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多相电机设计分析
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2010-09-16
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This paper presents a fast and accurate brushless dc motor (BLDC) phase variable model for drive system simulations. The developed
model was built based on nonlinear transient finite-element analysis to obtain the inductances, back electromotive force as well as the
cogging torque. The model was implemented in a Simulink environment through the creation of an adjustable inductance component
to account for the dependence of inductances on rotor position. Since no model for BLDC actually exists, the significance of this
work is that it provides an accurate equivalent circuit model of BLDC motors for utilization in simulation environments. Using the
developed model, the sensorless control and the torque ripple control issues were investigated and the simulation results show its practical
effectiveness.
model was built based on nonlinear transient finite-element analysis to obtain the inductances, back electromotive force as well as the
cogging torque. The model was implemented in a Simulink environment through the creation of an adjustable inductance component
to account for the dependence of inductances on rotor position. Since no model for BLDC actually exists, the significance of this
work is that it provides an accurate equivalent circuit model of BLDC motors for utilization in simulation environments. Using the
developed model, the sensorless control and the torque ripple control issues were investigated and the simulation results show its practical
effectiveness.
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