Investigation of Static Stability of Synchronous Machines with Permanent Magnets
Results from an investigation into the static stability of synchronous machines with permanent magnets on their rotors are presented. Factors causing the machines toose their static stability so that rotor oscillations occur are considered. Special emphasis is placed on the motors operating at a variable frequency of the power network. The effect the parameters of a synchronous machine have on the coefficients for its synchronizing and damping torques is analyzed.