System integration of a portable direct methanol fuel cell and a battery hybrid
详细信息 查看全文
- 作者：Younghyun Kim ; Donghwa Shin ; Jueun Seo ; Naehyuck Chang ; Hyejung Cho ; Youngjae Kim ; Seongkee Yoon
- 关键词：Portable fuel cell ; Direct methanol fuel cell ; Hybrid power source ; System integration ; Microprocessor ; Software
- 刊名：International Journal of Hydrogen Energy
- 出版年：2010
- 出版时间：June 2010
- 年：2010
- 卷：35
- 期：11
- 页码：5621-5637
- 全文大小：2485 K
文摘
This paper introduces a complete system-level design and integration of a portable direct methanol fuel cell (DMFC) system. We describe hardware and software design for the balance of plant (BOP) control, including a 32-bit microprocessor and electronics for actuators and sensors, focusing on reliable operation and protection of the DMFC system. Various BOP components are characterized to find the optimal design for better portability, reliability, and energy efficiency, and we suggest effective and robust design of control loops for them. We demonstrate a hybrid operation of the DMFC stack and Li-ion battery to maintain a constant stack output current regardless of the load current to maximize the performance. We emphasize the design of subsystems for power supply, measurement, actuator drive, and protection in detail. We verify the robust operation of BOP control against environmental changes such as orientation and pressure variations with an implemented control board.