عنوان المقالة:التشغيل العلاجي للمحركات المتزامنة ذات المغناطيس الدائم الخالية من الفرشاة المشتقة باستخدام التحكم الموجه تحت خطأ مع الحد الأدنى من التموج “Remedial Operation of Brushless Permanent Magnet Synchronous Motors Derived by Field Oriented Control under Fault with Minimum Ripple
In critical systems such as transportation, aerospace,
medical, military and nuclear power plants, the faults are
unwanted. They lead to loss of the human life and capital. In
these systems, the reliability of the drive is very important. This
paper is addressed this problem and suggested two models to
solve it. The first model doesn’t contain any special tools to
improve the torque ripples and THD. The second model contains
2PI current controllers to improve the performance at fault and
at remedial operation. One is for the torque and the other is 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 inside the machine and drive system such as
temperature and parameters variations. 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
(torque ripples). 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 second controller is
compared to the simulation of first controller to show if the
second controller strong or weak. Matlab simulink is used to
simulate the drive system.
تاريخ النشر
25/12/2012
الناشر
2012 Twentieth International Middle East Power Systems Conference MEPCON
د/ حمدى محمد سليمان حجازى | Dr. Hamdy Mohamed Soliman Hegazy | 6409