Space Vector Modulation strategy to reduce the Common Mode perturbations in Matrix Converters

Abstract

An alternative Space Vector Modulation (SVM) strategy which reduces the Common Mode (CM) perturbations when using Matrix Converters (MC) is presented in this work. The proposed method maintains the conventional SVM pattern but the zero vectors, which have been shown to introduce not only high CM voltage values but also high CM voltage time derivative. Hence the three zero vectors are replaced by three rotating ones, in such a way that the fundamental output voltage vector and the input current direction remains both unchanged. Results of the proposed SVM strategy driving a Permanent Magnet Synchronous Machine (PMSM) are provided to confirm the effectiveness of the method.

Common mode voltage reduction of quasi‐Z source indirect matrix converter

“…According to (27), modulation index of the inverter stage should satisfy (29) to maintain positive duty cycles of three active vectors.…”

“…Predictive control is presented in to reduce the CMV. Reference presents an alternative space vector PWM pattern strategy that reduces common mode perturbations, where CMV reduction varies from a minimum value of 11% to a maximum value of 33% at the cost of introducing two more switching commutations per PWM period. Two CMV reduction methods were proposed in , where the first one used four active states and avoided zero state in the inverter stage to reduce CMV, and in the second one, zero vectors were eliminated but two active vectors were employed in the rectifier stage, and two zero vectors were used in the inverter stage to generate output voltage reference.…”

“…However, these methods result in high converter volume, high weight, and high cost. The improvement of modulation strategies is the costeffective solution to reduce CMV [25][26][27][28][29]. A modulation method is suggested in [25] to reduce 'virtual DC-link' voltage and the CMV.…”

Reduction of Output Common Mode Voltage Using a Novel SVM Implementation in Matrix Converters for Improved Motor Lifetime

“…CMV reduction in indirect T MC is discussed in [30,31]. This paper presents a study of the modulation strategy introduced in [32], In [32] a brief introduction of using rotating vectors was presented. This paper expands and analyses the method including both simulation and experimental validation.…”