Power electronic interface circuits for batteries and ultracapacitors in electric vehicles and battery storage systems

Patent · Wed Dec 31 23:00:00 EST 1997

OSTI ID:871338

King, Robert Dean ^[1]

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1. Schenectady, NY

A method and apparatus for load leveling of a battery in an electrical power system includes a power regulator coupled to transfer power between a load and a DC link, a battery coupled to the DC link through a first DC-to-DC converter and an auxiliary passive energy storage device coupled to the DC link through a second DC-to-DC converter. The battery is coupled to the passive energy storage device through a unidirectional conducting device whereby the battery can supply power to the DC link through each of the first and second converters when battery voltage exceeds voltage on the passive storage device. When the load comprises a motor capable of operating in a regenerative mode, the converters are adapted for transferring power to the battery and passive storage device. In this form, resistance can be coupled in circuit with the second DC-to-DC converter to dissipate excess regenerative power.

• Research Organization: EG & G IDAHO INC
• DOE Contract Number: AC07-76ID01570
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): US 5710699
• OSTI ID: 871338
• Country of Publication: United States
• Language: English

Related Subjects

/363/318/323/
adapted
apparatus
auxiliary
batteries
battery
battery voltage
capable
circuit
circuits
comprises
conducting
converter
converters
coupled
dc
dc-to-dc
device
device coupled
device whereby
dissipate
electric
electric vehicle
electric vehicles
electrical
electrical power
electronic
energy
energy storage
exceeds
excess
form
interface
leveling
link
load
load leveling
method
mode
motor
motor capable
operating
passive
power
power regulator
regenerative
regulator
resistance
storage
storage device
storage systems
supply
systems
transfer
transferring
ultracapacitors
unidirectional
vehicles
voltage
whereby