Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Energy conservation circuit and method for use with multi-phase motors used to power a variable load










Image Number 6 for United States Patent #6091218.

An energy conserving apparatus and method are disclosed. The apparatus is used for conserving power supplied to a multi-phase motor used to power a compressor having a high pressure output line. The motor has a plurality of voltage input lines for connection to receive a multi-phase input voltage. The apparatus includes a monitor for connection to monitor a parameter of the high pressure output line. A plurality of voltage limiting circuits in respective ones of the voltage input lines limit a voltage on the input lines to below selectable voltage levels in response to a control signal. A control circuit is connected to the monitor. The control circuit has a plurality of discrete programmed output levels to provide the control signal to the voltage limiting circuits. Each output level corresponds to a range of the parameter values of the high pressure output line, whereby the voltage limiting circuits limit the input voltage in discrete increments in relation to the parameter values in said high pressure output line. The monitored parameter in the case of a gas/fluid compressor may be a pressure or a temperature in the high pressure output line. The control circuit controls the timing for transitions between discrete voltage levels.








 
 
  Recently Added Patents
Transfer formulas
Image reproduction system and image reproduction processing program
6-O-substituted benzoxazole and benzothiazole compounds and methods of inhibiting CSF-1R signaling
Light fixture
Method for preparing a .beta.-SiAlON phosphor
Handling errors in a data processing system
Visualization of information associated with applications in user interfaces
  Randomly Featured Patents
Dowel with rocker, cast in a single piece, and its method of casting
Method for determining the size of tubular pipe to be inserted in a borehole
Toothbrush cover
Eye gazing imaging for video communications
Grip-head handle
Stabilizer for cervical collar
Method of driving liquid crystal display panel
Intake valve rocker arms of certain six cylinder internal combustion engines
Process for separating a catalyst from a liquid
Recording process and a recording liquid thereof