{"title":"Design of fluorescent lamp ballast with PFC using a power piezoelectric transformer","authors":"Sungjin Choi, Kyu-Chan Lee, B. Cho","doi":"10.1109/APEC.1998.654039","DOIUrl":"https://doi.org/10.1109/APEC.1998.654039","url":null,"abstract":"An investigation of a high power piezoelectric transformer as a potential component for a fluorescent lamp ballast with power factor correction (PFC) is discussed. The attractiveness of the piezoelectric transformer is primarily the simplicity of the resulting circuit, and it is easy to produce in mass with a low cost. Electrical modeling, considering operating current level and analysis of the piezoelectric transformer are performed through measurements to design a fluorescent lamp ballast with a single stage charge pump PFC. The experimental and simulation results are provided to verify theoretical analysis.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134141635","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":"Investigation of soft-switching techniques for Power Electronics Building Blocks (PEBB)","authors":"H. Dai, K. Xing, F. Lee","doi":"10.1109/APEC.1998.653966","DOIUrl":"https://doi.org/10.1109/APEC.1998.653966","url":null,"abstract":"The Power Electronics Building Blocks (PEBB) concept is very attractive for the integration of distributed power systems. However, PEBB modules have issues different from discrete power devices. For hard switching, the PEBB module usually has high switching losses, high power dissipation in capacitors and severe conductive EMI. Soft-switching may solve some of these problems. This paper investigates two representative soft-switching techniques (ZVT and ZCT) for PEBB. They are evaluated and proven by experimental results.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133858005","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 zero-voltage-transition PWM Cuk power factor corrector","authors":"Ching-Jung Tseng, Chern-Lin Chen","doi":"10.1109/APEC.1998.653968","DOIUrl":"https://doi.org/10.1109/APEC.1998.653968","url":null,"abstract":"A novel zero-voltage-transition (ZVT) PWM Cuk power factor corrector (PFC) is proposed to achieve unity power factor under zero-voltage-switching (ZVS) operations. In the proposed ZVT PWM Cuk PFC, not only the power switch but also the power diode commutate under ZVS. The proposed ZVT topology has the shortest ZVT time and thus the shortest minimum duty cycle compared with other ZVT topologies. The resonant inductor can be discharged regardless of the state of the main switch. Extremely short ZVT time and robust discharge of a resonant inductor make the proposed ZVT topology well qualified for variable duty and high switching frequency applications. Analytical studies on the proposed ZVT PWM Cuk PFC are presented in detail. A 400 W, 50 kHz prototype has been built in the laboratory to experimentally verify the analysis.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123088000","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 Active Common-mode-voltage Compensator (ACCom) for bearing current reduction of PWM VSI-fed induction motors","authors":"Y. Xiang","doi":"10.1109/APEC.1998.654020","DOIUrl":"https://doi.org/10.1109/APEC.1998.654020","url":null,"abstract":"In this paper, it is first observed from the experimental investigation that common-mode-voltage generated by PWM VSI is tightly related to the shaft voltage and bearing current of the driven induction motors. Based on this observation, this paper proposed a novel Active Common-mode-voltage Compensator (ACCom), which consists of a single-phase multi-level half-bridge inverter (SPMHI) and a common mode transformer. For modeling bearing currents, high frequency models of PWM inverters and induction motors are developed. Then, detailed analysis and extensive computer simulation are presented to explain the principle of ACCom and to prove the concept of ACCom. Simulation results show that ACCom significantly reduce the shaft voltage, bearing current and leakage currents of the induction motor.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122463141","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}
A. Ginart, R. Esteller, A. Maduro, R. Pinero, R. Moncada
{"title":"Performance improvement in AC-AC SCR controller","authors":"A. Ginart, R. Esteller, A. Maduro, R. Pinero, R. Moncada","doi":"10.1109/APEC.1998.647708","DOIUrl":"https://doi.org/10.1109/APEC.1998.647708","url":null,"abstract":"Standard use of AC SCR controllers is for starting induction motors. However, the reduction of the starting torque has limited its application to no load starters. This paper uses a novel technique to expand the range of application of AC SCR controllers. The technique increases the frequency in discrete steps until the line frequency is reached. These discrete steps are sub-multiples of the line frequency. The subfrequencies are generated by the omission or inclusion of line frequency half cycles. The sequence voltages are predefined for each sub-multiple of the frequency. In order to obtain positive torque for all the sub-frequencies, the system is properly unbalanced. This strategy allows a start similar to the one achieved by the inverters, and additionally allows low speed motor operation with high torque. The system is complemented with a control of constant impedance for minimization of the reactive power when the motor operates in sub-load. Performance testing of the actual system has shown good results, confirming it as an optional and cheaper alternative for starting-loaded induction motors with low RMS current.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123980063","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":"An integrated controller module for distributed control of power electronics","authors":"D. Toit, le Roux, J. Enslin","doi":"10.1109/APEC.1998.654001","DOIUrl":"https://doi.org/10.1109/APEC.1998.654001","url":null,"abstract":"This paper introduces the concept of a module controller. The module controller integrates the control unit, power supply, measurement unit and communications link into the IGBT module, or as a standard add-on module. The benefits of this is both financial, technical and include lower manufacturing and design cost, increased reliability and ease of maintenance of the system as a whole.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126262287","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":"Automated small-signal analysis of switching converters using a general-purpose time-domain simulator","authors":"D. Maksimović","doi":"10.1109/APEC.1998.647715","DOIUrl":"https://doi.org/10.1109/APEC.1998.647715","url":null,"abstract":"The paper describes a method for automated small-signal frequency response analysis based on transient response obtained using a general-purpose simulation tool such as Spice. The method is based on using the simulation tool to evaluate the converter impulse response. The main advantage of the proposed method as a design verification tool is that frequency responses can be generated efficiently for any converter configuration and any model complexity supported by the general-purpose simulator. Application examples are included to demonstrate very good correlation between the generated responses and experimental data, and to compare the results with predictions of approximate analytical methods.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128008460","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 fuzzy logic protection scheme implemented in a DC traction substation","authors":"E. Beaud, J. Enslin","doi":"10.1109/APEC.1998.654037","DOIUrl":"https://doi.org/10.1109/APEC.1998.654037","url":null,"abstract":"This paper proposes the combination of a fuzzy controller with a conventional power system protection controller to give the system a measure of ride-through capability. The fuzzy controller forms a layer of protection between the normal operating range and the conventional protection scheme offering greater system robustness.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128046361","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":"An economical single-phase passive power-factor-corrected rectifier: topology, operation, extensions, and design for compliance","authors":"R. Redl","doi":"10.1109/APEC.1998.647729","DOIUrl":"https://doi.org/10.1109/APEC.1998.647729","url":null,"abstract":"This paper describes a novel passive power-factor correction circuit that ensures the compliance of the capacitively filtered single-phase rectifier with the EN61000-3-2 norm at a cost much lower than the known solutions. The circuit can be used to about 300 W. The additional components are a small inductor, a small capacitor and a diode.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128483126","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":"Effects of diode recovery characteristics on electromagnetic noise in PFCs","authors":"A. Guerra, F. Maddaleno, M. Soldano","doi":"10.1109/APEC.1998.654012","DOIUrl":"https://doi.org/10.1109/APEC.1998.654012","url":null,"abstract":"This paper presents a comparison of different diodes used in boost power factor correctors (PFC) from the point of view of electromagnetic compatibility. Diodes produced by various manufacturers, all with the same nominal recovery time, have been characterized and tested on a PFC circuit. Whereas the conducted emissions do not depend on the used diode, the radiated emissions are strongly influenced by the recovery behavior. In particular the snap factor is important for the noise level and the reverse capacitance determines the ringing frequency and hence the noise peak.","PeriodicalId":156715,"journal":{"name":"APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125012593","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}