Hi folks ...
I am about to start experimenting with an alternative energy project, the details of which are not particularly important save to say that there is an alternator driven by a small water turbine.
The available power will vary quite a bit and I have decided to use a shunt regulator for two reasons
A voltage sensor with a small hysteresis which will create a free running stream of pulses at no particular frequency or pulse width into the dump load.
A PWM generator with the duty cycle being varied over a small voltage range, essentially the same range as the hysteresis above.
I appreciate that PID is a better option but dont want to get that complex as the applications loads will not require a closely controlled voltage.
The target is 24V nominal and I would like to get within +/- 0.5 if at all posible.
As always any and all comments welcome.
Thanks
I am about to start experimenting with an alternative energy project, the details of which are not particularly important save to say that there is an alternator driven by a small water turbine.
The available power will vary quite a bit and I have decided to use a shunt regulator for two reasons
- It will not drop any voltage when the available power is low.
- It will reduce overspend and hence over voltage problems.
A voltage sensor with a small hysteresis which will create a free running stream of pulses at no particular frequency or pulse width into the dump load.
A PWM generator with the duty cycle being varied over a small voltage range, essentially the same range as the hysteresis above.
I appreciate that PID is a better option but dont want to get that complex as the applications loads will not require a closely controlled voltage.
The target is 24V nominal and I would like to get within +/- 0.5 if at all posible.
As always any and all comments welcome.
Thanks