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

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5877
Author(s):  
Habib Benbouhenni ◽  
Nicu Bizon
Keyword(s):  
Sliding Mode ◽  
Harmonic Distortion ◽  
Active Power ◽  
Field Oriented Control ◽  
Variable Speed ◽  
Third Order ◽  
Stator Current ◽  
Pi Controllers ◽  
Asynchronous Generator ◽  
And Performance

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.

scholarly journals A Synergetic Sliding Mode Controller Applied to Direct Field-Oriented Control of Induction Generator-Based Variable Speed Dual-Rotor Wind Turbines

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4437
Author(s):  
Habib Benbouhenni ◽  
Nicu Bizon
Keyword(s):  
Reactive Power ◽  
Sliding Mode ◽  
Field Oriented Control ◽  
Variable Speed ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Induction Generators ◽  
Power Point Tracking ◽  
Pi Controllers ◽  
Power Point

A synergetic sliding mode (SSM) approach is designed to address the drawbacks of the direct field-oriented control (DFOC) of the induction generators (IGs) integrated into variable speed dual-rotor wind power (DRWP) systems with the maximum power point tracking (MPPT) technique. Using SSM controllers in the DFOC strategy, the active power, electromagnetic torque, and reactive power ripples are reduced compared to traditional DFOC using proportional-integral (PI) controllers. This proposed strategy, associated with SSM controllers, produces efficient state estimation. The effectiveness of the designed DFOC strategy has been evaluated on variable speed DRWP systems with the MPPT technique.

scholarly journals A comparison study between fuzzy PWM and SVM inverter in NSMC control of stator active and reactive power control of a DFIG based wind turbine systems

2019 ◽  
Vol 8 (1) ◽  
pp. 78
Author(s):  
Habib Benbouhenni
Keyword(s):  
Power Control ◽  
Wind Turbine ◽  
Pulse Width Modulation ◽  
Reactive Power ◽  
Sliding Mode ◽  
Harmonic Distortion ◽  
Active Power ◽  
Wind Turbine System ◽  
Doubly Fed ◽  
Vector Modulation

In this work, we present a comparative study between space vector modulation (SVM) and fuzzy pulse width modulation (FPWM) technique in neuro-sliding mode control (NSMC) of stator reactive and stator active power control of the doubly fed induction generator (DFIG) for wind turbine system (WTS). Two controls approach using NSMC-SVM and NSMC-FPWM control scheme are proposed and compared. The validity of the proposed control techniques is verified by simulation tests of a DFIG. The reactive power, rotor current and stator active power is determined and compared in the above strategies. The obtained results showed that the proposed NSMC with FPWM strategy has stator reactive and active power with low powers ripples and low rotor current harmonic distortion than SVM technique.

scholarly journals Adaptive Backstepping Fractional Fuzzy Sliding Mode Control of Active Power Filter

2019 ◽  
Vol 9 (16) ◽  
pp. 3383 ◽  
Author(s):  
Fei ◽  
Wang ◽  
Cao
Keyword(s):  
Fractional Order ◽  
Control Method ◽  
Fuzzy Controller ◽  
Sliding Mode ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Power Filter ◽  
Fuzzy Sliding Mode ◽  
Fractional Order Controller

An adaptive fractional-order fuzzy control method for a three-phase active power filter (APF) using a backstepping and sliding mode controller is developed for the purpose of compensating harmonic current and stabilizing the DC voltage quickly. The dynamic model of APF is changed to an analogical cascade system for the convenience of the backstepping strategy. Then a fractional-order sliding mode surface is designed and a fuzzy controller is proposed to approximate the unknown term in the controller, where parameters can be adjusted online. The simulation experiments are conducted and investigated using MATLAB/SIMULINK software package to verify the advantage of the proposed controller. Furthermore, the comparison study between the fractional-order controller and integer-order one is also conducted in order to demonstrate the better performance of the proposed controller in total harmonic distortion (THD), a significant index to evaluate the current quality in the smart grid.

scholarly journals Improved Rotor Flux and Torque Control Based on the Third-Order Sliding Mode Scheme Applied to the Asynchronous Generator for the Single-Rotor Wind Turbine

Mathematics ◽  
2021 ◽  
Vol 9 (18) ◽  
pp. 2297
Author(s):  
Habib Benbouhenni ◽  
Nicu Bizon
Keyword(s):  
Wind Turbine ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Torque Control ◽  
Sliding Mode Controller ◽  
Third Order ◽  
Pi Regulator ◽  
Asynchronous Generator ◽  
Rotor Flux ◽  
Traditional Strategy

In this work, a third-order sliding mode controller-based direct flux and torque control (DFTC-TOSMC) for an asynchronous generator (AG) based single-rotor wind turbine (SRWT) is proposed. The traditional direct flux and torque control (DFTC) technology or direct torque control (DTC) with integral proportional (PI) regulator (DFTC-PI) has been widely used in asynchronous generators in recent years due to its higher efficiency compared with the traditional DFTC switching strategy. At the same time, one of its main disadvantages is the significant ripples of magnetic flux and torque that are produced by the classical PI regulator. In order to solve these drawbacks, this work was designed to improve the strategy by removing these regulators. The designed strategy was based on replacing the PI regulators with a TOSMC method that will have the same inputs as these regulators. The numerical simulation was carried out in MATLAB software, and the results obtained can evaluate the effectiveness of the designed strategy relative to the traditional strategy.

scholarly journals Robust Direct Power Control of a DFIG Fed by a Five- Level NPC Inverter Using Neural SVPWM Technique

2021 ◽  
Vol 65 (1) ◽  
pp. 119-128
Author(s):  
Benbouhenni Habib
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Sliding Mode ◽  
Harmonic Distortion ◽  
Active Power ◽  
Direct Power ◽  
Space Vector ◽  
Steady State Operation ◽  
Control Scheme ◽  
Doubly Fed

The work presents a new direct power command (DPC) strategy based on a second order sliding mode controller (SOSMC) of a doubly fed induction generator (DFIG) integrated in a wind energy conversion system (WECS). In the first step we propose to use a five-level inverter based on the neural space vector pulse width modulation (NSVPWM) to supply the DFIG rotor side. This is the harmonic distortion (THD) of the DFIG rotor voltage and then performs provides the power to the grid by the stator side. The traditional DPC with space vector pulse width modulation (DPC-SVPWM) using proportional-integral (PI) controllers has considerable reactive and active power oscillations at a steady-state operation. In order to ensure a robust DFIG DPC-SVPWM technique and minimize the reactive and active power ripples, a SOSMC algorithms is used in the second step. The Simulation results show the efficiency of the designed control scheme especially in terms of the quality of the provided power compared to DPC-SVPWM.

scholarly journals Simplified down sampling factor based modified SVPWM technique for cascaded inverter fed induction motor drive

2020 ◽  
Vol 9 (1) ◽  
pp. 20
Author(s):  
Ravi Kumar Bhukya ◽  
P. Satish Kumar
Keyword(s):  
Performance Analysis ◽  
Induction Motor ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Sine Wave ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Line Voltage ◽  
Stator Current ◽  
And Performance

<p><span>This paper presents a rivew, investigation and performance analysis of novel down samples factor based modified space vector PWM is called clamping SVPWM technique for cascaded Multilevel Invereter fed to Induction motor drive. In this paper the reference sine wave generated as in case of conventional off set injected SVPWM technique is modified by down sampling factor the reference wave by order of 10. The performance analyses of this modulation strategies are analyzed by apply for five level, seven level, nine level and eleven level inverter. The performance analysis of cascaded inverter interms of line voltage, stator current, speed, torque and total harmonic distortion. The results are depicting that PD PWM is more effective among the four proposed PWM technique. It is observed that the CSV Pulse width modulation ensures excellent, close to optimized pulse distribution results compared to SPWM technique and also 11-level inverter beter performance in case of low THD and better foundemental output voltages comapared to 5, 7, 9-level inverter. The proposed technique has been simulated using MATLAB/SIMULINK software. This proposed technique can be applied to N-level multilevel Inverter also.</span></p>

scholarly journals Recent Advances in Model Predictive and Sliding Mode Current Control Techniques of Multiphase Induction Machines

2021 ◽  
Vol 9 ◽  
Author(s):  
Jorge Rodas ◽  
Ignacio Gonzalez-Prieto ◽  
Yassine Kali ◽  
Maarouf Saad ◽  
Jesus Doval-Gandoy
Keyword(s):  
Power Distribution ◽  
High Performance ◽  
Fault Tolerant ◽  
Sliding Mode ◽  
Control Strategies ◽  
Harmonic Distortion ◽  
Current Control ◽  
Control Techniques ◽  
Finite Control ◽  
And Performance

Multiphase machines have attracted the attention of the research and industrial communities due to their advantages, namely better power distribution and fault-tolerant capabilities without extra hardware. However, the multiphase machine requires high-performance control strategies to take advantage of these features. From this perspective, the field-oriented control with the inner current control loop that uses using an explicit modulation stage has been considered the benchmark solution thanks to the reduced harmonic distortion obtained with this regulation strategy. Nevertheless, nonlinear controllers, thanks to their inherent nature, allow exploiting the extra multiphase capabilities in a simplified manner. Consequently, this paper aims to concentrate and discuss the latest developments on nonlinear current control of two of the most popular multiphase electric drive configurations, five-phase and six-phase. Then, this paper covers mainly finite-control-set model predictive control and their variations. Moreover, sliding-mode control is also explained. Finally, this paper includes experimental assessments of the most recent nonlinear current control techniques considering steady-state and transient conditions, stability and performance analysis.

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