Permanent Magnet Synchronous Generator Connected to a Grid via a High Speed Sliding Mode Control

Abstract

Wind power generation has recently received a lot of attention in terms of generating electricity, and it has emerged as one of the most important sources of alternative energy. Maximum power generation from a wind energy conversion system (WECS) necessitates accurate estimation of aerodynamic torque and system uncertainties. Regulating the wind energy conversion system (WECS) under varying wind speeds and improving the quality of electrical power delivered to the grid has become a difficult issue in recent years. A permanent magnet synchronous generator (PMSG) is used in the grid-connected wind-turbine system under investigation, followed by back-to-back bidirectional converters. The machine-side converter (MSC) controls the PMSG speed, while the grid-side converter (GSC) controls the DC bus voltage and maintains the unity power factor. The control approach is second-order sliding mode controls, which are used to regulate a nonlinear wind energy conversion system while reducing chattering, which causes mechanical wear when using first-order sliding mode controls. The sliding mode control is created using the modified super-twisting method. Both the power and control components are built and simulated in the same MATLAB/Simulink environment. The study successfully decreased the chattering effect caused by the switching gain owing to the high activity of the control input.

Load frequency control in Island micro-grid with electric vehicles and renewable energy sources using modified fractional order PID controller

“…The system comprises a generator coupled to a shaft that transforms the rotor's rotation into electrical energy. Due to its high efficiency, low maintenance cost, easy controllability, and high power density, the variable speed direct drive permanent magnet synchronous generator (PMSG) is now widely employed in wind power systems [17]. However, the generator model is analyzed using the dq reference frame and its voltage equation is given as ( 2) and (3).…”

“…The frequency of the system is affected by changes in load. The following expression represents the transfer function for the change as (17).…”

Large scale penetration impact of PMS-WTGS on voltage profile and power loss for 5-bus, 330kV system of the Nigerian grid

“…The wind turbines in this study employ Permanent Magnet Synchronous Generator dynamic model, developed in direct and quadrature (d-q) rotating reference. Their voltage equations can be written as [11]:…”

“…Several were done on RERs' integration into national electric grids to enhance power quality issues [9][10][11][12][13]15,17]. Study in [9] gives a decarbonization pathway in the United States and how to satisfy American reduction targets of GHG emission.…”

Sliding Mode Control Design for Magnetic Levitation System

“…The sliding mode control is a robust nonlinear controller which can easily handle a system's nonlinearity, uncertainty and model mismatch [49]- [52]. It has been implemented to control both linear and nonlinear systems: hydraulic [53][54], single machine infinite bus system [55], inverted pendulum [56]- [58], DC motor [59], induction motor [60], suspension [61], permanent magnet synchronous generator [62], hyperchaotic system [63], quadcopter [64], mobile robot [65][66], stepper motor [67], tank system [68] and robot manipulator [69]. According to study findings, SMC has been reported to give promising results.…”