Abstract
Many dimensions have to be determined when designing a motor, but the main dimensions plays an important role in this progress. Once it has been done, other dimensions can generally be determined. The working characteristic of motor and operation reliability and main dimensions and their ratio have close relations.
Resistance and reactance. is an important parameter of the motor. The size of the resistance not only affect motors economy value but also have a close relationship with the motors running performance . The size of the circuit reactance winding has an great impact on the designing of economy and performance. Therefore the selection and calculation of these parameters are extremely important.
When the main dimensions, air gap and the stator windings and core design work is good, it has to do the working performance of the calculation and starting performance calculation.. Three-phase asynchronous motor start-up performance mainly refers to the starting torque and starting current to the corresponding ratings .Three-phase asynchronous motor starts depends on the characteristic of motor parameters
Keywords: Motor , Motor parameters,Work performance ,Start performance