Showing 1-25 of 3,553 resultsfor "Index Terms":Actual Torque
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Maximum Torque Control Reference Frame Based on a Torque Map for IPMSMs with Large Inductance Variation
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
In this paper, we summarize a method of applying a maximum torque control reference frame to IPMSMs with large influence of magnetic saturation. Conventionally, a formula based on the torque equation with motor parameters of IPMSMs has been used to calculate the phase angle of the maximum torque control reference frame. However, the equation is greatly affected by inductance variation due to magne...Show More
Instantaneous Torque Control of SRM with a Logical Torque Sharing Method
2007 IEEE Power Electronics Specialists Conference
Year: 2007 | Conference Paper |
Cited by: Papers (7)
A novel non-linear logical torque sharing function (TSF) is presented. To improve efficiency and to reduce torque ripple in commutation region, only a phase torque under commutation is regulated to produce a uniform torque. And the torque developed by the other phase remains with the previous state under a current limit of the motor and drive. If the minimum change of a phase torque reference can ...Show More
Minimizing the Influence of Cogging Torque on Vibration of PM Brushless Machines by Direct Torque Control
IEEE Transactions on Magnetics
Cited by: Papers (51)
Direct torque control (DTC) is employed to minimize the influence of the cogging torque on the vibrational behavior of a PM brushless machine. Simulated and measured results, both with and without cogging torque compensation, show that DTC is effective in compensating for the influence of cogging torque provided it is taken into account in the torque estimation. The method results in a simple and ...Show More
Electromotive force compensation in direct torque control with discretized voltage intensities
2016 4th International Symposium on Environmental Friendly Energies and Applications (EFEA)
Year: 2016 | Conference Paper |
Cited by: Papers (1)
This paper describes a way of electromotive force compensation in direct torque control algorithm with discretized voltage intensities. Theoretical background of DVI-DTC algorithm with discretized voltage intensities is presented. The main advantage of this algorithm is the change in number of available voltage intensities in order to reduce the torque ripple as required. The effect of induced EMF...Show More
A Novel Direct Control of Torque and Levitation Force Ripple for Bearingless Switched Reluctance Motor
2023 IEEE 6th International Electrical and Energy Conference (CIEEC)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
An improved direct instantaneous torque control (DITC) strategy is proposed in this study for the 12/4 bearingless switched reluctance motor (BSRM), which employs a new commutation method to address the torque ripple issue caused by the switching of phases. The proposed strategy can effectively reduce torque ripple. In addition, two control modes are used to decrease torque ripple, which are based...Show More
A High-accuracy Torque Control Strategy of PMSM for Electric Vehicles
2021 IEEE 1st International Power Electronics and Application Symposium (PEAS)
Year: 2021 | Conference Paper |
Cited by: Papers (2)
The actual torque of PMSM may discrepant from the expected torque due to the non-linear characteristics and inconsistency during mass production of PMSM. Meanwhile, achieving high-precision torque control is vital to the safety performance of electric vehicles. A proposed multi-closed-loop algorithm is introduced in this paper. In order to reduce cost and save space, no torque sensors are used. A ...Show More
Predictive torque control strategy of an Open-End Winding Induction Motor Drive with less common-mode voltage
2018 IEEE International Conference on Industrial Technology (ICIT)
Year: 2018 | Conference Paper |
Cited by: Papers (4)
Direct Torque Control (DTC) and Predictive Torque Control (PTC) Strategies emerged as popular techniques for speed control of Induction Motor Drives. In this article, an effective PTC strategy is introduced to an Open-End Winding Induction Motor Drive (OEWIMD) to control torque and flux directly. PTC offers all the features of classical DTC and it provides lesser ripple in torque and flux. The lim...Show More
Research on Torque Distribution Function Method for DSEM Based on H-Bridge Converter
IECON 2023- 49th Annual Conference of the IEEE Industrial Electronics Society
Year: 2023 | Conference Paper |
The traditional control strategies for doubly salient electro-magnetic motor (DSEM) have problems such as large torque ripple, low current utilization, and difficulty in commutation during operation. To address these problems, a torque distribution function (TDF) control method based on H-bridge converter is proposed by this paper, which reduces the commutation area by three-phase independent chop...Show More
Control of SR motor EV by instantaneous torque control using flux based commutation and phase torque distribution technique
2008 13th International Power Electronics and Motion Control Conference
Year: 2008 | Conference Paper |
Cited by: Papers (3)
Switched reluctance motors (SR motors) have many advantages such as simple and solid construction, low-cost manufacturing, excellent reliability at high temperatures, and large torque density. However, the higher torque ripple from magnetic saliency is a serious problem preventing its applications from being expanded. To reduce torque ripple, we propose an instantaneous torque control method using...Show More
A Kind of Simplified Structure Direct Torque Control Method for Brushless DC Motor
2013 Third International Conference on Instrumentation, Measurement, Computer, Communication and Control
Year: 2013 | Conference Paper |
Cited by: Papers (1)
A simplified direct torque control method is introduced in order to solve difficult situations in flux linkage observation and control of the direct torque control of brush less DC motor. This simplified direct torque control adopts a simplified structure without flux linkage observation and control. To calculate torque of motor in back electromotive force shape function method is simple and effec...Show More
Transformer Oil Valve Torque Measurement and Model Construction
2024 5th International Conference on Clean Energy and Electric Power Engineering (ICCEPE)
Year: 2024 | Conference Paper |
Currently, regular oil sampling and testing for oil-immersed transformers face several challenges, where manual operation not only risks misjudging the transformer's operating state but also poses a threat to personnel safety. To address the torque control issues during the robot's oil extraction process, this study designed and constructed a torque measurement test platform. Experiments were cond...Show More
A Novel Five-Level Power Converter Structure with Reduced Device Utilization for SRM
2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia)
Year: 2024 | Conference Paper |
This paper proposes a five-level power converter structure suitable for three-phase switched reluctance motors (SRMs) and elaborates on its operation modes, including singlephase and two-phase operation modes. The proposed structure effectively reduces the number of switching tubes and achieves the simultaneous conduction of two-phase. Through simulation and experimental verification, the proposed...Show More
Torque Ripple Suppression and Efficiency Optimization Methods for Switched Reluctance Motors
2024 IEEE International Conference on Energy Internet (ICEI)
Year: 2024 | Conference Paper |
Switched reluctance motors (SRM) experience significant torque ripple during commutation, usually mitigated by using torque sharing functions (TSF). However, traditional TSF control methods often lead to high peak currents and poor torque tracking during commutation, resulting in large torque ripple and low efficiency. Choosing the right turn-on angle can reduce torque ripple and improve efficienc...Show More
An Online Torque Sharing Function with Torque Reference Self-Adjusting Method for Switched Reluctance Machines
2024 27th International Conference on Electrical Machines and Systems (ICEMS)
Year: 2024 | Conference Paper |
This paper proposes a torque sharing function (TSF) for Switched reluctance motor (SRM) based on the torque closed-loop compensation. Firstly, the online TSF method proposed in this paper takes the negative torque caused by current tailing into account and compensate it in the incoming phase. Secondly, the reference torque of incoming phase and outgoing phase are compensated through torque closed-...Show More
Research on the Calculation Method of Torque Fluctuation Coefficient for Industrial Robot Servo Motors Based on Stator Current
2024 2nd International Conference on Artificial Intelligence and Automation Control (AIAC)
Year: 2024 | Conference Paper |
As one of the core components of industrial robots, the output of servo motors directly affects the overall accuracy of industrial robots. This paper selects the torque fluctuation coefficient of the servo motor as the main parameter to evaluate the health condition of the motor. By analyzing the impact of the fundamental wave current and harmonic currents on torque, a model linking the stator cur...Show More
A New Predictive Torque Control Based Torque Sharing Function for Switched Reluctance Motors
2019 22nd International Conference on Electrical Machines and Systems (ICEMS)
Year: 2019 | Conference Paper |
Cited by: Papers (14)
The torque ripple of switched reluctance motors(SRMs) is large due to its doubly salient structure, which has to be suppressed to extend its application. Torque Sharing Function (TSF) is introduced to reduce torque ripple in SRMs. In torque hysteresis loop controller, there are errors in torque observation as the actual torque hysteresis band is larger than simulation, which leads to significant t...Show More
Load Torque Observer for Cutting Motor of Roadheader Based on PLL
2011 Third International Conference on Measuring Technology and Mechatronics Automation
Year: 2011 | Conference Paper |
When the road header is working, because of different characteristics of coal and rock, in order to protect the cutting head, the speed of cutting head should be adjusted according to the load torque. In this paper, a method based on PLL for observing the load torque of cutting motor was proposed, and its simulation and experimental were studied. The method is simpler and more accurate compared to...Show More
Implementation of Two-Wheel Independence Drive System Based on Indirect Field-Oriented and Direct Torque Control Strategies
2024 27th International Conference on Electrical Machines and Systems (ICEMS)
Year: 2024 | Conference Paper |
Proposed wheel independence drive structures presented improvement of maneuverability and stability of vehicles. In this paper, torque of two brushless direct current motors were regulated in cases that a vehicle is moving in straight lines and during curves based on indirect field-oriented control and direct torque control. Simulation results presented different torque and power requirements of t...Show More
Influence of Torque Sharing Function Parameters on Torque Ripple and Online Torque Error Compensation in Switched Reluctance Machines
2022 25th International Conference on Electrical Machines and Systems (ICEMS)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Large torque ripple is a significant disadvantage of Switched Reluctance Machines (SRMs) which has limited its application in high precision occasions. This paper will firstly analyze the influence of torque sharing function (TSF) parameters on the control performance. Then, an improved torque ripple reduction method with online torque error compensation based on the TSF is proposed. According to ...Show More
Torque Online Correction Control of Switched Reluctance Motor Based on Optimized Torque Sharing Function
To suppress the torque ripple of switched reluctance motors (SRMs) and further enhance the efficiency of the motor, a torque sharing function (TSF) control strategy based on the ratio of torque per square ampere is proposed in this article. The control strategy takes into account the torque generation capacity of the motor, and a value function is proposed to optimize the TSF waveform to minimize ...Show More
Fuzzy DTC for induction motor with optimized command stator flux
2010 8th World Congress on Intelligent Control and Automation
Year: 2010 | Conference Paper |
Cited by: Papers (3)
In order to reduce torque ripple of direct torque control (DTC) scheme, a novel stator flux reference optimize strategy is introduced first in this paper. Then, a fuzzy logic controller is designed to select synthesized voltage vectors. Three inputs of the fuzzy controller are the error of electromagnetic torque and the error of square stator flux linkage between the reference value and actual val...Show More
Real Time Realization of Torque Control by an EV Controller Using Model Based Design Approach
2021 IEEE Transportation Electrification Conference (ITEC-India)
Year: 2021 | Conference Paper |
In order to realize the torque control mechanism of an electric vehicle the powertrain of an IC-engine powered vehicle has been electrified. A Permanent Magnet Synchronous Motor (PMSM) is chosen as prime mover which is coupled with a single speed gear box. The challenge was to achieve quick road worthiness of the vehicle. The objective of this research is to realize a robust higher level torque co...Show More
Switched reluctance motor speed performance simulation study based on torque ripple suppression
Proceedings of the 2013 International Conference on Advanced Mechatronic Systems
Year: 2013 | Conference Paper |
Cited by: Papers (1)
This paper presents a novel speed control system with the torque ripple suppression based on torque observer. The switched reluctance motor drive system is hard to obtain good speed performance especially at low speed due to its critical nonlinearity. Relatively accurate mathematical model of the motor is difficult to establish. In the paper, a torque observer is designed to get the actual torque ...Show More
Predictive Direct Torque Control ASIC of Three-Phase Induction Motor Using Speed-Sensorless Control and Neural Network Proportional-Integral-Derivative Controller
Guo-Ming Sung;Chao-Rong Chen;Mao-Hsun Tien;Chwan-Lu Tseng;Ching-Yin Lee;Chih-Ping Yu
2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC)
Year: 2022 | Conference Paper |
In this study, we propose a modified predictive direct torque control (PDTC) application-specific integrated circuit (ASIC), comprising a neural network (NN) proportional integral derivative (PID) controller, speed-sensorless control, fuzzy error controller, and seven-stage hysteresis controller, to alleviate the ripple problem induced by limited vector voltages and slow speed response in conventi...Show More
Torque ripple minimization in five-phase three-level inverter fed direct torque control induction motor drive
2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe)
Year: 2015 | Conference Paper |
Cited by: Papers (12)
This paper presents the torque ripple minimization in direct torque control (DTC) five-phase induction motor drive fed with three-level five-phase inverter. Selective space vector utilization in three-level five-phase inverter is investigated and compared with its two-level counterparts. In order to minimize the torque ripple, five-level torque comparator is presented which allows the utilization ...Show More
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