Method and apparatus for operating a plurality of motors with a single controller
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United States of America Patent
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-
Oct 17, 2000
Grant Date -
N/A
app pub date -
Oct 18, 1996
filing date -
Jan 19, 1996
priority date (Note) -
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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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