TRANSIENT ELECTRICAL TORQUES IN SOLID IRON ROTOR TURBOGENERATORS.
Abstract
The analytical basis for the calculation of electromagnetic torque is reviewed and a method is presented for determining the order of andparameters for a machine model which can be used for the accurate calculation of transient electromagnetic torque.The method is demonstrated and evaluated by comparison of simulation results. To accomplish this, a validated benchmark model is chosen and a reduced model is derived therefrom. The accuracy of the reduced model is established for a three phase fault, out-of-phase synchronization, a fast reclosing sequence and selected unbalanced fault situations. The effects of saturation representation and excitation system response on the accuracy of the reduced model are also investigated. It is shown that a relatively low order model can be used for transient electromagnetic torque calculation and that those refinements to the model which take into account the effects of unequal mutual inductances are not required if electromagnetic torque is the variable of interest.
Degree
Ph.D.
Subject Area
Electrical engineering|Energy
Off-Campus Purdue Users:
To access this dissertation, please log in to our
proxy server.