Urban electric vehicles traction: Achievements and trends

Nuca, Ilie; Todos, Petru; Esanu, Vitalie

doi:10.1109/icepe.2012.6463948

Cited by 21 publications

(2 citation statements)

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“…Also DTC algorithm is simple, robust and inherently speeds sensor-less. The features of direct torque control are specifically more suitable to Electric Vehicles (EV) and traction applications where induction motors are making their mark [5] [6].The problems encountered in conventional DTC are torque ripples, poor low speed region working and variable switching frequency. These problems are more serious at low speed with heavy loads [7].…”

Section: Introductionmentioning

confidence: 99%

Improved Direct Torque Control strategy for Wide Range Speed Control of Induction Motor Drives

Mankad*

2020

IJRTE

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Induction Motor is popular option for most of the drives applications. It has simple construction but complex control. DC motor like decoupled control of induction motor drives similar to Field Oriented control is possible using Direct Torque Control (DTC) method which is very simple control strategy compared to vector control. The DTC strategy is very useful for automobile and traction applications using IM but due to use of hysteresis band controllers, DTC has problems of torque ripples, variable switching frequency and poor low speed performance. Because of these reasons, DTC is used in such applications for high speed range and not for the whole speed range. An improved DTC strategy suitable for wide range speed control is suggested in this paper which is based on a performance index calculated on the basis of what is the value of THD of stator current, value of operating speed and switching frequency. It uses new five level variable width torque hysteresis band controller and two level variable width hysteresis band flux controller along with new hybrid model for stator flux estimation. This improved strategy is designed to maintain simplicity of conventional DTC and give better performance than it. This new strategy is simulated using Matlab/Simulink

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Section: Introductionmentioning

confidence: 99%

Improved Direct Torque Control strategy for Wide Range Speed Control of Induction Motor Drives

Mankad*

2020

IJRTE

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show abstract

“…The both stator and rotor have salient poles and only stator carries winding coils, which are suitable connected to create phase. The magnetic flux is provided by phase current to develop a reluctance torque [8], [9], [10], [11]. The cross-section area of the three phases 12/8 novel conception SRM is shown in the Fig.…”

Section: Introductionmentioning

confidence: 99%