Pub Date : 2000-12-04DOI: 10.1109/ISIE.2000.930533
C. Brañas, F. Azcondo, S. Bracho
This paper proposes a design method for a class D series-parallel (LC/sub s/C/sub p/) resonant inverter suitable to drive high-intensity discharge lamps. The high voltage needed to achieve the ignition of the lamp is reached by using the gain voltage of the resonant LC/sub s/C/sub p/ network with no auxiliary circuits for this purpose. By means of a soft start-up sequence the maximum voltage and current stress are maintained below prefixed values. In steady state, the operation point is calculated to limit the maximum power that the inverter delivers to the lamp. In this way, the variation of the lamp power caused by the lamp aging is limited in order to fulfil the standard. This design results in cost-effective circuits, simplifying the DC/AC power stage of an electronic ballast. The experimental results are given for two similar 100 W high-pressure sodium lamps with different aging.
{"title":"Class d LC/sub s/C/sub p/ series-parallel resonant inverter with inherent maximum output power suitable for driving HPS lamps","authors":"C. Brañas, F. Azcondo, S. Bracho","doi":"10.1109/ISIE.2000.930533","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930533","url":null,"abstract":"This paper proposes a design method for a class D series-parallel (LC/sub s/C/sub p/) resonant inverter suitable to drive high-intensity discharge lamps. The high voltage needed to achieve the ignition of the lamp is reached by using the gain voltage of the resonant LC/sub s/C/sub p/ network with no auxiliary circuits for this purpose. By means of a soft start-up sequence the maximum voltage and current stress are maintained below prefixed values. In steady state, the operation point is calculated to limit the maximum power that the inverter delivers to the lamp. In this way, the variation of the lamp power caused by the lamp aging is limited in order to fulfil the standard. This design results in cost-effective circuits, simplifying the DC/AC power stage of an electronic ballast. The experimental results are given for two similar 100 W high-pressure sodium lamps with different aging.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123936378","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930388
J. Paz, R. Moreno, V. Sotelo
This paper deals with the design, simulation and implementation of a digital signal processor (DSP)- based speed controller. The method applied is known as "integral variable structure model following control "(IVSMF)": which takes the error between the state of the model and the controlled plant, this error is to be minimized using the boundaries defined in the sliding mode plane. The control has been used to drive two types of permanent magnet motors, a PMDC motor and brushless AC motor, obtaining accurate speed regulation in both cases. The implementation is developed using two DSP's sharing a common memory, one is dedicated to implement the control algorithm and the other is devote to control the current controlled inverter (PWM), process the speed and current signals coming from the Hall effect current sensors and the position encoder. The control algorithm used is such if considers the variations from plant parameters, considering those parameters can have variations due to different factors such as core manufacture temperature, friction, etc. The results obtained show the robustness and the reliability of the controller when used with both the DC motor and the AC brushless motor.
{"title":"DSP-based integral variable structure control for permanent magnet AC and DC motor drivers","authors":"J. Paz, R. Moreno, V. Sotelo","doi":"10.1109/ISIE.2000.930388","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930388","url":null,"abstract":"This paper deals with the design, simulation and implementation of a digital signal processor (DSP)- based speed controller. The method applied is known as \"integral variable structure model following control \"(IVSMF)\": which takes the error between the state of the model and the controlled plant, this error is to be minimized using the boundaries defined in the sliding mode plane. The control has been used to drive two types of permanent magnet motors, a PMDC motor and brushless AC motor, obtaining accurate speed regulation in both cases. The implementation is developed using two DSP's sharing a common memory, one is dedicated to implement the control algorithm and the other is devote to control the current controlled inverter (PWM), process the speed and current signals coming from the Hall effect current sensors and the position encoder. The control algorithm used is such if considers the variations from plant parameters, considering those parameters can have variations due to different factors such as core manufacture temperature, friction, etc. The results obtained show the robustness and the reliability of the controller when used with both the DC motor and the AC brushless motor.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123235267","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930515
E. Peralta-Sanchez, C. Hernandez-Aramburo, A. Nava-Segura
Based on the instantaneous space vector variables of the induction motor-and-control-vector models, this paper presents the analysis and design of an induction motor direct stator flux and torque vector control. The voltage source inverter commutation strategy is based on the control actions of one stator flux hysteresis controller and one electromagnetic torque hysteresis controller. A switching table is derived from these controllers, that select the optimum inverter output voltage vectors, to obtain a rapid torque response. The instantaneous value of the stator flux space vector, and the region in the /spl alpha//spl beta/ domain, to which this instantaneous flux vector belongs, together with the instantaneous value of the electromagnetic torque are directly computed from the output vector voltages and currents of the VSI feeding the induction motor. These stator flux and electromagnetic torque instantaneous values are processed in their respective hysteresis controller to logically determine the switching pulses to the voltage source inverter. Experimental waveforms obtained from a prototype direct stator flux and torque vector control along with simulation waveforms are included to verify the theory presented in this paper.
{"title":"Prototype of an induction motor direct stator flux and torque vector control","authors":"E. Peralta-Sanchez, C. Hernandez-Aramburo, A. Nava-Segura","doi":"10.1109/ISIE.2000.930515","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930515","url":null,"abstract":"Based on the instantaneous space vector variables of the induction motor-and-control-vector models, this paper presents the analysis and design of an induction motor direct stator flux and torque vector control. The voltage source inverter commutation strategy is based on the control actions of one stator flux hysteresis controller and one electromagnetic torque hysteresis controller. A switching table is derived from these controllers, that select the optimum inverter output voltage vectors, to obtain a rapid torque response. The instantaneous value of the stator flux space vector, and the region in the /spl alpha//spl beta/ domain, to which this instantaneous flux vector belongs, together with the instantaneous value of the electromagnetic torque are directly computed from the output vector voltages and currents of the VSI feeding the induction motor. These stator flux and electromagnetic torque instantaneous values are processed in their respective hysteresis controller to logically determine the switching pulses to the voltage source inverter. Experimental waveforms obtained from a prototype direct stator flux and torque vector control along with simulation waveforms are included to verify the theory presented in this paper.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117343042","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930326
R. Vijayalakshmi, M. Trivedi, K. Shenai
This paper discusses the analytical model developed to explain the dynamics of a power bipolar junction transistor under both hard and soft switching (zero-voltage and zero-current) topologies. The model is developed based on nonquasi-static analysis. It is shown that the carrier dynamics during the turn-off stages of BJT in hard switching varies from soft switching. The carrier profile undergoes significant redistribution, especially in zero-current switching, which results in unique characteristics. Through this model, the physical analysis of the turn-off performance is explained. The model was tested for various critical circuit parameters and switching condition. A good match is observed between the measured and the modeled results, thus validating the model.
{"title":"Analytical model for power bipolar transistor in hard and soft-switching applications","authors":"R. Vijayalakshmi, M. Trivedi, K. Shenai","doi":"10.1109/ISIE.2000.930326","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930326","url":null,"abstract":"This paper discusses the analytical model developed to explain the dynamics of a power bipolar junction transistor under both hard and soft switching (zero-voltage and zero-current) topologies. The model is developed based on nonquasi-static analysis. It is shown that the carrier dynamics during the turn-off stages of BJT in hard switching varies from soft switching. The carrier profile undergoes significant redistribution, especially in zero-current switching, which results in unique characteristics. Through this model, the physical analysis of the turn-off performance is explained. The model was tested for various critical circuit parameters and switching condition. A good match is observed between the measured and the modeled results, thus validating the model.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125310996","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930376
C. Diedrich, R. Simon, R. Riedl
Besides the functional view on distributed control systems, the engineering aspect becomes more and more important. It will be essential to integrate the whole engineering process. Here the transport of information without losses from one engineering (live cycle) phase to an other must be provided. It is proposed here, to regard the distributed control system as a product as defined in ISO 10303 (STEP). Then all the methods and the already built infrastructure of STEP are available. The problem of describing the distributed control system is put down to the problem of describing product data (solved in STEP). This approach is validated by reference implementations as "Advanced Control Network" (ACORN) and "Modular, open and distributed Function Block systems for automation" (MOVA).
{"title":"Engineering of distributed control systems","authors":"C. Diedrich, R. Simon, R. Riedl","doi":"10.1109/ISIE.2000.930376","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930376","url":null,"abstract":"Besides the functional view on distributed control systems, the engineering aspect becomes more and more important. It will be essential to integrate the whole engineering process. Here the transport of information without losses from one engineering (live cycle) phase to an other must be provided. It is proposed here, to regard the distributed control system as a product as defined in ISO 10303 (STEP). Then all the methods and the already built infrastructure of STEP are available. The problem of describing the distributed control system is put down to the problem of describing product data (solved in STEP). This approach is validated by reference implementations as \"Advanced Control Network\" (ACORN) and \"Modular, open and distributed Function Block systems for automation\" (MOVA).","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"306 1-2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114131181","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930499
J. Salaet, J. Bordonau, J. Peracaula
A vector control based single-phase half-bridge boost converter circuit operating at a fixed high switching frequency is proposed in order to obtain a unity power factor (PF) and a balanced operation of the DC-link capacitors. In most cases this structure is controlled via a hysteresis comparator and a current sensor. Moreover, to prevent any imbalance in the voltages of the two DC-link capacitors it is necessary to use an additional voltage feedback. In the present paper a PWM switching technique which takes account of the phasorial nature of several electrical magnitudes in the converter is utilized. A mathematical model of the boost rectifier in the direct and quadrature axes is described and it is shown that this system is unstable and presents two control inputs. Then, to provide stability to the converter and to obtain the desired output DC voltage with a unity PF (though it can be set to another value) and voltage balance in the DC-link capacitors two feedback loops are implemented through both inputs. Analytical results are verified through simulation of the averaged circuit model. An experimental prototype is being made which will work from 90 V peak at the input to 300 V DC at the output.
{"title":"SVM based control of a single-phase half bridge boost rectifier under power factor correction and balanced operation","authors":"J. Salaet, J. Bordonau, J. Peracaula","doi":"10.1109/ISIE.2000.930499","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930499","url":null,"abstract":"A vector control based single-phase half-bridge boost converter circuit operating at a fixed high switching frequency is proposed in order to obtain a unity power factor (PF) and a balanced operation of the DC-link capacitors. In most cases this structure is controlled via a hysteresis comparator and a current sensor. Moreover, to prevent any imbalance in the voltages of the two DC-link capacitors it is necessary to use an additional voltage feedback. In the present paper a PWM switching technique which takes account of the phasorial nature of several electrical magnitudes in the converter is utilized. A mathematical model of the boost rectifier in the direct and quadrature axes is described and it is shown that this system is unstable and presents two control inputs. Then, to provide stability to the converter and to obtain the desired output DC voltage with a unity PF (though it can be set to another value) and voltage balance in the DC-link capacitors two feedback loops are implemented through both inputs. Analytical results are verified through simulation of the averaged circuit model. An experimental prototype is being made which will work from 90 V peak at the input to 300 V DC at the output.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128620981","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930529
Xu Xiao-feng, Lu Guo-feng, Hao Rong-Tai
In this paper, rotor field oriented control of an asynchronous motor system based on the feedforward decoupling method is studied. The relationship between vector control configurations, voltage decoupling schemes is discussed. The experimental results show an ideal performance of the control system.
{"title":"A rotor field oriented vector control system for electric traction application","authors":"Xu Xiao-feng, Lu Guo-feng, Hao Rong-Tai","doi":"10.1109/ISIE.2000.930529","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930529","url":null,"abstract":"In this paper, rotor field oriented control of an asynchronous motor system based on the feedforward decoupling method is studied. The relationship between vector control configurations, voltage decoupling schemes is discussed. The experimental results show an ideal performance of the control system.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129299982","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930525
J. Monteiro, G. Marques, J. Palma
In this paper, a control in a dq reference frame of the stator flux vector control method for the induction machines is presented. Adding a decoupling system, a simplified control method is achieved. The steady state error that appears when the control is in /spl alpha//spl beta/ co-ordinates is compensated efficiently. The excellent dynamic behavior is maintained. Analytical values for the PI controller are obtained using approximate models for the induction machine.
{"title":"A simplified stator flux vector control method in dq co-ordinates for induction machines","authors":"J. Monteiro, G. Marques, J. Palma","doi":"10.1109/ISIE.2000.930525","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930525","url":null,"abstract":"In this paper, a control in a dq reference frame of the stator flux vector control method for the induction machines is presented. Adding a decoupling system, a simplified control method is achieved. The steady state error that appears when the control is in /spl alpha//spl beta/ co-ordinates is compensated efficiently. The excellent dynamic behavior is maintained. Analytical values for the PI controller are obtained using approximate models for the induction machine.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130702368","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930536
J. G. Contreras, P.A. Vargas V
This paper introduces a new switching mode power supply with the following properties: zero-voltage switching, phase shifted control approach at constant frequency, three-phase input current with high power factor and low harmonic distortion. Operation and description of the circuit, theoretical analysis and simulations results, are presented.
{"title":"Analysis and simulation of a three-phase AC-DC converter with high power factor and phase shifted control","authors":"J. G. Contreras, P.A. Vargas V","doi":"10.1109/ISIE.2000.930536","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930536","url":null,"abstract":"This paper introduces a new switching mode power supply with the following properties: zero-voltage switching, phase shifted control approach at constant frequency, three-phase input current with high power factor and low harmonic distortion. Operation and description of the circuit, theoretical analysis and simulations results, are presented.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129070309","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 : 2000-12-04DOI: 10.1109/ISIE.2000.930494
A. Nava-Segura, J. Arellano-Padilla
In this paper the authors discuss the transient performance of a DSP-based power active filter, when subjected to sudden changes on both the instantaneous reactive power and oscillating active power demanded by a three-phase AC/DC rectifier, whose firing angle moved transiently from one value to another. A voltage source AC/DC inverter fed, either by a constant DC source, or by a previously charged DC capacitor, acts as a main compensator device for the active filter, whose transient performance was investigated under the action of these two types of DC voltage sources. Digital simulation and laboratory tests demonstrated that under the action of a constant DC source, the DSP-based active filter performed complete harmonic current suppression, and instantaneous reactive and oscillating active power compensation, under all circumstances of firing angle variations. When the active filter is supplied by a DC capacitor, a partial compensation is achieved, that improves when the amount of instantaneous reactive power becomes larger than the instantaneous oscillating active power.
{"title":"Transient performance of an active filter under harmonic power variations","authors":"A. Nava-Segura, J. Arellano-Padilla","doi":"10.1109/ISIE.2000.930494","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930494","url":null,"abstract":"In this paper the authors discuss the transient performance of a DSP-based power active filter, when subjected to sudden changes on both the instantaneous reactive power and oscillating active power demanded by a three-phase AC/DC rectifier, whose firing angle moved transiently from one value to another. A voltage source AC/DC inverter fed, either by a constant DC source, or by a previously charged DC capacitor, acts as a main compensator device for the active filter, whose transient performance was investigated under the action of these two types of DC voltage sources. Digital simulation and laboratory tests demonstrated that under the action of a constant DC source, the DSP-based active filter performed complete harmonic current suppression, and instantaneous reactive and oscillating active power compensation, under all circumstances of firing angle variations. When the active filter is supplied by a DC capacitor, a partial compensation is achieved, that improves when the amount of instantaneous reactive power becomes larger than the instantaneous oscillating active power.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130701845","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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