Title :
Control of a Fuel Cell Based Z-Source Converter
Author :
Jung, Jin-Woo ; Keyhani, Ali
Author_Institution :
Samsung SDI Co, Yongin
fDate :
6/1/2007 12:00:00 AM
Abstract :
This paper presents system modeling, modified space vector PWM implementation (MSVPWM), and control system design of a Z-source converter. For an electrical analysis of the fuel cell powered systems, the fuel cell system is modeled by an R-C circuit including its voltage-current polarization characteristics. A discrete-time state space equation is given to implement digital control and a space vector pulse-width modulation technique is modified to realize the shoot-through zero vectors that boost the dc-link voltage. Three discrete-time controllers and an asymptotic observer are designed.
Keywords :
PWM power convertors; RC circuits; control system synthesis; discrete time systems; fuel cell power plants; observers; state-space methods; DC-link voltage; R-C circuit; asymptotic observers; control system design; digital control; discrete-time state-space equations; fuel cell based Z-source converter; fuel cell power systems; modified space vector PWM implementation; shoot-through zero vectors; voltage-current polarization characteristics; Circuits; Control system synthesis; Fuel cells; Polarization; Power system modeling; Pulse width modulation converters; Space vector pulse width modulation; State-space methods; System analysis and design; Voltage; Digital control; Z-source converter; distributed generation systems; dynamic model; fuel cells; space vector PWM;
Journal_Title :
Energy Conversion, IEEE Transactions on
DOI :
10.1109/TEC.2006.874232
