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I need some help with this schematic to have higher voltage at Vrect. This is for charging a receiver at 25 mm in a WPT application. I was expecting a voltage of 2Vin at the output of the voltage doubler, but as shown in the simulation, is not working. I'm using inductive coupling to transmit energy enter image description here Something wrong is happening and I don't know whatenter image description hereenter image description here enter image description here

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  • \$\begingroup\$ Welcome! Care to elaborate on what you think is wrong and what you excepted? \$\endgroup\$
    – winny
    Commented May 16, 2022 at 7:58
  • \$\begingroup\$ What is wrong is that the output at Vrect_A doesn't double de voltage for VoutAC_p \$\endgroup\$
    – Guillermo Durà Mira
    Commented May 16, 2022 at 8:02
  • \$\begingroup\$ Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. \$\endgroup\$
    – Community Bot
    Commented May 16, 2022 at 8:40
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    \$\begingroup\$ what does it do without I1 in circuit? \$\endgroup\$
    – user16324
    Commented May 16, 2022 at 11:59
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    \$\begingroup\$ Why not increase the secondary? Voltage doublers are not that effective, and they usually have the same capacitor, over and over (you have a 15n and 5u, formed by C1 and C2 in series). Not lastly, have you considered that 0.55 A is too much for the doubler? (don't forget to add the load flag to the current source, otherwise it will sink current even when the voltage goes negative) \$\endgroup\$
    – a concerned citizen
    Commented May 17, 2022 at 7:29

1 Answer 1

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The coupling between the two coils is very small. 0.089939 means about only ~9% of the flux from the primary coil is making it to the secondary. Try starting with a K = 1 for an ideal transformer to get things working.

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  • \$\begingroup\$ The thing is that the coils are already designed for that coupling factor. I don't have a transformer, I have PCB coils simulated with Ansys, trying to build optimum coils in a limited area \$\endgroup\$
    – Guillermo Durà Mira
    Commented May 18, 2022 at 8:14

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