Sensorless Drive of Brushless Dc Motor Based upon Wavelet Analysis
نویسندگان
چکیده
This study tackles to develop a sensorless drive technique for brushless dc motors (BLDC) by using wavelet theory. Initially a BLDC motor with hall sensors is handled. The simulink model of the motor is established and the simulation performances are obtained. Then BLDC motor’s PWM pulses are produced by DS2201 dSPACE digital signal processing (DSP) rapid control prototyping kit. The time domain input current and induced voltage waveforms are recorded. The wavelet analysis of these waveforms is obtained with an extra emphasis on commutation intervals. Finally an algorithm is developed to predict the commutation instants without any position sensor.
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