PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972, 1997
In this paper a simplified sinusoidal uninterruptible power supply (UPS) system is presented. The... more In this paper a simplified sinusoidal uninterruptible power supply (UPS) system is presented. The proposed scheme includes features such as high power €actor, low total harmonic distortion and good dynamic response on the output voltage. This scheme ha5 the desirable features of high efficiency, simple circuit and low cost compared to a traditional standalone multiple stages UPS with power factor correction. The circuit operation, analysis and experimental results of the proposed UPS scheme are presented. The UP § approach is a good solution for low power applications (2 500 W). The first possibility is to build the inverter stage throughout the FB-BI and the boosting function by using a heavy and bulky low frequency transformer (Fig 2a). The second possibility is to use a DC-DC boost converter in order to adequate the inverter input voltage (Fig. 2b). The last option is more suitable due to benefits such as reduced size and low weight. The U P S using a two-stage PFC-battery charger and a two-stage high frequency DC link-inverter is shown in Fig. 3.
In this paper some critical aspects for the design of sliding mode control applied to the boost i... more In this paper some critical aspects for the design of sliding mode control applied to the boost inverter are presented, including a theoretical analysis and the implementation of the control strategy. The SMC has been proposed in different papers as an option to improve the dynamic response of the electronics circuit. In this paper several design issues related to the
PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972
This paper describes an integrated boost-derived and flyback power factor corrector topology with... more This paper describes an integrated boost-derived and flyback power factor corrector topology with fast regulation of the output voltage for single-phase applications. With this scheme, major power goes through a single stage to the output, while both unity power factor and tight output regulation can be achieved, and the efficiency as well as the power density can be higher than in a conventional two cascade stage scheme
PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference
Universidad Politecnica de Madrid. * + lnstituto de lnvestigaciones Electricas. ETSI Industriales... more Universidad Politecnica de Madrid. * + lnstituto de lnvestigaciones Electricas. ETSI Industriales, Divisidn de Ingenieria Electr6nica. cl Jose Gutierrez Abascal.2 , 28006 Madrid, SPAIN. Departamento de Elecrr6nica. Apdo. 475, 62000 Cuernavaca, MEXICO.
In this paper, a new approach to building an AC uninterruptible power supply (UPS) is presented. ... more In this paper, a new approach to building an AC uninterruptible power supply (UPS) is presented. The scheme has just two power conversion stages; therefore, it has less power stages than the traditional UPS with power factor correction (PFC). The proposal includes the removal of the bulk capacitor at the output of the PFC converter allowing the use of a
2011 IEEE International Symposium on Industrial Electronics, 2011
ABSTRACT Electronic ballast for fluorescent lamp with high power factor is traditionally implemen... more ABSTRACT Electronic ballast for fluorescent lamp with high power factor is traditionally implemented in two stages: first one to obtain a unity power factor and second one to feed properly the lamp. Different topologies have been studied in order to able reduce the number of stages and employed controllers. In this paper a different electronic ballast, which is based on the 'Z' source inverter is analyzed, as a result of this the system becomes a single stage and high power factor electronic ballast. Operation, analysis, and experimental results are presented.
30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)
Page 1. Analysis and Experimental Study of the Buck, Boost and Buck-Boost Inverters N. Viuquezl J... more Page 1. Analysis and Experimental Study of the Buck, Boost and Buck-Boost Inverters N. Viuquezl J. Almazin*** J. Alvarez** C. Aguilat** J. Arau*** *Institute Tecnoldgico de Celaya. **CINVESTAV-IPN. *** CE NID ET Depto. de electrdnica. Depto. de ingenieria eldctrica. Depto. ...
PESC Record. 27th Annual IEEE Power Electronics Specialists Conference
In applications of S M P S for portable electronic equipment, simple structures that offers batte... more In applications of S M P S for portable electronic equipment, simple structures that offers battery backup capability, power factor correction and good dynamic response are highly appreciated. This paper describes a novel and simple DC-UPS structure, which offers excellents characteristics in terms of cost, size and efficiency, taking into account the reduced number of components. Results of an experimental prototype built to verify the proposed converter operation are also included.
In this paper a different approach to build an uninterruptible power supply (UPS) system is prese... more In this paper a different approach to build an uninterruptible power supply (UPS) system is presented. The proposed scheme includes features such as high power factor, low total harmonic distortion and good dynamic response at the output voltage. This scheme has the desirable features of high efficiency, simple circuit and low cost compared to a traditional standalone multiple stage UPS
Proceedings of IECON '95 - 21st Annual Conference on IEEE Industrial Electronics
AC/DC power converters are extensively used in various applications. The electronics equipment us... more AC/DC power converters are extensively used in various applications. The electronics equipment uses, as its input stage, a rectifier with a capacitor as a filter. A major problem associated with these loads are the harmonic currents injected into the power supply and low power factor. Therefore, it is highly desirable to include power factor correction schemes in such electronics equipment.
2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2011
Abstract The parallel connection of power electronic converters has had an increasing demand du... more Abstract The parallel connection of power electronic converters has had an increasing demand due the need of higher power. A desired feature in these connections is equal and stable current sharing among the converters. However this is not possible in real systems where factors ...
2008 IEEE International Symposium on Industrial Electronics, 2008
Different loads demand a high current at the start-up; an example are equipments that are compose... more Different loads demand a high current at the start-up; an example are equipments that are composed by motors, also there are some type of loads that demands large currents in short periods of time like the arc welding systems. These types of loads introduce disturbances at the input voltages, causing voltage sags or flickers. In this paper is presented a
2009 International Conference on Clean Electrical Power, 2009
Page 1. A Grid Connected Current Source Inverter. N. Vázquez, H. López, C. Hernández, E. Rodrígue... more Page 1. A Grid Connected Current Source Inverter. N. Vázquez, H. López, C. Hernández, E. Rodríguez, R. Orosco, J. Arau* Electronics department Instituto Tecnológico de Celaya, Celaya, Mexico *Cenidet, Cuernavaca, Mexico ... [3] H. Ertl, JW Kolar, and FC Zach, A Novel ...
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009
Nowadays, portable applications are very important in telecommunications, business and entertainm... more Nowadays, portable applications are very important in telecommunications, business and entertainment markets. Handheld devices like ultra mobile PCs, cell phones, PDAs and mobile Internet devices are battery-dependant. Synchronous buck converter (SBC) is extensively used as voltage regulator (VR) in mobile devices; however, at very light-load operation, the converter efficiency is severely reduced. That condition is normal in these converters, but
2008 IEEE Power Electronics Specialists Conference, 2008
... Figure 2. System with one double-input dc-dc converter A Double Input DC/DC Converter for Pho... more ... Figure 2. System with one double-input dc-dc converter A Double Input DC/DC Converter for Photovoltaic/Wind Systems Nimrod Vazquez*, Alvaro Hernandez*, ClaudiaHernandez*, Elias Rodríguez*, Rodolfo Orosco* and Jaime Arau** ...
2008 11th IEEE International Power Electronics Congress, 2008
Different loads demand a high current at the start-up; an example are equipments that are compose... more Different loads demand a high current at the start-up; an example are equipments that are composed by motors, also there are some type of loads that demands large currents in short periods of time like the arc welding systems. These types of loads introduce disturbances at the input voltages, causing voltage sags or flickers. In this paper is presented a
PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972, 1997
In this paper a simplified sinusoidal uninterruptible power supply (UPS) system is presented. The... more In this paper a simplified sinusoidal uninterruptible power supply (UPS) system is presented. The proposed scheme includes features such as high power €actor, low total harmonic distortion and good dynamic response on the output voltage. This scheme ha5 the desirable features of high efficiency, simple circuit and low cost compared to a traditional standalone multiple stages UPS with power factor correction. The circuit operation, analysis and experimental results of the proposed UPS scheme are presented. The UP § approach is a good solution for low power applications (2 500 W). The first possibility is to build the inverter stage throughout the FB-BI and the boosting function by using a heavy and bulky low frequency transformer (Fig 2a). The second possibility is to use a DC-DC boost converter in order to adequate the inverter input voltage (Fig. 2b). The last option is more suitable due to benefits such as reduced size and low weight. The U P S using a two-stage PFC-battery charger and a two-stage high frequency DC link-inverter is shown in Fig. 3.
In this paper some critical aspects for the design of sliding mode control applied to the boost i... more In this paper some critical aspects for the design of sliding mode control applied to the boost inverter are presented, including a theoretical analysis and the implementation of the control strategy. The SMC has been proposed in different papers as an option to improve the dynamic response of the electronics circuit. In this paper several design issues related to the
PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972
This paper describes an integrated boost-derived and flyback power factor corrector topology with... more This paper describes an integrated boost-derived and flyback power factor corrector topology with fast regulation of the output voltage for single-phase applications. With this scheme, major power goes through a single stage to the output, while both unity power factor and tight output regulation can be achieved, and the efficiency as well as the power density can be higher than in a conventional two cascade stage scheme
PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference
Universidad Politecnica de Madrid. * + lnstituto de lnvestigaciones Electricas. ETSI Industriales... more Universidad Politecnica de Madrid. * + lnstituto de lnvestigaciones Electricas. ETSI Industriales, Divisidn de Ingenieria Electr6nica. cl Jose Gutierrez Abascal.2 , 28006 Madrid, SPAIN. Departamento de Elecrr6nica. Apdo. 475, 62000 Cuernavaca, MEXICO.
In this paper, a new approach to building an AC uninterruptible power supply (UPS) is presented. ... more In this paper, a new approach to building an AC uninterruptible power supply (UPS) is presented. The scheme has just two power conversion stages; therefore, it has less power stages than the traditional UPS with power factor correction (PFC). The proposal includes the removal of the bulk capacitor at the output of the PFC converter allowing the use of a
2011 IEEE International Symposium on Industrial Electronics, 2011
ABSTRACT Electronic ballast for fluorescent lamp with high power factor is traditionally implemen... more ABSTRACT Electronic ballast for fluorescent lamp with high power factor is traditionally implemented in two stages: first one to obtain a unity power factor and second one to feed properly the lamp. Different topologies have been studied in order to able reduce the number of stages and employed controllers. In this paper a different electronic ballast, which is based on the 'Z' source inverter is analyzed, as a result of this the system becomes a single stage and high power factor electronic ballast. Operation, analysis, and experimental results are presented.
30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321)
Page 1. Analysis and Experimental Study of the Buck, Boost and Buck-Boost Inverters N. Viuquezl J... more Page 1. Analysis and Experimental Study of the Buck, Boost and Buck-Boost Inverters N. Viuquezl J. Almazin*** J. Alvarez** C. Aguilat** J. Arau*** *Institute Tecnoldgico de Celaya. **CINVESTAV-IPN. *** CE NID ET Depto. de electrdnica. Depto. de ingenieria eldctrica. Depto. ...
PESC Record. 27th Annual IEEE Power Electronics Specialists Conference
In applications of S M P S for portable electronic equipment, simple structures that offers batte... more In applications of S M P S for portable electronic equipment, simple structures that offers battery backup capability, power factor correction and good dynamic response are highly appreciated. This paper describes a novel and simple DC-UPS structure, which offers excellents characteristics in terms of cost, size and efficiency, taking into account the reduced number of components. Results of an experimental prototype built to verify the proposed converter operation are also included.
In this paper a different approach to build an uninterruptible power supply (UPS) system is prese... more In this paper a different approach to build an uninterruptible power supply (UPS) system is presented. The proposed scheme includes features such as high power factor, low total harmonic distortion and good dynamic response at the output voltage. This scheme has the desirable features of high efficiency, simple circuit and low cost compared to a traditional standalone multiple stage UPS
Proceedings of IECON '95 - 21st Annual Conference on IEEE Industrial Electronics
AC/DC power converters are extensively used in various applications. The electronics equipment us... more AC/DC power converters are extensively used in various applications. The electronics equipment uses, as its input stage, a rectifier with a capacitor as a filter. A major problem associated with these loads are the harmonic currents injected into the power supply and low power factor. Therefore, it is highly desirable to include power factor correction schemes in such electronics equipment.
2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), 2011
Abstract The parallel connection of power electronic converters has had an increasing demand du... more Abstract The parallel connection of power electronic converters has had an increasing demand due the need of higher power. A desired feature in these connections is equal and stable current sharing among the converters. However this is not possible in real systems where factors ...
2008 IEEE International Symposium on Industrial Electronics, 2008
Different loads demand a high current at the start-up; an example are equipments that are compose... more Different loads demand a high current at the start-up; an example are equipments that are composed by motors, also there are some type of loads that demands large currents in short periods of time like the arc welding systems. These types of loads introduce disturbances at the input voltages, causing voltage sags or flickers. In this paper is presented a
2009 International Conference on Clean Electrical Power, 2009
Page 1. A Grid Connected Current Source Inverter. N. Vázquez, H. López, C. Hernández, E. Rodrígue... more Page 1. A Grid Connected Current Source Inverter. N. Vázquez, H. López, C. Hernández, E. Rodríguez, R. Orosco, J. Arau* Electronics department Instituto Tecnológico de Celaya, Celaya, Mexico *Cenidet, Cuernavaca, Mexico ... [3] H. Ertl, JW Kolar, and FC Zach, A Novel ...
2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009
Nowadays, portable applications are very important in telecommunications, business and entertainm... more Nowadays, portable applications are very important in telecommunications, business and entertainment markets. Handheld devices like ultra mobile PCs, cell phones, PDAs and mobile Internet devices are battery-dependant. Synchronous buck converter (SBC) is extensively used as voltage regulator (VR) in mobile devices; however, at very light-load operation, the converter efficiency is severely reduced. That condition is normal in these converters, but
2008 IEEE Power Electronics Specialists Conference, 2008
... Figure 2. System with one double-input dc-dc converter A Double Input DC/DC Converter for Pho... more ... Figure 2. System with one double-input dc-dc converter A Double Input DC/DC Converter for Photovoltaic/Wind Systems Nimrod Vazquez*, Alvaro Hernandez*, ClaudiaHernandez*, Elias Rodríguez*, Rodolfo Orosco* and Jaime Arau** ...
2008 11th IEEE International Power Electronics Congress, 2008
Different loads demand a high current at the start-up; an example are equipments that are compose... more Different loads demand a high current at the start-up; an example are equipments that are composed by motors, also there are some type of loads that demands large currents in short periods of time like the arc welding systems. These types of loads introduce disturbances at the input voltages, causing voltage sags or flickers. In this paper is presented a
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