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
Automated solar collector installation design including ability to define heterogeneous design preferences
Dual source mass spectrometry system
Sensor interface engineering
Engineered magnetic layer with improved perpendicular anisotropy using glassing agents for spintronic applications
Ion generation using wetted porous material
Reduced sorbent utilization for circulating dry scrubbers
Integrated circuits with magnetic core inductors and methods of fabrications thereof
  Randomly Featured Patents
Granular binding agent for pellets
Radar device with overlapping short and long range sensors
Removal of mercury from natural gas
Process for the preparation of fuel kernels
Bullet pen
Electrophotographic process for printing a plurality of copies
Multiplexer controlling absorption of delay fluctuation on individual transmission path
Clip-on pipe hanging clamp
Clutch-brake assembly
Digital radio receiver