{"title":"A new approach for a complete and ultrafast analysis of PMSMs using the arbitrary injection scheme","authors":"Jan Friedmann, R. Hoffmann, R. Kennel","doi":"10.1109/SLED.2016.7518803","DOIUrl":"https://doi.org/10.1109/SLED.2016.7518803","url":null,"abstract":"This paper proposes a new method for the complete and ultrafast measurement of magnetic properties of PMSMs. The measurement results are utilized for sensorless control of a multiple salient motor. The method is able to determine the machine's inductance parameters dependent on the load state and on the rotor position in minutes for the PMSMs whole operating range. The presented scheme is based on an encoderless predictive torque control algorithm firstly published by Landsmann et. al. [1], that evolved to a field-oriented encoderless control algorithm [2]-[4]. The scheme enables the user to identify and to separate magnetic influences from different causes, i.e. permanent magnet flux, the current induced magnetic flux and their interaction in an operating machine. The method is derived geometrically from an online mean admittance estimation and validated by simulation and experiment. A surface mounted PMSM is then investigated with this new measurement method, the harmonics and their causes are identified. The measured harmonic spectra are finally used in a sensorless control scheme in order to improve the position estimation for the investigated machine showing multiple saliencies.","PeriodicalId":427939,"journal":{"name":"2016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131538561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the torque accuracy of stator flux observer based induction machine control","authors":"M. Schubert, D. Scharfenstein, R. D. De Doncker","doi":"10.1109/SLED.2016.7518791","DOIUrl":"https://doi.org/10.1109/SLED.2016.7518791","url":null,"abstract":"Due to the nonlinear nature of the induction machine model parameters, accurate torque control of induction machine drives that targets a deviation below five percent becomes a challenging task. In field oriented or direct torque control algorithms, the use of a voltage model stator flux observer may be considered as a very promising approach to achieve superior torque accuracy, because the voltage model is basically only sensitive to stator resistance deviation. In this paper, the torque accuracy of a direct field oriented control algorithm, based on a Gopinath-style stator flux observer, is analyzed. The sensitivity to parameter deviation, model accuracy and inverter related inaccuracies is separated. Measurements show, that torque accuracy is limited. Possible causes for the remaining torque deviation and the limits of the control algorithm are discussed.","PeriodicalId":427939,"journal":{"name":"2016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122450552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Model-based sensorless control of IPMSM enhancing robustness based on the estimation of speed error","authors":"Younggi Lee, S. Sul","doi":"10.1109/SLED.2016.7518796","DOIUrl":"https://doi.org/10.1109/SLED.2016.7518796","url":null,"abstract":"In this paper, new model-based sensorless control methods are proposed, including estimation methods for the position and speed errors and compatible position and speed estimators. In proposed methods, the speed error is estimated as well as the position error in the conventional model-based sensorless methods. By the proposed methods, unity transfer function from actual position to estimated position can be achieved eliminating the effects of load disturbances. It means that the position error would be ideally zero even in transient situations. Experimental results verify the effectiveness of the proposed methods under severe speed transient (20,000 r/min/s) and load torque transient (20 p.u./s). With the proposed methods, position error has been conspicuously reduced by 60% at speed transient and by 70% at load torque transient in high speed region.","PeriodicalId":427939,"journal":{"name":"2016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132044248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"5 Ways to be sensorless: Knowledge of the system is the first step to control","authors":"Ted Hopper","doi":"10.1109/SLED.2016.7518790","DOIUrl":"https://doi.org/10.1109/SLED.2016.7518790","url":null,"abstract":"This paper presents 5 different practical implementations of sensorless identification methods for the commutation, speed and in part position control of electric motors, along with their principles of operation. This was a guest paper at the 2016 IEEE 7th International Symposium on Sensorless Control for Electrical Drives (SLED).","PeriodicalId":427939,"journal":{"name":"2016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117229394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Implementation issues of sliding mode observer for sensorless field oriented control of PMSM using TMS320F2812","authors":"Hrishikesh Mehta, V. Joshi, P. Kurulkar","doi":"10.1109/SLED.2016.7518798","DOIUrl":"https://doi.org/10.1109/SLED.2016.7518798","url":null,"abstract":"The sliding mode observer is a very promising approach for position sensorless control of Permanent Magnet Synchronous Motors due to its robustness and parameter insensitivity. However it was observed that estimation of rotor flux position was affected due to measurement noise and phase shift introduced due to low pass filtering. In this paper, the authors discuss key issues related to implementation of sliding mode observer based sensorless field oriented control of Permanent Magnet Synchronous Motor and propose different approaches to improve rotor flux estimation. An experimental lab setup is designed and implemented on a 400W PMSM motor. Texas Instrument's TMS320F2812 DSP is used in the drive as the central controller to fulfill the demands of exhaustive real time computations by vector control and sliding mode observer.","PeriodicalId":427939,"journal":{"name":"2016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131407802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Accetta, D. Aitchison, G. Cirrincione, M. Cirrincione, M. Pucci, A. Sferlazza
{"title":"Sensorless induction machine drive for fly-wheel generation unit based on a TLS-based non-linear observer","authors":"A. Accetta, D. Aitchison, G. Cirrincione, M. Cirrincione, M. Pucci, A. Sferlazza","doi":"10.1109/SLED.2016.7518794","DOIUrl":"https://doi.org/10.1109/SLED.2016.7518794","url":null,"abstract":"This paper proposes a sensorless technique for an induction machine Flywheel Energy Storage System (FESS) based on a non-linear observer integrated with a total least-squares speed estimator taking into consideration the IM (Induction Machine) saturation effects. The nonlinear observer is based on an original formulation of the dynamic model of the IM including the magnetic saturation, rearranged in a space-state form, after assuming as state variables the stator current and the rotor magnetizing current space-vectors in the stator reference frame. The choice of the observer gain has been made by the use of Lyapunov's method. The speed signal needed by the non-linear observer for the flux estimation is provided by the Total Least Square (TLS) based speed estimator, which itself takes into consideration the magnetic saturation for the speed estimation. The proposed nonlinear observer has been tested in numerical simulation and verified experimentally on a suitably developed test set-up, demonstrating its applicability as far as FESS is concerned.","PeriodicalId":427939,"journal":{"name":"2016 IEEE Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"432 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123038447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}