scholarly journals Quality Assessment of Soft-Switching Based Single-phase Pulse Width Modulated Voltage Source Inverter (PWM VSI)

2012 ◽  
Vol 2 (4) ◽  
Author(s):  
Z.A. Jaffery ◽  
Sunil Kumar Chaudhary
Keyword(s):  
Quality Assessment ◽  
Pulse Width ◽  
Single Phase ◽  
Soft Switching ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Pulse Width Modulated

Modern control of a three-phase pulse-width modulated voltage source inverter

2007 ◽  
Author(s):  
Toufic Al Chaer ◽  
Laurent Rambault ◽  
Jean-Paul Gaubert ◽  
Maged Najjar ◽  
Sebastien Cauet
Keyword(s):  
Pulse Width ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Pulse Width Modulated ◽  
Three Phase ◽  
Modern Control

scholarly journals Parasitic Effects of PWM-VSI Control Leading to Torque Harmonics in AC Drives

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1713
Author(s):  
Juriy Plotkin ◽  
Nurgul Almuratova ◽  
Assel Yerzhan ◽  
Victor Petrushin
Keyword(s):  
Pulse Width ◽  
Torque Control ◽  
Voltage Source ◽  
Switching Frequency ◽  
Voltage Source Inverter ◽  
Pulse Width Modulated ◽  
Voltage Source Inverters ◽  
Ac Drives ◽  
Parasitic Effects ◽  
Low Order

Precise torque control without pulsations is one of the major quality issues in pulse-width modulated voltage-source inverter (PWM-VSI) drives. Theoretically, it could be postulated that at frequencies of some kHz, the machine’s inertia absorbs switching frequency torque harmonics, and the resulting torque becomes smooth; though, in reality, parasitic effects in voltage source inverters may cause additional torque harmonics of low order. In particular, first, second and sixth torque harmonics are observed. Such torque harmonics are especially dangerous for normal drive operation, since they may be amplified by drive train resonances at corresponding rotational velocities. New parasitic effects in PWM-VSI control, leading to torque harmonic of low order, are described in the paper, and recommendations for their compensation are given.

scholarly journals Modified SHE for Grid Connection.pdf

2019 ◽  
Author(s):  
Subhendu Bikash Santra
Keyword(s):  
Pulse Width ◽  
Single Phase ◽  
Mixed Model ◽  
Theoretical Concept ◽  
Multiple Solution ◽  
Voltage Source ◽  
Numerical Techniques ◽  
Pwm Inverter ◽  
Pulse Width Modulated ◽  
Laboratory Prototype

<div>This paper presents an improved selective harmonics elimination technique for PV assisted single phase</div><div>grid-tied pulse width modulated (PWM) voltage source</div><div>inverter (VSI). The switching angles are determined offline</div><div>through numerical techniques and stored in microcontroller</div><div>memory as a function of modulation index md for online</div><div>application. For multiple solution, the solution which leads to</div><div>lower change of switching angles (α) from the previous md, is considered for storing in the processor memory. This leads to less no. of sections for the processor when a piecewise mixed model is considered for storing the entire switching angle curve. This technique is well suited for limiting voltage THD in two level grid connected VSI with L-C filter. The verification of theoretical concept is done in laboratory prototype of PV (500 W) connected to grid-tied PWM inverter. The control environment is realized in embedded FPGA interfaced national instrument hardware.</div>

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