Search results for "AC motor drive"

showing 4 items of 4 documents

Automotive Brushless Motor Powered by Fuel Cell

2014

Brushless motorsComputer sciencebusiness.industryAutomotive industryFuel cellsControl engineeringAC motor drives Brushless motor automotive simulation fuel cell.Settore ING-IND/32 - Convertitori Macchine E Azionamenti ElettricibusinessAC motorAutomotive engineering
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DC link voltage swinging and load current unbalance in fault tolerant VSI. overview and compensation strategies

2015

The topic of this paper is the discussion on the performance of a three-phase fault tolerant inverter with particular attention to the underrated aspect of current unbalances occurring due to the DC link voltage fluctuates after the inverter reconfiguration. Capacitor voltage unbalance affects not only the average output voltage of the inverter, but also its performance. In fact, the inverter performance depends on the fluctuating DC-link voltage components rather than on the average DC-link voltage. After a brief analysis of the voltage fluctuation phenomena resulting from fault tolerant configuration and their effect on load current unbalance, the Authors consider different compensating p…

Engineeringbusiness.industryControl reconfigurationFault toleranceTopology (electrical circuits)Hardware_PERFORMANCEANDRELIABILITYPower converterSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricilaw.inventionCompensation (engineering)Fault-toleranceCapacitorControl theorylawPower electronicsHardware_INTEGRATEDCIRCUITSInverterInverterCurrent (fluid)AC motor drivebusinessVoltage2015 AEIT International Annual Conference (AEIT)
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Reducing DC Link Voltage Unbalance in a Fault-Tolerant Inverter

2014

Today, continuous working of power inverter drives is mandatory for several applications. Damages to materials, machines or even risks to human life have to be absolutely avoided. In the literature, fault-tolerant algorithms and architectures to achieve a successful fault handling are investigated. Researchers aim at reducing the number and cost of additional components, improving at the same time the inverter performances under postfault conditions. Cost, post-fault power derating and increasing distortion are usually conflicting requirements. In this paper, a fault-tolerant three phase inverter is presented. A reconfigurable architecture and a novel fault-tolerant algorithm is designed to…

Engineeringbusiness.industryDc link voltageFault current limiterElectronic engineeringInverterFault toleranceSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettricibusinessPower electronics Power converters AC motor drives fault-tolerant Inverter
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Optimization of Delayed-State Kalman-Filter-based Algorithm via Differential Evolution for Sensorless Control of Induction Motors

2010

This paper proposes the employment of the differential evolution (DE) to offline optimize the covariance matrices of a new reduced delayed-state Kalman-filter (DSKF)-based algorithm which estimates the stator-flux linkage components, in the stationary reference frame, to realize sensorless control of induction motors (IMs). The DSKF-based algorithm uses the derivatives of the stator-flux components as mathematical model and the stator-voltage equations as observation model so that only a vector of four variables has to be offline optimized. Numerical results, carried out using a low-speed training test, show that the proposed DE-based approach is very promising and clearly outperforms a cla…

evolutionary algorithms (EAs)induction-motor (IM) drivesvelocity controlspeed sensorlessProportional controlcovariance matricesKalman filteralgorithmsSliding mode controlControl and Systems EngineeringRobustness (computer science)Control theoryAC motor drivesDifferential evolutionoptimization methodsstate estimationElectrical and Electronic EngineeringRobust controlparameter estimationAlgorithmStationary Reference FrameKalman filteringInduction motorMathematics
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