A continuous energy-efficiency optimization controller for field-orientation induction motor drives
Keywords:energy efficiency, power loss, filtering, adaptive search, dynamic operation
The current paper discusses the adaptive choice of a filter time constant for filtering the steady-state flux reference in the energy-efficient control problem of field-orientation induction machines in transient behavior when load and speed conditions are changing taking into account the effect of the main induction saturation. It is shown that by appropriately managing the flux linkage rate of change the energy losses per full operation cycle under torque changes can be significantly reduced compared to the conventional cases. The analysis for the appropriate choice of the filter time constant as a fraction of the rotor time constant is based on a numerical study and simulation results for three different induction machines with different rated powers.
Bazzi, A., & Krein, P. (2009). A Survey of real-time power-loss minimizers for induction motors. IEEE Electric Ship Technologies Symposium, ESTS 2009. 98-106.
Diachenko, G. G., & Aziukovskyi, O. O. (2020). Review of methods for energy-efficiency improvement in induction machines. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 1.
Windisch, Th., & Hofmann, W. (2018). A novel approach to MTPA tracking control of AC drives in vehicle propulsion systems. IEEE Transactions on Vehicular Technology, 67(10), 9294-9302.
Plathottam, S. J., & Salehfar, H. (2017). Transient energy efficiency analysis of field oriented induction machines. IEEE Access, 5, 20545-20556.
Klenke, F. & Hoffmann, W. (2011). Energy-efficient control of induction motor servo drives with optimized motion and flux trajectories. Proceedings of the 14th European Conference on Power Electronics and Applications, 1-7.
Diachenko, G., Aziukovskyi, O., Rogoza, M., & Yakimets, S. (2019). Optimal field-oriented control of an induction motor for loss minimization in dynamic operation. 2019 International Conference on Modern Electrical and Energy Systems (MEES), 94-97. Kremenchuk, Ukraine.
Diachenko, G., & Schullerus, G. (2015). Simple dynamic energy efficient field oriented control in induction motors. Proceeding of the 18th International Symposium on Power Electronics. Novi Sad, Serbia.