Yanjian Peng 1, Yong Li 1,*, Zhisheng Xu 2, Ming Wen 2, Longfu Luo 1, Yijia Cao 1 and Zbigniew Leonowicz 3 1 College of Electrical and Information Engineering, Hunan University, Changsha 410082, China; [email protected] (Y.P.); [email protected] (L.L.); [email protected] (Y.C.) 2 Hunan Electrical Power Corporation Economical & Technical Research, Changsha 410004, China; [email protected] (Z.X.)...

With the increase of photovoltaic penetration rate, fluctuation power generation affects reliability ship grids. Marine PV grid-connected systems with high rates should generally have a low voltage ride-through capability. In present paper, strategy in which super capacitors are applied for energy storage marine system is proposed, and an inverter adopts independent decoupling control active re...

A fault current limiter (FCL) may be applied to assist the low-voltage ride-through (LVRT) of a doubly fed induction generator (DFIG). FCLs with fixed impedance, lack flexibility adjust their impedance adapt different LVRT scenarios. The direct switch-in and -out fixed-impedance FCL yields transient electromagnetic oscillations in DFIG, which need addressed. In this paper, variable-impedance is...

In accordance with South Korea’s recent 2030 Carbon Neutral Plan, an 8GW offshore wind farm is planned for construction in the South-west Sea. Therefore, it expected that large-scale turbines will be installed, and these must operate stably, even when there are instantaneous voltage fluctuations power system. The grid code described low-voltage-ride-through (LVRT) high-voltage-ride-through (HVR...

As large-scale wind turbines are connected to the grid, modeling studies of farms essential power system dynamic research. Due large number in farm, detailed each turbine leads high model complexity and low simulation efficiency. An equivalent method for farm is needed reduce complexity. For with widely used doubly-fed induction generators (DFIGs), existing mainly focus on such continuous contr...

This paper presents a synchronverter based photovoltaic (PV) system as STATCOM (PV-STATCOM), in which inverter exchanges active and reactive power with the grid. The proposed provides compensation during daytime well nighttime. Additional operating modes for PV-STATCOM are to enhance its capability. controller is compared conventional control on basis of performance different tests. key differe...

In this paper, the authors investigated a Direct Drive Permanent Magnet Synchronous Generator Wind Turbine (PMSG-WT). This study deals with control of the PWM back-to-back converter (AC/AC) of the wind turbine, since the average size of WTG installations has increased due to the advent of larger capacity machines, especially variable speed technology, this raise of integration rate of wind ener...

The LVRT (Low Voltage Ride Through) is the main characteristic of every power system in faulty conditions. When fault occurs, it is essential for power system such as microgrid to control the voltage and frequency normally. Naturally in fault status, the unbalanced voltage and current are inevitable, but with the aid of LVRT technique, microgrid can keep stability in main system parameters such...