Active and Passive Control of a Dual Rotor Wind Turbine Generator for DC Grids

Bizon

2021

Electronics

A terminal synergetic control (TSC) is designed in this work for a rotor side converter (RSC) of asynchronous generator (ASG)-based dual-rotor wind power (DRWP) systems. The design is based on a novel sliding manifold and aims at improving the ASG performance while minimizing active and reactive power undulations. The method performance and its effectiveness were studied under harmonic distortion (THD) of current, parameter variations and power undulations. Simulation results, carried out using Matlab software, confirmed the system’s robustness against parameter variations and its effectiveness in power undulations. The performance of the designed technique was further compared to that of integral-proportional (PI) controllers in terms of parameter variations, power undulations and THD value of current. While both controllers were able to reduce the effects of power undulations and protect the rotor circuit against over-currents, the proposed TSC was shown to be more effective than the classical PI controller in tracking power and minimizing the undulations effect.

Section: Drwp Modelmentioning

confidence: 99%

Terminal Synergetic Control for Direct Active and Reactive Powers in Asynchronous Generator-Based Dual-Rotor Wind Power Systems

Bizon

2021

Electronics

“…But if the system parameters are changed, the PI controller is affected by this change and this is noticed in the presence of ripples and slow dynamic speed. Equation (10)…”

Section: Design Of the Spi-ga Controllermentioning

confidence: 99%

“…In the field of WE, several types of turbines can be used to generate enough energy from the wind to spin a generator. These types can be divided into two types: single-rotor WEs [6][7][8] and multi-rotor WEs [9,10]. Whereas the multi-rotor WE is a development of the single-rotor WE in order to increase the value of torque and mechanical energy required to rotate the generator [11].…”

Section: Introductionmentioning

confidence: 99%

Synergetic-PI controller based on genetic algorithm for DPC-PWM strategy of a multi-rotor wind power system

Gasmi

Çolak

et al. 2022

Preprint

This work designs a powerful new nonlinear method using synergetic control (SC), proportional-integral (PI) controller, and genetic algorithm (GA) for multi-rotor wind energy (MRWE) conversion systems, whereby an asynchronous generator is used to achieve optimal energy extraction. The direct power control (DPC) is used based on the proposed synergetic-PI-GA (SPI-GA) method to control the generator in a MRWE system, where this new nonlinear technique is used to achieve stable control characteristic under random changes in wind speed and to provide great robustness against modeling uncertainties. Moreover, the pulse width modulation (PWM) technique is used to control the generator inverter due to its simplicity and ease of implementation. In this proposed DPC-SPI-GA method, we need to measure current and voltage to estimate the active power and the reactive power. Also, inner loops are not used in this proposed DPC-SPI-GA method as is the case in the field-oriented control (FOC) method, where the proposed system in this work is characterized by an integrated structure. Three different tests are proposed to study and verify the behavior of the designed DPC-SPI-GA strategy compared to the DPC technique.

“…Among these most effective solutions, we find the two-rotor system or contra-rotating wind power. The latter can increase the power conversion efficiency by 40% compared to that of a single turbine system (STS) [42]. This new method is explained in [43][44][45][46][47].…”

Section: Crwp Modelmentioning

confidence: 99%

Third-Order Sliding Mode Applied to the Direct Field-Oriented Control of the Asynchronous Generator for Variable-Speed Contra-Rotating Wind Turbine Generation Systems

Bizon

2021

Energies

Traditional direct field-oriented control (DFOC) techniques with integral-proportional (PI) controllers have undesirable effects on the power quality and performance of variable speed contra-rotating wind power (CRWP) plants based on asynchronous generators (ASGs). In this work, a commanding technique based on the DFOC technique for ASG is presented on variable speed conditions to minimize the output power ripples and the total harmonic distortion (THD) of the grid current. A new DFOC strategy was designed based on third-order sliding mode (TOSM) control to minimize oscillations and the THD value of the current and active power of the ASG; the designed technique decreases the current THD from ASG and does not impose any additional undulations in different parts of ASG. The designed technique is simply implemented on traditional DFOC techniques in variable speed DRWP systems to ameliorate its effectiveness. Also, the results show that by using the designed TOSM controllers, in addition to regulating the active and reactive powers of the ASG-based variable speed CRWP system, the THD current and active power undulations of the traditional inverters can be minimized simultaneously, and the stator current became more like a sinusoidal form.