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High-Performance Predictive Control of Quasi-Impedance Source Inverter.
- Source :
- IEEE Transactions on Power Electronics; Apr2017, Vol. 32 Issue 4, p3251-3262, 12p
- Publication Year :
- 2017
-
Abstract
- The quasi-Z-source inverter (qZSI) has attracted much attention for motor drives and renewable energy applications due to its capability to boost or buck in a single converter stage. However, this capability is associated with different challenges related to the closed-loop control of currents, control the dc capacitor voltage, produce three-phase ac output current with high dynamic performance, and obtain continuous and low ripple input current. This paper presents a predictive control strategy for a three-phase qZSI that fulfills these requirements without adding any additional layers of control loops. The proposed controller implements a discrete-time model of the qZSI to predict the future behavior of the circuit variables for each switching state, along with a set of multiobjective control variables all in one cost function. The quasi-impedance network and the ac load are considered together when designing the controller in order to obtain stability of the impedance network with a step change in the output reference. A detailed comparative investigation between the proposed controller and the conventional proportional-integral (PI) controller is presented to prove the superiority of the proposed method over the conventional control method. Simulation and experimental results are presented. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 32
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 121013283
- Full Text :
- https://doi.org/10.1109/TPEL.2016.2531989