Novel Pulsating-DC High-Voltage Linear Driving Scheme for GaN LED General Lighting
, Baoxing Wang 3, Kai Fu 4, Rui Yue 1,2, Haojie Guo 3, Shuqi Li 3,* and Yong Cai 1,2,*
Round 1
Reviewer 1 Report
Dear authors,
Congratulations for your research regarding the reduction of the flicker and the costs of LED lighting by using the high voltage linear driving scheme.
The use of three phase system for such application demonstrates to be adequate.
The research is well conducted, both numerical and experimental. The paper is written and the English is fine.
I would recommend to improve the reference list in order to obtain a better rate of recent papers.
Author Response
Response：Thank you for your summary. We appreciate the reviewer for his kind recommendations.
The revision updates the reference list and increases the rate of recent papers to 60% within 5 years. Further, recent papers within 1 year were cited, like Ref [7], [8] and [9].
Reviewer 2 Report
I’m pleased to inform the current form of manuscript is accepted for publication.
Author Response
Response：Thanks for your approval. We will work harder to do a good job.
Reviewer 3 Report
The manuscript presented a novel pulsating-DC high-voltage linear driving scheme using three-phase AC power for GaN LED general lighting. It shows excellent driving performance and is validated by experimental results. The paper is well written and can be accepted for publication with some minor points that need to be addressed.
1. The authors claim the proposed scheme has better performance including high driving efficiency, high power factor, flicker free, high reliability, and low cost, compared to the conventional schemes such as the single-phase AC grids. It would be more advantageous to provide a quantitative comparison between the proposed scheme and the conventional schemes. The authors could consider illustrate the comparison with a figure or table to show the advantages of the proposed scheme.
2. Could the authors please comment on any possible disadvantages for the proposed scheme?
Author Response
Response：We appreciate the reviewer for raising these questions.
- We agree with the reviewer's suggestion of providing a comparison between the proposed scheme and the conventional scheme. The newly added Table 1 of the Introduction presents a comparison of single-phase and three-phase AC power supply as a linear driving power source for GaN LED general lighting.
- For the possible disadvantages of the proposed scheme, we think that larger voltage fluctuation is a potential issue. For example, if the voltage fluctuation of the supply grid exceeds 20%, the proposed scheme will require more sub-strings to achieve a driving efficiency higher than 90%, which will raise the cost of lighting. The power and brightness also have a large variation of about 20%. Therefore, this scheme can be used in regions where the grid is stable.
