Sonata Plug-in Hybrid main systems
Hybrid Power Control Unit
The Hybrid Power Control Unit (HPCU)
assembly consists of three components: a
Hybrid Control Unit (HCU), an Inverter (Motor
Control Unit (MCU)) as well as a Low-voltage
DC-DC Converter (LDC). The HPCU assembly
contains capacitors which take about 5-10
minutes to discharge after the high-voltage
system is shut down.
Electric Drive Motor
Mounted between the engine and transmission,
the Electric Drive Motor is used for vehicle
propulsion. During deceleration or braking, it
acts as an alternator and charges the HV
battery by converting
the vehicle’s kinetic
energy into electrical energy.
Hybrid Starter Generator (HSG)
The HSG is mounted to the front of the engine
near the intake manifold. It cranks the engine
or starting and acts as a generator when the
HV battery needs charging. As this is one of
the major components of the HV system, its
electrical connection is clearly visible via an
orange HV cable.
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