Resources Contact Us Home
Dual bridge matrix converter

Image Number 6 for United States Patent #6995992.

A dual bridge matrix converter has a line-side converter with controllable switches that receives AC power and provides unidirectional power to high and low DC link lines, and a load-side converter which receives the power from the DC link lines and provides AC power to output lines. A clamp circuit is connected across the DC link lines and includes a series connected diode and a capacitor. Negative DC link current will be conducted through the clamp diode to charge the clamp capacitor to avoid voltage spikes on the DC link lines. A controllable switch may be connected in parallel with the clamp diode and is turned on when the voltage across the clamp capacitor is above a threshold that is greater than the normal peak-to-peak AC input voltage. The switch is turned off when the voltage across the clamp capacitor is lower than the threshold voltage.

  Recently Added Patents
Disk-based storage device having read channel memory that is selectively accessible to disk controller
Modular utility rack
Shape based similarity of continuous wave doppler images
Resist composition and method for producing resist pattern
Rupture resistant system
System and method for seamlessly increasing download throughput
Controlling access to resources on a network
  Randomly Featured Patents
Systems and methods for unification of local and remote resources over a network
Method for prevention or treatment of acute allograft rejection and a pharmaceutical composition therefor
Illustration supported P2P media content streaming
Information recording device, information recording method, and information recording program
Leg sling
Single use ink cup holder and hand tray
Data transmitting and receiving method and apparatus thereof
Method and apparatus for securing welding torch components
Spindle motor having a deep-drawn baseplate
Electrocoagulation printing ink