A DTC Stator Flux Algorithm for the Performance Improvement of Induction Traction Motors

Van-Tien, Pham; Zheng, Trillion Q.; Yang, Zhe; Lin, Fei; Do, Viet-Dung

doi:10.6113/jpe.2016.16.2.572

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…The merits of DTC include rapid torque response, simple structure (DTC does not require complex coordinate transformation and current regulation), and motor-parameter independence [6], [7]. However, the standard 3L-DTC exhibits large torque ripples due to two reasons.…”

Section: Introductionmentioning

confidence: 96%

Torque Ripple Reduction in Three-Level Inverter-Fed Permanent Magnet Synchronous Motor Drives by Duty-Cycle Direct Torque Control Using an Evaluation Table

Chen¹,

Zhao²,

Zhou³

et al. 2017

Journal of Power Electronics

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In this paper, a direct torque control algorithm with novel duty cycle-based modulation is proposed for permanent magnet synchronous motor drives fed by neutral-point clamped three-level inverters. Compared with the standard DTC, the proposed algorithm can suppress steady-state torque ripples as well as ensure neutral-point potential balance and smooth vector switching. A unified torque/flux evaluation table with multiple voltage vectors and precise control levels is established and used in this method. This table can be used to evaluate the effects of duty-cycle vectors on torque and flux directly, and the elements of the table are independent of the motor parameters. Consequently, a high number of appropriate voltage vectors and their corresponding duty cycles can be selected as candidate vectors to reduce torque ripples by looking up the table. Furthermore, small vectors are incorporated into the table to ensure the neutral-point potential balance with the numerous candidate vectors. The feasibility and effectiveness of the proposed algorithm are verified by both simulations and experiments.

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Section: Introductionmentioning

confidence: 96%

Torque Ripple Reduction in Three-Level Inverter-Fed Permanent Magnet Synchronous Motor Drives by Duty-Cycle Direct Torque Control Using an Evaluation Table

Chen¹,

Zhao²,

Zhou³

et al. 2017

Journal of Power Electronics

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show abstract

“…Like every control method, DTC also suffers some disadvantages. Among the most well-known and studied are high torque ripples, which have been observed in the motor [7]. To overcome this, a variety of * Correspondence: fkorkmaz@karatekin.edu.tr different control approaches, such as artificial intelligence, different inverter topologies, and different control models, have been proposed [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of induction motor drives with model-based predictive torque control

Korkmaz¹

2020

Turk J Elec Eng & Comp Sci

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One of the most important advantages of using modeling and simulation software in design and control engineering is the ability to predict system behavior within specified conditions. This paper presents a novel error vector-based control algorithm that aims to reduce torque ripples predicting flux and torque errors in a conventional vector-controlled induction motor. For this purpose, a new control model has been developed that envisages flux change by applying probabilistic space vectors' torque and flux control. In the proposed predictive control algorithm, flux and torque errors are calculated for each candidate voltage vector. Thus, the optimal output voltage vector that minimizes the error is determined for the next sampling time. A MATLAB/Simulink model of the proposed control algorithm was formed and experimental studies were conducted to test the applicability and effectiveness of the proposed method using a dSpace 1104 controller board. The results obtained by comparing the effects of the conventional torque control and the proposed predictive direct torque control methods on the motor performance are presented under various speed and loading conditions. The experimental results prove that the proposed algorithm reduced the torque ripples of the motor remarkably when compared to the conventional torque control. The proposed method stands out with its simple structure due to simplified cost function with the flux model prediction approach and easy applicability with satisfactory results.

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A Position Control With a Field Programmable Gate Array-Sun-Tracking System for Photovoltaic Panels

Krim

Gdaim

Mtibaa

et al. 2018

Advances in Systems Analysis, Software Engineering, and High Performance Computing

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Photovoltaic system applications should operate under good conditions. The maximum power point depends on the sunlight angle on the panel surface. In this chapter, an induction motor (IM) controlled with a direct torque control (DTC) is used to control the photovoltaic panel position. The conventional DTC is chosen thanks to its capability to develop the maximum of torque when the motor is standstill. However, the DTC produces a torque with high ripples and it is suffer from the flux demagnetization phenomenon, especially at low speed. To overcome these problems, two DTC approaches are proposed in this chapter: (1) the DTC based on the fuzzy logic and (2) the DTC based on space vector modulation (SVM) and proportional integral (PI) controllers (DTC-SVM-PI). The suggested approaches are implemented on a field programmable gate array (FPGA) Virtex 5 circuit in order to reduce the sampling period of the system and the delay in the control loop. The simulation and hardware implementation results demonstrate that the DTC-SVM-PI offers best the results in terms of ripples.

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A DTC Stator Flux Algorithm for the Performance Improvement of Induction Traction Motors

Cited by 3 publications

References 21 publications

Torque Ripple Reduction in Three-Level Inverter-Fed Permanent Magnet Synchronous Motor Drives by Duty-Cycle Direct Torque Control Using an Evaluation Table

Torque Ripple Reduction in Three-Level Inverter-Fed Permanent Magnet Synchronous Motor Drives by Duty-Cycle Direct Torque Control Using an Evaluation Table

Performance improvement of induction motor drives with model-based predictive torque control

A Position Control With a Field Programmable Gate Array-Sun-Tracking System for Photovoltaic Panels

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