Research Using Modular Resistive Power Load Blocks for Frequent Starting of Wound Rotor Induction Motor, Used in High Power Testing Laboratories

Based on the fact that rheostatic starting, the most common starting method, is specific to wound rotor induction motor, but has a number of distinct disadvantages, this article presents a new modular resistive power load blocks design, used in rheostatic starters of wound rotor induction motor. Soft starters (static converters) or rheostatic starters are used to start wound rotor induction motors. The special design consists in the fact that the resistor elements are arranged by welding in such a way as to eliminate the inductive phenomenon and to eliminate the multiple connections with screws. Another new feature is the use of austenitic stainless steel as the resistor material, which is suitable for the frequent start-ups typical of High Power Test Laboratories.