Mathematical Design and Analysis of Three-Phase Inverters: Different Wide Bandgap Semiconductor Technologies and DC-Link Capacitor Selection

Tawfiq, Kotb B.; Mansour, Arafa S.; Sergeant, Peter

doi:10.3390/math11092137

Cited by 4 publications

(3 citation statements)

References 35 publications

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“…Many authors have documented the phenomenon of extra bearing currents in variable-speed drive systems because of fast-switching IGBT inverters [64][65][66][67][68][69][70][71][72]. The CMV is the source of these bearing currents.…”

Section: The Types Of Bearing Currentmentioning

confidence: 99%

Bearing Current and Shaft Voltage in Electrical Machines: A Comprehensive Research Review

2023

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The reliability assessment of electric machines plays a very critical role in today’s engineering world. The reliability assessment requires a good understanding of electric motors and their root causes. Electric machines mostly fail due to mechanical problems and bearing damage is the main source of this. The bearings can be damaged by mechanical, electrical, and thermal stresses. Among all stresses, the researcher should give special attention to the electrical one, which is bearing current and shaft voltage. This review paper introduces a comprehensive study of bearing current and shaft voltage for inverter-fed electric machines. This study aims to discuss several motor failure processes, as well as the sources and definitions of bearing current and shaft voltage. The different kinds of bearing currents are addressed and the parasitic capacitances, which are the key component to describe bearing current, are determined. Several measurement approaches of bearing current will be discussed. Furthermore, modeling of bearing current will be covered together with the machine’s parasitic capacitances. Moreover, the different bearing current mitigation techniques, as described in many papers, will be thoroughly addressed. The use of rewound multiphase machines for mitigation of bearing current will be proposed and compared to a three-phase machine. Finally, various pulse width modulation techniques of multiphase systems that reduce bearing current and shaft voltage will be investigated, and the findings described in the literature will be summarized for all techniques.

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Section: The Types Of Bearing Currentmentioning

confidence: 99%

Bearing Current and Shaft Voltage in Electrical Machines: A Comprehensive Research Review

2023

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“…However, traditional silicon (Si) IGBT technology has limitations in achieving high switching frequencies, resulting in compromised current quality at higher fundamental frequencies [4,5]. The decrease in the frequency modulation index ( f s / f 0 ) with increasing fundamental frequency leads to higher total current harmonic distortion (THD) [6].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of IGBT and SiC MOSFET Three-Phase Inverter: Impact of Parasitic Capacitance on the Output Voltage Distortion

Poolphaka,

Jamshidpour,

Lubin

et al. 2023

Actuators

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This study investigates the nonlinearities in three-phase inverters for SiC-based systems and compares their performance to IGBT-based systems. An analytical model of inverter voltage distortion is developed, which accounts not only for dead time (td), switching delay time, switching frequency (fs), and voltage drops of power devices, but also for output parasitic capacitance (Cout). Experimental tests validate the model, which provides a more accurate estimate of the inverter’s output phase voltage distortion. The power device characteristics are obtained from datasheets, while Cout is determined through experimentation. Three-phase inverters with varying switching frequencies, fundamental frequencies, and dead-time values are used in simulations and experiments to determine the influence of nonlinearity on phase voltage deviation and current distortion. The results show that, due to SiC devices’ faster switching time, the phase voltage deviation and phase current distortion are lower in SiC-based inverters than in IGBT-based ones for high-frequency applications, as the dead time can be reduced.

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“…Conventionally, the six-switch (B6) inverter is utilized [6][7][8][9][10][11][12]. However, interest has increased in utilizing inverters with higher efficiency, better performance, and lower costs.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Review of Three Different Power Inverters for DC–AC Applications

Abdel-Aziz,

Elgenedy,

Williams

2023

Energies

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This paper presents a comparative review of three different widely used power inverters, namely the conventional six-switch inverter; the reduced switch count four-switch inverter; and the eight-switch inverter. The later inverter can be reconfigured as a neutral-point diode-clamped inverter at the failure of one inverter leg. The three power inverters are compared and discussed with respect to cost, complexity, losses, common mode voltage, and control techniques. The paper is intended to serve as a guide regarding selecting the appropriate inverter for each specific application. Simulation results are presented to demonstrate the performance of the three power inverters, followed by a comprehensive comparison between the three power inverters.

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Mathematical Design and Analysis of Three-Phase Inverters: Different Wide Bandgap Semiconductor Technologies and DC-Link Capacitor Selection

Cited by 4 publications

References 35 publications

Bearing Current and Shaft Voltage in Electrical Machines: A Comprehensive Research Review

Bearing Current and Shaft Voltage in Electrical Machines: A Comprehensive Research Review

Comparative Study of IGBT and SiC MOSFET Three-Phase Inverter: Impact of Parasitic Capacitance on the Output Voltage Distortion

A Comparative Review of Three Different Power Inverters for DC–AC Applications

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