交流电机由电磁力激发的参,强联合共振

ON THE COMBINED PARAMETRIC AND FORCED RESONAN CES IN AN ALTERNATING CURRENT MACHINE EXCITED BY ELECTROMAGNETIC FORCES

In this paper, the unified mathematical system is suggested for coupling the rotor vibration equations and the steady-state circuit equation. An analytical solution is derived, and amplitude curves of the combined resonances are obtained. The theoretical results have shown in good agreement with the experimental results.The mathematical model which has been verified by the experiment is used to analyse the effect of each parameter on the combined resonance and to seek ways to eliminate it. Some useful results are obtained, which have important applications in analysing the coupled mechanical and electrical vibrations of high-output turbogenerators.