Influence of the hybrid-driven method on the electromagnetic properties of an electromagnetic motor

摘要

In the light of an electromagnetic motor driving system, electromagnetic conversion characteristics and structural principles were described. Electromagnetic drive and hybrid-driven method were proposed; the mathematical models describing the two drive systems which have adopted the magnetic circuit analysis method were established, starting with a discussion on how the drive system affects the electromagnetic force and air-gap magnetic flux density. Under the same conditions, the electromagnetic drive and hybrid-driven model were, respectively, simulated to reveal the impact on the electromagnetic force and air-gap magnetic flux density due to the different driving modes. Variation of the electromagnetic force with an increasing coil current of two types of drive systems under motor speed control is studied preliminarily. The results have shown that compared to that of the pure electromagnetic drive system, the electromagnetic force of the hybrid drive system was raised from 2198 to 4097a??N, and the air-gap magnetic flux density was increased from 1.048 to 1.393a??T; the electromagnetic characteristics of the magnetically driven motor were improved effectively.