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  • Weihai Guangtai Airport Equipment Co Ltd
    WGJB 90 solid-state 400 Hz GPUs WGJB series solid state converters change the industrial frequency 380V 50 Hz into 115V /200VAC 400 Hz for aircraft use.
  • Design of Synchro Resolver-to-Digital Converter Based on PXI Bus
    Function unit of Synchro Resolver-to-digital Converter . .... Testing signals voltage is DC 11.8V, and reference source voltage is AC 115v , frequency is 400Hz .
  • Analysis of single-phase rugged resonant DC link inverter
    Full bridge inverter converts pulse voltage into 115V , 400Hz ac voltage. .... Performance specifications of converter are shown as. .... input voltage: 22ovk15%, 50Hzk2% output voltage: 115v +l%, 400Hz+l% output power: 250va (rating) 375va (5 minutes) switching frequency : 90kHz distortion: 4 .
  • A Multifunction Optical Fibre Communication System For Connection Between A Radar Head And Display Area.
    …was regenerated and converted to a 12 bit parallel word which controlled a digital-to-synchro converter . .... A 115v 400Hz reference signal was generated inside the receiver module. .... The subcarrier frequencies were chosen to minimise the effects of inter- modulation products and to ease filtering…
  • Research on Harmonics Suppression in High Power Middle Frequency 400Hz Inverter
    Each harmonic was compensated or suppressed by the properly designed filter or controller to ensure a satisfactory waveform in a high power middle frequency 400Hz/ 115V inverter. .... [1] U. B. Jensen, F. Blaabjerg, and J. K. Pedersen, “A new control method for 400 - Hz ground power units for airplanes,” IEEE Transactions on Industrial Applications, vol. .... [3] Z. Richard, “High performance power converter systems for nonlinear and unbalanced load or source,” Dissertation…
  • Constant frequency aircraft electric power systems with harmonic reduction
    The power control units are used to transform the “wild frequency ” AC power produced by the .... The motor-generator set is the same as the conventional case to provide the 115V -AC at 400Hz generator bus under the same AC and DC loads. .... aircraft EPS, the 270V-DC voltage is usually obtained by using 12 pulse converter to reduce the…
  • New PWM method for current fed type converter with filter circuit
    So, in order to remove it, the cut-off frequency of the filter circuit is decided at 400 Hz . .... Fig.6 shows the frequency responses from the converter current to the line current in the filter .... The operating condition are as follows; The line voltage Ea= 115V (line to line voltage 200V). the…
  • Multiple voltage electrical power distribution system for automotive applications
    These consist of dual alternators with independent voltage control and use of dc/dc converters . .... As power levels have increased,the 28V dc anid 115V ,3-phase, 400 Hz systems have increased to 120V dc and even to 270 V dc. .... In Space Station Freedom, a high frequency ac distribution system was evaluated.
  • Analysis of a novel forward DC link inverter
    U, is turning to zero periodically, so the dc-dc converter provides zero voltage switching (ZVS) condition .... Moreover the high frequency transformers, T4 and T5, can realize the electric isolation of the input power .... having the basic waveform's frequencyof 400Hz . .... out the sinusoidal wave output U, of 115V /400Hz.
  • Integrated power conditioning system for MTG and SOFC with improved power quality
    The total power provided by the SOFC and MTG was selected to be 440 kW, the ac-bus phase voltage is 115 V (RMS) and the frequency is 400 Hz . .... Topology I is a traditional topology where a DC-DC converter is used to interface with the .... P=440kW Vrms= 115V .