عنوان المقالة:تقليل توموجات العزم واخماد التوافقيات لمحرك تزامنى ذو المغناطيس الدائم مقادا بتوجيه المجال Torque ripple minimization, suppress harmonics, and noise of brushless pm synchronous motors derived by field-oriented control
Conventional field oriented control for brushless PM synchronous motor depends upon mathematical model so the
parameters variations, noise, electromagnetic interface, non-sinusoidal flux and harmonics in the motor or in power
converter will cause performance deteriorating of the drive system. They are causing speed oscillations, ripples in
torque, ripples in current and an increase the total harmonics distortion (THD). This paper is addressed these
problems and suggested novel two PI controller for solving these problems. One for the torque and the other for the
flux. The first PI controller is feeding from the torque error between the reference and estimated torques to get new
q-axis current component representing modifier current arises from uncertain things such as earliest problems. This
current will add to reference q-axis current to get robust new q-axis current to satisfy the drive requirement and
solve the torque problem. With robust current, the total harmonic distortion is a decrease but doesn’t reach the best
value so the other PI controller is used to adjust the THD. In this PI controller, the d-axis flux is compared to rotor
permanent magnet flux to solve this problem arises from non-sinusoidal of the magnetic flux. The output of the PI
controller is introduced to the reference d-axis current. The new d-axis current will reach the best value of THD. The
simulation of the proposed controller is compared to the simulation of conventional controller to show the
advantages of the proposed controller. To display the effectiveness of the second PI controller (flux controller), the
result of the new controller is displayed with new PI torque controller only and with new two proposed controller.
MATLAB SIMULINK is used to simulate the drive system.
تاريخ النشر
11/09/2012
الناشر
International Journal of Recent Research and Applied Studies
د/ حمدى محمد سليمان حجازى | Dr. Hamdy Mohamed Soliman Hegazy | 6131