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Determination of Optimum Hysteresis Bandwidth to Improve Electric Machines Operation

Shamsi-Nejad M., Khalghani M. R., Khooban M. H.

Journal of Power Technologies

2013

Vol. 93, nr 4

207--215

Many techniques have been presented for optimizing energy consumption in drive systems to increase efficiency. This paper presents a new method to reduce energy consumption in motor and drive systems. We can achieve an optimal point in term of current THD and switching loss with appropriate determining hysteresis bandwidth. To date, no study has been done in this field. Proposed in this paper are: (i) a proper bandwidth, and (ii) a new index to determine the aforementioned objectives in order to derive an appropriate hysteresis bandwidth.

Optimal Intelligent Control for HVAC Systems

Khooban M. H., Soltanpour M. R., Abadie D. N. M., Esfahani Z.

Journal of Power Technologies

2012

Vol. 92, nr 3

192--200

In this paper a novel Optimal Fuzzy Proportional-Integral-Derivative Controller (OFPIDC) is designed for controlling the air supply pressure of Heating, Ventilation and Air-Conditioning (HVAC) system. The parameters of input membership functions, output polynomial functions of first-order Sugeno, and PID controller coefficients are optimized simultaneously by random inertia weight Particle Swarm Optimization (RNW-PSO). Simulation results show the superiority of the proposed controller than similar non-optimal fuzzy controller.