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Recent content by want_to_know

  1. W

    Problem with connecting two voltage sources in series

    hi, thanks for your reply, I understand that by applying Kirchoff Law, IZ+Vg-Vb=0 I = (Vb-Vg)/(Z) For the case where both phase shift are zero, I calculated I value from the above equation, Z=0.0628 I= 0.001/0.0628 = 0.016 A but the simulation result gives 0.03A, what did I miss? Please...
  2. W

    Problem with connecting two voltage sources in series

    Hi, Please forgive me for a simple question like this, I am new to this area, and was trying to understand how two voltage sources work when connecting in series. Please refer to figure 1, I set R=0.0001 ohm, L =0.01 H, Vb = 10.001V, frequency = 1, phase shift = 0 Vg = 10V, frequency = 1...
  3. W

    Replacing PLL with a ramp signal and clock

    I want to use PLL to lock the grid frequency, then I want to synchronize my system frequency to be the same as this grid frequency . Since I know grid frequency is always fixed at 60Hz (for example), I was told that I can instead use a ramp signal along with clock to replace PLL in Simulink, but...
  4. W

    Replacing PLL with a ramp signal and clock

    Hi all, How can a ramp signal and clock be used to replace a PLL (phase locked loop) in the case where I know frequency is always fixed at say 60 Hz? Thanks
  5. W

    Battery is discharging faster than expected,: Charge controller fault?

    Hi Bill, thanks for your reply, it is simulation, everything is in Matlab-Simulink.
  6. W

    Battery is discharging faster than expected,: Charge controller fault?

    Hi all, I am working on a simple system working to balance charge among four Li-ion cells in Matlab-Simulink. All the controller and Li-ion cell models are in Matlab-Simulink. I want to discharge four cells within an hour (3600 seconds), so I work around with the R,V, and I values so that the...

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