scholarly journals DSP-HIL Comparison between IM Drive Control Strategies

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 921
Author(s):  
Luis E. Ortega-García ◽  
Daniela Rodriguez-Sotelo ◽  
Jose C. Nuñez-Perez ◽  
Yuma Sandoval-Ibarra ◽  
Francisco J. Perez-Pinal
Keyword(s):  
Control Strategies ◽  
Dynamic Performance ◽  
Torque Control ◽  
Hardware In The Loop ◽  
Control Techniques ◽  
Drive Control ◽  
Traditional Structure ◽  
Three Phase ◽  
Advanced Control ◽  
Flux Response

Due to their high robustness and simple maintenance, induction motors (IM) are commonly applied in household appliances and industry. Recently, advanced control techniques are being applied to traditional controllers such as field-oriented control (FOC) and torque control (DTC). Dynamic performance improvement, hardware simplification and software resource reduction are some of the characteristics reported by these advanced techniques, where a comparison of the new proposal with a traditional structure is generally reported for its validation. However, an assessment between advanced techniques is usually missing. Therefore, we evaluated the traditional FOC and DTC with two additional advanced control modifications, fuzzy and predictive. The resulting six structures were numerically evaluated using MATLAB SIMULINK in a 5 HP four-pole three-phase IM and practically validated using hardware-in-the-loop (Typhoon HIL 402 and DSP TMS320F28035). Speed, torque, phase current and flux response are reported for the six controllers and practical insights are summarized.

scholarly journals Comparison of Conventional and Modified Direct Torque Control of Three-Phase Induction Motor Using Three-Level Flying Capacitor Inverter

2021 ◽  
pp. 431-438
Author(s):  
Amirah J. Mohammed ◽  
◽  
Raaed F. Hassan
Keyword(s):  
Induction Motor ◽  
Control Strategies ◽  
Direct Torque Control ◽  
Torque Control ◽  
Switching Frequency ◽  
Space Vector ◽  
The Third ◽  
Three Phase ◽  
Multi Level ◽  
Vector Modulation

The work presented in this paper aims to compare the effectiveness of different control strategies to improve the performance of the three-phase Induction Motor (IM). The Conventional Direct Torque Control (CDTC) was employed as the first strategy for driving the IM. This control strategy causes high ripples in the IM's torque and speed due to the hysteresis comparators and a variable switching frequency due to the look-up table. A modified DTC strategy based on Space Vector Modulation (DTC-SVM) was chosen as a second strategy to enhance the performance of the IM using the two-level inverter. This method, which leads to the reduction of the torque and speed ripples and achieves constant switching frequency. As the multi-level inverter becomes most popular than the two-level inverter, the third strategy is devoted to adopting the three-level flying capacitor inverter (TLFCMLI) -based DTC-SVM. The third strategy uses the method of mapping the multi-level space vector based on basic two-level SVM. Matlab/Simulink software package is utilized to implement the suggested controllers. Simulation results show that the DTC-SVM based on TLFCMLI significantly enhances the IM's performance compared with the other two strategies from the voltage and current profiles, torque, and speed points of view.

Development of Brushless D.C. Motor Drive System for Teaching Purposes Using Various PWM Control Techniques

2012 ◽  
Vol 49 (3) ◽  
pp. 210-231 ◽  
Author(s):  
Nadia Tadrist ◽  
Houcine Zeroug ◽  
Boussad Boukais
Keyword(s):  
Student Satisfaction ◽  
Test Bench ◽  
Control Strategies ◽  
Motor Drive ◽  
Real Time Control ◽  
Matlab Simulink ◽  
Control Techniques ◽  
Time Control ◽  
Drive Control ◽  
Motor Drive System

In this paper, a test bench was developed for teaching purposes to enhance power electronics and real time control of a brushless d.c. motor. Particular emphasis was placed on PWM techniques and theoretical signal generation using a MATLAB/Simulink environment and experimentally with a DSP programming kit. First, a model was developed in MATLAB/Simulink derived from electrical and mechanical equations for the 120° mode. The control strategies implemented involved two PWM techniques, namely soft and hard switching. The system was built in such a way that students are able to carry out modelling and confirm their results through the test bench using these techniques. The approach used has been effective in generating student satisfaction. Improvements in student learning are evident with regard to the drive control applications, either as a variable speed drive or in embedded systems.

Application and Simulation of SVPWM Control Techniques in Three-Phase PV Grid-Connected Inverter

2013 ◽  
Vol 415 ◽  
pp. 81-88
Author(s):  
Yang Xue ◽  
Yuan Li ◽  
Jia Dong Zhang ◽  
Jing Lin ◽  
Jun Tao Yang
Keyword(s):  
Pulse Width Modulation ◽  
Control Method ◽  
Dynamic Performance ◽  
Control Technique ◽  
Pi Control ◽  
Loop Control ◽  
Control Techniques ◽  
Three Phase ◽  
Grid Connected Inverter ◽  
Pv Grid

The space vector pulse width modulation (SVPWM), as a new kind of vector control technique, has the advantages of high voltage utilization, less distorted output, simple control method, etc. In this paper, the control technique is applied to three-phase photovoltaic (PV) grid-connected inverter system. It uses double loop control method combined with PI control technique. The simulation model of PV grid-connected inverter system is established in Matlab/Simulink. The simulation results show that the application of SVPWM technique effectively improves the dynamic performance of PV grid inverter system and the THD of grid-connected current is low.

scholarly journals Direct torque control of IM using PID controller

2020 ◽  
Vol 10 (1) ◽  
pp. 617
Author(s):  
Ali Najim Abdullah ◽  
Mohammed Hasan Ali
Keyword(s):  
Pid Controller ◽  
High Performance ◽  
Dynamic Performance ◽  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Voltage Source ◽  
Stator Flux ◽  
Flux Response

Direct torque control "DTC" technique is one of a high performance control system of an AC motor drive, which was proposed after the vector oriented control scheme during the resent 25 years. It has been developed rapidly for its concise system scheme, transient and dynamic performance. The DTC mechanism consists of voltage vector selection table, two hysteresis comparators and two estimators one for stator flux and another for electromagnetic torque. DTC is directly control torque and flux by using Voltage Source Inverter VSI, space vector and stator flux orientation and indirect speed regulated. A several control techniques can be used for improving the torque and flux performance. In this paper, the DTC with Proportional-Integral-Derivative (PID) controller used to improve the starting and dynamic performance of asynchronous motor AM, which gives good torque and flux response, best speed control and also minimize the unacceptable torque ripple. The mathematical model of DTC with PID controller of 3-phase induction motor IM are simulated under Matlab-Simulink. Therefore, the DTC based on PID controller has good performance of IM compared to classical DTC for starting, running state and also during change in load.

scholarly journals Direct Torque Control System for a Three Phase Induction Motor With Fuzzy Logic Based Speed Controller

2010 ◽  
Vol 6 (2) ◽  
pp. 131-138
Author(s):  
Turki Abdalla ◽  
Haroution Hairik ◽  
Adel Dakhil
Keyword(s):  
Fuzzy Logic ◽  
Induction Motor ◽  
Fuzzy Logic Controller ◽  
Dynamic Performance ◽  
Direct Torque Control ◽  
Speed Control ◽  
Pi Controller ◽  
Torque Control ◽  
Speed Controller ◽  
Three Phase

This paper presents a method for improving the speed profile of a three phase induction motor in direct torque control (DTC) drive system using a proposed fuzzy logic based speed controller. A complete simulation of the conventional DTC and closed-loop for speed control of three phase induction motor was tested using well known Matlab/Simulink software package. The speed control of the induction motor is done by using the conventional proportional integral (PI) controller and the proposed fuzzy logic based controller. The proposed fuzzy logic controller has a nature of (PI) to determine the torque reference for the motor. The dynamic response has been clearly tested for both conventional and the proposed fuzzy logic based speed controllers. The simulation results showed a better dynamic performance of the induction motor when using the proposed fuzzy logic based speed controller compared with the conventional type with a fixed (PI) controller.

Robust control of a DC-DC three-port isolated converter

2021 ◽  
pp. 014233122110029
Author(s):  
Clauson SN Rios ◽  
Fabricio G Nogueira ◽  
Bismark C Torrico ◽  
Walter Barra Junior
Keyword(s):  
Robust Control ◽  
Control Strategies ◽  
State Space Model ◽  
Pole Placement ◽  
Solar Irradiation ◽  
Linear Matrix ◽  
Hardware In The Loop ◽  
Photovoltaic Panel ◽  
Control Techniques ◽  
Decentralized Controllers

This work presents the design of state-feedback robust control law for a DC-DC three-port isolated converter, which interfaces a photovoltaic panel, a rechargeable battery, and an isolated output DC bus. First, the converter is represented through a state-space model that considers disturbances in both the photovoltaic and bidirectional (battery) input ports. The system is linearized around an average operational point, such that robust control techniques can be applied. Due to varying solar irradiation, battery charge, and load levels, the converter is subjected to step-like disturbances. The proposed controller is designed to maintain stabilization and voltage tracking performance in the presence of these disturbances. This approach is different from multiport control strategies usually employed in the literature, which are based on decentralized controllers that require the use of decoupling techniques that can lead to control problems. To ensure robustness, stabilization, and voltage tracking, an [Formula: see text] approach with pole placement restrictions and based on linear matrix inequality (LMI) constraints is formulated and solved. Finally, the performance of the proposed controller has been verified via hardware-in-the-loop (HIL) experiments and compared with a decentralized control strategy.

scholarly journals Efficient Control of a Three Phase Grid Connected PV System

2021 ◽  
Vol 297 ◽  
pp. 01012
Author(s):  
Hicham Bahri ◽  
Mohamed Bahri ◽  
Mohamed Aboulfatah ◽  
M’hammed Guisser ◽  
El malah Mohammed ◽  
...  
Keyword(s):  
Control Strategy ◽  
High Efficiency ◽  
Control Strategies ◽  
Dynamic Performance ◽  
Atmospheric Condition ◽  
Photovoltaic System ◽  
Voltage Source ◽  
Good Precision ◽  
Pv System ◽  
Three Phase

This paper presents a new control strategy of a photovoltaic system, which consists of a photovoltaic generator PVG coupled to a three phase load and three phase grid by a three phase voltage source inverter VSI without DC-DC converter. The controller is designed by using Backstepping method based on d-q transformation of a new model of the global system. The main goals of this control strategy are to achieve the maximum power point MPPT with very good precision and the unity power factor in level of the grid power flow. Mathematical analysis demonstrate the asymptotic stability of the controlled system and simulation results proved that the controller has achieved all the objectives with high dynamic performance in presence of atmospheric condition changes. Moreover, the proposed controller shows a very good robustness under system disturbance, which presents the most important advantage of this controller compared to the other control strategies. Furthermore, this controller can operate with a high efficiency with any kind of the load.

scholarly journals Matrix Converter Control Strategies and Modulation Techniques

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1176-1182
Keyword(s):  
Control Strategies ◽  
Matrix Converter ◽  
Phase 3 ◽  
Control Techniques ◽  
Three Phase ◽  
Modulation Techniques ◽  
The Matrix ◽  
New Varieties ◽  
Research Achievement ◽  
And Control

The matrix converter is an variety of restrained semiconductor changeovers that interfaces straightforwardly to the three-phase (3-Ø) supply to the 3-Ø load. This paper presents the cutting edge see in the improvement of this converter, beginning with a concise recorded survey. A significant piece of this paper is discourse of the most significant modulation and control techniques grew as of late. Uncommon consideration is apt to current contemporary technologies cultivated to take care of commutation issue. certain new varieties of energy bidirectional changeovers associated in a exclusive module and certain pragmatic outcome akin to the feasible appeal of this methods like over voltage safety, accustom of filtrate, and ride-through skill are further presented. Ultimately, this paper consists of simulation blocks and their corresponding results and also relation between different control techniques. Over the most recent couple of years, an expansion in research achievement obsolete watched, carrying this analysis confining to the modern requisition.

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