Results 151 to 160 of about 1,622,335 (215)

A High-Speed Sliding-Mode Observer for the Sensorless Speed Control of a PMSM

IEEE Transactions on Industrial Electronics, 2011
This paper proposes a sensorless speed control strategy for a permanent-magnet synchronous motor (PMSM) based on a new sliding-mode observer (SMO), which substitutes a sigmoid function for the signum function with a variable boundary layer. In order to apply a sensorless PMSM control which is robust against parameter fluctuations and disturbances, a ...
Hongryel Kim, Jubum Son, Jangmyung Lee
openaire   +4 more sources

Sensorless speed control of induction motors

Proceedings of the 2004 American Control Conference, 2004
We consider field-oriented speed control of induction motors without rotor position sensors. We augment the traditional approach with flux and speed observers and derive a sixth-order nonlinear model that describes the motor in field-oriented coordinates. The model takes into consideration the error in flux estimation.
Hassan K. Khalil, Elias G. Strangas
openaire   +2 more sources

Speed-Sensorless Induction Machine Control for Zero Speed and Frequency

IEEE Transactions on Industrial Electronics, 2003
A speed sensorless controller structure for tracking the rotor flux orientation of an induction motor was implemented in a laboratory setup. The controller is based on superimposing a low-frequency AC test signal on the stator current of the motor. The response in the stator voltage to the signal depends on the orientation of the signal relative to ...
Veli-Matti Leppänen, Jorma Luomi
openaire   +2 more sources

Fuzzy PI based speed sensorless speed control of position sensorless BLDC drive

IET Chennai Fourth International Conference on Sustainable Energy and Intelligent Systems (SEISCON 2013), 2013
The Sensorless control of permanent magnet brushless DC motor is presented in this paper. The development of advanced sensorless motor drive has been increases rapidly, because of their higher performance and reliability. The fuzzy PI controller is developed for controlling the speed and position of the PMBLDC motor drive.
R. Manikandan, R. Arulmoziyal, K.R. Priyadharsini   +2 more
openaire   +1 more source

Parameter sensitivity of speed estimation in speed sensorless induction motor drives

Proceedings of 4th IEEE International Workshop on Advanced Motion Control - AMC '96 - MIE, 2002
A method for evaluating the sensitivity of speed estimation to parameter variations in inverter motor drives with microprocessor based control is proposed in the paper. By using a full order flux asymptotic observer, the step by step analytical determination of the stator current error is carried out.
ATTAIANESE, Ciro, FUSCO, Giuseppe, MARONGIU I, PERFETTO A.   +3 more
openaire   +7 more sources

Intrinsic Speed-Sensorless Control of Induction Motor

Proceedings of the 45th IEEE Conference on Decision and Control, 2006
A novel speed sensorless control technique for induction motors is presented. No "simplifying" assumption on the magnetic flux (such as known initial conditions, measurable rotor/stator fluxes) is considered and the load torque is assumed constant, but unknown, according to the usual industrial control problem.
MONTANARI, MARCELLO, S. Peresada, TILLI, ANDREA   +2 more
openaire   +3 more sources

Low-speed sensorless control of induction Machine

IEEE Transactions on Industrial Electronics, 2006
Induction motor (IM) speed sensorless control, allowing operation at low and zero speed, optimizing torque response and efficiency, will be presented in this paper. The magnitude and the orientation angle of the rotor flux of the IM are determined by the output of the closed-loop rotor-flux observer based on the calculation of the extended ...
Gregor Edelbaher, Karel Jezernik, Evgen Urlep   +2 more
openaire   +2 more sources

Sensorless speed control in induction motor drives

Proceedings First IEEE International Workshop on Electronic Design, Test and Applications '2002, 2003
This paper describes a method of sensorless speed estimation that is low cost and easy to implement. It uses two different algorithms, and so compensates for the weaknesses of the individual algorithms producing a robust low cost application. A method is investigated that uses the rotor slot harmonics to estimate the speed of the motor above 300 rpm ...
William Phipps, Ibrahim Al-Bahadly
openaire   +1 more source