Efficiency improvement of electric vehicles by regenerative braking
Conference
·
OSTI ID:6652919
Generally in electric vehicles regenerative braking is incorporated to increase urban driving range on a single charge and to get the same brake torque as engine brake. An analysis of the regenerative operation by thyristor chopper control is described. Firstly, to clarify regenerative efficiency, the calculation of various losses such as commutation loss and thyristor loss which arises at the braking mode is discussed. The regenerative efficiency calculated from the above losses agrees closely with test results. Secondly, a newly developed automatic field control (AFC) regenerative braking system is introduced. This AFC regenerative control system uses a shunt motor, the field current is controlled inversely proportional to motor speed and regenerative operation is obtainable by low motor speed. This system is suitable for electric vehicles. Thirdly, it is noted that utilizing this AFC regenerative brake control, actual urban driving range can be increased by approximately 16%.
- OSTI ID:
- 6652919
- Report Number(s):
- CONF-780208-80
- Country of Publication:
- United States
- Language:
- English
Similar Records
Brake blending strategy for a hybrid vehicle
Electric vehicle regenerative antiskid braking and traction control system
Electric vehicle regenerative antiskid braking and traction control system
Patent
·
Mon Dec 04 23:00:00 EST 2000
·
OSTI ID:873419
Electric vehicle regenerative antiskid braking and traction control system
Patent
·
Tue Sep 12 00:00:00 EDT 1995
·
OSTI ID:106678
Electric vehicle regenerative antiskid braking and traction control system
Patent
·
Sat Dec 31 23:00:00 EST 1994
·
OSTI ID:870066