Search results for: S. Alireza Davari

Items from 1 to 18 out of 18 results

article

Torque ripple reduction of DFIG by a new and robust predictive torque control method

Mohsen Mokhtari Vayeghan, S. Alireza Davari

IET Renewable Power Generation > 2017 > 11 > 11 > 1345 - 1352

A torque ripple minimising and robust predictive torque control of a doubly fed induction generator (DFIG) is proposed. The proposed method is based on a novel cost function and a robust predictive model. The aim of the proposed cost function is torque ripple reduction beside the torque and flux control. This method predicts the torque and the flux those will be resulted by the feasible voltage vectors...

chapter

Virtual flux model predictive direct power control (VF-MPDPC) of afe rectifier with new current prediction method and negative sequence elimination

Mohammad Hosein Saeedinia, S. Alireza Davari

2017 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE) > 113 - 118

2017 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE)

In this paper a simple method is presented in order to control a three-phase active front end (AFE) rectifier under both balanced and unbalanced network voltage conditions which consists in virtual flux based model predictive direct power control (VF-MPDPC) with a new approach on the current and power prediction. A new approach for current prediction in the unbalanced condition is proposed. The prediction...

article

Finite Control Set Model Predictive Torque Control of Induction Machine With a Robust Adaptive Observer

Fengxiang Wang, S. Alireza Davari, Zhe Chen, Zhenbin Zhang, more

IEEE Transactions on Industrial Electronics > 2017 > 64 > 4 > 2631 - 2641

This paper proposes a finite control set model predictive torque control (PTC) of induction machine with an adaptive observer. Model reference adaptive system (MRAS) can accurately estimate the rotor speed. However, the encoderless PTC method requires not only the estimated rotor speed but also the estimated fluxes. A sliding mode stator voltage model observer is applied as the reference model in...

chapter

Predictive torque control of DFIG with torque ripple reduction

Mohsen Mokhtari, S. Alireza Davari

2016 IEEE International Conference on Power and Energy (PECon) > 763 - 768

2016 IEEE International Conference on Power and Energy (PECon)

A novel predictive direct torque control (DTC) based on cost function for doubly fed induction generator is proposed in this paper. Finite control set model predictive control (FCS-MPC) predicts the torque and rotor flux for the next duration of switching and chooses and applies the best voltage vector for adjusting the electromagnetic torque and the rotor flux in their reference values. This paper...

chapter

Efficiency optimization and power management in a stand-alone photovoltaic (PV) water pumping system

Behzad Mirshekarpour, S. Alireza Davari

2016 7th Power Electronics and Drive Systems Technologies Conference (PEDSTC) > 427 - 433

2016 7th Power Electronics and Drive Systems Technologies Conference (PEDSTC)

In this paper a power management strategy for the stand alone PV based system for water pumping is proposed. The mentioned system is practical for off-grid rural areas. The main part of the system includes PV panels, three phase induction motor and the battery. PV panel voltage is delivered to the inverter by a boost converter. For the battery charging and discharging a simple bidirectional converter...

article

Predictive Direct Angle Control of Induction Motor

S. Alireza Davari

IEEE Transactions on Industrial Electronics > 2016 > 63 > 8 > 5276 - 5284

Finite control set model predictive control (FCS-MPC) has been accepted as an effective and feasible method in variable-speed drive applications. Considering the discrete nature of the converters and using a cost function for state selection reduce the computational burden despite of having a precise control. In this paper, FCS-MPC has been used to develop a novel method for induction motor control...

chapter

Voltage model observer based encoderless predictive control of DFIG for wind tubine applications

S. Alireza Davari, Davood Arab Khburi

The 6th Power Electronics, Drive Systems & Technologies Conference (PEDSTC2015) > 603 - 608

2015 6th Power Electronics, Drives Systems & Technologies Conference (PEDSTC)

An encoderless predictive control method for doubly fed induction generator is proposed in this paper. Doubly fed induction generators are commonly used in wind turbine applications because of fast dynamic response and grid synchronizing capability. Dependency on speed measurement is an important drawback in wind turbine applications. A reduced order model based observer is used to estimate the torque,...

chapter

Predictive rotor control of DFIG supplied with back-back converters for variable speed wind turbine application

S. Alireza Davari

2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE) > 1415 - 1419

2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE)

Fast response of doubly fed induction generators is very important for grid synchronization where they are used for electrical energy generation in wind units with variable speed turbine. Predictive rotor control method is proposed in this paper. The cost function based predictive control is used to control the torque and flux of the rotor. A novel torque ripple reduction method is proposed. Therefore,...

chapter

Using predictive control and q-ZSI to drive an induction motor supplied by a PV generator

S. Alireza Davari, Davood Arab Khaburi

The 5th Annual International Power Electronics, Drive Systems and Technologies Conference (PEDSTC 2014) > 61 - 65

2014 5th Power Electronics, Drive Systems & Technologies Conference (PEDSTC)

A quasi Z source inverter (q-ZSI) is utilized for driving induction motor fed by a standalone PV generator. The q-ZSI let the system to contain an energy storage part without any need for a charging circuit. Predictive torque control (PTC) is used to drive the induction motor because of its fast characteristic. PTC method can consider the variations of the inverter's input voltage and exert the proper...

article

An Encoderless Predictive Torque Control for an Induction Machine With a Revised Prediction Model and EFOSMO

Fengxiang Wang, Zhenbin Zhang, S. Alireza Davari, Reza Fotouhi, more

IEEE Transactions on Industrial Electronics > 2014 > 61 > 12 > 6635 - 6644

The finite control state predictive torque control (FCS-PTC) method is known to produce a fast response. However, when compared with the direct torque control (DTC) method, which is inherently encoderless, the FCS-PTC method has a disadvantage because of its speed dependence. An encoderless FCS-PTC method that is based on a revised prediction model for an induction machine is proposed and experimentally...

chapter

Speed-independent FCS-model predictive torque control for IM based on SMO

Fengxiang Wang, Peter Stolze, Ralph Kennel, S. Alireza Davari, more

2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC) > LS7b-1.1-1 - LS7b-1.1-5

2012 EPE-ECCE Europe Congress

In this paper, a speed-independent finite control set model predictive torque control for induction machine based on sliding mode observer is proposed. With this new method, the finite control set model predictive controller is designed as speed-independent. For the estimation of the flux, the sliding mode observer is applied. The sliding mode observer is designed as the speed-independent. In this...

chapter

Inherent FCS-Model predictive torque control for induction machine without Encoder

Fengxiang Wang, Peter Stolze, Ralph Kennel, S. Alireza Davari, more

International Symposium on Power Electronics Power Electronics, Electrical Drives, Automation and Motion > 1069 - 1072

2012 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM 2012)

In this paper, an inherent finite control set model predictive torque control for induction machine without Encoder is proposed. With this inherent method, the model predictive controller is designed as speed-independent. For the estimation of the stator flux, the reduced order observer is applied. In this way, predictive torque controller and observer are not dependent on the speed. The influence...

article

An Improved FCS–MPC Algorithm for an Induction Motor With an Imposed Optimized Weighting Factor

S. Alireza Davari, Davood Arab Khaburi, Ralph Kennel

IEEE Transactions on Power Electronics > 2012 > 27 > 3 > 1540 - 1551

In this paper, an improved finite control set–model predictive control (FCS–MPC) with an optimized weighting factor is presented. The main goal of this paper is reducing the torque ripples when the FCS–MPC is implemented by means of the two-level inverter. For this purpose, the weighting factor is calculated via an optimization method. The optimization is based on dividing the control interval into...

article

Using Full Order and Reduced Order Observers for Robust Sensorless Predictive Torque Control of Induction Motors

S. Alireza Davari, Davood Arab Khaburi, Fengxiang Wang, Ralph M. Kennel

IEEE Transactions on Power Electronics > 2012 > 27 > 7 > 3424 - 3433

In this paper, two kinds of observer-based sensorless predictive torque control methods are proposed. The predictive method is based on examining feasible voltage vectors (VVs) in a prescribed cost function. The VV that minimizes the cost function is selected. A novel robust prediction model is presented. The prediction model includes sliding mode feedbacks. The feedback gains are assigned by the...

chapter

Sensorless model predictive torque control for induction machine by using the sliding mode full-order observer

Fengxiang Wang, S. Alireza Davari, Davood A. Khaburi, Ralph Kennel

2011 Symposium on Sensorless Control for Electrical Drives > 114 - 117

2011 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)

In this paper, a strategy for the control of voltage-source inverter-fed induction machines is proposed. The method uses a sensorless predictive algorithm to implement the torque control. With the sliding mode full-order observer the flux and speed are estimated, which are applied in the Model Predictive Controller. The experimental results are presented.

chapter

A comparative study of DTC-SVM with three-level inverter and an improved predictive torque control using two-level inverter

S Alireza Davari, Ehsan Hasankhan, Davood Arab Khaburi

2011 2nd Power Electronics, Drive Systems and Technologies Conference > 379 - 384

2011 2nd Power Electronics, Drive Systems & Technologies Conference (PEDSTC 2011)

In this paper two methods of torque control for induction motor have been investigated. First DTC method is implemented by using PI regulators and three-level inverter. Then an improved predictive torque control is developed and performed with two-level inverter. In the proposed predictive control the next torque and flux are predicted by discrete model of motor and inverter. Afterward the feasible...

chapter

An improved Finite Control Set-Model Predictive Control (FCS-MPC) algorithm with imposed optimized weighting factor

S. Alireza Davari, Davood A. Khaburi, Peter Stolze, Ralph Kennel

Proceedings of the 2011 14th European Conference on Power Electronics and Applications > 1 - 10

2011 14th European Conference on Power Electronics and Applications (EPE)

In this paper an improved FCS-MPC algorithm with optimized weighting factor is presented. The main goal is reducing the torque ripples for the two-level inverter utilization. The weighting factor is optimized based on dividing the control interval in two parts. The method is validated by simulations and experiments.

chapter

A comparative study of matrix converter based DTC with complete vectors application and an improved predictive torque control using two-level inverter

S. Alireza Davari, F. Montazeri, F. Montazeri, D.A. Khaburi

2009 International Conference on Electrical and Electronics Engineering - ELECO 2009 > I-410 - I-414

2009 6th International Conference on Electrical and Electronics Engineering

In this paper two methods of torque control for induction motor have been investigated. First, DTC method is implemented by using complete voltage vectors of the matrix converter. Second, an improved predictive torque control is developed and performed with two-level inverter. In the proposed predictive control the next torque and flux are predicted by discrete model of motor and inverter. Afterward...

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Keywords

TORQUE (12)
TORQUE CONTROL (11)
STATORS (10)
PREDICTIVE CONTROL (8)
ROTORS (8)
MATHEMATICAL MODEL (7)
OBSERVERS (7)
COST FUNCTION (6)
PREDICTIVE MODELS (6)
VOLTAGE CONTROL (6)
INDUCTION MOTOR (5)
DFIG (4)
INDUCTION MACHINE (4)
PREDICTIVE TORQUE CONTROL (4)
INDUCTION MACHINES (3)
INDUCTION MOTORS (3)
INVERTERS (3)
OBSERVER (3)
DISCRETE MODEL (2)
HYSTERESIS MOTORS (2)
INVERTORS (2)
MACHINE VECTOR CONTROL (2)
PREDICTIVE TORQUE CONTROL (PTC) (2)
SWITCHES (2)
TORQUE RIPPLE REDUCTION (2)
TWO-LEVEL INVERTER (2)
WIND TURBINE (2)
ACTIVE TIME CALCULATION (1)
ADAPTATION MODELS (1)
AEROSPACE ELECTRONICS (1)
AFE RECTIFIER (1)
ALGORITHM DESIGN AND ANALYSIS (1)
ANGLE CONTROL (1)
ASYNCHRONOUS GENERATORS (1)
BATTERIES (1)
CLOSED LOOP SYSTEMS (1)
COMPLETE VOLTAGE VECTORS (1)
DC MOTORS (1)
DIRECT TORQUE CONTROL (1)
DIRECT TORQUE CONTROL-SPACE VECTOR MODULATION (1)
DOUBLY FED INDUCTION GENERATOR (1)
DTC (1)
EFFICIENCY OPTIMIZATION (1)
ELECTROMAGNETIC TORQUE (1)
ELECTROMAGNETICS (1)
ENCODERLESS CONTROL (1)
FCS-MPC (1)
FINITE CONTROL SET MODEL PREDICTIVE CONTROL (FCS-MPC) (1)
FINITE CONTROL SET-MODEL PREDICTIVE CONTROL (1)
FLUX CONTROL (1)
FLUX PREDICITON (1)
HYSTERESIS (1)
IMPROVED PREDICTIVE TORQUE CONTROL (1)
INDUCTION MOTOR CONTROL (1)
INDUCTION MOTOR DRIVE (1)
MACHINE CONTROL (1)
MAGNETIC FLUX (1)
MATRIX CONVERTER (1)
MATRIX CONVERTERS (1)
MAXIMUM POWER POINT TRACKERS (1)
MODEL PREDICTIVE CONTROL (1)
MODEL PREDICTIVE CONTROL (MPC) (1)
MODEL PREDICTIVE TORQUE CONTROL (1)
MPPT (1)
NOVEL CLOSED-LOOP PREDICTION MODEL (1)
NOVEL COST FUNCTION (1)
OPTIMIZATION (1)
PHOTOVOLTAIC (PV) GENERATOR (1)
PI CONTROL (1)
PI REGULATORS (1)
Q MEASUREMENT (1)
QUASI- Z SOURCE INVERTER (Q-ZSI) (1)
RADIO ACCESS NETWORKS (1)
ROBUST CONTROL (1)
ROBUST PREDICTIVE TORQUE CONTROL METHOD (1)
ROBUSTNESS (1)
ROTOR FLUX (1)
SENSORLESS (1)
SENSORLESS DRIVE (1)
SET THEORY (1)
SLIDING MODE OBSERVER (1)
SMO (1)
STAND-ALONE PV SYSTEM (1)
STATOR WINDINGS (1)
THREE-LEVEL INVERTER (1)
TORQUE PREDICITON (1)
TORQUE RIPPLE MINIMISING (1)
TORQUE RIPPLES (1)
TWO-LEVEL VSI (1)
VARIABLE SPEED WIND TURBINE (1)
VECTORS (1)
VIRTUAL FLUX (1)
VOLTAGE VECTORS (1)
WEIGHTING FACTOR (1)
WIND TURBINES (1)
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INFONA - science communication portal

Search results for: S. Alireza Davari

Torque ripple reduction of DFIG by a new and robust predictive torque control method

Virtual flux model predictive direct power control (VF-MPDPC) of afe rectifier with new current prediction method and negative sequence elimination

Finite Control Set Model Predictive Torque Control of Induction Machine With a Robust Adaptive Observer

Predictive torque control of DFIG with torque ripple reduction

Efficiency optimization and power management in a stand-alone photovoltaic (PV) water pumping system

Predictive Direct Angle Control of Induction Motor

Voltage model observer based encoderless predictive control of DFIG for wind tubine applications

Predictive rotor control of DFIG supplied with back-back converters for variable speed wind turbine application

Using predictive control and q-ZSI to drive an induction motor supplied by a PV generator

An Encoderless Predictive Torque Control for an Induction Machine With a Revised Prediction Model and EFOSMO

Speed-independent FCS-model predictive torque control for IM based on SMO

Inherent FCS-Model predictive torque control for induction machine without Encoder

An Improved FCS–MPC Algorithm for an Induction Motor With an Imposed Optimized Weighting Factor

Using Full Order and Reduced Order Observers for Robust Sensorless Predictive Torque Control of Induction Motors

Sensorless model predictive torque control for induction machine by using the sliding mode full-order observer

A comparative study of DTC-SVM with three-level inverter and an improved predictive torque control using two-level inverter

An improved Finite Control Set-Model Predictive Control (FCS-MPC) algorithm with imposed optimized weighting factor

A comparative study of matrix converter based DTC with complete vectors application and an improved predictive torque control using two-level inverter

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