A Direct Peak DC-link Boost Voltage Control Strategy in Z-Source Inverter

A PID controller for direct peak dc-link boost voltage in Z-source inverter has been introduced. With this technique a high-performance inverter output voltage can be achieved with an excellent transient performance which enhances the rejection of disturbance, including the input voltage ripple and load current variation, and have good ride-through for voltage-sags. The peak dc-link voltage direct sensing & scaling method, and modified modulation strategy have been described, which simplify the controller design, improve the transient response and decrease the voltage stress across the switches. The proposed technique was verified on a 10-kW prototype. The experimental results meet the simulation and analysis results very well.

[1]  Zhaoming Qian,et al.  A PID Control Strategy for DC-link Boost Voltage in Z-source Inverter , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[2]  Hong-Hee Lee,et al.  Algorithms for controlling both the DC boost and AC output voltage of the Z-source inverter , 2005, 31st Annual Conference of IEEE Industrial Electronics Society, 2005. IECON 2005..

[3]  P.C. Loh,et al.  Transient modeling and analysis of pulse-width modulated Z-source inverter , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..

[4]  Poh Chiang Loh,et al.  Modeling and design of multi-loop closed loop controller for Z-source inverter for Distributed Generation , 2006 .

[5]  Fang Zheng Peng.  Z-source inverter , 2002 .

[6]  Bimal K. Bose,et al.  Modern Power Electronics and AC Drives , 2001 .