An Improved Direct Instantaneous Torque Control of Doubly Salient Electromagnetic Machine for Torque Ripple Reduction

Cheng, Xu; Zhang, Zhuoran; Yu, Liangyao; Bian, Zhangming

doi:10.1109/tie.2020.3003596

Cited by 37 publications

(9 citation statements)

References 18 publications

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“…DTC may be performed by computing an electric motor's flux and torque using just quantifiable stator parameters such as the current and voltage of the stator of the motor drive [9]- [11]. Classic DTC involves two hysteresis comparators, one for calculating the error of stator flux coupled with another one for estimating torque error [12]- [14]. In comparison with field-oriented control of vector control [15], DTC is easier to apply since it does not need a complex block of parameters.…”

Section: Introductionmentioning

confidence: 99%

Reducing torque ripple of induction motor control via direct torque control

Azze

Hameed

2023

IJECE

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<span lang="EN-US">The induction motor is extremely well known and used as an alternating current (AC) machine. Therefore, torque and speed regulations are very essential for this type of machine. This paper presents direct torque control (DTC) based on induction motors (IM). The mathematical model of IM is reported, and the machine is modeled in a synchronous coordinate farm. Classic DTC is applied to IM with two bandwidths of hysteresis controller for electromagnetic torque and stator flux. The system is simulated and investigated via MATLAB/Simulink and the results carry out a high ripple on the torque. There are numerous of improving torque response, one of them is adding a new loop for speed with proportional, integral, and derivative (PID) controllers. IM model with PID based on DTC is simulated through MATLAB. A contrast performance of IM is presented between traditional DTC and DTC with PID. As result, the new DTC with PID carries out improvement in the speed response as well reduces the ripples of torque.</span>

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Section: Introductionmentioning

confidence: 99%

Reducing torque ripple of induction motor control via direct torque control

Azze

Hameed

2023

IJECE

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“…At the same time, a drive scheme with high torque current ratio is proposed, which adopts adaptive phase delay compensation to adjust the current in the reversing process [23]. In addition, direct instantaneous torque control was improved to suppress torque ripple [24]. All the above methods can improve the reversing torque ripple to some extent, but it is difficult to be applied because of the complexity of the calculation process caused by the introduction of adaptive controller.…”

Section: Introductionmentioning

confidence: 99%

Improved startup control of aero doubly salient electromagnetic starter generator based on optimised currents distribution with advanced angle commutation

Zhou

Liu

Lin

et al. 2023

IET Electric Power Appl

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Doubly salient electromagnetic machine (DSEM) can constitute a competitive rugged starter generator (SG) system. But under the traditional startup control method, the field current is set to the rated value regardless of speed or load torque conditions, and the phase currents are controlled with standard angle commutation, bringing in large power loss as well as non‐negligible torque ripple. To overcome these shortcomings, based on the established DSEM power loss calculation model, a currents distribution strategy is proposed according to the obtained quantitative relationship between DSEM power loss and field current under multiple speed and load torque conditions. Then, to identify the load torque for practical implementation, a novel torque observer is designed based on back propagation (BP) neural network algorithm. Afterwards, to further improve the startup torque performance, currents distribution with advanced angle commutation (AAC) strategy is put forward, where the optimal advanced angle is selected from a 3‐D lookup table to achieve the minimal commutation torque ripple. Under the proposed control strategies, DSEM power loss as well as the output torque ripple are desired to be decreased, the simulation and experimental results on a 12/8‐pole DSEM prototype verify the correctness and feasibility of the proposed strategies under multiple operating conditions.

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“…The DTC technique is characterized by durability and simplicity compared to the FOC strategy, where a switching table is used to control the generator inverter and two hysteresis controllers are used to control the reactive and active power (Qs and Ps) [21]. This techinque was used to command several electrical machines [22][23][24][25]. In addition, the DPC method is very similar to the DTC method in its working principle, and the difference between them lies in the references used [26].…”

Section: Introductionmentioning

confidence: 99%

Synergetic-PI controller based on genetic algorithm for DPC-PWM strategy of a multi-rotor wind power system

Benbouhenni

Gasmi

Çolak

et al. 2022

Preprint

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This work designs a powerful new nonlinear method using synergetic control (SC), proportional-integral (PI) controller, and genetic algorithm (GA) for multi-rotor wind energy (MRWE) conversion systems, whereby an asynchronous generator is used to achieve optimal energy extraction. The direct power control (DPC) is used based on the proposed synergetic-PI-GA (SPI-GA) method to control the generator in a MRWE system, where this new nonlinear technique is used to achieve stable control characteristic under random changes in wind speed and to provide great robustness against modeling uncertainties. Moreover, the pulse width modulation (PWM) technique is used to control the generator inverter due to its simplicity and ease of implementation. In this proposed DPC-SPI-GA method, we need to measure current and voltage to estimate the active power and the reactive power. Also, inner loops are not used in this proposed DPC-SPI-GA method as is the case in the field-oriented control (FOC) method, where the proposed system in this work is characterized by an integrated structure. Three different tests are proposed to study and verify the behavior of the designed DPC-SPI-GA strategy compared to the DPC technique.

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An Improved Direct Instantaneous Torque Control of Doubly Salient Electromagnetic Machine for Torque Ripple Reduction

Cited by 37 publications

References 18 publications

Reducing torque ripple of induction motor control via direct torque control

Reducing torque ripple of induction motor control via direct torque control

Improved startup control of aero doubly salient electromagnetic starter generator based on optimised currents distribution with advanced angle commutation

Synergetic-PI controller based on genetic algorithm for DPC-PWM strategy of a multi-rotor wind power system

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