Mixing ballasts and tubes - Page 3

oil pan 4 · 04-25-18, 06:04 PM

You can do power factor correction on motors and transformers.
All my welders and air compressorsare power factor corrected.
I tried to power factor correct cheap low power factor florescent lights, but adding capacitors made the power factor worse.
Might be able to power factor correct magnetic ballasts some what.
Cheap power supplies create phase distortion.

u3b3rg33k · 04-26-18, 11:08 AM

From what I was reading in that article, in small power supplies, active PFC circuitry is both fragile and expensive.
From a facilities standpoint, it's probably cheaper (and more reliable) to correct the power factor at the transformer feeding lighting panels than it is to have individual pfc at each fixture.

NiHaoMike · 04-26-18, 08:09 PM

Quote:

Originally Posted by u3b3rg33k

From what I was reading in that article, in small power supplies, active PFC circuitry is both fragile and expensive.
From a facilities standpoint, it's probably cheaper (and more reliable) to correct the power factor at the transformer feeding lighting panels than it is to have individual pfc at each fixture.

Some Dell servers have the option to disable PFC through the BIOS. The efficiency gain from bypassing PFC is worth it even in some commercial environments.

daiphucka · 10-26-18, 02:09 AM

I want to see more ideas

04-25-18, 06:04 PM	#21
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	You can do power factor correction on motors and transformers. All my welders and air compressorsare power factor corrected. I tried to power factor correct cheap low power factor florescent lights, but adding capacitors made the power factor worse. Might be able to power factor correct magnetic ballasts some what. Cheap power supplies create phase distortion.

04-26-18, 11:08 AM	#22
u3b3rg33k Apprentice EcoRenovator Join Date: Mar 2018 Location: Rustbelt, USA Posts: 114 Thanks: 5 Thanked 10 Times in 9 Posts	From what I was reading in that article, in small power supplies, active PFC circuitry is both fragile and expensive. From a facilities standpoint, it's probably cheaper (and more reliable) to correct the power factor at the transformer feeding lighting panels than it is to have individual pfc at each fixture.

10-26-18, 02:09 AM	#24
daiphucka Lurking Renovator Join Date: Oct 2018 Location: 375 QL13, Hiệp Bình Phước, Thủ Đức, Hồ Chí Minh Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts	I want to see more ideas