Scalar control of induction motors using voltage sourced inverters

Abstract

Inverter sourced induction motor drives have undergone considerable development and refinement in the past five years, and many very sophisticated drives with excellent performance characteristics have evolved. However, the conventional voltage sourced induction motor drive operating in an open loop configuration, despite its drawbacks, still remains the most popular form of motor drive in use. The continued support for this type of control primarily stems from their simplicity and ruggedness - few parameters need be adjusted and no mechanical transducers are required. In this work techniques have been developed to markedly improve the performance characteristic of voltage sourced PWM drives, notably the efficiency and the speed regulation, without adding to the complexity of the hardware or setup requirements......