Resources Contact Us Home
PWM inverter

Image Number 13 for United States Patent #4656572.

A PWM inverter in which the maximum three-phase RMS pole-to-pole output voltage is increased, to more efficiently utilize a fixed DC power supply, by generating substantially sinusoidal changing pole voltages having no values within predetermined zones adjacent to each power supply limit, and by switching each pole voltage to a power supply limit for a predetermined number of electrical degrees during each half cycle, resulting in step changes in the pole voltage waveforms from the substantially sinusoidal changing waveform to a fixed power supply limit.

  Recently Added Patents
Real-time RSL monitoring in a web-based application
Antenna tuning on an impedance trajectory
Pyridylphenyl compounds for inflammation and immune-related uses
Photographic printing paper and method of making same
Qualification screening system and screening method thereof, qualification screening device and device under qualification screening
Method and apparatus for sharing virtual workspaces
Liquid crystal display device
  Randomly Featured Patents
Valve assembly for a downhole to remove bore hole subsidence
Impact absorbing strut
Method and system for dynamically determining web resource to be loaded and saving space
Soybean variety XB02R10
Method and apparatus for measuring dimension of photo-mask pattern
Head assembly for guardrail extruder terminal
Method for creating energy sources for a vehicle drive system
Method and apparatus for scan chain with reduced delay penalty
Imaging temperature sensing system
Automated offloading of user-defined functions to a high performance computing system