Results 141 to 150 of about 1,816 (187)
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IFAC Proceedings Volumes, 1989
Abstract The digital control of electrical drives by microprocessors requires special control concepts which are formed for digital signal processing. By implementing the well-known control strategies in the frequency domain and in the state space there are always two fundamental disadvantages; first the nonlinearities of a drive system cannot be ...
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Abstract The digital control of electrical drives by microprocessors requires special control concepts which are formed for digital signal processing. By implementing the well-known control strategies in the frequency domain and in the state space there are always two fundamental disadvantages; first the nonlinearities of a drive system cannot be ...
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Speed control and sensorless force control with magnetic gear
2010 11th IEEE International Workshop on Advanced Motion Control (AMC), 2010This paper describes a study of the speed control and sensorless force control with non-contact magnetic transmission system (the magnetic gear). The magnetic gear has various features. For example, this device is characterized by negligibly small friction because of transmitting torque without contact.
Hiroki Komiyama, Yutaka Uchimura
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VHFIM sensorless control of PMSM
2010 IEEE International Symposium on Industrial Electronics, 2010The paper deals with combined real-time model of PM synchronous motor for sensorless position control. Real-parametric-and real-time model could be ideal tools for both control and simulation of the PMSM position drive. Unfortunately that idealized model doesn't exist so far.
Viktor Bobek +3 more
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Sensorless control of SRM at standstill
APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181), 2002A method for the sensorless control of a switched reluctance motor (SRM) at standstill is presented in this paper. At standstill, each SRM phase is excited in sequence with a narrow voltage pulse. The most suitable phase to be excited first for starting the SRM can be detected by comparing the amplitudes of the resultant phase currents.
H. Gao, F.R. Salmasi, M. Ehsani
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Sensorless control of a thermoacoustic refrigerator
The Journal of the Acoustical Society of America, 2004A method for commanding the frequency of the signal that drives an electrodynamic sound source to maintain the coupled thermoacoustic resonator at its resonance frequency is described. The method uses only the current and voltage applied to the source terminals to select the operating frequency, thereby eliminating the need for pressure and ...
Tony L. Shearer +3 more
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Sensorless control of electrical drives
SPIE Proceedings, 2006ABSTRACT This paper provides an overview of advanced methods to perform sensorless control for D.C. and A.C. motors in detail. The features of the methods are presented, analyzed and evaluated. The conclusion can be used as a guideline for the persons interested in sensorless control.
Junkui Wang, Bo Yang
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Pseudo Sensorless Control of PMSM
2006 12th International Power Electronics and Motion Control Conference, 2006Pseudo sensorless permanent magnet synchronous motor torque and flux tracking control algorithm is presented. Proposed approach addresses the problem of operation at zero, low and up to nominal speed. The information of flux is extracted using a nonlinear closed loop rotor flux observer combined with the information obtained from hall sensors, which ...
Evgen Urlep +2 more
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Sensorless control of PMSM drives
2019When compared to induction motors, permanent magnet synchronous motors (PMSMs) feature higher torque density, improved efficiency and increased constant power speed range. These distinct advantages have resulted in PMSMs being employed in a myriad of industrial applications. Traditionally, the open -loop V/f control scheme has been the preferred method
Gilbert Foo +2 more
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A sensorless control for wind turbine
2009 17th Mediterranean Conference on Control and Automation, 2009This paper presents a sensorless control for a stall regulated variable speed wind turbine, where the speed reference is obtained from the estimated aerodynamic torque. The LQG/LTR methodology is applied to the design of an optimal discrete-time feedback controller for a Wind Energy Conversion System, aiming to maximize the efficiency on energy ...
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Sensorless Heating Control of SMA
2021 Fourth International Conference on Microelectronics, Signals & Systems (ICMSS), 2021Renesha Ram, Shyma Muhammed, Sreekanth M
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