Generator controller used in hybrid electric vehicle

Details Generator controller used in hybrid electric vehicle Generator controller used in hybrid electric vehicle

1995-10-19

1998-09-08

Stephan, Steven L.

Electricity: single generator systems

Combined control of generator and driving means

Simultaneous control

318153, 322 39, H02P 1106

Patent

active

058049479

ABSTRACT:
A generator controller used in hybrid electric vehicle. The battery current is sampled and accumulated for T seconds. The obtained accumulated value is used to determine the control target of the generated power. Since the generated power is controlled according to the accumulated current of the battery which fits the battery's characteristic compared to the charged-and-discharged power, the battery's state of charge (SOC) can be more accurately controlled within the target zone. When the SOC of the battery is initially outside the target zone, the SOC is adjusted within the target zone by forcibly discharging or charging the battery. The precision of SOC control can be improved compared to when the SOC of the battery is controlled using the charged-and-discharged power.

REFERENCES:
patent: 5359228 (1994-10-01), Yoshida

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