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The double saliency and high saturation levels in switched reluctance machines (SRM) pose difficulties in modeling and analyzing the machines. Current distortions due to less model fidelity or machine drive current controls result in variations in simulation accuracy. This paper introduces coupled SRM drive modeling and simulation process that takes account for the machine, drive and loads characteristics...
This paper presents a study on output voltage of a self-excited 8/6 switched reluctance generator (SRG). A nonlinear Matlab/Simulink® model of the machine has been developed and used to determine dynamic behavior of SRG. SRG has been simulated in open loop with fixed conducting angle strategy in low speed range, with variable turn-on angle being basic excitation parameter. A relationship between output...
Individual pitch control (IPC) for wind turbine load reduction in Region 3 operation is improved when wake interaction is considered. The Larsen wake model is applied for composing the rotor wind profile for downstream turbines under wake interaction. The wind profile of the turbine wake was generated by modifying the NREL's TurbSim codes. The state-space models of wind turbine were obtained via linearization...
This study presents bi input-extended Kalman filter (BI-EKF) based speed-sensorless direct torque control (DTC) of induction motors (IMs). For this aim, all states required for the speed-sensorless control system as well as commonly known parameter uncertainties related to stator resistance Rs, rotor resistance R'r, and load torque tL including also viscous friction term have been estimated by using...
An nonlinear simulation model of the Switched Reluctance machine with the operation at four-quadrant founded on MATLAB is presented. The simulation of the prototype with three given rotor speeds and four different loads are made. The simulated results on the rotor speed curves, the rotor speed ascending time and the phase current waveforms are given. It is shown that the operation of the Switched...
This paper presents the models of a five-phase interior permanent magnet machine (IPM) feeding a rectifier resistive load. The model predicts the performance of a machine with a non-integer number of stator slots per pole. Using the stationary and rotor reference frames, the approximate diode switching functions are derived. Then harmonic balance technique is used to obtain the steady state average...
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