B.A.E.™ Hybrid Propulsion System
Page 41
B.A.E.™ HYBRID PROPULSION SYSTEM
Hybrid Electric Vehicle
(HEV) Propulsion System
Operation
In a HEV propulsion system, the
engine converts the energy
contained in the fuel into mechanical
energy. The Alternating Current
Traction Generator (ACTG)
converts this mechanical energy
into electrical energy at the proper
voltage and current to charge the
traction batteries and to provide
power for the Alternating Current
Traction Motor (ACTM). The
Propulsion Control System (PCS)
converts the output voltage from the
ACTG, and lithium-Ion energy
storage system (ESS), to AC
voltage for the ACTM. In addition to
this, the HEV provides the ability to
stop the vehicle by using
regenerative energy. This is the
transfer of kinetic energy of the
moving vehicle into energy which is
stored in the ESS for later use.
Refer to your BAE™ service manual
for further information on the
HybriDrive® system.
Propulsion Control
System (PCS)
The Hybrid Propulsion System has
an electronic protection system that
is activated whenever a fault is
detected. The Propulsion Control
System (PCS) automatically
protects the propulsion system from
various fault conditions such as
component over temperature,
over-voltage, under-voltage,
over-charging, under-charging and
over speed.
Alternating Current
Traction Generator
(ACTG)
The ACTG converts the mechanical
energy of the engine into electrical
energy for the propulsion system.
The Generator is coupled directly to
the engine flywheel. The generator
operates between 800 and 2000
rpm. The maximum transient power
attainable from the generator is over
170 kilowatts.
The output energy from the
Generator is modified in the PCS
and is connected in parallel with the
Energy Storage System. In this way,
both the ESS and Generator can
provide energy to the Traction
Motor.
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