Elevator motor drive tolerant of an irregular power source
A hoist motor for an elevator is continuously driven from an irregular power supply. A regenerative drive delivers power between the power supply and the hoist motor. A controller measures a power supply voltage in response to a detected change in the power supply voltage and controls the regenerati...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A hoist motor for an elevator is continuously driven from an irregular power supply. A regenerative drive delivers power between the power supply and the hoist motor. A controller measures a power supply voltage in response to a detected change in the power supply voltage and controls the regenerative drive to adjust a nominal motion profile of the elevator in proportion with an adjustment ratio of the measured power supply voltage to a normal power supply voltage. |
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