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
Coaxial cable port terminator
Apparatus and method for communicating data using sequential response protocol
Resin sealing type semiconductor device and method of manufacturing the same, and lead frame
Strains of Lactobacillus paracasei
Antenna sharing device
3D image display device and driving method thereof
Apparatus for certificate-based cookie security
  Randomly Featured Patents
System and method for a high dynamic range sensitive sensor element or array with gain control
Split corner ell slip-on pipe fitting
System and method for device-based access privilege to an account
Electrostatic capacitance detection circuit and microphone device
Content addressable memory array having flexible priority support
Boronic chalcone derivatives and uses thereof
Method and device for selecting transform matrices for down-sampling DCT image using learning with forgetting algorithm
Multiple resonator component-mountable filter
Data input unit of synchronous semiconductor memory device, and data input method using the same
Expression cassettes for root-preferential expression in plants