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

Chen, Wei; Zhao, Yingying; Zhou, Zhanqing; Yan, Yan; Xia, Changliang

doi:10.6113/jpe.2017.17.2.368

Cited by 13 publications

(6 citation statements)

References 10 publications

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“…In MLI DTC, the duty cycle strategy was developed in [4], [62], [63]. As introduced in [4], the manipulation of voltage vectors within one switching interval was easily determined through the extra voltage vectors.…”

Section: Duty Cycle Strategymentioning

confidence: 99%

A review of direct torque control development in various multilevel inverter applications

Tarusan¹,

Jidin²,

Jamil³

et al. 2020

IJPEDS

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<span>Multilevel inverter (MLI) is commonly utilized in direct torque control (DTC) for medium and high power applications. The additional voltage vectors generated by MLI can be manipulated to achieve the optimal selection for the inverter switching states in the DTC control systems. Previously, a review of DTC which focused more on the two-level inverter for induction motor as well as a review of the multilevel converter in industrial applications had been implemented individually. However, a review on DTC development in MLI was insufficient in both papers. Therefore, this paper aims to give a comprehensive review of the improvement of DTC via various MLI applications. It is reviewed according to the applicable multilevel inverter topologies in the DTC system. The comparison of DTC by using conventional and multilevel inverter is synthesized. Thus, this review paper will hopefully lead researchers in further research activities actively.</span>

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Section: Duty Cycle Strategymentioning

confidence: 99%

A review of direct torque control development in various multilevel inverter applications

Tarusan¹,

Jidin²,

Jamil³

et al. 2020

IJPEDS

View full text Add to dashboard Cite

show abstract

“…Model predictive control (MPC) is considered as the second alternative control strategy that requires a predefined cost function to predict output states to obtain state variables and execute control object optimization [14][15][16][17][18][19][20][21]. Another approach to improving DTC is by controlling the duty-ratio of applied voltage vectors (DDTC) [22,23]. In DDTC, the duty-ratio of applied voltage vectors are adjusted to reduce the ripples of torque and flux.…”

Section: Introductionmentioning

confidence: 99%

Low-Speed Performance Improvement of Direct Torque Control for Induction Motor Drives Fed by Three-Level NPC Inverter

2020

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Classical direct torque control (DTC) is considered one of the simplest and fastest control algorithms in motor drives. However, it produces high torque and flux ripples due to the implementation of the three-level hysteresis torque regulator (HTR). Although, increasing the level of HTR and utilizing multilevel inverters has a great contribution in torque and flux ripples reduction, stator flux magnitude of induction motor (IM) droops at every switching sector transition, particularly at low-speed operation. This problem occurs due to the utilization of a zero voltage vector, where the domination of stator resistance is very high. A simple flux regulation strategy (SFRS) is applied for low-speed operation for DTC of IM. The proposed DTC-SFRS modifies the output status of the five-level HTR depending on the flux error, torque error, and stator flux position. This method regulates the stator flux for both forward and reverse rotational directions of IM with retaining the basic structure of classical DTC. By using the proposed algorithm, the stator flux is regulated, hence pure sinusoidal current waveform is achieved, which results in lower total harmonics distortion (THD). The effectiveness of the proposed DTC-SFRS is verified through simulation and experimental results.

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“…Otherwise, the excessive of PI error slope consequences to the large torque ripple in DTC. Duty cycle-based strategy is another typical approach to improve the performance of DTC as proposed in [21,27,28]. It enables to manipulate the voltage vectors within their stipulated time in each interval switching that directly able to control the torque slope profile.…”

Section: Introductionmentioning

confidence: 99%

The simulation analysis of torque ripple reduction by using optimal voltage vector in DTC fed by five-level CHB inverter

Tarusan

Jidin

Jamil

2020

IJEECS

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<span>In this paper, the improvement of torque ripple reduction will be focused based on the optimal voltage vector. This is attained by using five-level CHB inverter that applies in DTC drive control as a proposed method. The analysis is performed and simulated by using MATLAB/Simulink. In order to support the analysis, the comparison is realized between proposed method and conventional method which it applies two-level inverter. It will be analysed at constant torque region or steady-state operation on different range of operating speed which the speed is controlled by adjusting the motor load. Meaning that, the speed controller is neglected during analysis. Nevertheless, the adjustment of motor load must be applicable to the optimal voltage vector. The look-up table of five-level CHB inverter will become a guideline to select the optimal voltage vector. Therefore, it can maintain the simple structure of DTC hysteresis-based that fed by using five-level CHB inverter. As a result, the torque ripple can be minimized and torque capability can be retained even at low operating speed compared to the conventional DTC.</span>

show abstract

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

Cited by 13 publications

References 10 publications

A review of direct torque control development in various multilevel inverter applications

A review of direct torque control development in various multilevel inverter applications

Low-Speed Performance Improvement of Direct Torque Control for Induction Motor Drives Fed by Three-Level NPC Inverter

The simulation analysis of torque ripple reduction by using optimal voltage vector in DTC fed by five-level CHB inverter

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