High Power Factor Ag/Ag2Se Composite Films for Flexible Thermoelectric Generators

2021 ◽  
Vol 13 (12) ◽  
pp. 14327-14333 ◽  
Author(s):  
Qi Gao ◽  
Wu Wang ◽  
Yao Lu ◽  
Kefeng Cai ◽  
Yating Li ◽  
...  
Keyword(s):  
Power Factor ◽  
High Power ◽  
Composite Films ◽  
Thermoelectric Generators ◽  
High Power Factor ◽  
Flexible Thermoelectric

Complementary n‐Type and p‐Type Graphene Films for High Power Factor Thermoelectric Generators

2020 ◽  
Vol 30 (28) ◽  
pp. 2001760 ◽  
Author(s):  
Travis G. Novak ◽  
Jin Kim ◽  
Jungmo Kim ◽  
Anand P. Tiwari ◽  
Hosun Shin ◽  
...  
Keyword(s):  
Power Factor ◽  
High Power ◽  
Thermoelectric Generators ◽  
Graphene Films ◽  
High Power Factor ◽  
P Type

Mass-produced metallic multiwalled carbon nanotube hybrids exhibiting high N-type thermoelectric performances

2021 ◽  
Author(s):  
Yizhuo Wang ◽  
Zhongxu Lu ◽  
Qiujun Hu ◽  
Xia Qi ◽  
Qing Li ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Power Factor ◽  
High Power ◽  
Mass Production ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
High Power Factor ◽  
Te Material ◽  
Flexible Thermoelectric

Finding a stable n-type flexible thermoelectric (TE) material with a high power factor and mass production is a challenge for wearable TE devices.

Flexible thermoelectric films with high power factor made of non-oxidized graphene flakes

2D Materials ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 045019 ◽  
Author(s):  
Travis G Novak ◽  
Jin Kim ◽  
Jungmo Kim ◽  
Hosun Shin ◽  
Anand P Tiwari ◽  
...  
Keyword(s):  
Power Factor ◽  
High Power ◽  
High Power Factor ◽  
Graphene Flakes ◽  
Flexible Thermoelectric

High Power Factor Based Novel Design of Sodium Lamps

2010 ◽  
Vol 4 (2) ◽  
pp. 1-6
Author(s):  
S. Sankar ◽  
◽  
G. Gokula Krishnan ◽  
Keyword(s):  
Power Factor ◽  
High Power ◽  
High Power Factor ◽  
Novel Design

scholarly journals A Novel Single-Switch Single-Stage LED Driver with Power Factor Correction and Current Balancing Capability

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1340
Author(s):  
Yih-Her Yan ◽  
Hung-Liang Cheng ◽  
Chun-An Cheng ◽  
Yong-Nong Chang ◽  
Zong-Xun Wu
Keyword(s):  
Power Factor ◽  
High Power ◽  
Pulse Width Modulation ◽  
Power Factor Correction ◽  
Harmonic Distortion ◽  
Boost Converter ◽  
Single Stage ◽  
Led Driver ◽  
Flyback Converter ◽  
High Power Factor

A novel single-switch single-stage high power factor LED driver is proposed by integrating a flyback converter, a buck–boost converter and a current balance circuit. Only an active switch and a corresponding control circuit are used. The LED power can be adjusted by the control scheme of pulse–width modulation (PWM). The flyback converter performs the function of power factor correction (PFC), which is operated at discontinuous-current mode (DCM) to achieve unity power factor and low total current harmonic distortion (THDi). The buck–boost converter regulates the dc-link voltage to obtain smooth dc voltage for the LED. The current–balance circuit applies the principle of ampere-second balance of capacitors to obtain equal current in each LED string. The steady-state analyses for different operation modes is provided, and the mathematical equations for designing component parameters are conducted. Finally, a 90-W prototype circuit with three LED strings was built and tested. Experimental results show that the current in each LED string is indeed consistent. High power factor and low THDi can be achieved. LED power is regulated from 100% to 25% rated power. Satisfactory performance has proved the feasibility of this circuit.

Sign in / Sign up

Export Citation Format

Share Document