Industry Patents
Patent: 7358706
Power Factor Correction Control Methods and Apparatus
(Click image for PDF of full patent)
| Patent Number: |
7358706 |
| Title: |
Power Factor Correction Control Methods and Apparatus |
| Abstract: |
Power factor correction control methods and apparatus based on knowing in
advance some information relating to anticipated load conditions (e.g., a
desired power to be provided to a load). Based on "feeding-forward" known
information about anticipated load conditions, power factor correction
control loop response is significantly improved, particularly in
situations in which the load power traverses a wide range in a short time
period (e.g., load full off to load full on, or vice versa). As a result
of improved control loop stability, smaller circuit components may be
employed based on more predictable expectations for signal values,
thereby reducing the cost and/or size of the implemented circuits. In one
example, a processor controls both a feed-forward power factor correction
apparatus and a feed-forward power driver for an LED-based light source
to provide an efficient source of radiation using significantly
streamlined circuits having fewer components and smaller space
requirements.
|
| Country of Issue: |
US |
| First Named Inventor: |
Lys |
| Assignee: |
Philips SSL |
| Continuation or Divisional of: |
|
| International Classification: |
G05F 1/10 |
| US Classification: |
323/222 |
| Issue Date: |
04-15-2008 |
| Filing Date: |
03-14-2005 |
| Application : |
11/079905 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7358706 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7358706 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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