Arrays (FPGA) or Complex Programmable Logic Devices (CPLD) when controlling the MC. The algorithm is implemented on the TMS320F28379D MCU and operationally validated on an MC prototype, where the functionality of the proposal is demonstrated.

Highlights

The direct matrix converter is a power electronics topology that efficiently carries out the AC-AC energy conversion without intermediate stages
The four-step commutation strategy along with the Singular Value Decomposition (SVD) modulation technique were implemented in the TMS320F28379D device
This paper proposed a strategy to implement the four-step current commutation technique using the enhanced Pulse Width Modulation (ePWM) peripheral of the TMS320F28379D Microcontroller Unit (MCU) of TI

Summary

Introduction

The direct matrix converter is a power electronics topology that efficiently carries out the AC-AC energy conversion without intermediate stages. This converter utilizes solid-state power devices and a minimum of energy storage elements, only for filtering purposes; besides, it incorporates beneficial characteristics, viz., bidirectional power flow, compact structure, high-quality low-frequency signals, and a unitary power factor operation, among others [1,2,3]. The BDS is an idealized element with the ability to block voltage and conduct current in both directions.

Objectives

Results

Discussion

Conclusion