Direct Torque Control of Five-Phase Induction Motor With Common-Mode Voltage and Current Harmonics Reduction

Tatte, Yogesh; Aware, Mohan V.

doi:10.1109/tpel.2016.2644988

Cited by 44 publications

(31 citation statements)

References 28 publications

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“…According to the constructed current model in (23) and the constructed voltage model in (37), the modified stator flux observer based on the defined modified variables is proposed as shown in Fig. 3.…”

Section: /3 L Sσ I Xsα and 3/5 L Sσ Imentioning

confidence: 99%

Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Lin

Huang

Jiang

et al. 2019

IET Electric Power Applications

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A position sensor is usually required in the existing fault-tolerant direct torque control (FT-DTC) system for the multiphase permanent magnet synchronous motor (PMSM). Thus, the volume, weight, and cost of the system is increased, and the reliability is decreased. The conventional high-performance position sensorless strategies for the multiphase motor under fault-free condition cannot be directly applied to FT-DTC system. To improve this situation, a high-speed position sensorless FT-DTC strategy for a six-phase symmetrical winding PMSM with two opened phases is proposed in this study. Firstly, modified variables and a new rotating coordinate system are defined to achieve the symmetrical and decoupled mathematical model. Secondly, a stator flux observer based on the modified variables and a new coordinate system is proposed. According to the current model of modified stator flux, the estimated modified stator current can be achieved. Then, the estimated error of the modified stator current is sent to the integrator of the modified stator flux observer to correct the voltage model. Finally, the proposed stator flux observer is applied in FT-DTC for six-phase PMSM with two opened phases to realize the position sensorless operation at high speed. The experimental results verify the feasibility and effectiveness of the proposed strategy.

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Section: /3 L Sσ I Xsα and 3/5 L Sσ Imentioning

confidence: 99%

Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Lin

Huang

Jiang

et al. 2019

IET Electric Power Applications

View full text Add to dashboard Cite

show abstract

“…Many control topologies have been presented for controlling the operation of the FPIM drives so that an optimal performance can be obtained from the drive in terms of low ripple contents, high efficiency, and ease of practical implementation. e direct torque control (DTC) and field oriented control (FOC) are considered as the most used control topologies for the majority of electric machine drives [13][14][15][16]. Both techniques have contributed effectively to improving the dynamic performance of the FPIM drive, but on the other hand they have suffered from some problems.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the DTC control approach has managed to reduce the system complexity and achieve fast dynamic response as well. However, it has suffered from the remarkable ripples content in the controlled variables [15,16].…”

Section: Introductionmentioning

confidence: 99%

Deadbeat-Based Model Predictive Voltage Control for a Sensorless Five-Phase Induction Motor Drive

Mossa

Quynh

Echeikh

et al. 2020

Mathematical Problems in Engineering

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This paper introduces a direct model predictive voltage control (DMP VC) for a sensorless five-phase induction motor drive. The operation of the proposed sensorless DMP VC is based on the direct control of the applied stator voltages instead of controlling the torque and flux as in model predictive direct torque control (MP DTC). Thus, the simplicity of the control system is enhanced, which saves the computational time and reduces the commutation losses as well. The methodology based on which the proposed sensorless DMP VC performs its operation depends on minimizing a cost function that calculates the error between the reference and actual values of the direct and quadrature (d-q) axes components of stator voltages. The reference values of d-q components of stator voltages are obtained through incorporating the deadbeat control within the proposed model predictive system. A robust back-stepping observer is proposed for estimating the speed, stator currents, rotor flux, and rotor resistance. The validity of the proposed sensorless DMP VC is confirmed through performing detailed and extensive comparisons between the proposed DMP VC and MP DTC approach. The obtained results state that the drive is exhibiting better performance under the proposed DMP VC with less ripples content and reduced computational burden. Moreover, the proposed back-stepping observer has confirmed its effectiveness in estimating the speed and other variables for a wide range of speed operation.

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“…Most of the proposed methods above are based on the injection of common-mode voltage and high-frequency circulating current. Although it is the most effective method, the injection of commonmode voltage on the stator windings will produce problems such as shaft voltage, leakage current, bearing current, electromagnetic interference, and so on, which may damage the bearings of generator, cause breakdown of winding insulation, and eventually lead to a reduction in their lifetime [31][32][33][34]. Furthermore, by injecting high-frequency current, the arm current will be increased several times, and this will bring new problems.…”

Section: Introductionmentioning

confidence: 99%

Modified MMC and its capacitor voltage ripple suppression method employed in medium‐voltage wind generator system

Guan

Huang

2019

IET Power Electronics

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Modular multilevel converter (MMC) is widely used in medium-and high-voltage applications, but there are large capacitor voltage ripples on the sub-modules (SMs) when applied to low-speed applications, such as wind generator system. The method based on the injection of common-mode voltage and high-frequency current is the most effective solution at present, but it will bring new problems. To solve these problems, a modified MMC is proposed in this study. Firstly, coupled inductors and LC resonance circuit are adopted as the power transfer channel between the upper arm and lower arm of the MMC, to eliminate the low-frequency voltage ripple. The theoretical analysis and design guideline of the coupled inductors and LC resonance circuit are discussed in detail before the explanation of SM voltage fluctuation suppression method. Secondly, an improved voltage fluctuation suppression method, named limited compensation method, is presented to replace the conventional full compensation method to decrease the magnitude of injected high-frequency current, thereby reducing the current ratings of power devices, size of inductors, and the cost of system. In the end, MATLAB/SIMULINK simulations and a 2 kW down-scaled prototype are performed to validate the effectiveness of the proposed solution and its control scheme.

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Direct Torque Control of Five-Phase Induction Motor With Common-Mode Voltage and Current Harmonics Reduction

Cited by 44 publications

References 28 publications

Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Position sensorless direct torque control for six‐phase permanent magnet synchronous motor under two‐phase open circuit

Deadbeat-Based Model Predictive Voltage Control for a Sensorless Five-Phase Induction Motor Drive

Modified MMC and its capacitor voltage ripple suppression method employed in medium‐voltage wind generator system

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