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Granular Power Conversion with Distr...

Wang, Ping.

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Granular Power Conversion with Distributed Switching Cells and Magnetics Integration.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Granular Power Conversion with Distributed Switching Cells and Magnetics Integration./
作者:	Wang, Ping.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
面頁冊數:	286 p.
附註:	Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
Contained By:	Dissertations Abstracts International84-12B.
標題:	Electrical engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30419822
ISBN:	9798379716929

Granular Power Conversion with Distributed Switching Cells and Magnetics Integration.
Wang, Ping.

Granular Power Conversion with Distributed Switching Cells and Magnetics Integration. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 286 p.

Source: Dissertations Abstracts International, Volume: 84-12, Section: B.

Thesis (Ph.D.)--Princeton University, 2023.

This item must not be sold to any third party vendors.

Power electronics is the backbone of future energy systems including data centers, electric vehicles, and grid-scale energy storage. These high-impact applications demand increased efficiency, density, and reliability in power conversion. To leverage the advances in semiconductor devices and the scaling laws of passive components, a promising trend is to adopt granular power architecture with magnetics integration for minimized power conversion stress and maximized component utilization.In pursuit of this vision, this thesis first develops a systematic approach to all-in-one magnetics integration through matrix coupling. The benefits of matrix coupling in size reduction, ripple compression, and transient acceleration are quantified. A matrix coupled SEPIC prototype is designed and built. It can support load current up to 185 A at 5-to-1-V voltage conversion with over 470 W/in3 power density. Compared to commercial discrete inductors, the matrix coupled inductor has a 5.6 times smaller size and 8.5 times faster transient speed with similar current ripples and ratings.Next, a multistack switched-capacitor point-of-load (MSC-PoL) architecture is presented to power high current computing systems with high efficiency and ultra-compact size. Benefiting from granular architecture, coupled magnetics, and soft-charging technique, the MSC-PoL architecture can reduce current ripple, boost transient speed, reduce charge sharing loss, and enable the self-balancing of granular switching cells. A 48-to-1-V/450-A voltage regulator containing two MSC-PoL modules is fabricated and tested. The prototype is enclosed into a 1/16-brick/0.31-in3/6-mm-thick package with 724 W/in3 power density, enabling ultra-compact power-supply-in-package (PwrSiP) voltage regulation for extreme efficiency, density, and control/communication bandwidth.Finally, a multiport ac-coupled differential power processing (MAC-DPP) architecture is introduced to support large-scale energy systems with ultra-high system efficiency (>99%). The proposed MAC-DPP architecture associates all granular switching ports through a series coupled multi-winding transformer, featuring reduced component count, smaller magnetic volume, and fewer differential power conversion stages compared to other DPP solutions. A stochastic loss model is developed to explore DPP performance scaling limits. A 10-port 450 W MAC-DPP prototype with over 700 W/in3 power density is built and tested on a 50-HDD storage server. It achieves 99.77% system efficiency, completing the first demonstration of a DPP-powered data storage server with full reading, writing, and hot-swapping capabilities. The exploration of software, hardware, and power architecture co-design yields valuable insights for designing next-generation power architectures in data centers.The matrix coupling theory, the MSC-PoL architecture, and the systematic DPP analysis advance the fundamentals of granular power electronics and pave the way toward high-performance power conversion systems for a wider range of applications.

ISBN: 9798379716929Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

Data center power supply

Granular Power Conversion with Distributed Switching Cells and Magnetics Integration.
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500 $a Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
500 $a Advisor: Chen, Minjie.
502 $a Thesis (Ph.D.)--Princeton University, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Power electronics is the backbone of future energy systems including data centers, electric vehicles, and grid-scale energy storage. These high-impact applications demand increased efficiency, density, and reliability in power conversion. To leverage the advances in semiconductor devices and the scaling laws of passive components, a promising trend is to adopt granular power architecture with magnetics integration for minimized power conversion stress and maximized component utilization.In pursuit of this vision, this thesis first develops a systematic approach to all-in-one magnetics integration through matrix coupling. The benefits of matrix coupling in size reduction, ripple compression, and transient acceleration are quantified. A matrix coupled SEPIC prototype is designed and built. It can support load current up to 185 A at 5-to-1-V voltage conversion with over 470 W/in3 power density. Compared to commercial discrete inductors, the matrix coupled inductor has a 5.6 times smaller size and 8.5 times faster transient speed with similar current ripples and ratings.Next, a multistack switched-capacitor point-of-load (MSC-PoL) architecture is presented to power high current computing systems with high efficiency and ultra-compact size. Benefiting from granular architecture, coupled magnetics, and soft-charging technique, the MSC-PoL architecture can reduce current ripple, boost transient speed, reduce charge sharing loss, and enable the self-balancing of granular switching cells. A 48-to-1-V/450-A voltage regulator containing two MSC-PoL modules is fabricated and tested. The prototype is enclosed into a 1/16-brick/0.31-in3/6-mm-thick package with 724 W/in3 power density, enabling ultra-compact power-supply-in-package (PwrSiP) voltage regulation for extreme efficiency, density, and control/communication bandwidth.Finally, a multiport ac-coupled differential power processing (MAC-DPP) architecture is introduced to support large-scale energy systems with ultra-high system efficiency (>99%). The proposed MAC-DPP architecture associates all granular switching ports through a series coupled multi-winding transformer, featuring reduced component count, smaller magnetic volume, and fewer differential power conversion stages compared to other DPP solutions. A stochastic loss model is developed to explore DPP performance scaling limits. A 10-port 450 W MAC-DPP prototype with over 700 W/in3 power density is built and tested on a 50-HDD storage server. It achieves 99.77% system efficiency, completing the first demonstration of a DPP-powered data storage server with full reading, writing, and hot-swapping capabilities. The exploration of software, hardware, and power architecture co-design yields valuable insights for designing next-generation power architectures in data centers.The matrix coupling theory, the MSC-PoL architecture, and the systematic DPP analysis advance the fundamentals of granular power electronics and pave the way toward high-performance power conversion systems for a wider range of applications.
590 $a School code: 0181.
650 4 $a Electrical engineering. $3 649834
650 4 $a Computer engineering. $3 621879
650 4 $a Energy. $3 876794
653 $a Data center power supply
653 $a Granular power conversion
653 $a High-performance microprocessor
653 $a Integrated magnetics
653 $a Matrix coupling
653 $a Power electronics
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