Control of a Fuel Cell Based Z-Source Converter
Jin-Woo Jung and Ali Keyhani
Ohio State Univ, Columbus, OH, USA ;
This paper appears in : IEEE Transactions on
Energy Conversion
Date: June 2007
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 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.