Carrier-Based Implementation of SVPWM for Dual Two-Level VSI and Dual Matrix Converter With Zero Common-Mode Voltage

Abstract

Pulse width modulation (PWM) converters generate switching common-mode voltages (CMVs) across the load terminals. These voltages cause common-mode currents, leading to bearing failure in motor loads and electromagnetic interference problems. This paper presents a generalized carrier-based PWM technique for open-end winding motor drives that completely eliminates switching CMV. The proposed method is applicable to both dual two-level voltage source inverter and dual matrix converterbased open-end winding drives. Detailed analysis shows that the carrier-based method requires significantly less computation compared to the corresponding space vector implementation. This paper also outlines the relationship between the two implementations. The carrier-based method is shown to achieve superior performance in terms of resource requirements and execution time when implemented on a field-programmable gate array-based real-time control platform. Simulation and experimental results have been presented to validate the proposed method.Index Terms-AC motor drive, carrier-based modulation, common-mode voltage (CMV), dual two-level inverter, dual matrix converter (MC), open-end winding drive, pulse width modulation (PWM).

Open-End Winding Induction Machine Fed by a Dual-Output Indirect Matrix Converter

“…The so-called bearing currents have been found to be a major cause of premature bearing failure in PWM inverter motor drives [19]. One of the main advantages of the open-end winding topology is the possibility of reducing the common-mode voltage at the machine terminals and this has been the research topic of several investigators [7]- [11], [13], [20]- [24]. For the topology depicted in Fig.…”

An SD Card Flash-Memory-Based Implementation of a Multioptimal Three-Phase PWM Generator

“…Another well-known possibility [16], [17], [18], [19], [20] consists of using the so-called Discontinuous PWM algorithm where zero-states are selected so that a switch is kept ON or OFF for 60 degrees on each fundamental period.…”

“…5 also explains that we can have on a sampling interval, either a single pulse, 3 merged pulses, or 4 merged pulses, depending on the angular coordinate and modulation index. Conventional SVM with modulation of the sampling frequency [19][20][21][22][23] Our approximation of the sinusoidal variation of frequency with a multistepped waveform. [1] Discontinuous SVM -no-switching (-30,30) [14][15][16][17][18] -pulse freq.…”

Common-Mode Voltage Reduction for Matrix Converters Using All Valid Switch States

“…using only the rotating vectors that correspond to the switch configurations with zero CMV in dual structure converters [8]- [16]. This technique has been applied to direct and indirect MC fed open-end winding AC drives to reduce or even eliminate the CMV.…”