Theoretical performance upgrading of the E. V. A. electric vehicle by use of a flywheel/battery hybrid power train system
Conference
·
OSTI ID:7278986
The performance improvement that could be realized by an electric vehicle through replacement of the existing electric drive train with one incorporating a flywheel/battery energy source is examined. The vehicle selected for the theoretical power train conversion is the electric sedan marketed by Electric Vehicle Associates (E.V.A.). The hybrid power train proposed, uses a high-energy composite flywheel coupled to a simple, efficient, electro-mechanical transmission. The lead-acid batteries installed by E.V.A. provide the prime power source. Interactive control of battery and/or flywheel drive power is provided by a versatile microprocessor-based power control unit. The flywheel allows efficient recovery of vehicle kinetic energy during braking and provides the energy base required to meet all high power transient demands. The flywheel also stabilizes battery demand at a low average value resulting in improved battery performance through increases in both cycle life and available energy. Due to the hybrid system described here, electric vehicle acceleration and range improvements are predicted to be in excess of 80% for the E.V.A. vehicle when operated in a stop-and-go commuter environment.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7278986
- Report Number(s):
- UCRL-79153; CONF-770430-3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
25 ENERGY STORAGE
250500 -- Energy Storage-- Flywheels
250904 -- Energy Storage-- Batteries-- Other Applications
33 ADVANCED PROPULSION SYSTEMS
330300 -- Advanced Propulsion Systems-- Electric-Powered Systems
330400* -- Advanced Propulsion Systems-- Hybrid Systems
330500 -- Advanced Propulsion Systems-- Flywheel Propulsion
ACCELERATION
CONTROL SYSTEMS
ELECTRIC BATTERIES
ELECTRIC-POWERED VEHICLES
ELECTROCHEMICAL CELLS
ENERGY STORAGE
ENERGY STORAGE SYSTEMS
FEASIBILITY STUDIES
FLYWHEEL ENERGY STORAGE
FLYWHEELS
HYBRID ELECTRIC-POWERED VEHICLES
LEAD-ACID BATTERIES
MACHINE PARTS
MECHANICAL TRANSMISSIONS
RANGE
REGENERATIVE BRAKING
STORAGE
VEHICLES
250500 -- Energy Storage-- Flywheels
250904 -- Energy Storage-- Batteries-- Other Applications
33 ADVANCED PROPULSION SYSTEMS
330300 -- Advanced Propulsion Systems-- Electric-Powered Systems
330400* -- Advanced Propulsion Systems-- Hybrid Systems
330500 -- Advanced Propulsion Systems-- Flywheel Propulsion
ACCELERATION
CONTROL SYSTEMS
ELECTRIC BATTERIES
ELECTRIC-POWERED VEHICLES
ELECTROCHEMICAL CELLS
ENERGY STORAGE
ENERGY STORAGE SYSTEMS
FEASIBILITY STUDIES
FLYWHEEL ENERGY STORAGE
FLYWHEELS
HYBRID ELECTRIC-POWERED VEHICLES
LEAD-ACID BATTERIES
MACHINE PARTS
MECHANICAL TRANSMISSIONS
RANGE
REGENERATIVE BRAKING
STORAGE
VEHICLES