Starting transients in slip energy recovery induction motor drives. II. Flowchart and performance

For Pt.I, see ibid., vol.7, no.1, p.238-44 (1992). The authors present a flowchart for the solution of the system equations developed in part I and present detailed simulation results, backed up with a detailed set of experimental and theoretical results, to give insight into the expected behavior of the drive. The starting resistor allows the peak motor torque to be developed at starting or for the starting currents to be limited to a prespecified value. The transients associated with the initial connection of the inverter can be limited by the appropriate choice of the inverter firing angle. A transient occurs when the resistor is finally disconnected because of the removal of a parallel current path. Both the overlap in the rotor rectifier and the harmonics reflected by the inverter have been included in the modeling and the computer program. This removes the need for correction factors to be used in the design of a practical drive