Save electricity with a 2 speed pool pump

NiHaoMike · 08-20-14, 07:26 PM

Solar panels are inherently DC, meaning they require an inverter for powering AC loads. The trapezoidal waveform allows the inverter to have a very high efficiency.

Actually, I looked it up and digital PFC is more common than I thought.
Energy Control - Digital Power Factor Correction

Enhanced efficiency analog PFC has a circuit that varies the cut in threshold according to load. For a fixed load (like non dimmable) lighting, that functionality would be trivial to implement. I don't know of a single chip to do it (over varying loads), but it can be implemented by adding a few opamps around a common analog PFC controller.

08-20-14, 07:26 PM	#36
NiHaoMike Supreme EcoRenovator Join Date: Oct 2008 Location: Austin, TX Posts: 1,154 Thanks: 14 Thanked 257 Times in 241 Posts	Solar panels are inherently DC, meaning they require an inverter for powering AC loads. The trapezoidal waveform allows the inverter to have a very high efficiency. Actually, I looked it up and digital PFC is more common than I thought. Energy Control - Digital Power Factor Correction Enhanced efficiency analog PFC has a circuit that varies the cut in threshold according to load. For a fixed load (like non dimmable) lighting, that functionality would be trivial to implement. I don't know of a single chip to do it (over varying loads), but it can be implemented by adding a few opamps around a common analog PFC controller. __________________ To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...