Title :
Model Predictive Control of Z-source Neutral Point Clamped Inverter
Author :
Wei Mo ; Poh Chiang Loh ; Andrew ; Blaabjerg, Frede
Author_Institution :
Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
This paper presents Model Predictive Control (MPC) of Z-source Neutral Point Clamped (NPC) inverter. For illustration, current control of Z-source NPC grid-connected inverter is analyzed and simulated. With MPC´s advantage of easily including system constraints, load current, impedance network inductor current, capacitor voltage as well as switching frequency, transient response are all regulated as subjecting to constraints of this control method. The quality of output waveform, stability of impedance-network, level constraint of variable switching frequency as well as robustness of transient response are obtained at the same time with a formulated Z-source NPC inverter network model. Operation steady state and transient state simulation results of MPC are going to be presented, which shows good reference tracking ability of this method. It provides new control method for Z-source NPC inverter without any linear controller and modulations.
Keywords :
electric current control; invertors; predictive control; stability; Z-source neutral point clamped inverter; capacitor voltage; current control; impedance network inductor current; level constraint; load current; model predictive control; operation steady state simulation; reference tracking ability; stability; system constraints; transient response; transient state simulation; variable switching frequency; Inductors; Inverters; Mathematical model; Switches; Switching frequency; Transient analysis;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2011 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
978-1-4577-0542-7
DOI :
10.1109/ECCE.2011.6064290