Hyundai Ioniq (AE): Hybrid Motor Control System / Description and operation

Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual / Hybrid Motor System / Hybrid Motor Control System / Description and operation

Description
In a hybrid electric vehicle, HCU (an upper level controller), LDC (power converter), and inverter are integrated in the HPCU. HPCU is located on the left side of the engine compartment.
The inverter provides high-voltage AC current to the two motors (drive motor and HSG) and controls them optimally based on the driving conditions through communication with the HCU.
The inverter also changes the DC current from the high-voltage battery into 3-phase AC current that is required for the operation of the motor.
The inverter receives the torque commend from the HCU to control the motor. The motor acts as a generator during deceleration and braking and changes the 3-phase AC current into the DC current to charge the battery.
Inverter is also called a motor control unit (MCU) from the perspective of a controller.

    Component location1. HPCU (Hybrid Power Control Unit)(LDC+MCU+HCU+Reservoir)2. Hybrid drive motor3. Hybrid starter generator (HSG)4. Electrical radiator5.

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