Method and apparatus for operating a plurality of motors with a

Details Method and apparatus for operating a plurality of motors with a Method and apparatus for operating a plurality of motors with a

1996-10-18

2000-10-17

Nappi, Robert E.

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

G10D 300

Patent

active

061336998

ABSTRACT:
A system for operating a plurality of motors with a single controller is disclosed. This system includes a first motor, a second motor that is matched to the first motor but has a lower power rating than the first motor and a controller electrically driving the first and second motors with a modulated voltage at one frequency selected from one or more frequencies over a complete range of frequencies. The controller generates a frequency of the modulated voltage from the range of frequencies which is proportional to the desired speed for the first and second motors. A method for building such a system is also disclosed. This system and method have particular application to HVAC systems.

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