Pub Date : 2014-09-29DOI: 10.1109/EPE.2014.6910737
Yuling Li, Pengfei Li, Yuzha Chen, Dehua Zhang
A single-stage three-phase current source inverter (CSI) using in photovoltaic grid-connected (PVGC) system is investigated. A dynamic predictive optimal control (DPOC) strategy for grid current is presented. In this method, based on a predictive model of grid current and real-time dynamic optimization cost function, an optimal control action for the next sampling interval is achieved in advance. In addition, a perturbing resistance maximum power point tracking (PR-MPPT) algorithm is proposed for the CSI PVGC system. The algorithm is implemented by perturbing resistance instead of perturbing current or voltage in conventional perturbation and observation (P&O) MPPT method. The PR-MPPT algorithm can solve the issues of current instability and power dropping instantly at the right side of maximum power point (MPP) of P-I curves in CSI PVGC system. With the proposed methods, the CSI PVGC system achieves the features of simple circuit, good stability and fast dynamic response and MPPT function. Experimental results validate the feasibility of the proposed work.
{"title":"Single-stage three-phase current-source inverter for photovoltaic grid-connected system","authors":"Yuling Li, Pengfei Li, Yuzha Chen, Dehua Zhang","doi":"10.1109/EPE.2014.6910737","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910737","url":null,"abstract":"A single-stage three-phase current source inverter (CSI) using in photovoltaic grid-connected (PVGC) system is investigated. A dynamic predictive optimal control (DPOC) strategy for grid current is presented. In this method, based on a predictive model of grid current and real-time dynamic optimization cost function, an optimal control action for the next sampling interval is achieved in advance. In addition, a perturbing resistance maximum power point tracking (PR-MPPT) algorithm is proposed for the CSI PVGC system. The algorithm is implemented by perturbing resistance instead of perturbing current or voltage in conventional perturbation and observation (P&O) MPPT method. The PR-MPPT algorithm can solve the issues of current instability and power dropping instantly at the right side of maximum power point (MPP) of P-I curves in CSI PVGC system. With the proposed methods, the CSI PVGC system achieves the features of simple circuit, good stability and fast dynamic response and MPPT function. Experimental results validate the feasibility of the proposed work.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"1 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88732109","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910998
Je-Wook Park, Won-Sang Im, Dong-Yoon Kim, Jang-Mok Kim
The wheelchair motion has propulsion and rotation components and the x-y axis signals of the joystick also can be expressed as the control command of these components. Using this phenomenon, the torque distribution method of two driving wheels and the model following control algorithm based on the propulsion and the rotation model of the electric wheelchair is proposed. The proposed torque distribution method gives smooth and precise driving performance on the land because the torque references of each wheel are continuous and sinusoidal according to the joystick position. Moreover, comfortable control performance can be obtained by adjusting the sensitivity coefficients of the joystick. On the various road conditions, it is possible to move safely because the model following controller gives the compensated torque to each wheel to track the model speed and direction even if one wheel is fixed by an obstacle. The feasibility of the proposed safe driving algorithm is verified through digital simulations.
{"title":"Safe driving algorithm of the electric wheelchair with model following control","authors":"Je-Wook Park, Won-Sang Im, Dong-Yoon Kim, Jang-Mok Kim","doi":"10.1109/EPE.2014.6910998","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910998","url":null,"abstract":"The wheelchair motion has propulsion and rotation components and the x-y axis signals of the joystick also can be expressed as the control command of these components. Using this phenomenon, the torque distribution method of two driving wheels and the model following control algorithm based on the propulsion and the rotation model of the electric wheelchair is proposed. The proposed torque distribution method gives smooth and precise driving performance on the land because the torque references of each wheel are continuous and sinusoidal according to the joystick position. Moreover, comfortable control performance can be obtained by adjusting the sensitivity coefficients of the joystick. On the various road conditions, it is possible to move safely because the model following controller gives the compensated torque to each wheel to track the model speed and direction even if one wheel is fixed by an obstacle. The feasibility of the proposed safe driving algorithm is verified through digital simulations.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"142 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88996510","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910689
J. Klock, W. Schumacher
This paper presents a lumped parameter model describing the electromagnetic behavior of Transverse Flux Reluctance Machines. Current dynamics and torque generation are obtained utilizing varying magnetic conductivities of the air gap along the rotor perimeter. The model parameters are identified experimentally using a high accuracy current control for sinusoidal reference currents. A low torque ripple mode of operation is proposed.
{"title":"Modeling and control of Transverse Flux Reluctance Machines","authors":"J. Klock, W. Schumacher","doi":"10.1109/EPE.2014.6910689","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910689","url":null,"abstract":"This paper presents a lumped parameter model describing the electromagnetic behavior of Transverse Flux Reluctance Machines. Current dynamics and torque generation are obtained utilizing varying magnetic conductivities of the air gap along the rotor perimeter. The model parameters are identified experimentally using a high accuracy current control for sinusoidal reference currents. A low torque ripple mode of operation is proposed.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"5 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81800219","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910789
Diane-Perle Sadik, J. Colmenares, D. Peftitsis, G. Tolstoy, J. Rąbkowski, H. Nee
An experimental analysis of the behavior under short-circuit conditions of three different Silicon Carbide (SiC) 1200 V power devices is presented. It is found that all devices take up a substantial voltage, which is favorable for detection of short-circuits. A suitable method for short-circuit detection without any comparator is demonstrated. A SiC JFET driver with an integrated short-circuit protection (SCP) is presented where a short-circuit detection is added to a conventional driver design in a simple way. Experimental tests of the SCP driver operating under short-circuit condition and under normal operation are performed successfully.
{"title":"Analysis of short-circuit conditions for silicon carbide power transistors and suggestions for protection","authors":"Diane-Perle Sadik, J. Colmenares, D. Peftitsis, G. Tolstoy, J. Rąbkowski, H. Nee","doi":"10.1109/EPE.2014.6910789","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910789","url":null,"abstract":"An experimental analysis of the behavior under short-circuit conditions of three different Silicon Carbide (SiC) 1200 V power devices is presented. It is found that all devices take up a substantial voltage, which is favorable for detection of short-circuits. A suitable method for short-circuit detection without any comparator is demonstrated. A SiC JFET driver with an integrated short-circuit protection (SCP) is presented where a short-circuit detection is added to a conventional driver design in a simple way. Experimental tests of the SCP driver operating under short-circuit condition and under normal operation are performed successfully.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"35 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84644031","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910700
H. Tamura, T. Ajima, Yasuo Noto, J. Itoh
This paper presents a method for reducing a motor torque ripple resulting from a motor phase current sensor offset error for motor drive applications such as a hybrid electric vehicle. The proposed method estimates the motor phase current sensor offset error on the basis of the direct voltage value included in the voltage source inverter output voltage reference value calculated by a discrete Fourier transform. It then compensates for the motor phase current sensor offset error by subtracting the estimated motor phase current sensor offset error value from the detected motor phase current value. Its main feature is its ability to compensate for the motor phase current sensor offset error that varies due to temperature change while a voltage source inverter and a motor are driven. The effectiveness of the proposed method for reducing the motor torque ripple with reference to simulation results is discussed in detail. These simulation results reveal that the proposed method can compensate for the motor phase current sensor offset error with less than or equal to +-1[A] difference and reduce the average value of the motor torque ripple to half (1/2) of that without the proposed method in steady state in which the motor torque reference is from 10[Nm] to 80[Nm] and the motor rotation speed is 1000[rpm]. Also, in the transient conditions in which the motor rotation speed and the motor torque reference vary, the motor phase current sensor offset error can be compensated for normally, and the stable motor torque without a motor torque ripple of a fundamental frequency component can be obtained.
{"title":"A compensation method for a motor phase current sensor offset error using a voltage-source-inverter output voltage reference value","authors":"H. Tamura, T. Ajima, Yasuo Noto, J. Itoh","doi":"10.1109/EPE.2014.6910700","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910700","url":null,"abstract":"This paper presents a method for reducing a motor torque ripple resulting from a motor phase current sensor offset error for motor drive applications such as a hybrid electric vehicle. The proposed method estimates the motor phase current sensor offset error on the basis of the direct voltage value included in the voltage source inverter output voltage reference value calculated by a discrete Fourier transform. It then compensates for the motor phase current sensor offset error by subtracting the estimated motor phase current sensor offset error value from the detected motor phase current value. Its main feature is its ability to compensate for the motor phase current sensor offset error that varies due to temperature change while a voltage source inverter and a motor are driven. The effectiveness of the proposed method for reducing the motor torque ripple with reference to simulation results is discussed in detail. These simulation results reveal that the proposed method can compensate for the motor phase current sensor offset error with less than or equal to +-1[A] difference and reduce the average value of the motor torque ripple to half (1/2) of that without the proposed method in steady state in which the motor torque reference is from 10[Nm] to 80[Nm] and the motor rotation speed is 1000[rpm]. Also, in the transient conditions in which the motor rotation speed and the motor torque reference vary, the motor phase current sensor offset error can be compensated for normally, and the stable motor torque without a motor torque ripple of a fundamental frequency component can be obtained.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"53 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90657701","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910954
D. Vasić, F. Costa
Piezoelectric transformers have been used successfully in DC/AC or DC/DC converter. However, the use of piezoelectric transformers presents a major challenges for power electronic design: the capacitive nature of such devices makes their use delicate as the instantaneous power may be much greater than the average effective power. Due to this challenge, conventional drive circuits, especially inductor, become too bulky. This work describes a converter suitable to drive piezoelectric transformer with low inductor. The proposed converter is a DC/AC structure, which is capable of producing a unipolar square voltage. The circuit provides for recovery of the energy stored on the clamped capacitance back to the primary power supply when the transformer is de-energized. In our design, an auxiliary shunt circuits are connected to the input terminal. The proposed structure of both theoretical and experimental validations has demonstrated the effectiveness of the proposed technique for recovery energy.
{"title":"Energy recovery DC/AC converter for piezoelectric transformer","authors":"D. Vasić, F. Costa","doi":"10.1109/EPE.2014.6910954","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910954","url":null,"abstract":"Piezoelectric transformers have been used successfully in DC/AC or DC/DC converter. However, the use of piezoelectric transformers presents a major challenges for power electronic design: the capacitive nature of such devices makes their use delicate as the instantaneous power may be much greater than the average effective power. Due to this challenge, conventional drive circuits, especially inductor, become too bulky. This work describes a converter suitable to drive piezoelectric transformer with low inductor. The proposed converter is a DC/AC structure, which is capable of producing a unipolar square voltage. The circuit provides for recovery of the energy stored on the clamped capacitance back to the primary power supply when the transformer is de-energized. In our design, an auxiliary shunt circuits are connected to the input terminal. The proposed structure of both theoretical and experimental validations has demonstrated the effectiveness of the proposed technique for recovery energy.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"96 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87806463","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910788
Hong Li, Zhichang Yang, T. Zheng, Bo Zhang, Hu Sun
The transformerless photovoltaic (TPV) inverters can cause serious common-mode electromagnetic interference (EMI) due to the parasitic capacitors between the solar arrays and ground. In this paper, chaotic SPWM is firstly proposed to suppress the common-mode EMI in TPV inverters. The EMI suppression mechanism of chaotic SPWM is introduced, and chaotic SPWM is further applied into a single-phase TPV inverter, the equivalent common-mode current loop of the single-phase TPV inverter is established, moreover, the common mode currents of the TPV inverter under SPWM and chaotic SPWM are given and their spectra are analyzed. Finally, the simulation and experiment results validate the effectiveness of chaotic SPWM in common-mode EMI suppression.
{"title":"Common-mode EMI suppression based on chaotic SPWM for a single-phase transformerless photovoltaic inverter","authors":"Hong Li, Zhichang Yang, T. Zheng, Bo Zhang, Hu Sun","doi":"10.1109/EPE.2014.6910788","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910788","url":null,"abstract":"The transformerless photovoltaic (TPV) inverters can cause serious common-mode electromagnetic interference (EMI) due to the parasitic capacitors between the solar arrays and ground. In this paper, chaotic SPWM is firstly proposed to suppress the common-mode EMI in TPV inverters. The EMI suppression mechanism of chaotic SPWM is introduced, and chaotic SPWM is further applied into a single-phase TPV inverter, the equivalent common-mode current loop of the single-phase TPV inverter is established, moreover, the common mode currents of the TPV inverter under SPWM and chaotic SPWM are given and their spectra are analyzed. Finally, the simulation and experiment results validate the effectiveness of chaotic SPWM in common-mode EMI suppression.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"14 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86967419","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910874
N. Mukherjee, D. Strickland, M. A. Varnosfaderani
There is an increasing call for applications which use a mixture of batteries. These hybrid battery solutions may contain different battery types for example; using second life ex-transportation batteries in grid support applications or a combination of high power, low energy and low power, high energy batteries to meet multiple energy requirements or even the same battery types but under different states of health for example, being able to hot swap out a battery when it has failed in an application without changing all the batteries and ending up with batteries with different performances, capacities and impedances. These types of applications typically use multi-modular converters to allow hot swapping to take place without affecting the overall performance of the system. A key element of the control is how the different battery performance characteristics may be taken into account and the how the power is then shared among the different batteries in line with their performance. This paper proposes a control strategy which allows the power in the batteries to be effectively distributed even under capacity fade conditions using adaptive power sharing strategy. This strategy is then validated against a system of three different battery types connected to a multi-modular converter both with and without capacity fade mechanisms in place.
{"title":"Adaptive control of hybrid battery energy storage systems under capacity fade","authors":"N. Mukherjee, D. Strickland, M. A. Varnosfaderani","doi":"10.1109/EPE.2014.6910874","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910874","url":null,"abstract":"There is an increasing call for applications which use a mixture of batteries. These hybrid battery solutions may contain different battery types for example; using second life ex-transportation batteries in grid support applications or a combination of high power, low energy and low power, high energy batteries to meet multiple energy requirements or even the same battery types but under different states of health for example, being able to hot swap out a battery when it has failed in an application without changing all the batteries and ending up with batteries with different performances, capacities and impedances. These types of applications typically use multi-modular converters to allow hot swapping to take place without affecting the overall performance of the system. A key element of the control is how the different battery performance characteristics may be taken into account and the how the power is then shared among the different batteries in line with their performance. This paper proposes a control strategy which allows the power in the batteries to be effectively distributed even under capacity fade conditions using adaptive power sharing strategy. This strategy is then validated against a system of three different battery types connected to a multi-modular converter both with and without capacity fade mechanisms in place.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"1 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85352860","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 : 2014-09-29DOI: 10.1109/EPE.2014.6910896
A. Aguilar, S. Munk‐Nielsen
Permanent magnet biasing, is a known technique for increasing the energy storage capability of inductors operating in DC applications. The opposing flux introduced by a permanent magnet will extend the saturation flux limit of a given magnetic material. When full biasing of the core is achieved, the effective saturation current limit of a given inductor is doubled. This results in a smaller requirement in number of turns and area cross-section, allowing for smaller and/or more efficient inductors. By adding some switching elements, the benefits of biased inductors can also be used in AC applications. This paper presents a review of the scientific literature on biased hybrid inductors and the evolution of the used magnets and cores configurations. A recently developed biasing configuration, the saturation-gap, will also be analyzed and the design parameter will be identified using finite element software. The simulation results will be compared with empirical laboratory measurements on physical units.
{"title":"Design, analysis and simulation of magnetic biased inductors with saturation-gap","authors":"A. Aguilar, S. Munk‐Nielsen","doi":"10.1109/EPE.2014.6910896","DOIUrl":"https://doi.org/10.1109/EPE.2014.6910896","url":null,"abstract":"Permanent magnet biasing, is a known technique for increasing the energy storage capability of inductors operating in DC applications. The opposing flux introduced by a permanent magnet will extend the saturation flux limit of a given magnetic material. When full biasing of the core is achieved, the effective saturation current limit of a given inductor is doubled. This results in a smaller requirement in number of turns and area cross-section, allowing for smaller and/or more efficient inductors. By adding some switching elements, the benefits of biased inductors can also be used in AC applications. This paper presents a review of the scientific literature on biased hybrid inductors and the evolution of the used magnets and cores configurations. A recently developed biasing configuration, the saturation-gap, will also be analyzed and the design parameter will be identified using finite element software. The simulation results will be compared with empirical laboratory measurements on physical units.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"2009 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86264467","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 : 2014-09-29DOI: 10.1109/EPE.2014.6911002
Gyeong-Chan Lee, S. Kam, T. Jung
Cogging torque is important factor of a permanent magnet generator because cogging torque affects cut-in wind speed and produces torque ripple, mechanical vibration and noise on wind turbine. In this paper, the design for cogging torque reduction and low torque ripple of outer rotor radial flux permanent magnet generator has been proposed. To reduce cogging torque and torque ripple, pole arc ratio and permanent magnet structure was designed.
{"title":"Design on permanent magnet structure of radial flux permanent magnet generator for cogging torque reduction and low torque ripple","authors":"Gyeong-Chan Lee, S. Kam, T. Jung","doi":"10.1109/EPE.2014.6911002","DOIUrl":"https://doi.org/10.1109/EPE.2014.6911002","url":null,"abstract":"Cogging torque is important factor of a permanent magnet generator because cogging torque affects cut-in wind speed and produces torque ripple, mechanical vibration and noise on wind turbine. In this paper, the design for cogging torque reduction and low torque ripple of outer rotor radial flux permanent magnet generator has been proposed. To reduce cogging torque and torque ripple, pole arc ratio and permanent magnet structure was designed.","PeriodicalId":6508,"journal":{"name":"2014 16th European Conference on Power Electronics and Applications","volume":"11 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87705906","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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