Resources Contact Us Home
Power charging assembly and method that includes a low voltage electrical device operable with pulse width modulation (PWM) control

Image Number 9 for United States Patent #8129951.

A power charging assembly and methods are provided to provide a pre-charge low-current state, a steady-state, high-current charging state, and an unconnect state for an electrical load of an electrical propulsion system in a hybrid electrical vehicle (HEV). The power charging assembly includes a positive contactor device, a negative contactor device, and a non-contactor device means. The rate at which that electrical load is pre-charged may be effectively controlled by using a pulse-width modulated (PWM) signal received by the non-contactor device means. A current-only carrying positive or negative contactor may be configured with the non-contactor device means to further prevent electrical arcing of the contacts of the positive and the negative contactor during power charging assembly operation.

  Recently Added Patents
Monitoring heap in real-time by a mobile agent to assess performance of virtual machine
Phase locking loop
Nano-pigment inkjet ink composition that has a low odor and is environmentally-friendly
Wireless subscriber managing storage of HARQ packets
Assigning runtime artifacts to software components
Transaction finance processing system and approach
Reduction of HMF ethers with metal catalyst
  Randomly Featured Patents
Method for the feed of cellulose chips during the continuous cooking of cellulose
Alkylating agent and 1,4-addition process of an alkyl group onto an .alpha.,.beta.-unsaturated ketone compound
Electro-optical removal of plastic layer bonded to a metal tube
Integrated cell balancing system, method, and computer program for multi-cell batteries
Snap action slide switch with wiping action
Line defect detection circuit for detecting weak line
Miscible, multi-component, diesel fuels and methods of bio-oil transformation
System and method for adjusting color reproduction
Method and system for calibrating input voltage of voltage controlled oscillator and digital interface used for calibrating input voltage
Two-cylinder viscous liquid pump with pipe switch