VSD CONTROL
First Claim
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1. A method for operating a variable speed drive to power a first load from a power source simultaneously powering a second load, the method comprising:
- monitoring a monitored AC reactive power comprising a second AC reactive power of the second load; and
responsive to the monitored AC reactive power, controlling the variable speed drive to maintain a first AC reactive power of the variable speed drive and first load opposite the second AC reactive power.
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Abstract
A variable speed drive control system operates a variable speed drive to power a first load from a power source simultaneously powering a second load. An AC reactive power is monitored which may comprise or consist of an AC reactive power of the second load. Responsive to the monitored AC reactive power, the variable speed drive is controlled to counter the AC reactive power of the second load.
9 Citations
9 Claims
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1. A method for operating a variable speed drive to power a first load from a power source simultaneously powering a second load, the method comprising:
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monitoring a monitored AC reactive power comprising a second AC reactive power of the second load; and
responsive to the monitored AC reactive power, controlling the variable speed drive to maintain a first AC reactive power of the variable speed drive and first load opposite the second AC reactive power. - View Dependent Claims (2, 3)
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4. A method for operating a variable speed drive to power a compressor motor from a power source simultaneously powering an additional load including at least one additional motor, the method comprising:
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monitoring a monitored AC reactive power including an AC reactive power of the additional load; and
responsive to the monitored AC reactive power, controlling the variable speed drive to maintain an AC reactive power of the variable speed drive and compressor motor opposite the AC reactive power of the additional load. - View Dependent Claims (5)
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6. A variable speed drive system for powering a first load from a source also powering a second load, the system comprising:
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means for monitoring a monitored AC reactive power comprising an AC reactive power of the second load; and
means for controlling the variable speed drive responsive to the monitored AC reactive power to maintain an AC reactive power of the variable speed drive and first load opposite the AC reactive power of the second load. - View Dependent Claims (7, 8, 9)
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Specification