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Some intriguing advantages of permanent-magnet linear synchronous machines (PMLSMs), such as simple structure, high thrust, high efficiency, ease of maintenance, and controller feedback, make it possible to take the place of steam catapults in the future. The conventional PMLSM is renowned for its simple structure and high efficiency, whereby the high reactive power resulted from great leakage inductances...
A 12/10 flux-switching permanent magnet motor (FSPM) is described. Qualitative analysis of magnetic circuit indicates that a connection between stator segments is benefit to motor operation. From the basic principle of flux-weakening speed-extension operation, weaken magnetic factor and speed-extension multiple are calculated. The analysis results show that this kind of motor has higher flux-weakening...
Reliability and precision are key requirements for electric power feeding to vehicles underwater. Transferring electrical energy from a stationary to a moving device must be insulated from the conductive sea water, and the conventional approach of transferring with conductive wires is under critical challenge. This paper examines the possibility of using a revolving transformer for contact-less power...
In order to reduce the interference from stray flux of adjacent bus bars on the error of heavy current transformer (HCT) which always has a large diameter, the interference mechanism was investigated theoretically in details based on magnetic circuit. It was concluded that there were mainly two interference ways that the stray flux affected the error of HCT, and then it was further verified by experiments...
Contact-less electrical energy transmission system (CEET) becomes more and more attractive for various applications. A coreless detachable transformer used for CEET is investigated in this paper. Equivalent circuit model of detachable transformer was established and analyzed. And the flux distribution of the proposed detachable transformer was attained using finite element method (FEM). The flux simulation...
Contact-less electrical energy transmission system has become more and more attractive in power transmission area these years because there is no direct electrical connection or physical contact between the energy transmission system and the power receiver. This paper presents the function principle of contact-less electrical energy transmission systems and new developments. Equivalent circuit model...
Taking a six-phase ten-pole fault tolerance permanent magnetic machine (FTPMM) as an example, its chief elements of wingding self inductance, such as: magnetizing inductance, harmonic leakage inductance, slot opening leakage inductance and slot inner leakage inductance, are got under analyzing the distribution of magnetic flux, and the large inductance is accomplished by adding the leakage of slot...
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