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Most of magnetic encoder ICs are on-axis, and they are generally suitable for inner rotor PMSM, sometimes used in external rotor PMSM. However, in some special occasions, these ICs are not used for the difficulty of mounting, for example, there is an external rotor PMSM with a hollow shaft, which is convenient for passing the control wire. It is difficult to mount these encoder ICs, because there...
According to the requirement of the power factor and the dynamic performance of the asynchronous machine tool field, an asynchronous motor inverter with active power factor correction is proposed. The proposed inverter is a 3kW asynchronous motor drive control platform. At first, the proposed single phase converter with APFC is realized by using the MATLAB/SIMULINK. Then, the boost APFC is designed...
Magnetic encoder based on giant magnetoresistance effect, also known as GMR-based magnetic encoder, has several distinct advantages over the traditional Hall-effect magnetic encoder such as its simpler structure, higher resolution and sensitivity as well as a better tolerance toward extreme working environment. This paper gives a detail design scheme of a GMR-based magnetic encoder. Finite element...
In this paper, a 5kW novel multistage axial-flux permanent magnet machine (M-AFPM) is analyzed. As a key part of the machine, stator core of silicon steel and SMC are studied by 3D finite element method (FEM) respectively. No-load, full-load, magnetic field distribution, core loss, etc. are calculated. FEM result indicates that SMC-materials have almost equal influence on EMF, magnetic field distribution...
In this paper, a 5kW novel modular multistage axial-flux permanent magnet machine (MM-AFPM) for EVs is analyzed. As key parts of the motor, electrician-ferrite teeth supports and SMC teeth supports are studied by 3D finite element method (FEM) respectively. No-load, full-load, harmonics, magnetic field distribution, etc. are calculated. FEM result indicates that SMC-materials have great advantages...
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