Study about Insulation Evaluation and Diagnosis for Electrical Power Systems of Hybrid vehicle

초록

Different from the conventional car using 24V or 12V for electronic instrument, hybrid vehicle introduced in this paper, which is driven by electrical motors, is under the influences of several hundreds DC/AC Volts supplied from generator connected to CNG internal combustion engine. And also inverter driven electrical motor may invoke some surge transient voltage amounting to several times of service voltage from generator. Therefore, Insulation condition of electrical power system consisting of electrical motor, generator, inverter and cable is very important factor to maintain the performance of Hibrid car in good condition and preventing some energy losses. This paper has investigated the insulation diagnostic and evaluating technique for electical power systems of hybrid vehicle using various figures such as partial discharge or spark occurring inside or outside electrical power apparatuses. They will result in the awesome electrical breakdown eventually.