2005 IEEE 36th Power Electronic Specialists Conference

rozdział

Development of Standards for Interconnecting Distributed Generators with Electric Power Systems

Liuchen Chang, C. Diduch, Pinggang Song

2005 IEEE 36th Power Electronics Specialists Conference > 2501 - 2507

The need for interconnecting distributed generators or DG's with electric power systems has raised a number of technical issues that has resulted in the development of new interconnection standards. The paper summarizes the most important requirements and issues as these relate to existing DG interconnection standards and guidelines in a worldwide context. The requirements may be classified as: general...

rozdział

Enhancement of Carrier-Based Modulation Strategies for Multilevel Converters

J. Pou, P. Rodriguez, J. Zaragoza, V. Sala, więcej

2005 IEEE 36th Power Electronics Specialists Conference > 2534 - 2539

2005 IEEE 36th Power Electronic Specialists Conference

Carrier-based modulation strategies can be improved by inclusion of zero sequences in the modulation signals. In this paper, the modulation signals of a three-level neutral-point-clamped converter are modified to achieve maximum benefit of the DC-link voltage, and to help achieve voltage balance between the DC-link capacitors. The proposed strategy is obtained from the analysis of space-vector modulation...

rozdział

Extended DQ Transformation for Vectorial Control Applications of Non-sinusoidal Permanent Magnet AC Machines

A.A. Oliveira, J.R.B.A. Monteiro, M.L. Aguiar, D.P. Gonzaga

2005 IEEE 36th Power Electronics Specialists Conference > 1807 - 1812

2005 IEEE 36th Power Electronic Specialists Conference

This paper presents an extended dq transformation model of non-sinusoidal permanent magnet synchronous machines (SM-PMSM). This transformation permits to obtain a simpler electromagnetic torque equation for this type of machine. The resultant electromagnetic torque equation obtained from this model is directly proportional to the machine quadrature stator current. Initially, the three-phase equations...

rozdział

A PWM Family of ZVT Self-resonant Converters with Improved Features

P.J.M. Menegaz, J.L.F. Vieira, J.A. Bruinsma, J.P. Rey, więcej

2005 IEEE 36th Power Electronics Specialists Conference > 1198 - 1202

2005 IEEE 36th Power Electronic Specialists Conference

This paper presents a PWM family of ZVT self-resonant converters that use a magnetic coupling to accomplish the minimum total losses point of the auxiliary switch. Their great advantage is the overall size reduction, because allows to reduce the auxiliary switch heatsink as well as the number of magnetic components of the circuit, once the auxiliary inductor is incorporated into the main one. This...

rozdział

Boundary Control of Inverters Using Second-Order Switching Surface

K.K.S. Leung, J.Y.C. Chiu, H.S.H. Chung

2005 IEEE 36th Power Electronics Specialists Conference > 936 - 942

2005 IEEE 36th Power Electronic Specialists Conference

Concept of using a second-order switching surface in the boundary control of inverters is derived in this paper. The switching surface is formulated by estimating the state trajectory movement after a switching action. It results in a high state trajectory velocity along the switching surface. This phenomenon accelerates the trajectory moving towards the target operating point. Time-domain responses...

rozdział

Analysis of the Current-Fed Push-Pull Parallel Resonant Inverter Implemented with Unidirectional Switches

M.M. Peretz, S. Ben-Yaakov

2005 IEEE 36th Power Electronics Specialists Conference > 880 - 884

2005 IEEE 36th Power Electronic Specialists Conference

A modified current-fed push-pull parallel resonant inverter (CFPPRI), that includes diodes in series with the switches, was analyzed and tested by simulation and experimentally. The modified power source is capable of producing a low THD output voltage within a relatively wide frequency range. A comparison between the modified topology and the basic CFPPRI, in terms of output signal quality and efficiency...

rozdział

Control of Autonomous Oscillations in Buck-Based Inverters

M.S. Kaster, D.J. Pagano

2005 IEEE 36th Power Electronics Specialists Conference > 899 - 903

2005 IEEE 36th Power Electronic Specialists Conference

A new sliding-mode control scheme for the generation of autonomous oscillations in a single-phase buck-based inverter is presented. The proposed control scheme is based on an energy shaping approach and no external sinusoidal reference signal is required. Simulation and experimental results obtained considering a nonlinear load are presented

rozdział

Automated Digital Controller Design for Switching Converters

B. Miao, R. Zane, D. Maksimovic

2005 IEEE 36th Power Electronics Specialists Conference > 2729 - 2735

2005 IEEE 36th Power Electronic Specialists Conference

This paper presents an approach to automated digital controller design for switching power converters. Starting from an experimentally identified frequency response, parameters of the converter transfer function are estimated using a least logarithmic squares method. A direct digital design method then yields a compensator that results in the desired closed loop response. Application of the method...

rozdział

A New Three Phase Full-bridge C-dump Converter Applied to Switched Reluctance Motor Drives

W.M. da Silva, C. Goldemberg, A. Van den Bossche

2005 IEEE 36th Power Electronics Specialists Conference > 2684 - 2690

2005 IEEE 36th Power Electronic Specialists Conference

This paper presents new "C-dump" topologies for switched reluctance motor drives: the "full-bridge C-dump converter" with and without the equalization leg. The increase in the number of switches is acceptable since a standard full bridge transistor module is used. The paper also shows the commutation and control strategy applied to these topologies. These topologies can be used...

rozdział

New Bus Structure for Programmable Logic Devices Controlling Power Electronics

K. Rauma, O. Laakkonen, T. Harkonen, J. Luukko, więcej

2005 IEEE 36th Power Electronics Specialists Conference > 2705 - 2708

2005 IEEE 36th Power Electronic Specialists Conference

Development of PLDs (programmable logic device) like large FPGA (field programmable gate array) circuits allow those to be used as modern control platforms for power electronics. The increase of the computational power makes it possible to implement a whole control system inside one chip. This single chip solution needs efficient design methodology to be developed for system implementation. In this...

rozdział

Current Sharing in Digitally Controlled Masterless Multi-phase DC-DC Converters

Yang Zhang, R. Zane, D. Maksimovic

2005 IEEE 36th Power Electronics Specialists Conference > 2722 - 2728

2005 IEEE 36th Power Electronic Specialists Conference

This paper introduces modular masterless multi-phase architecture based on identical digitally controlled DC-DC converter modules that communicate over a digital bus. Advantages of the masterless architecture include simpler system configuration and development, and scalability to an arbitrary number of phases. Technical challenges are to facilitate proper phasing, control and current sharing functions,...

rozdział

A Boost Converter With Voltage Multiplier Cells

M. Prudente, L.L. Pfitscher, R. Gules

2005 IEEE 36th Power Electronics Specialists Conference > 2716 - 2721

2005 IEEE 36th Power Electronic Specialists Conference

This paper introduces the use of the voltage multiplier technique applied to the classical non-isolated DC-DC converters. The major benefits obtained with the integration of voltage multipliers with classical converters are the operation with high static gain, reduction of the maximum switch voltage, zero current switch turn-on and minimization of the effects of the reverse recovery current of all...

rozdział

A Repetitive-based Controller to Compensate for Harmonic Distortion in the Output Voltage of a Boost Converter

G. Escobar, J. Leyva-Ramos, P.R. Martinez, A.A. Valdez, więcej

2005 IEEE 36th Power Electronics Specialists Conference > 2709 - 2715

2005 IEEE 36th Power Electronic Specialists Conference

A novel repetitive based-control strategy is proposed for the pulse width modulated (PWM) boost converter to compensate the output voltage ripple due to the harmonic distortion present in the input voltage. Repetitive control has shown to be a useful tool for tracking of periodic reference signals and for compensation of periodic disturbances, in other words, for harmonic compensation. The structure...

rozdział

Dual-Source Fed Multi-phase Induction Motor Drive for Fuel Cell Vehicles: Topology and Control

R. Bojoi, A. Tenconi, F. Farina, F. Profumo

2005 IEEE 36th Power Electronics Specialists Conference > 2676 - 2683

2005 IEEE 36th Power Electronic Specialists Conference

The paper introduces a new multi-source fed drive topology based on a multi-phase induction machine. The reference application is the hybrid fuel cell (FC) traction system (fuel cell and battery). The FC power and the battery power are directly added at the machine level, without any additional DC-DC converters. The proposed drive topology uses two three-phase inverters having different DC link voltages...

rozdział

Combining Induction and Permanent Magnet Synchronous Machines in a Series-Connected Six-Phase Vector-Controlled Two-Motor Drive

M. Jones, S.N. Vukosavic, E. Levi

2005 IEEE 36th Power Electronics Specialists Conference > 2691 - 2697

2005 IEEE 36th Power Electronic Specialists Conference

It has been shown recently that a number of multi-phase machines can be controlled independently, with the supply coming from a single multi-phase inverter, provided that the stator windings are connected in series in an appropriate manner. One such drive system is a two-motor drive, consisting of a symmetrical six-phase machine connected in series with a three-phase machine. The supply is provided...

rozdział

A Medium Voltage AC Drive with Parallel Current Source Inverters For High Power Applications

D. Xu, N.R. Zargari, B. Wu, J. Wiseman, więcej

2005 IEEE 36th Power Electronics Specialists Conference > 2277 - 2283

2005 IEEE 36th Power Electronic Specialists Conference

A power circuit topology suitable for large medium voltage AC drive applications is presented. The line side harmonics requirements are met by using an 18 pulse phase-controlled rectifier. The output horsepower of the drive is increased by connecting two inverters in parallel. The low switching frequency used in the inverters makes this approach especially attractive in very high power applications...

rozdział

Development of a 1.5 MW, Seven Level Series-stacked Converter as an APF and Regeneration Converter for a DC Traction Substation

P.H. Henning, H.D. Fuchs, A.D. Le Roux, H.T. Mouton

2005 IEEE 36th Power Electronics Specialists Conference > 2270 - 2276

2005 IEEE 36th Power Electronic Specialists Conference

A prototype 1.5 MW series-stacked converter system was built and installed at a DC-traction substation. The converter inverts energy generated by slowing an electric train using regenerative braking. The regenerated energy is fed into the local AC network at the DC-substation. A secondary function of the converter is to perform active power filtering (APF) while a train is drawing power from the substation...

rozdział

Transformerless Series Dip/Sag Compensation with Ultracapacitors using a new Multilevel Boost DC-to-AC Topology

M. Becker, T. Mouton

2005 IEEE 36th Power Electronics Specialists Conference > 2257 - 2263

2005 IEEE 36th Power Electronic Specialists Conference

Multilevel power converters that provide more than two levels of voltage to achieve smoother and less distorted ac-to-dc, dc-to-ac, and dc-to-dc power conversion, have attracted many contributors. This paper presents a new multilevel topology that can be used in series dip/sag compensators using ultracapacitors. This boost dc-to-ac multilevel topology has self voltage balancing of cells and may be...

rozdział

A Three-Switch Current-Source PWM Rectifier with Active Filter Function

M. Salo

2005 IEEE 36th Power Electronics Specialists Conference > 2230 - 2236

2005 IEEE 36th Power Electronic Specialists Conference

Thyristor and diode converters are widely used in electric power systems. These nonlinear loads produce current harmonics which reduce power quality by distorting the supply network voltages. Nowadays, an increasingly popular trends is to compensate the harmonics by using six-switch active power filters. In this paper the capability of three-switch current-source PWM rectifier (3SW-CSR) to act as...

rozdział

Programmable PFC Based Hybrid Multipulse Power Rectifier for Utility Interface of Power Electronic Converters

L.C.G. de Freitas, E.A.A. Coelho, A.P. Finazzi, M.G. Simoes, więcej

2005 IEEE 36th Power Electronics Specialists Conference > 2237 - 2243

2005 IEEE 36th Power Electronic Specialists Conference

In this paper it is proposed a novel hybrid three-phase rectifier capable to achieve high input power factor (PF), and low total harmonic distortion in the input currents (THD_I). The proposed hybrid high power rectifier is composed by a standard three-phase 6-pulses diode rectifier (Graetz bridge) with a parallel connection of single-phase boost rectifiers in each three-phase rectifier leg. Such topology...

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2005 IEEE 36th Power Electronic Specialists Conference

Development of Standards for Interconnecting Distributed Generators with Electric Power Systems

Enhancement of Carrier-Based Modulation Strategies for Multilevel Converters

Extended DQ Transformation for Vectorial Control Applications of Non-sinusoidal Permanent Magnet AC Machines

A PWM Family of ZVT Self-resonant Converters with Improved Features

Boundary Control of Inverters Using Second-Order Switching Surface

Analysis of the Current-Fed Push-Pull Parallel Resonant Inverter Implemented with Unidirectional Switches

Control of Autonomous Oscillations in Buck-Based Inverters

Automated Digital Controller Design for Switching Converters

A New Three Phase Full-bridge C-dump Converter Applied to Switched Reluctance Motor Drives

New Bus Structure for Programmable Logic Devices Controlling Power Electronics

Current Sharing in Digitally Controlled Masterless Multi-phase DC-DC Converters

A Boost Converter With Voltage Multiplier Cells

A Repetitive-based Controller to Compensate for Harmonic Distortion in the Output Voltage of a Boost Converter

Dual-Source Fed Multi-phase Induction Motor Drive for Fuel Cell Vehicles: Topology and Control

Combining Induction and Permanent Magnet Synchronous Machines in a Series-Connected Six-Phase Vector-Controlled Two-Motor Drive

A Medium Voltage AC Drive with Parallel Current Source Inverters For High Power Applications

Development of a 1.5 MW, Seven Level Series-stacked Converter as an APF and Regeneration Converter for a DC Traction Substation

Transformerless Series Dip/Sag Compensation with Ultracapacitors using a new Multilevel Boost DC-to-AC Topology

A Three-Switch Current-Source PWM Rectifier with Active Filter Function

Programmable PFC Based Hybrid Multipulse Power Rectifier for Utility Interface of Power Electronic Converters

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2005 IEEE 36th Power Electronic Specialists Conference