@article{Iamsamang2018,

title = {Design of a globally stable position estimator for surface permanent-magnet synchronous motors},

author = {P Iamsamang and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85042617226&doi=10.1002%2ftee.22644&partnerID=40&md5=b8e4f2d4eaab95d8513065c47a4cde8a},

doi = {10.1002/tee.22644},

issn = {19314973},

year  = {2018},

date = {2018-01-01},

journal = {IEEJ Transactions on Electrical and Electronic Engineering},

volume = {13},

number = {6},

pages = {901-910},

publisher = {John Wiley and Sons Inc.},

abstract = {Position estimators of surface permanent-magnet synchronous motors are often designed with local stability and thus may be unstable under a large estimation error. To overcome the risk of instability, a globally stable position estimator is proposed in this paper. The proposed estimator is derived from an alternative expression of the stator model, which has the rotor position as the only parameter inside. Stability analysis of the estimator and conditions for global stability are obtained without any approximation. Design rules for global stability, dynamic, and tracking performances are clearly given. All theoretical results are finally verified by experiment. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.},

note = {cited By 0},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{PoNgam2012,

title = {Stability and dynamic performance improvement of adaptive full-order observers for sensorless PMSM drive},

author = {S Po-Ngam and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84855690157&doi=10.1109%2fTPEL.2011.2153212&partnerID=40&md5=8336085ec0acf258e1b1db0d70b5991d},

doi = {10.1109/TPEL.2011.2153212},

issn = {08858993},

year  = {2012},

date = {2012-01-01},

journal = {IEEE Transactions on Power Electronics},

volume = {27},

number = {2},

pages = {588-600},

abstract = {Stability and good dynamic performances of adaptive full-order observers are of utmost importance for the sensorless PMSM drive. In this paper, to accomplish both requirements, the analytical stability conditions are firstly derived to provide a general framework for the feedback gain design. Closed-form solutions of the stabilizing feedback gains are consequently given, and are used in the zero and pole placement design to obtain an adequate and constant damping factor along with the stability at all operating frequencies. New design rules for the adaptation of PI gains to satisfy the required performances are also proposed. The robustness of the adaptive full-order observer against stator resistance and inductance variations is also investigated. Validity of the designed sensorless control is confirmed by simulation and experiment. © 2011 IEEE.},

note = {cited By 104},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kiatsookkanatorn2012,

title = {A unified PWM method for matrix converters and its carrier-based realization using dipolar modulation technique},

author = {P Kiatsookkanatorn and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-80053627616&doi=10.1109%2fTIE.2011.2151823&partnerID=40&md5=0ef4f56c4cd5e4655c461ae0f40d7ace},

doi = {10.1109/TIE.2011.2151823},

issn = {02780046},

year  = {2012},

date = {2012-01-01},

journal = {IEEE Transactions on Industrial Electronics},

volume = {59},

number = {1},

pages = {80-92},

abstract = {This paper proposes a unified PWM method for matrix converters so as to establish a common platform which can generate various types of PWM methods in real time by adjusting the free parameters in the modulation algorithm. As a foundation for unification, the general form of the modulation functions for matrix converters is derived using geometric transformation approach. All eligible direct modulation matrices are shown to be of indirect form and are expressed in terms of instantaneous phase quantities. This paper also presents a new viewpoint to consider a matrix converter as a generalized three-level inverter and to apply the double-carrier-based dipolar modulation technique of the three-level inverter to the matrix converter. Several concepts of the two-level PWM inverters are then generalized to the matrix converters for better visualization and understanding of the modulation process. © 2011 IEEE.},

note = {cited By 34},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Pairodamonchai2009,

title = {Design and implementation of a hybrid output EMI filter for high-frequency common-mode voltage compensation in PWM inverters},

author = {P Pairodamonchai and S Suwankawin and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349969849&doi=10.1109%2fTIA.2009.2027352&partnerID=40&md5=fa0ef78aa980a6adff01cb57ae792173},

doi = {10.1109/TIA.2009.2027352},

issn = {00939994},

year  = {2009},

date = {2009-01-01},

journal = {IEEE Transactions on Industry Applications},

volume = {45},

number = {5},

pages = {1647-1659},

abstract = {This paper presents a hybrid output electromagnetic interference (EMI) filter for common-mode voltage compensation in pulsewidth-modulation (PWM) inverters. Its structure is composed of a single-leg four-level active filter connected in series with a low-frequency blocking capacitor and a small passive LC filter that which enhances the suppression of the common-mode voltage in the high-frequency range. The series capacitor helps in avoiding the core saturation of the common-mode coupling transformer caused by the low-frequency components of the common-mode voltage. Detection of PWM voltages by high-speed optoisolators is done at the inverter's output to achieve better common-mode voltage detection and compensation characteristics. Analysis and design guidelines for the hybrid filter are also given to facilitate systematic design in the real implementation of the filter. Experimental results with a real drive system clearly illustrate a significant reduction of the common-mode voltage, the leakage current, the shaft voltage, and the bearing current. © 2009 IEEE.},

note = {cited By 80},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Suwankawin2006,

title = {Design strategy of an adaptive full-order observer for speed-sensorless induction-motor drives - Tracking performance and stabilization},

author = {S Suwankawin and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-32644447363&doi=10.1109%2fTIE.2005.862308&partnerID=40&md5=312f6937f85eb4b4130fe62ce0b8f34d},

doi = {10.1109/TIE.2005.862308},

issn = {02780046},

year  = {2006},

date = {2006-01-01},

journal = {IEEE Transactions on Industrial Electronics},

volume = {53},

number = {1},

pages = {96-119},

abstract = {Design strategy of both feedback gains and adaptation gains for an adaptive full-order observer is a necessary issue to assure the stability and the tracking performance of the speed estimation in the sensorless drives. In this paper, novel design of feedback gains of the observer is proposed to achieve the stability over the whole operation especially in the low-speed region, including the regenerating mode. Stability improvement using the proposed feedback gains is rigorously proven by the method of Lyapunov. For the adaptation proportional - integral (PI) gains, the ramp response characteristic of the speed estimator is proposed as design guidelines. It is revealed that the integral adaptation gain determines the tracking error of the speed estimator during acceleration/deceleration while the sensitivity to current measurement noises depends on the proportional adaptation gain. It is also pointed out that a suitable corner frequency of the adaptation PI gains is required as a design tradeoff to avoid an oscillation. The validity of all theoretical results is verified by simulation and experiment. © 2006 IEEE.},

note = {cited By 162},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Saejia2006,

title = {Averaging analysis approach for stability analysis of speed-sensorless induction motor drives with stator resistance estimation},

author = {M Saejia and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-32644434231&doi=10.1109%2fTIE.2005.862301&partnerID=40&md5=491acd5b0ad7891e7e6088080ded8061},

doi = {10.1109/TIE.2005.862301},

issn = {02780046},

year  = {2006},

date = {2006-01-01},

journal = {IEEE Transactions on Industrial Electronics},

volume = {53},

number = {1},

pages = {162-177},

abstract = {In this paper, the stability property of speed-sensorless induction motor drives with stator resistance estimation is analyzed using the averaging analysis technique. Explicit stability conditions are then derived to clarify analytically when the instability may occur and how the regressor vectors used in the estimation and the integral adaptation gains should be designed to assure stability. The derived stability conditions also reveal that the coupling between the speed and the stator resistance estimation loops is the main cause of instability and that stabilization of each individual estimation loop is necessary but insufficient to guarantee stability. Instead of the conventional regressor vectors that are shown to make the estimation unstable in some regenerative regions, two new regressor vectors are introduced to achieve stability for the whole operating conditions. Moreover, investigation of the persistently exciting (PE) conditions points out theoretically the loss of identifiability of the rotor speed and the stator resistance at no loads and at zero frequency operations. Validity of all the analytical results is verified by simulation and experiment. © 2006 IEEE.},

note = {cited By 42},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Suwankawin2002,

title = {A speed-sensorless IM drive with decoupling control and stability analysis of speed estimation},

author = {S Suwankawin and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036543772&doi=10.1109%2f41.993278&partnerID=40&md5=093fdc7e6bd7ff92e5af77a7b6a9fd1e},

doi = {10.1109/41.993278},

issn = {02780046},

year  = {2002},

date = {2002-01-01},

journal = {IEEE Transactions on Industrial Electronics},

volume = {49},

number = {2},

pages = {444-455},

abstract = {A new sensorless drive based on a decoupling control and an adaptive full-order observer is developed. A modified decoupling control is introduced and integrated with the adaptive observer to reduce the complexity of the whole system. The speed estimation based on adaptive control theory is analyzed and the necessary and sufficient conditions for stability of the speed estimation are analytically derived. It is indicated that the system can be unstable in the low-speed region with regenerative loads. However, assigning an appropriate feedback gain to the adaptive observer can restore the stability and reduce the unstable region. Sensitivity of the sensorless drive against parameter and measurement errors is also qualitatively discussed. Simulation and experimental results are then given to verify the validity of the theoretical results.},

note = {cited By 125},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kinpara1995,

title = {Slip‐Frequency‐Type Vector Control Equivalent to Flux‐Feedback Vector Control Using Flux Observer},

author = {Y Kinpara and S Doki and S Okuma and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84984474108&doi=10.1002%2feej.4391150212&partnerID=40&md5=ed58925178a0a17a81db772ae3df7a2e},

doi = {10.1002/eej.4391150212},

issn = {04247760},

year  = {1995},

date = {1995-01-01},

journal = {Electrical Engineering in Japan},

volume = {115},

number = {2},

pages = {123-134},

abstract = {The slip‐frequency type vector control and the flux‐feedback type vector control arc typical control methods of induction motors. It is shown that the two methods are similar except for a frame of reference. The flux‐feedback‐type vector control using the rectangular coordinate uses vertical and horizontal components of the rotor flux. The slip‐frequency type vector control using the polar coordinate employs absolute value and angle of the rotor flux. Usually, the flux‐feedback vector control does not use the rotor flux model but instead, the rotor flux observer for flux estimation. On the other hand, the slip‐frequency type control uses the rotor flux model. Therefore the slip‐frequency type vector control using the rotor flux observer is proposed. The proposed method is equivalent to the flux‐feedback type vector control using the rotor flux observer. Then it is more robust than the conventional slip‐frequency type vector control. Copyright © 1995 Wiley Periodicals, Inc., A Wiley Company},

note = {cited By 1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kinpara1994,

title = {The slip frequency type vector control equivalent to the flux feedback type vector control using the flux observer},

author = {Y Kinpara and S Doki and S Okuma and S Sangwongwanich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007986053&doi=10.1541%2fieejias.114.315&partnerID=40&md5=99cb3222337086fa8a3437f91cd73697},

doi = {10.1541/ieejias.114.315},

issn = {09136339},

year  = {1994},

date = {1994-01-01},

journal = {IEEJ Transactions on Industry Applications},

volume = {114},

number = {3},

pages = {315-324},

abstract = {The slip frequency type vector control and the flux feedback type vector control are typical control methods of induction motors. We show that two methods are some except for a frame of reference. The flux feedback type vector control using the rectangular coordinate uses vertical and horizontal components of the rotor flux. The slip frequency type vector control using the polar coordinate users absolute value and angle of the rotor flux. Usually, the flux feedback vector control dose not use the rotor flux model but uses the rotor flux observer for flux estimation. On the other hand, the slip frequency type control uses the rotor flux model. Therefore, we propose the slip frequency type vector control using the rotor flux observer. The proposed method is equivalent to the flux feedback type vector control using the rotor flux observer. Then it is more robust than the conventional slip frequency type vector control. © 1994, The Institute of Electrical Engineers of Japan. All rights reserved.},

note = {cited By 5},

keywords = {},

pubstate = {published},

tppubtype = {article}

}