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Cost minimizing of the electrical machine drives is more attractive for low cost applications. The low cost BLDC driver is achieved by the reduction of switch device, cost down of control, and saving of hall and current sensors. In this paper, a simple position sensorless control strategy for four-switch three-phase BLDC motor drives using single current sensor is proposed. The whole working process...
The efficiency of the electric drive system in a Hybrid Electric Vehicle plays a significant role in overall hybrid propulsion system efficiency and influences design choices for other mechanical components in the system. Increasing the DC bus voltage is thought to improve overall powertrain efficiency. In this paper, models are developed to predict the effect of DC bus voltage on the power loss in...
This paper proposes a model of brushless dc motor drive considering behaviour of the motor during commutation and waveform of backemf, for dynamic simulation of Electromechanical Actuator (EMA) under MATLAB/Simulink environment. Ideally trapezoidal backemf is considered in simulations for BLDC motor, which gives a constant torque. Practically, torque ripple exist, mainly due to emf waveform imperfections,...
In this paper, stator-flux orientation control strategy for the flux-switching permanent magnet (FSPM) motor under two pulse width modulation (PWM) generation modes, namely current hysteresis and voltage space vector, is investigated and implemented. Firstly, the definition of d- and q-axes for the FSPM motor, which is crucial to the mathematic model and control strategy, is highlighted. The fundamental...
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