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This paper details the design of high-speed permanent magnet machine made of amorphous alloy core. The motor is rated as 15kW, and base speed is 20000rpm. A multidisciplinary approach is used to optimize the machine. The select of pole-slot numbers is presented in this paper. The effect of converter switching frequency on the machine is analyzed. Meanwhile, the mechanical properties of rotor is analyzed...
Characteristics and application of multi-phase space vector PWM (SVPWM) technology based on multi-phase permanent magnet synchronous motor (PMSM) variable speed system with high performance are presented, and experimental performances for motor and inverter are evaluated. The special PWM-Cycle of each interregnum for field oriented control (FOC) is be analyzed, and the improved strategies for performances...
A new analytical technique for axial flux PM machines is introduced in this paper. The basic principles of the new technique are explored, and the differences between radial and axial flux PM machines is discussed. Then calculation program based on MATLAB language is finished. The acoustic noise for 5 kW, 22-poles axial flux surface magnet disc type machine with single-rotor-double-stator is calculated...
Calculation of electromagnetic vibration and noise for disk permanent magnet synchronous machines (DPMSM) by using the finite element method (FEM) is presented in this paper. The pulse measuring system produced by the Danish B&K company for noise and vibration is used to measure a DPMSM in a anechoic chamber. Finally, both calculating and measuring results are analyzed, and the acoustic source...
The general methods of analysis and study for multi-phase permanent magnet synchronous motor (PMSM) variety speed system based on the vector space decomposition theory are discussed in this paper. Furthermore, the reliability of the system is discussed and a fault-tolerant compensation strategy purposed forming the revolving magnetic field in order to solve the system occurred familiar faults is also...
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