Zhao Yisong

Contactless electrical energy transmission system using separable transformer

Contactless electrical energy transmission becomes more and more attractive for different applications. In this system, the design of the separable transformer is very important. The paper uses the mutual inductance model to analyze the coupling ability of the primary coil and the secondary coil. The investigations are carried out by means of ANSYS simulation and measurements. Through analysis, four factors affecting the output power of the system are presented. So this paper proposes a new method of high coupling coefficient to circle the coil. And simulations on the transformer model based on the new method have been performed. The results indicate the output power of the system is increased by 5% and achieved 87.2%

A novel integrated single phase synchronous generation unit for power transformer local discharge test

The paper reports a novel integration single phase synchronous generator unit for power transformer local discharge test. The integration unit has a same shell and shaft both for the motor and generator. The analysis and design methods of single phase synchronous generator for power transformer local discharge test are mainly discussed and the integration unit test results are shown in the paper

Research of multipolar permanent magnet motor with wide constant power for workover

This paper attempts to present an optimal design strategy and characteristics of multipolar permanent magnet synchronous motor(MPMSM) with wide constant power for workover. The structures of stator lamination, rotor lamination and stator winding are analyzed. And how temperature influences the performance of the motor is presented. Moreover, how to calculate air-gap length and the size of permanent magnet of MPMSM are discussed. The MATLAB is used to design the prototype. And, the computer simulation results of magnetic field of the motor are shown by ANSOFT according to its model. The structure and design method of this motor can be used on common MPMSM.