Title :
Magnetic analysis and design method for solid rotor induction motors based on directly coupled field-circuit
Author :
Daqiang, Bi ; Xiangheng, Wang ; Decheng, Li
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
A new method is presented for analysis and design of solid rotor induction motors in this paper. The main idea is illustrated as follows. Based on the terminal voltage as known condition and considering the end effect, a field-circuit directly coupled mathematical model of solid rotor motors is set up under sine stable condition. The method treats all the nodal potential and three currents of stator windings as unknown variables. By means of the results of the electromagnetic field analysis, the electromagnetic torque can be directly calculated by the numerical method, further other performances are calculated. The new method not only avoids the reiteration of terminal voltage, which is needed in the finite element method using current resource as known condition, but also cuts the complicated calculation of rotor parameters, which must be used in the equivalent circuit method. The finite element method is embedded in the design program so the accuracy of calculation is improved and the design programmer is adapted to solid rotor induction motors with deferent structure. The practical applications validate the new method
Keywords :
electromagnetic fields; finite element analysis; induction motors; machine theory; rotors; stators; torque; current resource; design program; directly coupled field-circuit; electromagnetic field analysis; electromagnetic torque; field-circuit directly coupled mathematical model; finite element method; magnetic analysis; nodal potential; sine stable condition; solid rotor induction motors; solid rotor motors; stator winding currents; terminal voltage; Couplings; Design methodology; Electromagnetic fields; Finite element methods; Induction motors; Magnetic analysis; Mathematical model; Rotors; Solids; Voltage;
Conference_Titel :
Power Electronics and Motion Control Conference, 2000. Proceedings. IPEMC 2000. The Third International
Conference_Location :
Beijing
Print_ISBN :
7-80003-464-X
DOI :
10.1109/IPEMC.2000.883040