Mitigating the Voltage Fluctuation of DC Capacitor and Coupling Point Using Capacitor Current Control Method in DFIG System

Ferdous, Md. Shafiul; Salma, U.; Kabir, S. M. Lutful; Sharif, Saleh Ebn

doi:10.1109/ciet.2018.8660879

Cited by 1 publication

(2 citation statements)

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“…In the design of the PI current (s) controllers, a bandwidth of 1000 rad s and a damping coefficient of 0.707 were considered for closed-loop design criteria, obtaining the parameters of the PI current (s) as shown in (14).…”

Section: Cascade Controller Designmentioning

confidence: 99%

“…Numerous power converter topologies have a capacitor as a voltage stabilizer in the DC link that is responsible for keeping the voltage as stable as possible. This capacitor is under constant stress due to the frequency components that are reflected from the AC side to the DC side, which decrease the capacitor's lifespan [13,14]. Most strategies for solar applications control the voltage on this capacitor, minimizing ripple with larger capacitors, thus increases the cost [15].…”

Section: Introductionmentioning

confidence: 99%

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Predictive Control with Current-Based Maximum Power Point-Tracking for On-Grid Photovoltaic Applications

et al. 2021

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The high increase of renewable energy sources and the increment of distributed generation in the electrical grid has made them complex and of variable parameters, causing potential stability problems to the PI controllers. In this document, a control strategy for power injection to the electrical system from photovoltaic plants through a voltage source inverter two-level-type (VSI-2L) converter is proposed. The algorithm combines a current-based maximum power point-tracking (Current-Based MPPT) with model predictive control (MPC) strategy, allowing avoidance of the use of PI controllers and lowering of the dependence of high-capacitive value condensers. The sections of this paper describe the parts of the system, control algorithms, and simulated and experimental results that allow observation of the behavior of the proposed strategy.

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Section: Cascade Controller Designmentioning

confidence: 99%