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| Control strategy for driving AC LED based on energy balancing |
| Chen Wei1, Liu Dong1, Ye Shaoshi2 |
1. Zhejiang Insigma United Engineering Co., Ltd, Hangzhou 310051
2. Nokia Networks, Hangzhou 310053 |
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Abstract To overcome the energy unbalancing issue exhibiting in the conventional high power AC LED control strategies, this paper proposed a novel control strategy based on the energy balancing of each LED segments when powered on. While inherited the high PF/low THD merits as like its ancestor, this proposed control method can assure an equal power among each LED segment theoretically throughout an entire AC period, based on the optimum algorithm for conducting time, and which can lengthen the lifespan for the LED luminaire. Principle analysis and design considerations were given and an experimental prototype verified the validity.
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Received: 01 June 2017
Published: 07 February 2018
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2018, Vol. 19 
