Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590038
D. Ockhuis, Maarten J. Kampe
In this paper, a 2-D static finite element (S-FE) analysis method of a slip-magnetic coupling is proposed. The FE analysis method uses the frozen permeability technique, which allows the user to accurately determine the relevant model parameters by including the effects of saturation and cross-coupling. Moreover, the proposed analysis method accurately predicts the zero-sequence (3rd harmonic) and higher-order harmonic induced voltages and currents which are present in magnetic couplings. It is found that the zero-sequence and higher-order harmonic currents contribute to the net-torque of the magnetic coupling and their effects are more prevalent at low loads. The method is verified by means of comparing its results to those obtained from a commercial transient FE (T-FE) package. The S-FE method solutions are verified over a wide slip range, and are shown to be significantly less computationally time intensive compared to the T-FE package.
{"title":"Static-FE Harmonic Analysis of PM Slip Couplers","authors":"D. Ockhuis, Maarten J. Kampe","doi":"10.1109/OPTIM-ACEMP50812.2021.9590038","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590038","url":null,"abstract":"In this paper, a 2-D static finite element (S-FE) analysis method of a slip-magnetic coupling is proposed. The FE analysis method uses the frozen permeability technique, which allows the user to accurately determine the relevant model parameters by including the effects of saturation and cross-coupling. Moreover, the proposed analysis method accurately predicts the zero-sequence (3rd harmonic) and higher-order harmonic induced voltages and currents which are present in magnetic couplings. It is found that the zero-sequence and higher-order harmonic currents contribute to the net-torque of the magnetic coupling and their effects are more prevalent at low loads. The method is verified by means of comparing its results to those obtained from a commercial transient FE (T-FE) package. The S-FE method solutions are verified over a wide slip range, and are shown to be significantly less computationally time intensive compared to the T-FE package.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85291934","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590070
L. Ortombina, I. Husain, L. Alberti, N. Bianchi
A dual three-phase synchronous motor is considered as a fault-tolerant solution for a hybrid electric vehicle. The study presented here compares the characteristics of the motor under nominal and flux–weakening operations in different operating conditions such as healthy, half control, and post-fault conditions. The post-fault characteristics are analyzed under open-circuit faults of a three-phase system and short-circuit faults of a three-phase system. All the results are validated by experimental tests.
{"title":"Experimental Evaluation of Flux–Weakening Capability of Dual Three-Phase Synchronous Reluctance Motor","authors":"L. Ortombina, I. Husain, L. Alberti, N. Bianchi","doi":"10.1109/OPTIM-ACEMP50812.2021.9590070","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590070","url":null,"abstract":"A dual three-phase synchronous motor is considered as a fault-tolerant solution for a hybrid electric vehicle. The study presented here compares the characteristics of the motor under nominal and flux–weakening operations in different operating conditions such as healthy, half control, and post-fault conditions. The post-fault characteristics are analyzed under open-circuit faults of a three-phase system and short-circuit faults of a three-phase system. All the results are validated by experimental tests.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77709175","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590057
Zhenrui Zhang, Yancheng Liu, Haohao Guo, Xiaoling Liang, Pengming Yang
The finite control set model predictive current control (MPCC) method for permanent magnet synchronous motor (PMSM) is a simple control method but there are high current harmonics in the motor's three-phase current because of the limited number of voltage vectors. For this problem, a new amplitude model predictive current control (AMPCC) method based on the voltage amplitude in rotating coordinate reference system is proposed in this paper. By analyzing the motor's voltage model under rotating coordinate reference system, a suitable dynamic range of dq-axis voltage amplitude is designed for cost function. According to this range, the amplitude dynamic control set of prediction model is designed, and the optimal solution is selected by iterative method. The optimal vector is synthesized based on the real rotor position and optimal amplitude, so phase error of it is relatively small. And the dynamic amplitude range can reduce amplitude error, and thus a significant suppression of current ripple and prediction error. Meanwhile, the triangular function's avoidance in iterative calculation makes the algorithm compute less complex. Finally, this method is proved that it effectively reduces the current harmonics of the motor and improves the steady-state performance by building experimental verification.
{"title":"Amplitude Model Predictive Current Control Strategy for Permanent Magnet Synchronous Motor Drives","authors":"Zhenrui Zhang, Yancheng Liu, Haohao Guo, Xiaoling Liang, Pengming Yang","doi":"10.1109/OPTIM-ACEMP50812.2021.9590057","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590057","url":null,"abstract":"The finite control set model predictive current control (MPCC) method for permanent magnet synchronous motor (PMSM) is a simple control method but there are high current harmonics in the motor's three-phase current because of the limited number of voltage vectors. For this problem, a new amplitude model predictive current control (AMPCC) method based on the voltage amplitude in rotating coordinate reference system is proposed in this paper. By analyzing the motor's voltage model under rotating coordinate reference system, a suitable dynamic range of dq-axis voltage amplitude is designed for cost function. According to this range, the amplitude dynamic control set of prediction model is designed, and the optimal solution is selected by iterative method. The optimal vector is synthesized based on the real rotor position and optimal amplitude, so phase error of it is relatively small. And the dynamic amplitude range can reduce amplitude error, and thus a significant suppression of current ripple and prediction error. Meanwhile, the triangular function's avoidance in iterative calculation makes the algorithm compute less complex. Finally, this method is proved that it effectively reduces the current harmonics of the motor and improves the steady-state performance by building experimental verification.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89916780","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590026
M. Gireada, D. Hulea, O. Cornea, N. Muntean
In this paper, a novel high gain hybrid non-isolated magnetically-coupled switched-inductor dc-dc converter (HSIM) is proposed, which inherits advantages of both coupled and switched inductors dc-dc converters. The topology is derived from the classical tapped inductor boost converter by combining it with the hybrid switched inductor converter. Apart from the high voltage conversion ratio, the proposed topology can obtain soft-switching conditions and recycle the energy of leakage inductance through a voltage clamp circuit, resulting in a higher efficiency. On the cut off period of the rectifier diodes ZCS is achieved, which mitigates the reverse recovery process of the diodes. The main switch of the converter operates in ZCS at the turn on moment, resulting in lower switching losses. The operation principle, the states and the steady-state analysis of the converter are presented. A HSIM prototype was build and tested to verify the theoretical analysis. Preliminary simulation and experimental results are given which prove that the novel proposed topology is a possible candidate for high gain dc-dc conversion.
{"title":"A High Gain Hybrid non-isolated Magnetically-Coupled Switched-Inductor Converter","authors":"M. Gireada, D. Hulea, O. Cornea, N. Muntean","doi":"10.1109/OPTIM-ACEMP50812.2021.9590026","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590026","url":null,"abstract":"In this paper, a novel high gain hybrid non-isolated magnetically-coupled switched-inductor dc-dc converter (HSIM) is proposed, which inherits advantages of both coupled and switched inductors dc-dc converters. The topology is derived from the classical tapped inductor boost converter by combining it with the hybrid switched inductor converter. Apart from the high voltage conversion ratio, the proposed topology can obtain soft-switching conditions and recycle the energy of leakage inductance through a voltage clamp circuit, resulting in a higher efficiency. On the cut off period of the rectifier diodes ZCS is achieved, which mitigates the reverse recovery process of the diodes. The main switch of the converter operates in ZCS at the turn on moment, resulting in lower switching losses. The operation principle, the states and the steady-state analysis of the converter are presented. A HSIM prototype was build and tested to verify the theoretical analysis. Preliminary simulation and experimental results are given which prove that the novel proposed topology is a possible candidate for high gain dc-dc conversion.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85832262","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590023
Mihai P. Oproiu, Andrei Neagu, P. Cotfas, D. Cotfas, C. Mușuroi, M. Volmer
With the growth of Industry 4.0, cyber-physical systems are increasingly present in everyday life, thus optimizing traditional processes. This paper presents a solution for photovoltaic panel parameters monitoring application fully integrated into an IoT system. The application can record and process sensor data such as photovoltaic (PV) panel current, voltage, illuminance level, PV temperature as well as atmospheric pressure, ambient temperature, and humidity over a long-distance solution utilizing the LoRa Wide-Area Network protocol. The Internet of Things node is designed for security, accuracy and low power consumption, while also providing an established user interface through a proprietary software as a service Live Object platform. By utilizing Live Objects, complete IoT applications can be developed with the device and data management being handled by the platform. The advancements in terms of hardware and software configuration, sensor choice and operation are described. In this way, we can create a scalable and secure Internet of Things ecosystem using low-cost and power efficient devices, integrated in a secure and easy to use software as a service (SaaS) platform.
{"title":"LoRa Wide-Area Network and Live Objects Used in Renewable Energy Monitoring","authors":"Mihai P. Oproiu, Andrei Neagu, P. Cotfas, D. Cotfas, C. Mușuroi, M. Volmer","doi":"10.1109/OPTIM-ACEMP50812.2021.9590023","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590023","url":null,"abstract":"With the growth of Industry 4.0, cyber-physical systems are increasingly present in everyday life, thus optimizing traditional processes. This paper presents a solution for photovoltaic panel parameters monitoring application fully integrated into an IoT system. The application can record and process sensor data such as photovoltaic (PV) panel current, voltage, illuminance level, PV temperature as well as atmospheric pressure, ambient temperature, and humidity over a long-distance solution utilizing the LoRa Wide-Area Network protocol. The Internet of Things node is designed for security, accuracy and low power consumption, while also providing an established user interface through a proprietary software as a service Live Object platform. By utilizing Live Objects, complete IoT applications can be developed with the device and data management being handled by the platform. The advancements in terms of hardware and software configuration, sensor choice and operation are described. In this way, we can create a scalable and secure Internet of Things ecosystem using low-cost and power efficient devices, integrated in a secure and easy to use software as a service (SaaS) platform.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86036506","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590060
R. Inan, M. Z. Yırtar, H. Bülent Ertan
In this study, a method is developed to identify stator resistance of an induction motor (IM) at standstill in the self-tuning. An innovation-based adaptive extended Kalman filter (IAEKF) estimator in which the process noise is dynamically updated with an adaptive mechanism different from the conventional extended Kalman filter (EKF) is designed to estimate stator resistance with αβ- stator stationary axis components of stator current and αβ- components of stator flux of an IM. The reason for estimating the stator flux and stator current together with the stator resistance is to both increase the stability of the proposed estimator algorithm by using the correlation between the parameters and states in the non-linear inputs applied to the estimator and obtain the motor flux information needed by the control system. In the proposed IAEKF algorithm, a stator flux-based IM model is used for prediction purposes. The standstill estimation performance of the proposed novel IAEKF is tested with both sinusoidal and PWM power supplies, The real-time estimation results show the effectiveness and prediction accuracy of the proposed stochastic-based estimator.
{"title":"Standstill Estimation of Stator Resistance of Induction Motors with Novel Innovation-Based Adaptive Extended Kalman Filter","authors":"R. Inan, M. Z. Yırtar, H. Bülent Ertan","doi":"10.1109/OPTIM-ACEMP50812.2021.9590060","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590060","url":null,"abstract":"In this study, a method is developed to identify stator resistance of an induction motor (IM) at standstill in the self-tuning. An innovation-based adaptive extended Kalman filter (IAEKF) estimator in which the process noise is dynamically updated with an adaptive mechanism different from the conventional extended Kalman filter (EKF) is designed to estimate stator resistance with αβ- stator stationary axis components of stator current and αβ- components of stator flux of an IM. The reason for estimating the stator flux and stator current together with the stator resistance is to both increase the stability of the proposed estimator algorithm by using the correlation between the parameters and states in the non-linear inputs applied to the estimator and obtain the motor flux information needed by the control system. In the proposed IAEKF algorithm, a stator flux-based IM model is used for prediction purposes. The standstill estimation performance of the proposed novel IAEKF is tested with both sinusoidal and PWM power supplies, The real-time estimation results show the effectiveness and prediction accuracy of the proposed stochastic-based estimator.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83403464","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590051
P. Epure, D. Cotfas, A. Gurban, Mihai P. Oproiu, P. Cotfas, P. Epure
Soil measurements are important for agriculture as improper conditions can generate important losses. This paper presents a new IoT based system, created to monitor some important parameters for soil, such as solar illumination, air temperature, air humidity, soil humidity, soil pH, and total salt content. Measurements are performed using several microcontrollers, connected to each other, status information being generated, available on the cloud. In this respect, the goal of the proposed device is to perform useful measurements for agriculture applications and provide instruments to take the proper actions.
{"title":"IoT data acquisition system for soil evaluation","authors":"P. Epure, D. Cotfas, A. Gurban, Mihai P. Oproiu, P. Cotfas, P. Epure","doi":"10.1109/OPTIM-ACEMP50812.2021.9590051","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590051","url":null,"abstract":"Soil measurements are important for agriculture as improper conditions can generate important losses. This paper presents a new IoT based system, created to monitor some important parameters for soil, such as solar illumination, air temperature, air humidity, soil humidity, soil pH, and total salt content. Measurements are performed using several microcontrollers, connected to each other, status information being generated, available on the cloud. In this respect, the goal of the proposed device is to perform useful measurements for agriculture applications and provide instruments to take the proper actions.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83070609","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590047
Ahmed Hembel, Hao Ding, Leyue Zhang, B. Sarlioglu
The objective of this paper is to design a newly conceived high-speed integrated motor-compressor (IMC) based on a switched reluctance machine (SRM) and to evaluate four different designs by changing the stator tooth thickness and skew angle between stator and rotor. The proposed reluctance-based machine is a magnet-less machine which makes the compressor unit low cost as well as allows for higher operating temperatures. The rotor of the proposed integrated machine has poles shaped like airfoils, functioning as both a rotor of the motor as well as an axial fan. It can rotate to draw air into the rotor and accelerate the flow through the rotor stage. The high-speed flow provides forced convection to the rotor, stator, windings, and magnets. In this work, the high-speed performance of the motor as well as the characterization of motor parameters are evaluated by finite element analysis (FEA).
{"title":"Design and Performance Evaluation of a High-Speed Switched-Reluctance Integrated Motor-Compressor","authors":"Ahmed Hembel, Hao Ding, Leyue Zhang, B. Sarlioglu","doi":"10.1109/OPTIM-ACEMP50812.2021.9590047","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590047","url":null,"abstract":"The objective of this paper is to design a newly conceived high-speed integrated motor-compressor (IMC) based on a switched reluctance machine (SRM) and to evaluate four different designs by changing the stator tooth thickness and skew angle between stator and rotor. The proposed reluctance-based machine is a magnet-less machine which makes the compressor unit low cost as well as allows for higher operating temperatures. The rotor of the proposed integrated machine has poles shaped like airfoils, functioning as both a rotor of the motor as well as an axial fan. It can rotate to draw air into the rotor and accelerate the flow through the rotor stage. The high-speed flow provides forced convection to the rotor, stator, windings, and magnets. In this work, the high-speed performance of the motor as well as the characterization of motor parameters are evaluated by finite element analysis (FEA).","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86467971","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590044
I. A. Ayad, E. Elwarraki, Baghdadi Mohamed
This paper deals the output voltage control of DC-DC converters in particular the three level boost converter (TLBC). Based on the TLBC mathematical average model, a nonlinear controller using backstepping approach is designed in order to overcome the converter complexity, varying time and nonlinearity. A backstepping control law is determined based on a recursive and systematic design method by two strategy: (i) direct output voltage control and (ii) indirect output voltage control. Besides, the TLBC stability is proved using Lyapunov function criterions. Finally, a variable step and sinusoidal signal in the reference voltage used to validate the establish controller in the Matlab/Simulink software. The simulation results highlight the backstepping approach effectiveness.
{"title":"A Robust Nonlinear Controller for Multilevel DC/DC Boost Converter","authors":"I. A. Ayad, E. Elwarraki, Baghdadi Mohamed","doi":"10.1109/OPTIM-ACEMP50812.2021.9590044","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590044","url":null,"abstract":"This paper deals the output voltage control of DC-DC converters in particular the three level boost converter (TLBC). Based on the TLBC mathematical average model, a nonlinear controller using backstepping approach is designed in order to overcome the converter complexity, varying time and nonlinearity. A backstepping control law is determined based on a recursive and systematic design method by two strategy: (i) direct output voltage control and (ii) indirect output voltage control. Besides, the TLBC stability is proved using Lyapunov function criterions. Finally, a variable step and sinusoidal signal in the reference voltage used to validate the establish controller in the Matlab/Simulink software. The simulation results highlight the backstepping approach effectiveness.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74360945","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}
Pub Date : 2021-09-02DOI: 10.1109/OPTIM-ACEMP50812.2021.9590077
R. Köster, A. Binder
The market for large wind turbine generators experiences a trend towards steadily increasing rated unit power. This development requires generator solutions with high power density. In case of low-maintenance, low-speed direct drive synchronous generators, HTS excitation windings offer potentials by allowing for a higher electromagnetic utilization. As today’s commercially available HTS tapes are still rather expensive, this work addresses the need for both a light weight and cost effective design by a 2D-FEM simulation based study of basic machine parameters.
{"title":"Cost-Oriented Design Considerations on Direct-Drive Wind Turbine Generators with Superconducting Excitation Winding","authors":"R. Köster, A. Binder","doi":"10.1109/OPTIM-ACEMP50812.2021.9590077","DOIUrl":"https://doi.org/10.1109/OPTIM-ACEMP50812.2021.9590077","url":null,"abstract":"The market for large wind turbine generators experiences a trend towards steadily increasing rated unit power. This development requires generator solutions with high power density. In case of low-maintenance, low-speed direct drive synchronous generators, HTS excitation windings offer potentials by allowing for a higher electromagnetic utilization. As today’s commercially available HTS tapes are still rather expensive, this work addresses the need for both a light weight and cost effective design by a 2D-FEM simulation based study of basic machine parameters.","PeriodicalId":32117,"journal":{"name":"Bioma","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81024700","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}
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