T. Ishrat, G. Ledwich, M. Vilathgamuwa, P. Borghesani
{"title":"Identification scheme of maximum traction force using recursive least square for traction control in electric locomotives","authors":"T. Ishrat, G. Ledwich, M. Vilathgamuwa, P. Borghesani","doi":"10.1109/PEDS.2017.8289141","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289141","url":null,"abstract":"The railway traction system that incorporates a slip controller provides a significant improvement in the adhesion between rail and train which can lead to increase in the traction force and wheel slip controllability. Due to the change of rail track and running speed, both slip and operating traction force keep changing. Therefore, there is a requirement of reliable identification of wheel-rail contact force properties and adhesion level for acceleration or braking controls to adapt to different track conditions. Since wheel slip controller shows many applications in the aspect of safety relevant features, such as slip control, emergency brake assistance, locomotive operation, etc. the proper estimation of traction force and the detection of maximum traction force between rail and wheels are very important factors in the railway industry. Furthermore, an advanced scheme with traction drive control is required to achieve the maximum adhesion level for a railway vehicle. This paper proposes a new identification technique scheme which is designed to regulate the torque reference according to the maximum traction force. The proposed scheme is built with Recursive Least Square (RLS) scheme to identify the peak slip level at maximum traction force with the searching technique based on the traction force estimated by a Kalman Filter. Furthermore, this scheme is also used to operate the traction system within the identified maximum traction force region. Simulation model validates that the proposed controller with identification scheme can control the train or locomotive to obtain its maximum adhesion force.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130412880","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":"Specify the matching of motor drive and electric machine in prime mover emulators","authors":"Ruiyun Fu","doi":"10.1109/PEDS.2017.8289173","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289173","url":null,"abstract":"In either a hardware-in-the-loop (HIL) testbed of power system or a testing of an experimental machine such as a new electric generator, it would be necessary to substitute a surrogate mechanical power source for a prime mover that is not available or inapplicable onsite. In order to meet this need, the behavior of the prime mover can be emulated by an electric machine energized and controlled by a power electronic motor drive. The prime mover can be various mechanical power sources such as gas turbine, diesel engine and wind turbine, etc. In this research, we focus on using controlled alternative-current (AC) electric machines, i. e. induction machines and synchronous machines, to emulate prime movers. Based on linearization and power balance, an equation is derived to specify the matching of motor drive and electric machine in prime mover emulators (PMEs). This equation helps the selection of a motor drive and an electric machine in appropriate pair for a prime mover to be emulated. It also helps the design of test items for PMEs. The effectiveness of the matching equation has been verified by simulation tests in Matlab/Simulink.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127991544","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}
Eduard Specht, Christian Korte, Marc Hillei, S. Goetz
{"title":"Spectral synthesis of switching distortion in multilevel converters","authors":"Eduard Specht, Christian Korte, Marc Hillei, S. Goetz","doi":"10.1109/PEDS.2017.8289243","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289243","url":null,"abstract":"We present a novel modulation method for selective reduction of peaks and practically free control of the output spectrum. In contrast to conventional pulse-width modulation (PWM), the model-predictive approach controls the output spectrum directly in the frequency domain to obtain the desired shape. Specified frequency bands can be kept free from spectral distortion to minimize electromagnetic interference (EMI). For equal switching frequencies, our method shows reduction of the peak switching distortion power density by >24 dB, while even narrow-band spectral gaps with −74.8 dB were achieved. In addition, the demonstrated method takes into account switching to trade-off switching loss with the spectral control to reduce loss by 37% with moderate impact on the spectrum.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131126726","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":"Modeling of dual-active soft-switching converter for MTEM transmitter","authors":"Wang Xuhong, Zhang Yiming, Gao Junxia","doi":"10.1109/PEDS.2017.8289160","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289160","url":null,"abstract":"Multi-channel transient electromagnetic (MTEM) is an artificial source electromagnetic detection method, the transmitter injects the high-power pseudo-random binary sequence (PRBS) signals with different coding frequencies into the earth to obtain the geological structure and the mineral resources. However, the current transmitters have many problems, such as small power-density, low efficiency, and poor quality output signals. A novel dual-active soft-switching converter can significantly reduce the circuit loss and achieve stable output from nearly zero to full load. Because of the proposed converter containing 18 operating modes in a duty cycle, it cannot be directly modeled. Based on the model of the full-bridge hard-switching converter, the steady-state and low-frequency small-signal model of the proposed converter is established by analyzing the influences of resonant inductance, input voltage and output current fluctuations on the effective duty cycle. Finally, the simulation and experimental results verify the validity of the model, and a 50kW principle prototype is implemented.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131286139","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}
F. Tinazzi, P. Sandulescu, L. Peretti, M. Zigliotto
{"title":"On the true maximum efficiency operations of synchronous motor drives","authors":"F. Tinazzi, P. Sandulescu, L. Peretti, M. Zigliotto","doi":"10.1109/PEDS.2017.8289154","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289154","url":null,"abstract":"Energy efficient AC drives for synchronous machines are key components in modern mechatronic systems, including applications of renewable energy and transportation. It is possible that the next generation of synchronous motors may be of the reluctance-prevalent type, due to the ecological footprint and cost of permanent magnet materials. When a reluctance torque is available, the torque is usually regulated according to the maximum torque per ampere principle which minimises the copper losses for a given torque request. However, iron and additional losses also contribute to the total machine losses, although their influence on the best current vector trajectory for total loss minimisation is not clear yet. The aim of this paper is to discuss and quantitatively evaluate the effect of iron and additional losses on the efficiency of different synchronous machines, looking for the true maximum efficiency. An extended batch of measurements performed on different types of machines with low power rating are discussed in detail.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132721944","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}
Majdi M. Ababneh, Kavyashree P A. Qaroot, Samuel Perez, Sylvia W. Thomas, Y. Tan
{"title":"Optimized power management circuit for implantable rectenna for in-body medical devices","authors":"Majdi M. Ababneh, Kavyashree P A. Qaroot, Samuel Perez, Sylvia W. Thomas, Y. Tan","doi":"10.1109/PEDS.2017.8289112","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289112","url":null,"abstract":"For many years, RF wireless harvesting systems have been investigated, but only a few of RF sources have been able to generate sufficient energy that can be used as feasible source for implantable medical devices like implantable rectenna, it could provide unlimited energy for the lifespan of implanted devices. In order to harvest the maximum power from implanted rectenna, power management system is needed. However, most of power management systems are not efficient due to power consumption in control circuitry. This paper presents a fabricated rectenna with 63% power efficiency and an optimized power management circuit to improve the efficiency of DC-DC converter, where the rectenna is used as power source, this is accomplished by using particle swarm optimization technique. This design improves the efficiency of optimized power management circuit by 10% comparing with conventional power management circuits over a wide range of input power, allowing harvesting more power from rectenna and delivering it to medical device; it can extend the battery life of implantable medical devices.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132814142","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}
H. Jia, Jiajun Luo, Jun Cai, Z. Jia, Yongjuan Cao, M. Cheng
{"title":"Optimization design and analysis of a bearingless flux-switching permanent magnet machine","authors":"H. Jia, Jiajun Luo, Jun Cai, Z. Jia, Yongjuan Cao, M. Cheng","doi":"10.1109/PEDS.2017.8289238","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289238","url":null,"abstract":"To solve the thermal and mechanical integrity problems in a traditional rotor permanent-magnet (PM) bearingless machine having magnets on the rotor, this paper investigates a three-phase 12/10 poles bearingless flux-switching permanent magnet machine (BFSPMM) with suspending windings, armature windings and PMs on the stator. The basic structure and the operating principle are introduced. The finite element method (FEM) is used for parameters optimization. The influence of the design parameters, such as rotor tooth width, the stator tooth width, PM magnetization thickness, and gap on the machine performance is investigated. The analysis results show that the electromagnetic torque and suspension forces have been significantly increased with the optimized parameters.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132912265","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":"The optimum design of the magnetic orientation of permanent magnets for IPMSM under hot environments","authors":"N. Nishiyama, Hiroki Uemura, Y. Honda","doi":"10.1109/PEDS.2017.8289239","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289239","url":null,"abstract":"In this study, we investigate the optimum design for improving the demagnetization resistance of a concentrated winding permanent magnet synchronous motor (IPMSM) by changing the magnetization direction of the permanent magnet under a high-temperature environment. IPMSMs (flat plate type, V-shaped type, spoke type) are investigated by finite element analysis (FEA) using the same volume of the permanent magnet while changing the magnet's width, and thickness and magnetic field orientation angle. FEA found that a V angle of 130° and a changed magnet length of 107% (or V angle of 100° and a changed magnet length of 97%) using an oblique magnetic-field-oriented magnet strike a good balance between demagnetization resistance and torque at 180°C. In the V-shaped arrangement, for a motor with the same magnet length, the demagnetization resistance at a magnetic field orientation angle α = 20° is better than that at α = 0°. The magnetic field orientation angle α = 20° has a magnetic flux density distribution closer to a sinusoidal wave form than α = 0° and is thus effective for reducing torque ripple.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"9 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134293780","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}
Febry Pandu Wijaya, Hiroyasu Kobayashi, K. Kondo, T. Iwasaki, Akihiro Tsumura
{"title":"Damping control method of regenerative brake control under light load condition utilizing over voltage resistor","authors":"Febry Pandu Wijaya, Hiroyasu Kobayashi, K. Kondo, T. Iwasaki, Akihiro Tsumura","doi":"10.1109/PEDS.2017.8289200","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289200","url":null,"abstract":"Higher DC-link voltage of the regenerating train under light-load regenerative brake control increases the regenerative brake power. However, if the regenerating load changes suddenly, the delay in the motor current control causes the filter capacitor (FC) voltage of the traction inverter increases and may activate the over voltage protection. This paper proposes a damping control method to reduce the peak of FC voltage using the over voltage resistor (OVRe). The proposed method is verified by numerical simulation assuming an actual railway vehicle under the condition of load shutdown at the highest power region, as the worst case conditions. By means of this method, the OVRe can be effectively utilized to reduce the FC voltage spike that results in more saving the substation energy.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131692192","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}
Yang Li, D. M. Vilathgamuwa, S. Choi, T. Farrell, N. Tran, Joseph Teague
{"title":"Optimal control of film growth in dual lithium-ion battery energy storage system","authors":"Yang Li, D. M. Vilathgamuwa, S. Choi, T. Farrell, N. Tran, Joseph Teague","doi":"10.1109/PEDS.2017.8289208","DOIUrl":"https://doi.org/10.1109/PEDS.2017.8289208","url":null,"abstract":"This paper examines a charging/discharging scheme for Li-ion battery energy storage system used in renewable generation systems, with the view to minimize the growth of the solid-electrolyte interphase film and to prolong the battery life. A suitable reduced-order equivalent circuit model of the lithium-ion battery is developed based on electrochemistry. The model is used in the design of the battery power flow control scheme. By solving an optimization problem using dynamic programming algorithm, a computationally-efficient heuristic control strategy is further developed in accordance with the result of the optimization. The proposed new strategy is then compared with conventional dual-battery charging method to demonstrate the use of the proposed scheme can indeed extend the battery lifetime.","PeriodicalId":411916,"journal":{"name":"2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116909181","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}