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Recent content by Jakie Ee

  1. J

    generate SPWM with multicarrier for five level inverter

    Hi, anyone can shows me how to write c code to generate SPWM for five level inverter? the example circuit is in this link: https://www.wpi.edu/Pubs/E-project/Available/E-project-042711-190851/unrestricted/PWM_Techniques_final.pdf
  2. J

    problem 5 level H-bridge inverter

    so i need 4 gate drivers with 4 optocouplers and 4 voltage supply ..right?? can i use bootstrap supply instead?. ..so i can reduce the components in circuit
  3. J

    problem 5 level H-bridge inverter

    thx u so much...very helping information. one last question..what is the difference between bootstrap supply and floating gate supply? which one is better..?
  4. J

    problem 5 level H-bridge inverter

    ok.. how bout ground from controller?..does it need to connect to gate driver ground? i found one thread bout paracitic capacitance in mosfet and 1k resistor between the gate and source of each MOSFET. can u clarify this?
  5. J

    problem 5 level H-bridge inverter

    ok2..here the details.. 1. no error in input signal because when i used voltage controlled switch, it works perfectly..i used 100us deadtime to prevent shoot-through 2. problem started when i connect mosfet with gate driver..the input cannot be increased more than 3v 3. each h-bridge has...
  6. J

    problem 5 level H-bridge inverter

    same ground is just in schematic. sorry,im in hurry when i draw this. in real experiment, i am using different power source and of course different grounding..it the same case also for gate driver.. do i need separate source for each gate driver?? does it mean i need six different input??
  7. J

    designing a low pass filter for inverter

    check the rating.. or use ac capacitor..
  8. J

    problem 5 level H-bridge inverter

    - - - Updated - - - thx for the reply.. i am using different power supplies... as for input.. each gate driver has non inverting signal at Hin and inverting signal at Lin.. pwm at first h bridge is different from second one.only square wave is same i mean i actually already has 6 input to the...
  9. J

    designing a low pass filter for inverter

    use lc low pass filter..easy the cut off frequency should in range between fundamental and switching frequency...
  10. J

    problem 5 level H-bridge inverter

    hi i face problem with my 5 level H bridge inverter it cannot receive input voltage higher than 3v if the input higher than 3 voltage it will short circuit the output also cnnot show 5 level step voltae output i am using irfz44r power mosfet with ir2101 gate driver help, please
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