In simple terms solar and
wind regulators
work differently.
A solar
regulator turns the solar panel off and on rapidly to achieve the desired voltage.
A wind
regulator diverts the excess power so it is converted to heat.
The reason for this difference is a solar panel when open circuit (disconnected from the battery) does not cause any problems.
A
wind generator when open circuit (disconnected from the battery) speeds up, because there is no load, and can exceed it design parameters and speed. A wind regulator needs to keep a load on the
wind generator when regulating,
solar panels can have no load without damage.