Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 65, Issue 4, Pages 2844-2852Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2017.2750627
Keywords
AC-DC power converters; active damping (AD); finite control set model predictive control (FCS-MPC); inductive. capacitive. inductive (LCL) filter; predictive control
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Funding
- Ministry of Science and Higher Education (MNiSW) [S/WE/3/2013]
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This paper presents two new implementations of finite control set model predictive control (FCSMPC) methods applied to ac-dc converters with an inductive. capacitive. inductive (LCL) filter. The LCL filter, despite its advantages, can cause a strong resonance in the grid current and also pose a substantially more complex control problem. The new solutions improve the FCS-MPC with an active damping algorithm by eliminating low-order grid current harmonics and decreasing sensitivity to grid voltage distortion. The new methods, i.e., PCi(1) i(2)u(c) and PCi(1) i(2)uc-2steps propose multivariable approaches using converterside current, line-side current, and capacitor voltage. Another improvement involves extending the prediction horizon in PCi(1) i(2)uc-2steps. Both methods have been tested and compared in steady and transient states as well as under grid voltage disturbances. The methods were also compared with a predictive control algorithm with active damping. The simulation results and experimental-measurements validate the developed control schemes and show high quality of grid current (low THDi value), high dynamic performance, and immunity under distorted grid voltage conditions.
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