EPE Association: EPE 2005: Other Documents

EPE 2005: Other Documents - Keynotes
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   Keynote 1: The State-of-the-Art of Active Filters for Power Conditioning
By Hirofumi Akagi [View]
[Download]

Abstract: Unlike traditional passive filters, active filters for power conditioning have multiple functions such as harmonic filtering / damping / isolation / termination, load balancing, reactive-power control for power factor correction and voltage regulation, voltage-flicker reduction, or their combinations. Significant cost reductions in both power semiconductor devices and signal-processing devices have inspired many manufactures in Japan, Eu- rope and the United States to put active filters on the market. This paper deals with active filters for power conditioning, and specifically hybrid active filters for harmonic filtering of three-phase diode rectifiers.

   Keynote 2: Improved Passive Filter Configurations for High-Frequency Conducted EMI in Power Electronics
By Shuo Wang; Rengang Chen; Fred C. Lee; J. D. van Wyk [View]
[Download]

Abstract: EMI filter design is critical for power electronics equipment to be in compliance with the EMI/EMC standards. A good filter design realizes effective high frequency attenuation. Such a design is often achieved empirically, with good common sense, and deemed, by and large, as an art rather than a science. It is well known that the filter parasitics are detrimental to its ability to attenuate high frequency noise. In this paper, the critical effects of parasitics, including component self-parasitics and their respective mutual coupling effects, are first identified and their impact to both differential and common mode noise are quantified. Filter design techniques are proposed to mitigate these adverse effects due to self and mutual parasitics. While reduction of certain critical parasitics such as, ESL of filter capacitors and certain mutual couplings can be realized relatively easily in the conventional discrete filter design practice, reduction of the winding capacitance of the common-mode/differential mode inductor can best be implemented in an integrated filter design. Methods of reducing structural parasitics are investigated in this integrated filter design approach and a design technique proposed for canceling the winding capacitance of inductors that results in significant improvement of CM noise attenuation. A unique class of integrated distributed interconnect EMI filter is introduced. Experimental results are provided to substantiate all the claims made in the paper.

   Keynote 3: Power Converters for Particle Accelerators
By Frédérick BORDRY [View]
[Download]

Abstract: In 1905 Albert Einstein wrote his legendary articles which provided the basis for three fundamental fields in physics: the theory of special relativity, quantum theory and the theory of Brownian motion. Subsequently, particle physics made dramatic progress in the understanding of the fundamental forces and particles, and underlying symmetries of nature. These achievements were based on intensive interaction between the development of powerful theories, experimental discoveries and precision measurements with particle accelerators. Power converters play a crucial role in accelerators and the evolution of power electronics is one of the important ingredients that has allowed the attainable energy to be increased by a large factor every decade. This exponential growth has enabled physicists to resolve ever smaller objects and to produce ever heavier particles. For every new generation of accelerators, improvements in beam quality impose new and more severe requirements on power converter performance. In response, a more diverse set of converter ratings and topologies are necessary; from watts to megawatts and from pulsed to DC. This paper highlights specific power converter applications that illustrate the evolution of power electronics used in particle accelerators. It also presents the future challenges facing the power electronics community in response to the demands of the particle physicists.

   Keynote 4: Seamless integration of Renewable Energies into the Electrical Supply System
By Wolfgang Schröppel [View]
[Download]

Abstract: The power supply system was characterized over decades by 4 sources of primary energy: water, coal, oil and nuclear. In the eighties gas was added as another important source. Hence the power generation relied on fossil energies, traditional water and nuclear in form of the fission technology. On this basis the generation-, transmission and distribution systems were build up stable and secure with enough reserve for the case, that one or even more component failed.

EPE 2005: Other Documents - Keynotes
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005: Other Documents > EPE 2005: Other Documents - Keynotes
	[return to parent folder]

	Keynote 1: The State-of-the-Art of Active Filters for Power Conditioning By Hirofumi Akagi	[View] [Download]
Abstract: Unlike traditional passive filters, active filters for power conditioning have multiple functions such as harmonic filtering / damping / isolation / termination, load balancing, reactive-power control for power factor correction and voltage regulation, voltage-flicker reduction, or their combinations. Significant cost reductions in both power semiconductor devices and signal-processing devices have inspired many manufactures in Japan, Eu- rope and the United States to put active filters on the market. This paper deals with active filters for power conditioning, and specifically hybrid active filters for harmonic filtering of three-phase diode rectifiers.

	Keynote 2: Improved Passive Filter Configurations for High-Frequency Conducted EMI in Power Electronics By Shuo Wang; Rengang Chen; Fred C. Lee; J. D. van Wyk	[View] [Download]
Abstract: EMI filter design is critical for power electronics equipment to be in compliance with the EMI/EMC standards. A good filter design realizes effective high frequency attenuation. Such a design is often achieved empirically, with good common sense, and deemed, by and large, as an art rather than a science. It is well known that the filter parasitics are detrimental to its ability to attenuate high frequency noise. In this paper, the critical effects of parasitics, including component self-parasitics and their respective mutual coupling effects, are first identified and their impact to both differential and common mode noise are quantified. Filter design techniques are proposed to mitigate these adverse effects due to self and mutual parasitics. While reduction of certain critical parasitics such as, ESL of filter capacitors and certain mutual couplings can be realized relatively easily in the conventional discrete filter design practice, reduction of the winding capacitance of the common-mode/differential mode inductor can best be implemented in an integrated filter design. Methods of reducing structural parasitics are investigated in this integrated filter design approach and a design technique proposed for canceling the winding capacitance of inductors that results in significant improvement of CM noise attenuation. A unique class of integrated distributed interconnect EMI filter is introduced. Experimental results are provided to substantiate all the claims made in the paper.

	Keynote 3: Power Converters for Particle Accelerators By Frédérick BORDRY	[View] [Download]
Abstract: In 1905 Albert Einstein wrote his legendary articles which provided the basis for three fundamental fields in physics: the theory of special relativity, quantum theory and the theory of Brownian motion. Subsequently, particle physics made dramatic progress in the understanding of the fundamental forces and particles, and underlying symmetries of nature. These achievements were based on intensive interaction between the development of powerful theories, experimental discoveries and precision measurements with particle accelerators. Power converters play a crucial role in accelerators and the evolution of power electronics is one of the important ingredients that has allowed the attainable energy to be increased by a large factor every decade. This exponential growth has enabled physicists to resolve ever smaller objects and to produce ever heavier particles. For every new generation of accelerators, improvements in beam quality impose new and more severe requirements on power converter performance. In response, a more diverse set of converter ratings and topologies are necessary; from watts to megawatts and from pulsed to DC. This paper highlights specific power converter applications that illustrate the evolution of power electronics used in particle accelerators. It also presents the future challenges facing the power electronics community in response to the demands of the particle physicists.

	Keynote 4: Seamless integration of Renewable Energies into the Electrical Supply System By Wolfgang Schröppel	[View] [Download]
Abstract: The power supply system was characterized over decades by 4 sources of primary energy: water, coal, oil and nuclear. In the eighties gas was added as another important source. Hence the power generation relied on fossil energies, traditional water and nuclear in form of the fission technology. On this basis the generation-, transmission and distribution systems were build up stable and secure with enough reserve for the case, that one or even more component failed.