Torque ripple reduction in DTC of induction motor driven by three-level inverter with low switching frequency

Lee, Kyo‐Beum; Song, Joong-Ho; Choy, Ick; Yoo, Ji-Yoon

doi:10.1109/63.988836

Cited by 162 publications

(26 citation statements)

References 4 publications

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“…Some authors adapted the DTC to the control of machines powered by inverters of multilevel voltage types [64], indeed, the higher number of control vectors promotes a minimization of the resulting ripple in steady state. In [64,65] a three-level inverter is applied to the DTC, for the reduction of the torque ripples, but the disadvantage of this arrangement is the Table 1 Switching table Sector 1 2 3 4 5 6 H s H Tem Voltage vector , it is mostly known for its robustness towards internal uncertainties (variations of machine parameters), external uncertainties (perturbation due to the load), and phenomena that have been omitted in the modeling [67,68]. The main characteristic of SMC is manifested in the modified control law in a discontinuous manner [69].…”

Section: Typical Improvement Techniques Of Direct Torque Controlmentioning

confidence: 99%

Modern improvement techniques of direct torque control for induction motor drives - a review

Ouanjli¹,

Derouich²,

Ghzizal³

et al. 2019

Prot Control Mod Power Syst

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Conventional direct torque control (DTC) is one of the excellent control strategies available to control the torque of the induction machine (IM). However, the low switching frequency of the DTC causes high ripples in the flux and torque that leads to an acoustic noise which degrades the control performances, especially at low speeds. Many direct torque control techniques were appeared to remedy these problems by focusing specifically on the torque and flux. In this paper, a state of the art review of various modern techniques for improving the performance of DTC control is presented. The objective is to make a critical analysis of these methods in terms of ripples reduction, tracking speed, switching loss, algorithm complexity and parameter sensitivity. Further, it is envisaged that the information presented in this review paper will be a valuable gathering of information for academic and industrial researchers.

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Section: Typical Improvement Techniques Of Direct Torque Controlmentioning

confidence: 99%

Modern improvement techniques of direct torque control for induction motor drives - a review

Ouanjli¹,

Derouich²,

Ghzizal³

et al. 2019

Prot Control Mod Power Syst

View full text Add to dashboard Cite

show abstract

“…For example in Sector1, when the torque and flux demands are +2 and +1 respectively, either SVVs v 15 or v 16 can be employed as the passive vector in conjunction with the active vector, .…”

Section: Torque Ripple Reductionmentioning

confidence: 99%

“…From (13) and (14), general expressions for the slope of active (15) and passive (16) Substituting (15) and (16) into (11) the duty cycle for the LVV when torque demand is high and positive, can be expressed as,…”

Section: Duty Ratio Calculationmentioning

confidence: 99%

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Direct torque control of IPMSM driven by a three level NPC inverter with torque and capacitor voltage ripple reduction

Mohan

Zhang

Foo

2015

2015 IEEE Applied Power Electronics Conference and Exposition (APEC)

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The amalgamation of direct torque control (DTC) and three-level neutral point clamped (3L-NPC) inverter is an exciting prospect for the control of high power interior permanent magnet synchronous machines (IPMSMs). The use of 3L-NPC inverter in DTC schemes in general, is hampered by issues such as neutral point voltage fluctuations and smooth voltage vector switching. The major disadvantages of conventional DTC are variable switching frequency and high torque and flux ripples, especially at low speeds. A novel DTC scheme incorporating a 3L-NPC inverter, utilizing all of its active voltage vectors, is proposed in this paper to overcome the abovementioned shortcomings. Torque and flux ripple reduction is achieved through appropriate application of two separate vectors during each switching cycle. Furthermore, neutral point voltage fluctuations are minimized through the proper selection of redundant short voltage vectors. Simulation results are provided to prove the feasibility and effectiveness of the proposed method.

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“…Most of the past research on DTFC based motor drives mainly concentrated on the development of the inverter control algorithms with less torque ripple as it is the major drawback of DTFC [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. In DTFC scheme the motor actual torque and air gap flux linkage values are compared with their corresponding reference values.…”

Section: Introductionmentioning

confidence: 99%

Online Loss-Minimization-Based Adaptive Flux Observer for Direct Torque and Flux Control of PMSM Drive

Uddin

Zou

Azevedo

2016

IEEE Trans. on Ind. Applicat.

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This paper presents a novel adaptive flux observer based direct torque and flux control (DTFC) of permanent magnet synchronous motor (PMSM) drive. An online loss minimization algorithm (LMA) is developed to estimate the airgap flux so that the motor operates at minimum loss condition while taking the general advantages of DTFC scheme over conventional vector control scheme. The proposed DTFC based PMSM drive incorporating the LMA based flux observer is implemented in real-time using the DSP board DS1104 for a laboratory 5 hp motor. The performance of the proposed LMA based DTFC control of PMSM drive is tested in both simulation and experiment at different operating conditions. 0093-9994 (c) Keywords-Direct torque & flux control, loss minimization, dynamic response, interior permanent magnet synchronous motor, speed control and adaptive flux observer.

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Torque ripple reduction in DTC of induction motor driven by three-level inverter with low switching frequency

Cited by 162 publications

References 4 publications

Modern improvement techniques of direct torque control for induction motor drives - a review

Modern improvement techniques of direct torque control for induction motor drives - a review

Direct torque control of IPMSM driven by a three level NPC inverter with torque and capacitor voltage ripple reduction

Online Loss-Minimization-Based Adaptive Flux Observer for Direct Torque and Flux Control of PMSM Drive

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