Insulation Life Span of Low-Voltage Electric Motors—A Survey

The use of static frequency converters, which have a high switching frequency, generates voltage pulses with rate change over time. In combination cable and motor impedance, this repetitive overvoltage at the terminals, influencing occurrence partial discharges between conductors, causing degradation insulation electric motors. Understanding effects resulting from converter–electric interaction is essential for developing implementing systems characteristics that support most diverse applications, an operating life under economically viable conditions, promote energy efficiency. With objective, search was carried out in three recognized databases. Duplicate articles were eliminated, 1069 articles, systematically categorized reviewed, 481 discussing causes motors powered by converters. A bibliographic portfolio built evaluated, 230 present results on factors can be used estimating span insulation. structure, historical evolution collected information, authors who conducted research theme, relevance knowledge presented works considered.