A. Yousefi-Talouki, Fausto Stella, S. Odhano, Liliana de Lilo, A. Trentin, G. Pellegrino, P. Zanchetta
{"title":"Sensorless control of matrix converter-fed synchronous reluctance motor drives","authors":"A. Yousefi-Talouki, Fausto Stella, S. Odhano, Liliana de Lilo, A. Trentin, G. Pellegrino, P. Zanchetta","doi":"10.1109/SLED.2017.8078421","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078421","url":null,"abstract":"This paper presents a sensorless control technique based on direct flux vector control (DFVC) method for synchronous reluctance (SyR) motor drives fed by a three-phase to three-phase matrix converter (MC). Rotor position is estimated based on active flux (AF) concept down to 50 [rpm]. Furthermore, the effect of nonlinear voltage errors of the MC is compensated, and a self-commissioning method capable of identifying the voltage error before compensation is presented and tested. The proposed drive combines the advantages of matrix converters and SyR motors in sensorless fashion, for application into a number of fields, spanning from compact drives for aviation to line-supplied drives for industry applications. Experimental results are provided to prove the feasibility of the proposed technique.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122624552","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":"Anisotropy-based position estimation approach for symmetrical dual three-phase permanent magnet synchronous machines","authors":"M. Roetzer, U. Vollmer, Lei Chen, R. Kennel","doi":"10.1109/SLED.2017.8078447","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078447","url":null,"abstract":"This paper describes a position estimation approach based on high-frequency voltage injections for dual three-phase permanent magnet synchronous machines (DTP-PMSM) whose sets of windings are spatially shifted by 360 electrical degrees. Fail-operational drives gain more and more importance in automotive applications. Typically, multiphase machines are used to realize fail-operational properties. Besides the machine, also the sensing of the phase currents and the rotor position has to be fault-tolerant. It is therefore obvious to reduce the overall system cost by using sensorless control methods as a monitoring and fallback solution in fail-operational drives. In this paper, the sensorless capability of the symmetrical dual three-phase machine at zero and low speed is investigated. It is shown that, compared to an ordinary three phase machine, this type of machine enables a significant reduction of both the torque and battery current ripples produced by high-frequency voltage injections. Moreover, it is shown that, under certain conditions, the proposed injection method reduces the acoustic noise produced by voltage injections. The proposed injection method is furthermore implemented in a “slowly-sampled” control system, in which the sample rate of the controller is chosen several times lower than the PWM frequency. For this purpose, a suitable position estimation approach is developed. Experimental results show the effectiveness of this method.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133071579","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":"Enhancing self-sensing estimation accuracy via negative sequence current image registration, with evaluation on a low saliency ratio machine","authors":"Timothy Slininger, R. Lorenz","doi":"10.1109/SLED.2017.8078435","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078435","url":null,"abstract":"Image tracking self-sensing, which utilizes image registration to localize an arc of the negative sequence current response to a high frequency rotating voltage injection within a negative sequence template, can enhance estimation accuracy, increase tolerance to noise, and improve dynamic performance. Image registration over a full injection cycle replaces the heterodyning demodulation used in traditional point-tracking methods. Demodulation is known to produce significant harmonic content that must be filtered. Image registration mitigates dynamic degradation since there is no longer a need for low pass filtering of the harmonic content, tightly tuned filtering of the negative sequence, or decoupling of multiple saliencies from the negative sequence. This paper proposes how, by carefully considering the machine properties at an operating point, details of the current response can be used to generate a complex template image. This paper shows how image registration of the sampled image over a full injection cycle with the complex template allows for a more accurate estimate of position when compared to point-tracking methods, while removing various filters to improve dynamic performance. These methods are evaluated experimentally on a low saliency ratio SPM and compared to classical rotating HFI methods.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133476394","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}
C. M. Verrelli, S. Bifaretti, A. Lidozzi, L. Solero, F. Crescimbini
{"title":"Sensorless control for PM-machine based generating units","authors":"C. M. Verrelli, S. Bifaretti, A. Lidozzi, L. Solero, F. Crescimbini","doi":"10.1109/SLED.2017.8078455","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078455","url":null,"abstract":"1Simple adaptations of the latest design ideas in [2] suggest the existence of a new observer to be used for sensorless speed control of (nonsalient-pole surface) permanent magnets synchronous machines. The rotor speed measurement-assumed to be measured in [2] by a low-resolution transducer providing a single pulse per revolution — is here replaced by the output of a PLL (Phase Locked Loop) block that is based on a third-order Steady-State Linear Kalman Filter (SSLKF). Experimental results concerning the new observer are provided.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133987301","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":"Self-sensing control of induction machines using an additional short-circuited rotor coil","authors":"S. Luecke, A. Mertens","doi":"10.1109/SLED.2017.8078420","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078420","url":null,"abstract":"This paper presents a self-sensing control for an induction machine over a wide speed range, introducing a method which combines an EMF-based and a saliency-based approach. The major advantage of the proposed method is a simple-to-implement estimator for the entire speed range with low computational effort and an arbitrary high-frequency injection. Furthermore, a novel rotor design of an induction machine is suggested using an additional short-circuit coil. The integration of such a coil generates resistive and inductive saliencies which are mainly effective for high frequencies. Thus, the self-sensing ability for the low speed range can be significantly improved.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116415736","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. Kraemer, Valentin Heusinger, Simon Schad, Abid Ali
{"title":"Sensorless vector control of PMSM with observer-based phase current reconstruction using only a DC-link current sensor","authors":"A. Kraemer, Valentin Heusinger, Simon Schad, Abid Ali","doi":"10.1109/SLED.2017.8078445","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078445","url":null,"abstract":"This paper presents a sensorless vector control algorithm for permanent magnet synchronous machines. This scheme uses a single current sensing resistor in the DC-Link in combination with a linear parameter varying (LPV) observer to reconstruct the phase currents of the motor. These reconstructed phase currents are used as input to a model reference adaptive system in order to estimate the angle and the speed of the motor. The DC-Link current sensor is consequently the only sensor in the whole system which can be used for motor control. The proposed control scheme is implemented on a 32-bit microcontroller. Experimental results of the real-time control of a fuel pump motor are presented.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122884455","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}
M. Tursini, M. Villani, G. Fabri, Simone Paolini, A. Credo, A. Fioravanti
{"title":"Sensorless control of a synchronous reluctance motor by finite elements model results","authors":"M. Tursini, M. Villani, G. Fabri, Simone Paolini, A. Credo, A. Fioravanti","doi":"10.1109/SLED.2017.8078424","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078424","url":null,"abstract":"This paper concerns the development of a sensorless controller for synchronous reluctance motors based on finite elements model results. A hybrid solution is used, which includes an adaptive observer for not-zero speed operation and signal injection for standstill. The observer detects the flux linkages components in the two-phase stationary reference frame by the voltage model integration and closed loop correction feedback. This last is provided by a non-linear model of the rotor-fixed frame flux components achieved by finite elements computations. The rotor speed and position are identified by a phase-locked-loop algorithm. To improve the observer performance, the mechanical model is considered, which accounts for the finite elements mapping of the motor torque. The study is applied to a prototype of synchronous reluctance motor with flux barriers rotor, designed to have the same stator core of a commercial three-phase 3kW induction motor. Both realistic simulations (accounting for the non-linear machine behavior) and experimental test are presented, showing the performance of the proposed solution.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120954004","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":"Integral sliding-mode direct torque control of sensorless induction motor drives","authors":"A. Dannier, A. Del Pizzo, L. D. di Noia, S. Meo","doi":"10.1109/SLED.2017.8078457","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078457","url":null,"abstract":"The paper deals with a full sliding mode approach for induction motor drives direct torque and flux control. The proposed solution is composed by an integral sliding-mode control and by a speed-sensorless sliding mode observer. The suggested Integral Sliding-Mode Direct Torque Control (ISMDTC) is formulated in the stator flux reference frame, without employing current regulators. The adopted sliding mode observer provides stator-flux and torque estimation, without rotor-speed adaptation. The numerical results show that the ISMDTC maintains the robustness of the sliding controller, reducing the chattering during the steady state. Moreover, it consents to achieve similar performance like more complex second-order SMC offering more simple implementation. The ISMDTC assures good accuracy and robustness to parameters deviations at low-speed operations as well as in all the operative range of the IM drives. For proving the goodness of the proposal the suggested control is also compared with a conventional DTC control.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124507145","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}
S. Foti, A. Testa, S. de Caro, T. Scimone, M. Pulvirenti
{"title":"Sensorless field oriented control of multiple-motors fed by multiple-converters systems","authors":"S. Foti, A. Testa, S. de Caro, T. Scimone, M. Pulvirenti","doi":"10.1109/SLED.2017.8078456","DOIUrl":"https://doi.org/10.1109/SLED.2017.8078456","url":null,"abstract":"On Multiple-Motor systems fed by Multiple-Converter systems a set of electric motor drives share the load through a common mechanical coupling. Such a coupling is exploited in this paper to realize a sensorless field oriented control, based on a quite common back-emf technique to estimate the rotor flux angular position and an original approach to correct the estimation errors. The technique is based on the injection of very low frequency, sinusoidal signals on the current references of one of the motor drives. If the estimated rotor flux position is correct, the drive output torque does not show variations. Differently, if the estimation is incorrect, a torque ripple is generated at the frequency of the injected signal, whose effects on the system speed are easily compensated by the main speed controller. However, due to the mechanical coupling, an additional component of the reference torque current at the frequency of the injected signals is generated on all the other drives. By minimizing this component, the rotor flux position estimation can be effectively corrected, as well as errors in estimating the stator and rotor resistances.","PeriodicalId":386486,"journal":{"name":"2017 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115056968","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}