9 Publications
2009
Micromachined PZT cantilever based on SOI structure for low frequency vibration energy harvesting
Shen, Dongna⋅Park, Jung-Hyun⋅Noh, Joo H⋅Choe, Song-yul⋅Kim, Seung-Hyun⋅Wikle, Howard C and Kim, Dong Joo
Sensors and Actuators, A: Physical, vol. 154, (no. 1), pp. 103-108, 2009. | Journal Article
2008
Coolant controls of a PEM fuel cell system
Ahn, Jong-Woo and Choe, Song-yul
Journal of Power Sources, vol. 179, (no. 1), pp. 252-264, 2008. | Journal Article
 
Dynamic Simulator for a PEM Fuel Cell System With a PWM DC/DC Converter
Choe, Song-yul⋅Ahn, Jong-Woo⋅Lee, Jung-Gi and Baek, Soo-Hyun
IEEE Transactions on Energy Conversion, vol. 23, (no. 2), pp. 669-680, 2008. | Journal Article
 
The design, fabrication and evaluation of a MEMS PZT cantilever with an integrated Si proof mass for vibration energy harvesting
Shen, Dongna⋅Park, Jung-Hyun⋅Ajitsaria, Jyoti⋅Choe, Song-yul⋅Wikle III, Howard C and Kim, Dong Joo
Journal of Micromechanics and Microengineering, vol. 18, (no. 5), pp. 055017 (7pp), 2008. | Journal Article
2007
Integrated modeling and control of a PEM fuel cell power system with a PWM DC/DC converter
Choe, Song-yul⋅Lee, Jung-Gi⋅Ahn, Jong-Woo and Baek, Soo-Hyun
Journal of Power Sources, vol. 164, (no. 2), pp. 614-623, 2007. | Journal Article
2006
The Optimal Design and Analysis of Piezoelectric Cantilever Beams for Power Generation Devices
Shen, Dongna⋅Ajitsaria, Jyoti⋅Choe, Song-yul and Kim, Dong Joo
Materials and Devices for Smart Systems II, vol. 888, pp. 271-276, 2006. | Journal Article
 
The Optimal Design and Analysis of Piezoelectric Cantilever Beams for Power Generation Devices
Shen, Dongna⋅Ajitsaria, Jyoti⋅Choe, Song-yul and Kim, Dong Joo
Materials and Devices for Smart Systems II, vol. 888, pp. 271-276, 2006. | Journal Article
2005
A high dynamic PEM fuel cell model with temperature effects
Shan, Yuyao and Choe, Song-yul
Journal of Power Sources, vol. 145, (no. 1), pp. 30-39, 2005. | Journal Article
2000
An improved stator flux estimation for speed sensorless stator flux orientation control of induction motors
Shin, Myoung-Ho⋅Hyun, Dong Seok⋅Cho, Soon-Bong and Choe, Song-yul
IEEE Transactions on Power Electronics, vol. 15, (no. 2), pp. 312-318, 2000. | Journal Article