Predictive Control of Two-Stage Grid-Connected Photovoltaic Energy System with Constant Switching Frequency

Dahlmann, Alexander; Yaramasu, Venkata; Dekka, Apparao; Kouro, Samir; Padmanaban, Sanjeevikumar

doi:10.1109/pedg48541.2020.9244445

Cited by 2 publications

(1 citation statement)

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“…Within digital controllers, hysteresis-band controllers and linear-controllers with pulse-width modulation (PWM) [11] are the most popular for wide applications and generally present satisfactory results (but can also present a set of drawbacks, e.g., variable switching frequency and resonance phenomena). Gradually, predictive controllers have gained more attention for a wide variety of applications [12][13][14] [15][16]. Compared to conventional controllers, it is possible to consider the nonlinearities of the converter, as well as being more intuitive to understand and apply; nonetheless, as main handicap, presenting a more complex digital implementation.…”

Section: Introductionmentioning

confidence: 99%

Continuous Control Set Model Predictive Control of a Bridgeless-Boost Three-Level Active Rectifier

Monteiro

Afonso

Rodrigues

et al. 2021

IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society

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Over the past few decades, active rectifiers have assumed an important preponderance for numerous applications that propose to minimize power quality problems. Consequently, digital control algorithms are following this trend by contributing with a significant set of advantages. This paper presents the use of a continuous control set model predictive control (CCS-MPC) for a bridgeless-boost three-level (BB3L) active rectifier. The BB3L has a set of advantages when confronted with traditional solutions to improve power quality, where the possibility to operate with three voltage levels, sinusoidal current and unitary power factor, while using few switching devices, are the main features. Considering the multiplicity of applications for the BB3L active rectifier, the CCS-MPC is applied to obtain a robust current tracking. The BB3L is presented in detail throughout the paper and based on its mathematical model, the digital control equations are formulated, highlighting that the possibility of operating with a fixed switching frequency is the main characteristic. The results are achieved for many operating conditions, covering steady-state and transient-state, validating the accurate application of the CCS-MPC.

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Section: Introductionmentioning

confidence: 99%