Traditionally, the IPM motor drive is controlled by combining a flux weakening plus maximum torque per ampere (MTPA) block, a lookup table block, and a current controller block. However, the reference commands generated from currently available methods are inaccurate, which causes reduced motor efficiency. Thus, the neural networks (NN) allow for the optimal performance of internal permanent magnetic (IPM) motors.
Researchers at The University of Alabama have developed neural networks and adaptive dynamic programming as a means of improving the efficiency of electric vehicles (EV) and hybrid (HEV) vehicles. Evs and HEVs use IPM motors which are controlled by reference commands. The NNs in this technology allow for the most efficient IPM motor control, the identification of motor parameters in real-time operating conditions, and the replacement of the traditional lookup methods which allow for increased accuracy in mapping currents to motor parameters.
- Improves efficiency.
- Improves motor size and reliability.
- Reduces harmonics and torque oscillation.
- Maximizes motor output torque is enhanced.
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