My understanding of LLC designs is that they use frequency to control output voltage in a fixed secondary turns transformer witha fixed resonant frequency.
Here is my problem:
- I need the supply to operate with a changing resonant frequency (fixed for each unit).
- I can't alter the turns ratio on the transformer and I need to set the switching frequency.
How can I use the Hiper PLC to do this ?
Can I change from an LLC mode to a different one ?
The PLC appears to be a continuous mode mechanism. Maybe I need discontinuous but the LCS model does not seem to work for high voltages(using the PI-expert s/w). Probably I am not setting something correctly...
- the lamp connected to the output has a capcitance, which cannot be determined beforehand, and is different for every device.
- The resonant frequency cannot be determined at manufacture only when deploying.
- The resonant frequency and output voltage both need to be independently adjustable to achieve the desired effect when deploying.
- output wattage is in area of 80-150W
- output voltage is in range 7000 to 20000 V
- AC output. not required to be tightly regulated.
- frequency range of output needs to be between 20kHz-100kHz (PLC suggests 30k minimum)
- magnetics can be large to enable sufficient power to be used. Typically something like
TSC Ferrite International 81-33-16 core in 7070 material
end result looks like:
Can you offer any advice please.