I am trying to simulate the capacitive power transfer with PSIM. I used two regular capacitors (one in the line side, one in neutral side) as a representation of the capacitive interface. I found that the transferred power to the receiver side is almost zero. My first guess of the problem is I cannot use that simple model in simulation, we need to have a coupled capacitors that are similar to the coupled inductors concept.
Is there anybody has encountered this problem before?
Do we need to remodel the capacitor since we don't have a coupled capacitor element in PSIM?
Any response is very appreciated. Thanks
I would like to give a conceptual answer. The capacitive AC power transfer can be accomplished by coupling the load to the source by a coupling capacitor. The coupling capacitor may be connected between the load and the active terminal of the source. The neutral line can be connect ed directly to the other terminal of the load. The other connection is to put coupling capacitor in the active line path to the load and the other to the neutral line path to the load. This means one can use use either one coupling capacitor and two coupling capacitors.
If the source voltage is Vs , the load resistance is RL and the coupling capacitance is Cc,
Then for one coupling capacitor Vl= the load voltage = Vs RL/( RL+ 1/jwCc),
In case of two coupling capacitors Vl= Vs RL/( RL+ 2/jwCc),
So, the transfer depends on the ratio of RL to 1/wCc that the rario of the load to the reactance of the coupling capacitor.
Best wishes
Thank you, Mr. Abdelhalim Zekry. I got your explanation. After reading some literature I got the answer for my question.
Best Regards
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