Automatic Power Controllers Used for Power Consumption in AC-to-DC LED Drivers
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 6
Abstract
A novel control scheme of quasi-resonant (QR) mode and valley-switching for high-power-factor (PF) ac-to-dc lightemitting diode (LED) drivers. The proposed driver control scheme is based on a buck PF corrector converter, which is operated in QR valley-switching. The proposed control scheme can directly sense the QR valley signal from the current sensor, and it is definitely different from the conventional method which senses the QR valley signal from auxiliary winding. The cost and size of the driver circuit can be remarkably reduced when the proposed control scheme is adopted. Furthermore, the proposed circuit can provide not only high PF and low total harmonic distortion but also high conversion efficiency. Up to 0.99 PF and 91.5% efficiency are obtained from an 8-W (40-W replaced) LED bulb driver prototype.
Authors and Affiliations
V. Mahesh Kumar, T. Poornipriya
Keywords
Related Articles
- EP ID EP22241
- DOI -
- Views 202
- Downloads 4
slugAdvanced Optimize Adaptive Filter Design
An adaptive filter is a filter containing coefficients that are updated by some type of adaptive algorithm to improve or somehow optimize the filter’s response to a desired performance criterion. Hence, the process not...
Persistent Disease Assessment and Management Portal
With the expansion of populace maturing in our nation, the quantity of patients with interminable illnesses is expanding quickly. Most interminable illnesses can't be cured completely and will trouble the patient's fami...
Experimental Investigation on the Permanent Dryout Heat Flux and Dryout Mass Transfer Coefficient on Single Horizontal Brass Tube of an Evaporative Heat Exchanger
An investigation on the permanent dryout heat flux and permanent dryout mass transfer coefficient on single horizontal brass tube of an evaporative heat exchanger is presented in this article. The permanent dry patch ex...
slugA Novel Approach of Association Mining with Apriori Algorithm to Extract the Frequent Itemsetset in OOD
Most Of the organization have major requirement of Distributed Centralized database system. Each user presents at specification location access the dataset according to his requirement. It means only the partial informa...
Performance Analysis of Flat Plate Solar Water Collector using Trapezoidal shape and Semicircular Tubes
The flat plate collector forms the heart of any solar energy collection systems designed for operation in the low temperature range, from ambient to 60oc, or the medium temperature range, from ambient to 100oc. A well e...