{"title":"Small-signal analysis of DC-DC converters with sliding mode control","authors":"P. Mattavelli, L. Rossetto, G. Spiazzi","doi":"10.1109/APEC.1995.469014","DOIUrl":"https://doi.org/10.1109/APEC.1995.469014","url":null,"abstract":"The paper deals with small-signal analysis of DC-DC power converters with sliding mode control. A suitable small-signal model is developed, which allows selection of control coefficients, analysis of parameter variation effects and characterization of the closed-loop behavior in terms of audiosusceptibility, output and input impedances and reference-to-output transfer function. Unlike previous analyses, the model includes effects of the filters used to evaluate state variable errors. Simulated and experimental results demonstrate model potentialities.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132739630","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":"Implementation of a high-performance induction motor drive using a three-phase inverter module, a PWM ASIC and a DSP","authors":"Liyong Chen, J. Balda, K. Olejniczak","doi":"10.1109/APEC.1995.469023","DOIUrl":"https://doi.org/10.1109/APEC.1995.469023","url":null,"abstract":"This paper presents the hardware implementation of an indirect field-oriented-controlled induction motor drive using an application specific integrated circuit (ASIC), the 40 MHz TMS320C25 digital signal processor (DSP) and a three-phase inverter power module. The main purposes of this implementation are (a) to redistribute low-level control decisions to other on-board subsystems in order to better utilize the system computational resources, and (b) to simplify the design of the inverter stage and its associated controller. The use of an ASIC performing the PWM function relieves the DSP from this task allowing for greater system flexibility and increased computation time for more sophisticated control algorithms. The use of power modules offers simpler system design, greater fault tolerance (leading to higher system reliability), and a reduced system footprint due to a compact \"building block\" design hierarchy which reduces part count, mass, and volume. The system architecture and detailed schematics are presented. Experimental results illustrate the feasibility of the proposed ideas when the designed drive is controlling the speed of a 2 HP induction motor using a model-reference adaptive speed controller.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"314 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131670705","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":"A new topology for high voltage, high frequency transformers","authors":"M. Pérez, C. Blanco, M. Rico, F. Linera","doi":"10.1109/APEC.1995.469076","DOIUrl":"https://doi.org/10.1109/APEC.1995.469076","url":null,"abstract":"When a DC high voltage needs to be obtained from low voltage inputs (mains voltage), the necessary power converter needs a high value for its transformation ratio; consequently, a large number of turns is often necessary for secondary windings and some parasitics appear (large leakage inductance and large capacitance). Thus, it is usual to design a resonant converter to include both inductance and capacitance in the power topology. However, as the parasitics are used to obtain the resonance, their value (and their spreads) are critical. The paper proposes several criteria in order to establish an adequate method for constructing the transformer, and a new topology for transformers and a model for parasitic capacitances are also presented taking into account high voltage and high frequency problems and limitations of materials.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132149004","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":"Optimization of the auxiliary switch components in a flying capacitor ZVS PWM converters","authors":"S. Ben-Yaakov, G. Ivensky, O. Levitin, A. Treiner","doi":"10.1109/APEC.1995.468994","DOIUrl":"https://doi.org/10.1109/APEC.1995.468994","url":null,"abstract":"A family of PWM converters with an Auxiliary Switch Assisted Soft Switcher (AASS) is studied. The basic AASS cell includes an inductor connected in series with the auxiliary switch of the converter, a capacitor connected in parallel with the main switch diode or main diode of the converter and an additional capacitor (designated a 'flying' capacitor) connected through an auxiliary diode parallel to the inductor and through an extra auxiliary diode parallel to the main diode of the converter. The unified analysis of steady-state processes in a generalized AASS converter, carried out in this investigation, is applicable to various PWM topologies. A design procedure for optimization of AASS parameters is developed. Experimental investigation (a boost DC-DC converter 130/380 V, 1.1 kW, switching frequency 100...160 kHz) confirmed the results of the theoretical analysis.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133198029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Korotkov, V. Meleshin, A. Nemchinov, S. Fraidlin
{"title":"Small-signal modeling of soft-switched asymmetrical half-bridge DC/DC converter","authors":"S. Korotkov, V. Meleshin, A. Nemchinov, S. Fraidlin","doi":"10.1109/APEC.1995.469097","DOIUrl":"https://doi.org/10.1109/APEC.1995.469097","url":null,"abstract":"A small-signal model of soft-switched asymmetrical half-bridge DC/DC converter operating in a continuous inductor conduction mode is proposed. The analysis of this model is applicable to converters with any type of output rectifier (full-wave or half-wave). Based on the proposed model, the feedback compensation network for a prototype converter was designed. An open loop frequency response and voltage ripple attenuation of the converter with closed feedback loop were calculated. The experimental results validated all theoretical predictions.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133214525","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":"A novel grid interface for photovoltaic, wind-electric, and fuel-cell systems with a controllable power factor of operation","authors":"R. Naik, N. Mohan","doi":"10.1109/APEC.1995.469062","DOIUrl":"https://doi.org/10.1109/APEC.1995.469062","url":null,"abstract":"This paper presents a novel control for a grid interface, for interconnection of renewable energy sources with a three-phase utility, with a controllable power factor of operation. The total harmonic distortion in the line currents meets the 5% limit recommended by the IEEE 519-1992. The novel control strategy for operating the interface at unity or even slightly leading power factor is described and the simulation results are presented. The grid interface described is based on a novel topology for transferring power from the DC side to the three-phase AC system. It consists of a thyristor inverter where the firing angle can be kept at a constant value. The power flow from the DC source to the utility is controlled by two stepdown DC-DC converters.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132648415","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":"A technique for the reduction of harmonic distortion and power losses in advanced static VAr compensators","authors":"Zhe Chen, S. B. Tennakoon","doi":"10.1109/APEC.1995.469085","DOIUrl":"https://doi.org/10.1109/APEC.1995.469085","url":null,"abstract":"The harmonic reduction technique presented is suitable for the application to advanced static VAr compensators (ASVC). The technique is combined with a soft switching strategy to reduce the low order harmonics and the switching losses. The theoretical basis is established and the effectiveness of the method is investigated by simulation and experiment. Both hard switched and soft switched ASVCs are considered. Theoretical and experimental results show good agreement.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131149470","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":"Designing HVPS electronic modules for manufacturability","authors":"J. Bowers","doi":"10.1109/APEC.1995.469000","DOIUrl":"https://doi.org/10.1109/APEC.1995.469000","url":null,"abstract":"High voltage power supplies (HVPS) that are designed, developed, and manufactured for aerospace, commercial, industrial, and military applications require the use of highly reliable components. In many (if not all) designs, the high voltage circuits or networks that include these components can be assembled into highly reliable high voltage electronic modules. The use of concurrent engineering methods, quality function deployment (QFD), design of experiments (DOE), and design for manufacturing and assembly (DFMA) can result in a modular approach which can improve the manufacturability of the modules and reduce the apparent (and at times the real number) of components present in the high voltage power supplies. A modular versus a monolithic design can have several advantages: potential reductions in engineering documentation; potential reductions in inventory requirements; more efficient manufacturing (assembly, rework, repair, etc.); more efficient testing and verification procedures (fewer items, integrated evaluations, etc.); potential reliability and on-line improvements; and potential cost reductions. The author discusses the product development tools and the design criteria.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115193720","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":"ID-Model control of a synchronous motor without position and speed sensor","authors":"C. Bruguier, G. Champenois, J. Rognon","doi":"10.1109/APEC.1995.468977","DOIUrl":"https://doi.org/10.1109/APEC.1995.468977","url":null,"abstract":"Generally, a synchronous motor requires position and speed sensors for control. The resolver, used as a position sensor together with a resolver-to-digital converter, increases the cost and size and minimizes the reliability of the drive. This paper presents a new position and speed sensorless control scheme of the motor based on stator current measurements: the ID-Model. Two approaches of the ID-Model's controller are presented and compared with the performances obtained with a resolver.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115432227","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":"Digital control of a ZVS full-bridge DC-DC converter","authors":"P.F. Kocybik, K. N. Bateson","doi":"10.1109/APEC.1995.469094","DOIUrl":"https://doi.org/10.1109/APEC.1995.469094","url":null,"abstract":"The paper describes the design and realization of a digital controller for a DC-DC power converter with zero-voltage switching (ZVS). The chosen power converter, usually called the phase-shifted bridge, is valuable because it combines advantages from both conventional PWM and resonant-mode power converters. It is therefore an important topology for investigating the advantages of digital control for DC-DC power converters. The power converter's control equations are nonlinear. The paper explains how the digital technique simplifies the separation of large-signal and small-signal control of the power converter. The loop updates at 25 kHz, and experimental results show the dynamic response achieved.<<ETX>>","PeriodicalId":335367,"journal":{"name":"Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1995-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115905316","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}