Electricity: motive power systems – Induction motor systems – Braking
Patent
1986-10-27
1987-07-07
Beha, Jr., William H.
Electricity: motive power systems
Induction motor systems
Braking
318762, 318803, 318811, H02P 318
Patent
active
046789804
ABSTRACT:
The voltage in a converter 20 is compared with a reference voltage to detect an input power failure, in response to which a motor driven by the converter is automatically decelerated in accordance with a stored signal pattern/speed reduction curve such that the energy regenerated by the motor is equal to its power consumption. The DC bus voltage of the converter is thus maintained substantially constant during the regenerative braking of the motor, and it is promptly halted without resort to any mechanical braking unit.
REFERENCES:
patent: 4445167 (1984-04-01), Okado
patent: 4506766 (1985-03-01), Watanabe
patent: 4620296 (1986-10-01), Siemon
Chonan Katsuhiko
Kato Masayuki
Sugimoto Shigeyuki
Beha Jr. William H.
Mitsubishi Denki & Kabushiki Kaisha
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