Search results for "pulsewidth modulation"

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Generalized PWM-VSI Control Algorithm Based on a Universal Duty-Cycle Expression: Theoretical Analysis, Simulation Results, and Experimental Validati…

2007

This paper presents a new approach in realizing various carrier-based pulsewidth-modulation techniques by a generalized control algorithm, which is referred to as the universal control algorithm and is obtained via unequal sharing of null states. The flexibility of such an approach allows one to easily and quickly control two-level inverters. Furthermore, this approach may be also extended with few changes to the control of multilevel inverters. The algorithm that is presented here for two-level voltage-source inverters (VSIs) also obtains efficient detection and management of both the linear and overmodulation ranges. In the overmodulation range, which is treated by using the alpha-beta co…

Engineeringbusiness.industryvoltagesource inverter (VSI)pulsewidth modulation (PWM)Multilevel inverter; overmodulation; pulsewidth modulation (PWM); space-vector modulation (SVM); voltagesource inverter (VSI)space-vector modulation (SVM)Industrial and Manufacturing EngineeringExpression (mathematics)Support vector machineMultilevel inverterNull (SQL)Duty cycleControl theoryWorkbenchAlgorithm designElectrical and Electronic EngineeringOvermodulationbusinessovermodulationPulse-width modulation
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Comprehensive Modeling and Experimental Testing of Fault Detection and Management of a Nonredundant Fault-Tolerant VSI

2015

This paper presents an investigation and a comprehensive analysis on fault operations in a conventional three-phase voltage source inverter. After an introductory section dealing with power converter reliability and fault analysis issues in power electronics, a generalized switching function accounting for both healthy and faulty conditions and an easy and feasible method to embed fault diagnosis and reconfiguration within the control algorithm are introduced. The proposed system has simple and compact implementation. Experimental results operating both at open- and closed-loop current control, obtained using a test bench realized using a dSPACE system and the fault-tolerant inverter protot…

Test benchEngineeringControl; Fault diagnosis; Fault tolerance; Inverters; Power converters; Pulsewidth modulationSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciFault (power engineering)Pulse width modulationFault detection and isolationMathematical modelControl theoryControlinverterInsulated gate bipolar transistorElectrical and Electronic EngineeringCircuit faultFault diagnosisPower convertersFault tolerant systembusiness.industryControl reconfigurationFault toleranceFault toleranceControl engineeringfault diagnosiInvertersPower converterStuck-at faultControl and Systems EngineeringInverterpulsewidth modulationVectorbusiness
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