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检索条件"机构=Post-Graduate Program in Electrical Engineering - PPgEE - COPELE - DEE"

共 103 条记录，以下是1-10 订阅

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Single-Phase Transformerless UPS with Interleaved Boost Converters for Battery Discharging

Single-Phase Transformerless UPS with Interleaved Boost Conv...

引用

2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

作者： Pinto, Alan R. A. Bahia, Filipe A. C. Souza, Reuben P. R. Pinheiro, José R. Costa, Fabiano F. Federal University of Bahia Post-Graduate Program in Electrical Engineering - Ppgee Salvador Brazil Federal University of Bahia Dept. of Electrical and Computer Engineering - Deec Salvador Brazil Federal University of Campina Grande Dept. of Electrical Engineering - Dee Campina Grande Brazil

ISBN: (纸本)9798350316445

This paper proposes a reconfiguration for a single-phase, double conversion uninterruptible power supply (UPS). With the addition of two static switches to the original circuit, the UPS mitigates the ripple in the current, through battery discharge performed by two legs. Other than these switches, the circuit topology is preserved. The preliminary results show a satisfactory level of ripples for the inductor current and suitable power quality for the output voltage. © 2023 IEEE.

关键词： battery mode discharger interleaved boost normal mode

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Three-phase AC-DC Isolated Rectifier with Single-Transformer Excited by the Common Mode Voltage and ZVS Capability

Three-phase AC-DC Isolated Rectifier with Single-Transformer...

引用

IEEE Energy Conversion Congress and Exposition, ECCE

作者： Vitor Freire Bezerra Montiê Alves Vitorino Jean Torelli Cardoso Paulo Peixoto Praça Graduate Program in Electrical Engineering (PPgEE–COPELE) Industrial Electronics and Machine Drive Laboratory (LEIAM) Federal University of Campina Grande (UFCG) Campina Grande Brazil Departamento de Engenharia Elétrica (DEE) Universidade Federal do Ceará (UFC) Fortaleza Brazil

ISBN: (数字)9798350376067

ISBN: (纸本)9798350376074

This paper proposes a new three-phase AC-DC isolated rectifier topology with zero-voltage switching capability. The structure is obtained by adding a single transformer that is excited by the common-mode voltage generated by the three-leg converter. It is presented an analysis of the converter's operation, covering modulation concepts and control strategies to maintain the output voltage at the desired value and guarantee unity power factor and very low total harmonic distortions. The experimental results is obtained over a 1kW prototype which provides a power factor of 0.99 and efficiency of 91.7%. The full results are presented and discussed to validate the proposed converter topology.

关键词： Reactive power Total harmonic distortion Simulation Rectifiers Prototypes Zero voltage switching Transformers Topology Voltage control Periodic structures

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Single-Phase Transformerless UPS with Interleaved Boost Converters for Battery Discharging

Single-Phase Transformerless UPS with Interleaved Boost Conv...

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IEEE Energy Conversion Congress and Exposition, ECCE

作者： Alan R. A. Pinto Filipe A. C. Bahia Reuben P. R. Souza José R. Pinheiro Fabiano F. Costa Post-Graduate Program in Electrical Engineering PPGEE Federal University of Bahia Salvador Brazil Dept. of Electrical and Computer Engineering DEEC Federal University of Bahia Salvador Brazil Dept. of Electrical Engineering DEE Federal University of Campina Grande Campina Grande Brazil

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Dual Vienna Rectifiers with a Single Dc-link for Wind Energy Conversion System Applications 12

Dual Vienna Rectifiers with a Single Dc-link for Wind Energy...

引用

12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020

作者： Monteiro, Amanda P. Jacobina, Cursino B. Bahia, Filipe A. C. Sousa, Reuben P. R. Post-Graduate Program in Electrical Engineering PPgEE/COPELE Campina Grande Paraíba58429-900 Brazil Salvador Bahia40210-630 Brazil

ISBN: (纸本)9781728158266

In this paper, dual Vienna rectifiers are proposed for Wind Energy Conversion System (WECS) applications with Open-End Winding (OEW) Permanent Magnet Synchronous Generator (PMSG). Due to the reduced number of controlled switches, the proposed topologies have reduced costs and high reliability. Besides, they provide a better power quality using the same number of controlled switches than conventional structures presented in the literature, making them very attractive options for industry applications. The system model, space vector modulation, and control strategy are given. Simulation results are provided in order to validate their performance and feasibility. © 2020 IEEE.

关键词： Vector spaces

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Multilevel Single-Phase Four-Leg AC-DC-AC Converter 12

Multilevel Single-Phase Four-Leg AC-DC-AC Converter

引用

12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020

作者： Rodrigues, Phelipe L. S. Jacobina, Cursino B. Lima, Antonio M. N. Post-Graduate Program in Electrical Engineering - PPgEE - Copele Paraíba58429-900 Brazil Department of Electrical Engineering Campina Grande Paraíba58429-900 Brazil

ISBN: (纸本)9781728158266

This paper presents a single-phase four-leg ac-dc-ac converter, with one leg shared by the grid side and the load side. The proposed topology can generate input and output voltages with seven levels, presenting reduced harmonic distortion, in addition to using reduced voltage switches. The space-vector pulsewidth modulation strategy (SV-PWM), the control technique, the system model, and a comparison with a three-leg topology will be presented. As for performance comparison parameters, harmonic distortion in currents and voltages, the average switching frequency, and semiconductor losses will be used. The topology was simulated and assembled in the laboratory to obtain experimental results. © 2020 IEEE.

关键词： Topology

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Universal Active Power Filter Based on AC-DC-AC Converter with Six Controlled Switches for Single-Phase Systems 12

Universal Active Power Filter Based on AC-DC-AC Converter wi...

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12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020

作者： Rodrigues, Phelipe L. S. Jacobina, Cursino B. Lima, Antonio M. N. Post-Graduate Program in Electrical Engineering - PPgEE - Copele Campina Grande Paraíba58429-900 Brazil Department of Electrical Engineering Campina Grande Paraíba58429-900 Brazil

ISBN: (数字)9781728158266

ISBN: (纸本)9781728158266

This paper presents an ac-dc-ac converter with six controlled switches for single-phase systems applied as a universal active power filter (UAPF). The proposed topology is feasible for compensating voltages swells and harmonics generated by nonlinear loads. The difference between the conventional and proposed topology is the replacement of a controlled leg (composed of IGBTs) for an uncontrolled leg (composed only of diodes). For performance comparisons, current THD, switching and conduction losses of the semiconductors, average switching frequency, and power in the transformer were used as parameters. Control and pulsewidth modulation techniques based on space vector approaches were developed to eliminate zero-crossing distortions caused by the use of the uncontrolled leg. Simulation and experimental results were presented for validation of the mathematical model. © 2020 IEEE.

关键词： Topology

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Unidirectional Five-Level Rectifiers for WECS Applications

Unidirectional Five-Level Rectifiers for WECS Applications

引用

IEEE Energy Conversion Congress and Exposition, ECCE

作者： Amanda P. Monteiro Cursino B. Jacobina Bahia Filipe A. C. Sousa Reuben P. R. Post-Graduate Program in Electrical Engineering - PPgEE/COPELE Federal University of Campina Grande (UFCG) Campina Grande Paraíba Brazil Federal University of Bahia (UFBA) Salvador Brazil

This paper proposes two three-phase five-level power conversion systems. They can be employed in a wind energy converter system (WECS) application as the machine side rectifier, connected to the permanent magnet synchronous machine (PMSM) by an open-end winding (OEW) arrangement. Compared to the conventional topology, proposed ones lack the use of six clamping diodes in their structures. Even though, they also achieve the same power quality as the conventional one. Besides, proposed configurations may have fewer semiconductor devices in the current path, providing slightly lower power losses. Furthermore, the control system used ensures the synchronization between voltage and current, providing a high power factor operation. The converter equations, pulse-width modulation technique, and control strategy are detailed. Simulation and experimental results are provided in order to confirm their performance and feasibility.

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Three-Phase Integrated PFC AC-AC Half-Bridge Boost Rectifier and Class D Resonant Inverter with Weak Coupled Coils for IH Application

Three-Phase Integrated PFC AC-AC Half-Bridge Boost Rectifier...

引用

Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Ruan C. M. Gomes Montiê A. Vitorino Maurício B. R. Corrêa Post-Graduate Program in Electrical Engineering (PPgEE–COPELE) Federal University of Campina Grande (UFCG) Campina Grande PB Brazil

ISBN: (数字)9781728148298

ISBN: (纸本)9781728148304

This paper presents a three-phase integrated PFC AC-AC resonant inverter with boost effect for Induction Heating (IH) Application. This converter is composed by three independent half-bridge boost rectifier and class D resonant inverters with non-smoothed DC link that achieve high power factor operation. The magnetic coupling of the three coils was measured for characterizing the resonant behavior of the arrangement. Experimental results validate the modes of operation with ZVS and the converter performance in the entire power input range (PF and THD).

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Multilevel Single-Phase Four-Leg AC-DC-AC Converter

Multilevel Single-Phase Four-Leg AC-DC-AC Converter

引用

IEEE Energy Conversion Congress and Exposition

作者： Phelipe L. S. Rodrigues Cursino B. Jacobina Antonio M. N. Lima Post-Graduate Program in Electrical Engineering - PPgEE – COPELE Federal University of Campina Grande (UFCG) Paraíba Brazil Federal University of Campina Grande (UFCG) Paraíba Brazil

ISBN: (数字)9781728158266

ISBN: (纸本)9781728158273

关键词： Topology Legged locomotion Switching frequency Mathematical model Switches Pulse width modulation Load modeling

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Dual Vienna Rectifiers with a Single Dc-link for Wind Energy Conversion System Applications

Dual Vienna Rectifiers with a Single Dc-link for Wind Energy...

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IEEE Energy Conversion Congress and Exposition

作者： Amanda P. Monteiro Cursino B. Jacobina Filipe A. C. Bahia Reuben P. R. Sousa PPgEE/COPELE Post-Graduate Program in Electrical Engineering Federal University of Campina Grande (UFCG) Campina Grande Paraíba Brazil Federal University of Bahia (UFBA) Salvador Bahia Brazil

ISBN: (数字)9781728158266

ISBN: (纸本)9781728158273

关键词： Topology Voltage control Switches Power quality Power electronics

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