Pub Date : 2003-06-15DOI: 10.1109/PESC.2003.1217739
A. Monti, K. Patel, D. Patterson, R. Dougal
This paper describes an approach to a modular control for an electromagnetic aircraft launching system (EMALS) for the aircraft carrier of the future. The purpose is to analyze the possibility of improving the control performance using efficient evaluation of switching conditions. Different options for the basic control design are discussed and as well as the way in which these options will be tested using the virtual test bed (VTB) software.
{"title":"Modular control for electromagnetic aircraft launching system","authors":"A. Monti, K. Patel, D. Patterson, R. Dougal","doi":"10.1109/PESC.2003.1217739","DOIUrl":"https://doi.org/10.1109/PESC.2003.1217739","url":null,"abstract":"This paper describes an approach to a modular control for an electromagnetic aircraft launching system (EMALS) for the aircraft carrier of the future. The purpose is to analyze the possibility of improving the control performance using efficient evaluation of switching conditions. Different options for the basic control design are discussed and as well as the way in which these options will be tested using the virtual test bed (VTB) software.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130085130","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218317
Li Cai, Yinhai Zhang, Zhongchao Zhang, Chenyang Liu, Zheng-yu Lu
Genetic algorithm (GA) is applied in this paper to optimize parameters of the extended Kalman filter (EKF) in a speed-senserless field-oriented controller (FOC) system. The main parameters of EKF are the covariance matrics Q and R, which are bound respectively to the state and measurement noises. As for speed-sensorless FOC system, the convergence and precision of both rotor speed and flux estimation depend on the accuracy of the models of system noise and measurement noise, i.e. Q and R. A GA training simulation system of optimum parameters of EKF is given and the simulation results show the efficiency and rationality of the algorithm.
{"title":"Application of genetic algorithms in EKF for speed estimation of an induction motor","authors":"Li Cai, Yinhai Zhang, Zhongchao Zhang, Chenyang Liu, Zheng-yu Lu","doi":"10.1109/PESC.2003.1218317","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218317","url":null,"abstract":"Genetic algorithm (GA) is applied in this paper to optimize parameters of the extended Kalman filter (EKF) in a speed-senserless field-oriented controller (FOC) system. The main parameters of EKF are the covariance matrics Q and R, which are bound respectively to the state and measurement noises. As for speed-sensorless FOC system, the convergence and precision of both rotor speed and flux estimation depend on the accuracy of the models of system noise and measurement noise, i.e. Q and R. A GA training simulation system of optimum parameters of EKF is given and the simulation results show the efficiency and rationality of the algorithm.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130569222","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218295
M. Carmeli, F. Castelli-Dezza, G. Superb-Furga
The present paper proposes an improved modulation algorithm for current controlled voltage source converters. Its features are fixed switching frequency and precalculated commutation instants, allowing an accurate phase shift of the current ripple during a parallel connection of converters. Moreover it is characterised by the same features of classical hysteresis control in terms of good dynamic performance, good accuracy and simple control technique. Assuming flux linkages as control variables, insensitivity to possible inductance nonlinearity and inductive coupling is achieved. Therefore, the new approach allows to consider an inductive coupling set, with improvements in multiconverter performances. The new approach has been validated and tested both by numerical simulation and experimental set up.
{"title":"Constant frequency current modulation algorithm based on linkage flux","authors":"M. Carmeli, F. Castelli-Dezza, G. Superb-Furga","doi":"10.1109/PESC.2003.1218295","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218295","url":null,"abstract":"The present paper proposes an improved modulation algorithm for current controlled voltage source converters. Its features are fixed switching frequency and precalculated commutation instants, allowing an accurate phase shift of the current ripple during a parallel connection of converters. Moreover it is characterised by the same features of classical hysteresis control in terms of good dynamic performance, good accuracy and simple control technique. Assuming flux linkages as control variables, insensitivity to possible inductance nonlinearity and inductive coupling is achieved. Therefore, the new approach allows to consider an inductive coupling set, with improvements in multiconverter performances. The new approach has been validated and tested both by numerical simulation and experimental set up.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132876423","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 : 2003-06-15DOI: 10.1109/PESC.2003.1216612
T. Senanayake, T. Ninomiya, H. Tohya
The lower output voltage, higher output current and smaller output voltage ripple requirements have greatly increased the difficulty of the power supply design. To further burden the problem, power saving "stop-clock" modes of the microprocessor has demanded faster and more stable transient response from the DC-DC converter. In this paper a new fast-response DC-DC converter design is presented that will meet the requirements and features of the new generation of microprocessors and digital systems. A novel method of reactance switching is applied to a DC-DC converter, and it provides the prominent features of current amplification and absorption. It produces a high slew rate of load current and keeps output voltage constant in case of severe load changes. The design and simulation of the concept is verified by experiment of 12 V input and 3.3 V/30 A output. Further improvement of transient response is obtained by replacing the output capacitor with a low impedance line component (LILC).
{"title":"Fast-response load regulation of DC-DC converter by means of reactance switching","authors":"T. Senanayake, T. Ninomiya, H. Tohya","doi":"10.1109/PESC.2003.1216612","DOIUrl":"https://doi.org/10.1109/PESC.2003.1216612","url":null,"abstract":"The lower output voltage, higher output current and smaller output voltage ripple requirements have greatly increased the difficulty of the power supply design. To further burden the problem, power saving \"stop-clock\" modes of the microprocessor has demanded faster and more stable transient response from the DC-DC converter. In this paper a new fast-response DC-DC converter design is presented that will meet the requirements and features of the new generation of microprocessors and digital systems. A novel method of reactance switching is applied to a DC-DC converter, and it provides the prominent features of current amplification and absorption. It produces a high slew rate of load current and keeps output voltage constant in case of severe load changes. The design and simulation of the concept is verified by experiment of 12 V input and 3.3 V/30 A output. Further improvement of transient response is obtained by replacing the output capacitor with a low impedance line component (LILC).","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132963554","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 : 2003-06-15DOI: 10.1109/PESC.2003.1216793
J. Guerrero, L. de Vicuna, J. Matas, J. Miret, M. Castilla
In this paper, a new control scheme for parallel-connected inverters without communication wires is presented. This wireless control technique is based on the well-known droop method, which consists of introducing P-/spl omega/ and Q-V schemes into the inverters, in order to share properly the power drawn to the loads. In the literature, the droop method has been widely discussed in applications of load sharing between different parallel-connected UPS inverters. However, there are little reports about its transient performance. Some previous works present a small signal stability analysis for parallel-connected inverter system. Nevertheless, by using the conventional droop approach, there is no possibility to modify the transient response without the loss of power sharing precision or output-voltage and frequency accuracy. In this work, a great improvement in transient response is achieved by introducing power derivative-integral terms into a conventional droop scheme. Hence, better controllability of the system is obtained and, consequently, proper transient performance can be achieved. Simulation and experimental results are presented to prove the validity of this approach, which shows excellent performance in front of conventional one.
{"title":"A wireless load sharing controller to improve dynamic performance of parallel-connected UPS inverters","authors":"J. Guerrero, L. de Vicuna, J. Matas, J. Miret, M. Castilla","doi":"10.1109/PESC.2003.1216793","DOIUrl":"https://doi.org/10.1109/PESC.2003.1216793","url":null,"abstract":"In this paper, a new control scheme for parallel-connected inverters without communication wires is presented. This wireless control technique is based on the well-known droop method, which consists of introducing P-/spl omega/ and Q-V schemes into the inverters, in order to share properly the power drawn to the loads. In the literature, the droop method has been widely discussed in applications of load sharing between different parallel-connected UPS inverters. However, there are little reports about its transient performance. Some previous works present a small signal stability analysis for parallel-connected inverter system. Nevertheless, by using the conventional droop approach, there is no possibility to modify the transient response without the loss of power sharing precision or output-voltage and frequency accuracy. In this work, a great improvement in transient response is achieved by introducing power derivative-integral terms into a conventional droop scheme. Hence, better controllability of the system is obtained and, consequently, proper transient performance can be achieved. Simulation and experimental results are presented to prove the validity of this approach, which shows excellent performance in front of conventional one.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"125 17","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131943002","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 : 2003-06-15DOI: 10.1109/PESC.2003.1216790
J. Guo
Small duty cycle, short on-time, and high switching loss are the ultimate limit for high performance nonisolated DC/DC converter designs and applications. This paper introduces a HV input high frequency nonisolated DC/DC converter that can effectively correct all of the above mentioned problems. Significantly reduced MOSFET switching and conduction losses enable high frequency operation without thermal penalty of the power semiconductor devices. Since duty cycle can be extended and programmed in this topology, true ripple cancellation in multiphase configurations is achievable.
{"title":"A HV input high frequency nonisolated DC/DC converter","authors":"J. Guo","doi":"10.1109/PESC.2003.1216790","DOIUrl":"https://doi.org/10.1109/PESC.2003.1216790","url":null,"abstract":"Small duty cycle, short on-time, and high switching loss are the ultimate limit for high performance nonisolated DC/DC converter designs and applications. This paper introduces a HV input high frequency nonisolated DC/DC converter that can effectively correct all of the above mentioned problems. Significantly reduced MOSFET switching and conduction losses enable high frequency operation without thermal penalty of the power semiconductor devices. Since duty cycle can be extended and programmed in this topology, true ripple cancellation in multiphase configurations is achievable.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132182040","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218181
D. He, R. Nelms
In a current-mode control (CMC) system, the inductor current has a fundamental frequency equal to the switching frequency that far exceeds the maximum sampling rate of most microcontroller A/D converters. In order to demonstrate the feasibility of a microcontroller-based CMC DC-DC converter, a peak current controller for a boost converter operating in the continuous conduction mode has been designed and implemented using a PIC16C782 microcontroller. Practical issues in designing a digital CMC converter are briefly discussed. Experimental results are presented, and encouragingly demonstrate the performance that a microcontroller-based CMC DC-DC converter can achieve. The digital controller has been compared to an analog controller based on a UC3842.
{"title":"Peak current-mode control for a boost converter using an 8-bit microcontroller","authors":"D. He, R. Nelms","doi":"10.1109/PESC.2003.1218181","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218181","url":null,"abstract":"In a current-mode control (CMC) system, the inductor current has a fundamental frequency equal to the switching frequency that far exceeds the maximum sampling rate of most microcontroller A/D converters. In order to demonstrate the feasibility of a microcontroller-based CMC DC-DC converter, a peak current controller for a boost converter operating in the continuous conduction mode has been designed and implemented using a PIC16C782 microcontroller. Practical issues in designing a digital CMC converter are briefly discussed. Experimental results are presented, and encouragingly demonstrate the performance that a microcontroller-based CMC DC-DC converter can achieve. The digital controller has been compared to an analog controller based on a UC3842.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132308100","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 : 2003-06-15DOI: 10.1109/PESC.2003.1216788
S. Chakraborty, A. Jain, N. Mohan
This paper presents a novel power distribution system for supplying multiple individually regulated outputs from a central power supply acting as a controlled current source that contains all the magnetic components. The individual output voltages are filtered by means of capacitors. The current source is realized with a buck converter. The outputs are connected to the current source on a time-shared basis and regulated individually by constant frequency PWM. The buck converter is controlled using average current control. Simulation results and experimental results from a laboratory prototype are presented.
{"title":"A novel power distribution system using a central buck-based current source for multiple individually regulated outputs","authors":"S. Chakraborty, A. Jain, N. Mohan","doi":"10.1109/PESC.2003.1216788","DOIUrl":"https://doi.org/10.1109/PESC.2003.1216788","url":null,"abstract":"This paper presents a novel power distribution system for supplying multiple individually regulated outputs from a central power supply acting as a controlled current source that contains all the magnetic components. The individual output voltages are filtered by means of capacitors. The current source is realized with a buck converter. The outputs are connected to the current source on a time-shared basis and regulated individually by constant frequency PWM. The buck converter is controlled using average current control. Simulation results and experimental results from a laboratory prototype are presented.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131310289","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218279
Li Jun, K. Cheng, Dehong Xu, D. Sutanto
A multi-modular current-source based hybrid converter mainly designed for superconducting magnetic energy storage system (SMES) is investigated in this paper. The converter consists of a four-module current source converter and one module of voltage source converter to reach high power rate and low harmonics. Circuit topology, control method and simulation results are given.
{"title":"Multi-modular current-source based hybrid converter for SMES","authors":"Li Jun, K. Cheng, Dehong Xu, D. Sutanto","doi":"10.1109/PESC.2003.1218279","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218279","url":null,"abstract":"A multi-modular current-source based hybrid converter mainly designed for superconducting magnetic energy storage system (SMES) is investigated in this paper. The converter consists of a four-module current source converter and one module of voltage source converter to reach high power rate and low harmonics. Circuit topology, control method and simulation results are given.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131674880","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 : 2003-06-15DOI: 10.1109/PESC.2003.1218185
C. V. Schimpfle, J. Kirchner
A new area efficient approach for regulating the output of boost converters even when the input voltage exceeds the output voltage is presented. Down conversion is achieved without using an LDO and does not require an additional inductor coil and capacitor like the SEPIC or other noninverting buck-boost converters. The concept is based on a back-gate control of the PMOS type synchronous rectifier to avoid forward biasing of the substrate diode when the circuit is operating in the so-called down mode. The converter is implemented in a 10 pin MSOP package and requires only one external inductor and capacitor. The output voltage can be regulated between 1.8 V and 5.5 V for output currents up to 200 mA. When working in continuous boost mode, the efficiency is above 85% and goes up to 95%. In down mode efficiency is typical between 55% and 75%. An optional power save or power save mode is implemented to increase efficiency for light loads.
{"title":"A step-down conversion concept for a PWM-mode boost converter","authors":"C. V. Schimpfle, J. Kirchner","doi":"10.1109/PESC.2003.1218185","DOIUrl":"https://doi.org/10.1109/PESC.2003.1218185","url":null,"abstract":"A new area efficient approach for regulating the output of boost converters even when the input voltage exceeds the output voltage is presented. Down conversion is achieved without using an LDO and does not require an additional inductor coil and capacitor like the SEPIC or other noninverting buck-boost converters. The concept is based on a back-gate control of the PMOS type synchronous rectifier to avoid forward biasing of the substrate diode when the circuit is operating in the so-called down mode. The converter is implemented in a 10 pin MSOP package and requires only one external inductor and capacitor. The output voltage can be regulated between 1.8 V and 5.5 V for output currents up to 200 mA. When working in continuous boost mode, the efficiency is above 85% and goes up to 95%. In down mode efficiency is typical between 55% and 75%. An optional power save or power save mode is implemented to increase efficiency for light loads.","PeriodicalId":236199,"journal":{"name":"IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128839338","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：