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F.l.m. Antunes - One of the best experts on this subject based on the ideXlab platform.

  • High gain DC-DC boost converter with a coupling inductor
    2009 Brazilian Power Electronics Conference, 2009
    Co-Authors: Felinto S. F. Silva, F.l.m. Antunes, Antônio A. A Freitas, Sérgio Daher, Saulo C. Ximenes, Sarah K. A. Sousa, M. S. Edilson, C.m.t. Cruz
    Abstract:

    This paper presents a design, mathematical modeling, simulation results and laboratory implementation of a 300 W high gain dc-dc boost converter with a coupled inductor, to step up the 24 V of a battery bank to 311 Vdc, aiming to supply residential loads with dc voltage in an off-grid PV system. The converter can supply most of the residential ac loads which input stage is a Single-Phase Rectifier. Laboratory tests with the 300 W converter supplying electronic lights, mobile charger and audio-video system ac showed the viability of the proposed idea.

  • A family of turn-on and turn-off nondissipative passive snubbers for soft-switching Single-Phase Rectifier with reduced conduction losses
    2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a family of nondissipative passive snubbers applied to the Single-Phase Rectifier with reduced conduction losses, for applications in power supply for telecommunication and UPS. The family of lossless passive snubbers presented in this paper guarantees soft-commutation during the turn-on and the turn-off intervals of the switch. The snubber not only should slow the di/dt and dv/dt rates of the active switch, but also losslessly recover the energy stored in the zero-current inductor and in the zero-voltage capacitor, leading to reduced voltage stress across the switch and diodes. A methodology to generate the family of passive snubbers for the Single-Phase Rectifier with reduced conduction losses is also presented. Simulation and experimental results for a Single-Phase Rectifier 3000 W laboratory prototype using one snubber of the family are also presented.

  • Study of Passive Snubbers Applied to a Single-Phase High Power Factor Rectifier
    IEEE Latin America Transactions, 2004
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a family of non-dissipative passive snubbers applied to a Single-Phase Rectifier with unity input power factor. This Single-Phase Rectifier presents reduced conduction losses because the current flows through two power semiconductors only, for any stage of operation. The family of lossless passive snubbers presented in this paper guarantees soft-commutation during the turn-on and the turn-off intervals of the switch within a large range of variation of the input current. The snubber circuit not only should slow the di/dt and dv/dt rates of the active switch, but also losslessly recover the energy stored in the zero-current inductor and in the zero-voltage capacitor, leading to reduced voltage stress across the switches and diodes. The association of the family of high performance snubber circuits here presented with the Single-Phase Rectifier with reduced conduction losses results in a high efficiency Rectifier, free from overvoltages across the power switches. To access the performance of the proposed family, simulation and experimental results for a Single-Phase Rectifier 3000W laboratory prototype using one snubber of the family are also presented.

  • Unit power factor Single-Phase Rectifier with reduced conduction loss using a nondissipative passive snubber
    IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2002
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a Single-Phase Rectifier with low conduction losses. To have a further reduction in the Rectifier losses, a passive nondissipative snubber is included in the Rectifier. The snubber allows nondissipative commutation at the switches within a large range of the input current. The snubber reduces the rate of the current growth during the switch turn on and also the rate of voltage grow during the switch turn off. The performance of the snubber circuit associated with the low conduction losses results in a Rectifier with high efficiency. It is also presented the design of a three kW Rectifier and simulation results are shown to access the performance of the proposed Rectifier.

C.m.t. Cruz - One of the best experts on this subject based on the ideXlab platform.

  • High gain DC-DC boost converter with a coupling inductor
    2009 Brazilian Power Electronics Conference, 2009
    Co-Authors: Felinto S. F. Silva, F.l.m. Antunes, Antônio A. A Freitas, Sérgio Daher, Saulo C. Ximenes, Sarah K. A. Sousa, M. S. Edilson, C.m.t. Cruz
    Abstract:

    This paper presents a design, mathematical modeling, simulation results and laboratory implementation of a 300 W high gain dc-dc boost converter with a coupled inductor, to step up the 24 V of a battery bank to 311 Vdc, aiming to supply residential loads with dc voltage in an off-grid PV system. The converter can supply most of the residential ac loads which input stage is a Single-Phase Rectifier. Laboratory tests with the 300 W converter supplying electronic lights, mobile charger and audio-video system ac showed the viability of the proposed idea.

  • A family of turn-on and turn-off nondissipative passive snubbers for soft-switching Single-Phase Rectifier with reduced conduction losses
    2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a family of nondissipative passive snubbers applied to the Single-Phase Rectifier with reduced conduction losses, for applications in power supply for telecommunication and UPS. The family of lossless passive snubbers presented in this paper guarantees soft-commutation during the turn-on and the turn-off intervals of the switch. The snubber not only should slow the di/dt and dv/dt rates of the active switch, but also losslessly recover the energy stored in the zero-current inductor and in the zero-voltage capacitor, leading to reduced voltage stress across the switch and diodes. A methodology to generate the family of passive snubbers for the Single-Phase Rectifier with reduced conduction losses is also presented. Simulation and experimental results for a Single-Phase Rectifier 3000 W laboratory prototype using one snubber of the family are also presented.

  • Study of Passive Snubbers Applied to a Single-Phase High Power Factor Rectifier
    IEEE Latin America Transactions, 2004
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a family of non-dissipative passive snubbers applied to a Single-Phase Rectifier with unity input power factor. This Single-Phase Rectifier presents reduced conduction losses because the current flows through two power semiconductors only, for any stage of operation. The family of lossless passive snubbers presented in this paper guarantees soft-commutation during the turn-on and the turn-off intervals of the switch within a large range of variation of the input current. The snubber circuit not only should slow the di/dt and dv/dt rates of the active switch, but also losslessly recover the energy stored in the zero-current inductor and in the zero-voltage capacitor, leading to reduced voltage stress across the switches and diodes. The association of the family of high performance snubber circuits here presented with the Single-Phase Rectifier with reduced conduction losses results in a high efficiency Rectifier, free from overvoltages across the power switches. To access the performance of the proposed family, simulation and experimental results for a Single-Phase Rectifier 3000W laboratory prototype using one snubber of the family are also presented.

  • Unit power factor Single-Phase Rectifier with reduced conduction loss using a non-dissipative passive snubber
    2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692), 2003
    Co-Authors: F.k.a. Lima, C.m.t. Cruz
    Abstract:

    This paper presents a Single-Phase Rectifier with low conduction losses. To have a further reduction in the Rectifier losses, a passive non- dissipative snubber is included in the Rectifier. The snubber allows non-dissipative commutation at the switches within a large range of the input current. The snubber reduces the rate of the current grow during the switch turn on and also the rate of voltage grow during the switch turn off. The performance of the snubber circuit associated with the low conduction losses results in a Rectifier with high efficiency. The design of a three KW Rectifier is also presented and simulation results are shown to access the performance of the proposed Rectifier.

  • Unit power factor Single-Phase Rectifier with reduced conduction loss using a nondissipative passive snubber
    IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2002
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a Single-Phase Rectifier with low conduction losses. To have a further reduction in the Rectifier losses, a passive nondissipative snubber is included in the Rectifier. The snubber allows nondissipative commutation at the switches within a large range of the input current. The snubber reduces the rate of the current growth during the switch turn on and also the rate of voltage grow during the switch turn off. The performance of the snubber circuit associated with the low conduction losses results in a Rectifier with high efficiency. It is also presented the design of a three kW Rectifier and simulation results are shown to access the performance of the proposed Rectifier.

F.k.a. Lima - One of the best experts on this subject based on the ideXlab platform.

  • A family of turn-on and turn-off nondissipative passive snubbers for soft-switching Single-Phase Rectifier with reduced conduction losses
    2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a family of nondissipative passive snubbers applied to the Single-Phase Rectifier with reduced conduction losses, for applications in power supply for telecommunication and UPS. The family of lossless passive snubbers presented in this paper guarantees soft-commutation during the turn-on and the turn-off intervals of the switch. The snubber not only should slow the di/dt and dv/dt rates of the active switch, but also losslessly recover the energy stored in the zero-current inductor and in the zero-voltage capacitor, leading to reduced voltage stress across the switch and diodes. A methodology to generate the family of passive snubbers for the Single-Phase Rectifier with reduced conduction losses is also presented. Simulation and experimental results for a Single-Phase Rectifier 3000 W laboratory prototype using one snubber of the family are also presented.

  • Study of Passive Snubbers Applied to a Single-Phase High Power Factor Rectifier
    IEEE Latin America Transactions, 2004
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a family of non-dissipative passive snubbers applied to a Single-Phase Rectifier with unity input power factor. This Single-Phase Rectifier presents reduced conduction losses because the current flows through two power semiconductors only, for any stage of operation. The family of lossless passive snubbers presented in this paper guarantees soft-commutation during the turn-on and the turn-off intervals of the switch within a large range of variation of the input current. The snubber circuit not only should slow the di/dt and dv/dt rates of the active switch, but also losslessly recover the energy stored in the zero-current inductor and in the zero-voltage capacitor, leading to reduced voltage stress across the switches and diodes. The association of the family of high performance snubber circuits here presented with the Single-Phase Rectifier with reduced conduction losses results in a high efficiency Rectifier, free from overvoltages across the power switches. To access the performance of the proposed family, simulation and experimental results for a Single-Phase Rectifier 3000W laboratory prototype using one snubber of the family are also presented.

  • Unit power factor Single-Phase Rectifier with reduced conduction loss using a non-dissipative passive snubber
    2003 IEEE International Symposium on Industrial Electronics ( Cat. No.03TH8692), 2003
    Co-Authors: F.k.a. Lima, C.m.t. Cruz
    Abstract:

    This paper presents a Single-Phase Rectifier with low conduction losses. To have a further reduction in the Rectifier losses, a passive non- dissipative snubber is included in the Rectifier. The snubber allows non-dissipative commutation at the switches within a large range of the input current. The snubber reduces the rate of the current grow during the switch turn on and also the rate of voltage grow during the switch turn off. The performance of the snubber circuit associated with the low conduction losses results in a Rectifier with high efficiency. The design of a three KW Rectifier is also presented and simulation results are shown to access the performance of the proposed Rectifier.

  • Unit power factor Single-Phase Rectifier with reduced conduction loss using a nondissipative passive snubber
    IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2002
    Co-Authors: F.k.a. Lima, C.m.t. Cruz, F.l.m. Antunes
    Abstract:

    This paper presents a Single-Phase Rectifier with low conduction losses. To have a further reduction in the Rectifier losses, a passive nondissipative snubber is included in the Rectifier. The snubber allows nondissipative commutation at the switches within a large range of the input current. The snubber reduces the rate of the current growth during the switch turn on and also the rate of voltage grow during the switch turn off. The performance of the snubber circuit associated with the low conduction losses results in a Rectifier with high efficiency. It is also presented the design of a three kW Rectifier and simulation results are shown to access the performance of the proposed Rectifier.

Sinan Li - One of the best experts on this subject based on the ideXlab platform.

  • Design Considerations for Voltage Sensorless Control of a PFC Single-Phase Rectifier Without Electrolytic Capacitors
    IEEE Transactions on Industrial Electronics, 2020
    Co-Authors: Wenlong Qi, Sinan Li
    Abstract:

    In this paper, a voltage sensorless controller is developed for a two-switch Single-Phase Rectifier that involves power factor correction and active pulsating power buffering without electrolytic capacitors. While a two-switch Rectifier normally requires four sensed signals for control, only one current sensor is required in this proposal, thereby offering advantages such as low cost, high compactness, isolation between control and power circuits, and improved reliability. While the basic operating principle follows that of a conventional voltage sensorless controller for single-switch converters, several critical design considerations are the key to the success of the implementation which is explained in detail. The feasibilities of the controller are experimentally testified with a 100-W Rectifier prototype regarding both steady state and dynamic performance.

  • Minimum Active Switch Requirements for Single-Phase PFC Rectifiers Without Electrolytic Capacitors
    IEEE Transactions on Power Electronics, 2019
    Co-Authors: Sinan Li, Wenlong Qi, Jiayang Wu
    Abstract:

    Active pulsating power buffering (PPB) function can effectively reduce the twice-line frequency energy storage requirement in a Single-Phase Rectifier. Existing Single-Phase solutions with active PPB must utilize more than two active switches in their circuits. Compared with conventional single-active-switch solutions without active PPB (e.g., a boost power-factor-correction (PFC) Rectifier), the cost of additional semiconductor switches and gate drive circuitry in an active PPB-based Rectifier may not be justified for low-power applications. This paper presents a family of single-switch Single-Phase Rectifier with active PPB. Taking advantage of the on-time and off-time of a single switch, the proposed Rectifiers are formulated by merging two converters that are duty and frequency controlled. The steady-state characteristics of these converters are analyzed. A step-by-step design procedure is provided, and an active control method for limiting the maximum switching frequency for wide-load-range operation is presented. A 100-W prototype is built for the demonstration of the proposed single-switch Rectifier concept. It is envisaged that this concept, when combined with other circuit formulation techniques, e.g., partial power processing, dc-voltage feedback, may lead to new derivatives of single-switch Rectifiers with more advanced features.

Thomas G Habetler - One of the best experts on this subject based on the ideXlab platform.

  • an open switch fault diagnosis method for single phase pwm Rectifier using a model based approach in high speed railway electrical traction drive system
    IEEE Transactions on Power Electronics, 2016
    Co-Authors: Xinglai Ge, Shunliang Wang, Xiaoyun Feng, Thomas G Habetler
    Abstract:

    The converter with a Single-Phase Rectifier, a dc-link circuit and a three-phase inverter is widely applied in high-speed railway electrical traction drive system. The fault frequency of Single-Phase Rectifier is higher than that of three-phase inverter. Thus, this paper presents a new and fast model-based approach for open-switch fault diagnosis of the Single-Phase pulse width modulation Rectifier, based on the mixed logical dynamic model and residual generation. It requires no additional hardware but only some measurements and command signals which are available in control system. This diagnosis method is quite suitable for electrical traction application due to the fast diagnosis time, simple structure and high reliability. Experimental results confirm the effectiveness and accuracy of the proposed algorithm. It is shown that such diagnosis method can locate the faulty switch in a few milliseconds which is important to avoid catastrophic consequences.