Download or read book Deadbeat Direct Torque and Flux Control Motor Drive Over a Wide Speed Torque and Flux Operating Space Using a Single Control Law written by Timothy R. Obermann and published by . This book was released on 2010 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Permanent Magnet Synchronous Motors written by Sadegh Vaez-Zadeh and published by Oxford University Press. This book was released on 2018-02-23 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Permanent magnet synchronous (PMS) motors stand at the forefront of electric motor development due to their energy saving capabilities and performance potential. The motors have been developed in response to mounting environmental crises and growing electricity prices, and they have enabled the emergence of motor drive applications like those found in electric and hybrid vehicles, fly by wire, and drones. Control of Permanent Magnet Synchronous Motors is a timely advancement along that path as the first comprehensive, self-contained, and thoroughly up-to-date book devoted solely to the control of PMS motors. It offers a deep and extended analysis, design, implementation, and performance evaluation of major motor control methods, including Vector, Direct Torque, Predictive, Deadbeat, and Combined Control, in a systematic and coherent manner. All major Sensorless Control and Parameter Estimation methods are also studied. The book places great emphasis on energy saving control schemes.

Download or read book Deadbeat direct Torque and Flux Control Drives for High Power Applications Using Low Switching Frequency Multi level Inverters written by Yukai Wang and published by . This book was released on 2016 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: A deadbeat-direct torque and flux control (DB-DTFC) drive has been a promising alternative to a field oriented control (FOC) drive for general applications. This research investigates DB-DTFC drives on low switching frequency, multi-level inverter fed, high power induction machines. The investigation explores the opportunity to integrate DB-DTFC in high power applications via the following four aspects: proper modeling of cross-coupling effect at low switching and/or high fundamental frequency, torque/flux dynamics and estimation accuracy regarding Volt-sec. error and parameter mismatch, position/speed self-sensing and flux linkage-based loss manipulation. A standard indirect FOC drive is used as the benchmark to evaluate DB-DTFC performance at very low switching frequencies. This research further investigates scaling properties to apply DB-DTFC from kilowatt to several megawatt power level applications. This dissertation lays a foundation of integrating DB-DTFC into medium voltage high power drives. A methodology is contributed that maximizes the synergies of motor terminal Volt-sec. sensing, real-time parameter identification, back-EMF-based self-sensing and flux-based loss manipulation in the low switching frequency, multi-level inverter fed, DB-DTFC drives.

Download or read book Deadbeat direct Torque and Flux Control Drives for High Power Applications Using Low Switching Frequency Multi level Inverters written by Yukai Wang and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A deadbeat-direct torque and flux control (DB-DTFC) drive has been a promising alternative to a field oriented control (FOC) drive for general applications. This research investigates DB-DTFC drives on low switching frequency, multi-level inverter fed, high power induction machines. The investigation explores the opportunity to integrate DB-DTFC in high power applications via the following four aspects: proper modeling of cross-coupling effect at low switching and/or high fundamental frequency, torque/flux dynamics and estimation accuracy regarding Volt-sec. error and parameter mismatch, position/speed self-sensing and flux linkage-based loss manipulation. A standard indirect FOC drive is used as the benchmark to evaluate DB-DTFC performance at very low switching frequencies. This research further investigates scaling properties to apply DB-DTFC from kilowatt to several megawatt power level applications. This dissertation lays a foundation of integrating DB-DTFC into medium voltage high power drives. A methodology is contributed that maximizes the synergies of motor terminal Volt-sec. sensing, real-time parameter identification, back-EMF-based self-sensing and flux-based loss manipulation in the low switching frequency, multi-level inverter fed, DB-DTFC drives.

Download or read book Improving Deadbeat direct Torque and Flux Control and Self sensing in Induction Machines Over a Wide Range of Operating Conditions written by Yang Xu and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to develop methodologies for systematic improvements of deadbeat-direct torque and flux control (DB-DTFC) and self-sensing for induction machines (IM) over a wide operating range, including very low speeds and very high speeds. The investigation includes the implementation method for DB-DTFC with reduced computational time, extended low-speed self-sensing with volt-second sensing, extended high-speed operation of DB-DTFC in the flux weakening region with encoder feedback and self-sensing, more accurate torque estimation and torque control with DB-DTFC at low sampling-to-fundamental (S2F) frequency ratios, loss minimization with DB-DTFC over a wide operating range, and loss maximization with DB-DTFC for faster braking. This dissertation focuses on the practical issues of DB-DTFC and lays a foundation for integrating DB-DTFC into a commercial IM drive. Analytical studies and experimental investigations show significant improvements at both low speeds and high speeds of the developed methods compared with the existing control methods.

Download or read book Voltage and Current Limited Operation of Deadbeat direct Torque and Flux Control for Interior Permanent Magnet Synchronous Machines written by and published by . This book was released on 2013 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document presents implementation of deadbeat-direct torque and flux control (DB-DTFC) for an interior permanent magnet synchronous machine (IPMSM) at voltage- and current- limited condition and robustness evaluation of a DB-DTFC IPMSM drive with respect to parameter variations. When a motor is operated at voltage- and current- limits, a transient torque response becomes slow due to lack of voltage to develop torque changes. Many solutions have been presented and focused on a full utilization of inverter voltage instead of improving transient torque responses. A few methods have addressed optimal solutions to achieve fast torque responses but algorithms are complicated to implement in real time. This research presents development of time optimal and real time suboptimal control algorithms to improve transient torque dynamics of an IPMSM drive at voltage and current limits. Also, loss minimizing stator flux linkage is used during steady state operation to reduce computational complexity of optimization and to operate IPMSM drives at the loss minimizing condition. The voltage- and current- limited operation of IPMSM drives is implemented and evaluated in simulation and in experiment. This research also presents robustness evaluation of DB-DTFC of IPMSM drives with respect to machine parameter variations. For performance comparison, current vector control (CVC), one of the most widely used control methods, is also implemented under identical operating conditions as DB-DTFC. As the metrics to evaluate dynamic performance of DB-DTFC and CVC IPMSM drives, command tracking is used to investigate torque command tracking performance and dynamics stiffness is used to evaluate disturbance rejection performance. In addition, the torque estimation accuracy of DB-DTFC and CVC is investigated with respect to parameter variation. Simulation and experimental results of robustness evaluation of DB-DTFC and CVC are presented.

Download or read book Deadbeat Direct Torque Flux Control for Interior Permanent Magnet Synchronous Machines written by Jae Suk Lee and published by . This book was released on 2009 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stator and Rotor Flux Based Deadbeat Direct Torque Control of Induction Machines written by and published by . This book was released on 2001 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stator and Rotor Flux Based Deadbeat Direct Torque Control of Induction Machines Revision 1 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new, deadbeat type of direct torque control is proposed, analyzed, and experimentally verified in this paper. The control is based on stator and rotor flux as state variables. This choice of state variables allows a graphical representation which is transparent and insightful. The graphical solution shows the effects of realistic considerations such as voltage and current limits. A position and speed sensorless implementation of the control, based on the self-sensing signal injection technique, is also demonstrated experimentally for low speed operation. The paper first develops the new, deadbeat DTC methodology and graphical representation of the new algorithm. It then evaluates feasibility via simulation and experimentally demonstrates performance of the new method with a laboratory prototype including the sensorless methods. Kenny, Barbara H. and Lorenz, Robert D. Glenn Research Center NASA/TM-2001-211100/REV1, NAS 1.15:211100/REV1, E-12945-1/REV1

Download or read book Bandwidth Selection of Deadbeat direct Torque and Flux Control with Back EMF Self sensing and Loss Minimization Control for Industrial Drives Applications written by Shang-Chuan Lee and published by . This book was released on 2019 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research develops the guidelines of bandwidth selection in the observers for DB-DTFC using back-EMF self-sensing at various operating conditions and loss minimization control for industrial drives applications. This research begins with investigation of model-based design implementation issues of deadbeat-direct torque and flux control (DB-DTFC) with back-EMF self-sensing for a PMSM using rapid control prototyping (RCP) in a real-time control environment. A methodology to correctly implement DB-DTFC with back-EMF self-sensing using auto-code generation is presented. To further achieve the industrial specific speed control performance using DB-DTFC with back-EMF self-sensing at various operating point conditions, guidelines for the selection on the combination of bandwidth (BW) selection in the observers of DB-DTFC using back-EMF self-sensing for PMSMs are developed. Current and flux observers are key technologies for DB-DTFC, while back-EMF state filter and position tracking observers are critical algorithms for back-EMF self-sensing. By following the guidelines of bandwidth selection in the observers for DB-DTFC with back-EMF self-sensing, quantitative performance investigation of DB-DTFC using self-sensing can be achieved from both simulation and experimental results. A Current Vector Control (CVC) drive is used as the benchmark to evaluate DB-DTFC performance at various operating point conditions, including the impact of sampling frequency and a step torque disturbances from the load machine. One of advantages of DB-DTFC control is loss manipulation control to achieve energy savings. The loss manipulation methods including offline and online model-based loss manipulation method are experimentally investigated with the energy saving using industrial drives. This dissertation develops the guidelines of bandwidth selection in the observers for DB-DTFC using back-EMF self-sensing at various operating conditions for PMSMs and demonstrates a methodology to correctly implement DB-DTFC with back-EMF self-sensing for industrial drives applications.

Download or read book Loss Manipulation Using Deadbeat Direct Torque Flux Control for Induction Machines written by James M. Burton and published by . This book was released on 2009 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science Abstracts written by and published by . This book was released on 1995 with total page 1990 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Deadbeat direct Torque and Flux Control and Fully Decoupled Current Regulators for Wound Field Synchronous Machines written by Yue Nie and published by . This book was released on 2018 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effective Real Time Implementation of Deadbeat Direct Torque Control for AC Induction Machines written by Nathan T. West and published by . This book was released on 2006 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Deadbeat direct Torque and Flux Control on an Asymmetric Induction Machine written by Yang Xu and published by . This book was released on 2016 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Dynamic Trajectories for Deadbeat direct Torque and Flux Control DB DTFC During Voltage Limited Operation written by Zachary D. Hurst and published by . This book was released on 2011 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Deadbeat Direct Torque and Flux Control DB DTFC of Induction Machines Using Back EMF Tracking for Motion Self sensing written by Kang Wang and published by . This book was released on 2015 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: