Rotating electric machine for electric vehicle, drive control device and insulation diagnosis method
First Claim
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1. A rotating electric machine for an electric vehicle, installed in a vehicle and driven by an inverter power source, comprising:
- a partial discharge measuring device that measures partial discharges occurring in insulated areas between windings, between phases and between the rotating electric machine and a ground, whereinthe partial discharge measuring device is configured with a temperature sensor that measures a temperature inside the rotating electric machine and an electromagnetic capacitance connected to ends of two output lines extending from the temperature sensor, with the output lines extending from the temperature sensor wound around an entire circumference of a stator core over an area near a coil end of the stator coil.
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Abstract
A rotating electric machine for an electric vehicle, installed in a vehicle and driven by an inverter power source, includes: a partial discharge measuring device that measures partial discharges occurring in insulated areas between windings, between phases and between the rotating electric machine and a ground.
27 Citations
17 Claims
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1. A rotating electric machine for an electric vehicle, installed in a vehicle and driven by an inverter power source, comprising:
a partial discharge measuring device that measures partial discharges occurring in insulated areas between windings, between phases and between the rotating electric machine and a ground, wherein the partial discharge measuring device is configured with a temperature sensor that measures a temperature inside the rotating electric machine and an electromagnetic capacitance connected to ends of two output lines extending from the temperature sensor, with the output lines extending from the temperature sensor wound around an entire circumference of a stator core over an area near a coil end of the stator coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An insulation diagnosis method adopted in conjunction with a rotating electric machine for an electric vehicle, comprising:
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measuring, via a partial discharge measuring device, a partial discharge occurring in an insulated area of the rotating electric machine for an electric vehicle, which is installed in a vehicle and driven with an inverter power source, the insulating area being between windings or between phases at the rotating electric machine or between the rotating electric machine and a ground; extracting a partial discharge signal from an output signal provided from the partial discharge measuring device; detecting a partial discharge inception voltage based upon the extracted partial discharge signal; executing insulation diagnosis for the rotating electric machine for an electric vehicle based upon a change occurring in the partial discharge inception voltage over time, and configuring the partial discharge measuring device with a temperature sensor that measures a temperature inside the rotating electric machine and an electromagnetic capacitance connected to ends of two output lines extending from the temperature sensor, with the output lines extending from the temperature sensor wound around an entire circumference of a stator core over an area near a coil end of the stator coil.
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Specification