Input Power Factor Compensation Strategy for Zero CMV-SVM Method in Matrix Converters

Abstract

The space vector modulation (SVM) method using only rotating vectors is very effective to suppress the common-mode voltage (CMV) for matrix converters (MCs). However, the effect of the input filter on the input power factor (IPF) has not been fully investigated when using this method. This study investigated the effect of the input filter on the displacement angle and proposes an IPF compensation strategy for the zero CMV-SVM method in MCs. The proposed strategy analyzes the duty cycles of rotating vectors under the IPF-compensation condition. Through this analysis, the proposed strategy adjusts the zero vector by using a set of three counterclockwise-rotating vectors or three clockwise-rotating vectors to make all the duty cycles non-negative, ensuring that the zero CMV-SVM method can be applied to compensate the IPF for the MCs. This study also determines the condition to achieve unity IPF for the main power source and the maximum allowable IPF if the above condition is not met. Finally, experimental results are provided to validate the theoretical study. INDEX TERMS Matrix converter, space vector modulation, zero common-mode voltage, rotating vector, input power factor.

A Novel Discontinuous PWM Method With Hybrid Three-Step Commutation to Reduce Common-Mode Voltage for Direct Matrix Converter

“…DSVM, known for its direct power conversion and absence of third-harmonic components [10], is more appealing for CMV reduction in DMC. Several DSVM techniques have been developed to limit the CMV peak to 42% by replacing zero vectors with active vectors [11], rotating vectors [12], or lower input phase-to-phase voltages [13]. In [14], they used active vectors instead of zero vectors in DSVM methods due to having a smaller CMV of active vectors than zero vectors.…”

Multiple load operation of indirect matrix converter for different frequencies using symmetrical space vector modulation

“…Recently, a new control strategy for IMCs referred to as discontinuous pulse width modulation (DPWM) based on active‐current vector amplitude characteristics has been introduced in the literature to reduce common‐mode voltage (CMV) 35 . Also, to compensate the input power factor (IPF) for the MC's and to determine the condition for unity IPF by analyzing the duty cycles of rotating vectors and ensuring the zero CMV, an advanced control strategy has been reported 36 …”

“…35 Also, to compensate the input power factor (IPF) for the MC's and to determine the condition for unity IPF by analyzing the duty cycles of rotating vectors and ensuring the zero CMV, an advanced control strategy has been reported. 36 This study becomes important when it comes to parallel drives and wind power generation. The use of a large number of wind turbines linked to DFIG or PMSG necessitates more variable voltage, variable frequency power converters for use in parallel industrial drives and wind power production.…”