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Your search keyword '"Huang, Yunkai"' showing total 70 results
Start Over Author "Huang, Yunkai" Publisher institute of electrical and electronics engineers (ieee)
70 results on '"Huang, Yunkai"'

39. Fuzzy Control for Flux Weakening of Hybrid Exciting Synchronous Motor Based on Particle Swarm Optimization Algorithm

Author

Heyun Lin, Mingming Huang, Ping Jin, Yujing Guo, and Huang Yunkai

Subjects
Steady state (electronics), Steady state, Computer science, Particle swarm optimization, Fuzzy control system, Electrical and Electronic Engineering, Synchronous motor, Algorithm, Excitation, Copper loss, Magnetic flux, Electronic, Optical and Magnetic Materials, Machine control
Abstract

This paper proposes a fuzzy control method combining with particle swarm optimization (PSO) algorithm for the flux weakening control of hybrid excitation synchronous motor (HESM). A total copper loss minimization model is established to determine the optimal field current, d-axis and q-axis currents in low speed region. In order to improve the dynamic characteristic and decrease the harmful influence of parameters variation on HESM's operation, a fuzzy control method is employed in high speed rang. Meanwhile, to improve the efficiency, the PSO algorithm is applied to current optimization during steady state operation. Simulation results show that higher efficiency HESM system can be implemented by adopting the proposed control method.

Published
2012

40. A New Formulation of Anisotropic Equivalent Conductivity in Laminations

Author

Huang Yunkai, Sun Xikai, Wang Jian, and Lin Heyun

Subjects
Electromagnetic field, Materials science, Mechanics, Conductivity, Finite element method, Electronic, Optical and Magnetic Materials, law.invention, Lamination (geology), Nuclear magnetic resonance, Magnetic core, law, Eddy current, Tensor, Electrical and Electronic Engineering, Anisotropy
Abstract

A new and simple formulation of equivalent conductivity in the direction normal to the laminations is derived by analyzing and comparing the electromagnetic fields and the eddy current losses in a laminated iron core and a single lamination. Then the anisotropic conductivity tensor is updated. The conductivity formulation can make it easier to calculate numerically three-dimensional eddy current fields in laminations with good accuracy. The validity of the formulation is verified by comparing the eddy current losses, computed with the finite element method using the proposed conductivity formulation and the long known formula, in an analyzed model.

Published
2011

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