Check related parts
| Part | Inspection |
|---|---|
| Wire harness and connector between the inverter and Generator resolver | Check for short circuit between Wire harness and +B side |
| Resolver, Wire harness, connector | Check the resistance including the resolver and Wire harness, resistance between the parts and chassis ground, and connecting condition of the connector |
| Wire harness | Check Wire harness unit for open and short circuit |
Explanation of circuits
The resolver is a sensor that detects the magnetic pole position of the generator rotor. Grasping the magnetic pole position is essential in order to control the generator correctly. The resolver has a built-in stator with a magnetizing coil and two detection coils (S and C) attached. Because the rotor is oval, the gap between the stator and rotor changes as the rotor rotates. Alternating current of a constant frequency flows in the magnetizing coil, and the alternating current is output from the detection coils (S and C) according to the sensor rotor position.
Motor generator control ECU incorporated in Inverter with converter assembly detects the absolute position of the rotor based on the waveform phase and waveform height of the detection coils (S and C). Also, it is used as a speed sensor by calculating the amount of position change by CPU within a predetermined period of time.
Motor generator control ECU incorporated in Inverter with converter assembly monitors the output signals of Generator resolver and detects abnormal.