Results 171 to 180 of about 29,685 (215)
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Computationally Efficient Model Predictive Direct Torque Control
IEEE Transactions on Power Electronics, 2010For medium-voltage drives, model predictive direct torque control (MPDTC) significantly reduces the switching losses and/or the harmonic distortions of the torque and stator currents, when compared to standard schemes, such as direct torque control or pulse width modulation. Extending the prediction horizon in MPDTC further improves the performance. At
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Microcontroller implementation of direct torque control
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2004AbstractThe switching frequency of a conventional direct torque control (DTC) strategy which is based on hysteresis controllers results in a variable switching frequency which depends on the mechanical speed, stator flux, stator voltage, and the hysteresis band of the comparator.
Mahfouz, Ahmed A. +2 more
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A new torque controller for Direct Torque Controlled Induction Machine drives
2008 12th International Middle-East Power System Conference, 2008Hysteresis band control is one of the simplest and most popular techniques used in direct torque control (DTC) of induction machine drives. However the conventional fixed band hysteresis control has a variable switching frequency which causes serious problems in DTC.
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2018
Abstract The fundamental principles of direct torque control (DTC) of permanent magnet synchronous (PMS) motors are presented in this chapter. The basic DTC system is then described. The operating limits of PMS machines under DTC are presented in terms of current limit, voltage limit, and flux linkage limit.
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Abstract The fundamental principles of direct torque control (DTC) of permanent magnet synchronous (PMS) motors are presented in this chapter. The basic DTC system is then described. The operating limits of PMS machines under DTC are presented in terms of current limit, voltage limit, and flux linkage limit.
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Wide-speed direct torque and flux control of torque-controlled IPMSM drives
2012 IEEE Energy Conversion Congress and Exposition (ECCE), 2012This paper proposes a voltage-limited finite-settling-step direct torque and flux control (FSS-DTFC) method with a constant switching frequency for torque-controlled interior permanent-magnet synchronous motors (IPMSMs). The proposed control law dynamically scales voltage vectors on the hexagonal voltage boundary to ensure maximum torque capabilities ...
Sehwan Kim, Jul-Ki Seok
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Self tuning IPMSM direct torque controller
2008 IEEE International Symposium on Industrial Electronics, 2008An online adaptive routine is presented for optimum direct torque control of Interior permanent magnet synchronous machines (IPMSM). Optimum control is provided by minimizing of a predefined particular cost function which causes proper selecting of the voltage vector to minimize electrical torque variations. In addition, the required parameters of cost
M. Reza Feyzi, M. Sabahi
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Novel direct-torque-constraint-hysteresis controller
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013A novel hysteresis controller with a direct torque constraint hysteresis (DTCH) shape based on the d-q-coordinate System is presented in this paper. This controller supports the inverter of the drive train system with a bit-pattern. The Inverter drives a permanent magnet synchronous motor (PMSM) by connecting a dc-source, e.g.
Philip Dost, Constantinos Sourkounis
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Examination and Linearization of Torque Control System for Direct Torque Controlled IPMSM
2008 IEEE Industry Applications Society Annual Meeting, 2008This paper examines the torque response based on direct torque control (DTC) for an interior permanent magnet synchronous motor (IPMSM). DTC with a PI controller for torque control is used in this study. The relationship between the gains of the PI controller and the torque response is derived based on the transfer function of the torque control loop ...
Y. Inoue, S. Morimoto, M. Sanada
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A Reduced Torque Ripple Controller for Direct Torque Control of Induction Machines
Electric Power Components and Systems, 2002Direct Torque Control (DTC) of induction machines (IM), based on hysteresis comparators and selection table, suffers from variable switching frequency and large torque ripple, especially at low speed. This is because the rate of change of torque and flux and hence the time taken for the torque and flux to reach their upper and lower bands, varies with ...
Nik Idris, Nik Rumzi +1 more
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Torque Ripple Minimization for Induction Motor Drives with Direct Torque Control
Electric Power Components and Systems, 2004Direct torque control (DTC) schemes can produce quick and robust responses, but they usually behave like hysteresis controllers. Consequently there are similar problems like non constant switching frequencies and high torque ripple especially when operation conditions result in low switching frequencies.
R. Kennel +4 more
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