Control of regeneration energy from an electric motor

Details Control of regeneration energy from an electric motor Control of regeneration energy from an electric motor

1994-06-27

2000-09-19

Masih, Karen

Electricity: motive power systems

Braking

Dynamic braking

318362, 318375, 318382, H02P 314

Patent

active

061217409

ABSTRACT:
A method and apparatus are disclosed for controlling regenerative energy from an induction motor. The induction motor is connected to a battery, which is intended to capture the regenerative energy of the induction motor. Normally, the induction motor is operated at peak efficiency, to capture as much energy as possible. However, when the battery becomes nearly fully charged, the induction motor is operated at reduced efficiency to prevent overcharging of the battery. The operating point of reduced efficiency of the induction motor is a point at which electrical losses are relatively more located in the stator of the motor than in the rotor of the motor. The stator of an induction motor is generally better cooled than the rotor.

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Kirschen et al., "Optimal Efficiency Control of an Induction Motor Drive", IEEE-PES Transactions on Energy Conversion, Mar. 1987.

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