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.2000.930389
G. Uma, J. Latha, C. Chellamuthu
A new method of speed control of DC motors using pulse width modulation (PWM) based quasi-resonant (QR) zero voltage switching (ZVS) DC to DC converters is proposed. This control minimizes the switching losses, eliminates electromagnetic interference (EMI) and improves efficiency and commutation capability of the motor. The speed control is achieved by controlling the free wheeling period of the resonant inductor of a quasi-resonant converter (QRC). A half wave (HW) constant frequency (CF) ZVS converter exhibits a nonlinear relationship between its ON time and average output voltage. Hence, a fuzzy speed controller is designed to get better performance under load conditions. The software package PSPICE A/D is used for simulation.
提出了一种基于脉宽调制(PWM)的准谐振零电压开关(ZVS) DC - DC变换器控制直流电机速度的新方法。这种控制最大限度地减少了开关损耗，消除了电磁干扰(EMI)，提高了电机的效率和换相能力。通过控制准谐振变换器(QRC)谐振电感的自由转动周期来实现速度控制。半波(HW)恒频(CF) ZVS变换器的导通时间与平均输出电压呈非线性关系。因此，设计了一种模糊速度控制器，以获得更好的负载性能。仿真采用PSPICE A/D软件包。
{"title":"A fuzzy based speed controller for soft switched DC to DC converter fed DC servomotor for aero space applications","authors":"G. Uma, J. Latha, C. Chellamuthu","doi":"10.1109/ISIE.2000.930389","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930389","url":null,"abstract":"A new method of speed control of DC motors using pulse width modulation (PWM) based quasi-resonant (QR) zero voltage switching (ZVS) DC to DC converters is proposed. This control minimizes the switching losses, eliminates electromagnetic interference (EMI) and improves efficiency and commutation capability of the motor. The speed control is achieved by controlling the free wheeling period of the resonant inductor of a quasi-resonant converter (QRC). A half wave (HW) constant frequency (CF) ZVS converter exhibits a nonlinear relationship between its ON time and average output voltage. Hence, a fuzzy speed controller is designed to get better performance under load conditions. The software package PSPICE A/D is used for simulation.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"102 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":"123539422","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.2000.930325
R. Trivedi, K. Shenai
Resonant conversion offers dramatic reduction in switching stress, enabling an increase in switching frequency until the device once again becomes the limiting factor. However, estimates on the performance of the device in resonant converters do not adequately account for device-circuit interactions that strongly influence the switching losses. Additionally, lack of satisfactory and reliable circuit models for soft-switching performance of power devices hinders the design of optimum soft-switching converters. For these reasons, it is vital to understand device performance in soft-switching applications using physical analysis and optimize it for highest switching frequency. This paper presents a study of the performance of IGBT in a resonant DC link inverter and series resonant inverter, and compares their performance against the voltage source inverter. Due to the contribution of switching losses, it is necessary to develop circuit models that can reliably predict device transient performance.
{"title":"Device optimization and modeling for resonant power conversion","authors":"R. Trivedi, K. Shenai","doi":"10.1109/ISIE.2000.930325","DOIUrl":"https://doi.org/10.1109/ISIE.2000.930325","url":null,"abstract":"Resonant conversion offers dramatic reduction in switching stress, enabling an increase in switching frequency until the device once again becomes the limiting factor. However, estimates on the performance of the device in resonant converters do not adequately account for device-circuit interactions that strongly influence the switching losses. Additionally, lack of satisfactory and reliable circuit models for soft-switching performance of power devices hinders the design of optimum soft-switching converters. For these reasons, it is vital to understand device performance in soft-switching applications using physical analysis and optimize it for highest switching frequency. This paper presents a study of the performance of IGBT in a resonant DC link inverter and series resonant inverter, and compares their performance against the voltage source inverter. Due to the contribution of switching losses, it is necessary to develop circuit models that can reliably predict device transient performance.","PeriodicalId":298625,"journal":{"name":"ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543)","volume":"3 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":"127389409","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.2000.930494
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}
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.2000.930529
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}
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