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There are many disadvantages in the systems which driven by high voltage AC motors. People are looking for the solutions to these problems for many years. In this paper, a novel idea that adopting general low voltage converters supply power to multi-branch permanent magnet synchronous motor (PMSM) is reported. The stator windings of this multi-branch PMSM are designed into multi branches, and these...
A new method to simulate the steady-state magnetic fields of blocking up for induction motor is proposed. The field-circuit coupled model is combined with time-periodic finite element (FE) method to reduce the CPU time. The inductances and resistances of the stator end windings and the rotor end rings are considered in the loop circuit equations. In order to take account of the local magnetic saturation...
Equivalent circuit parameters of doubly fed induction generator (DFIG) play an important role in the estimation of steady state and dynamic performance of wind turbine system. A new method based on magnetic field finite element analysis is proposed to improve the calculation of the DFIG parameters, especially the inductances. The magnetic field excited by the stator or rotor current is exactly divided...
A new type of double-rotor induction machine (DRIM) with inner and outer rotors has the advantage of low leakage inductance and high operation performance. This paper introduces the structure and operation principle of the DRIM. A prototype machine has been designed and built. The magnetic field analysis by means of the MAGNETO software shows that the magnetic field distribution of the DRIM is reasonable...
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