Novel Maximum Power Point Tracking Strategies for Electronically-Tuned Linear Alternators

Min Zhang; Matteo Iacchetti; Roger Shuttleworth

Novel Maximum Power Point Tracking Strategies for Electronically-Tuned Linear Alternators

Min Zhang, Matteo Iacchetti, Roger Shuttleworth

Research output: Contribution to conference › Paper › peer-review

Abstract

Linear alternators (LAs) are widely applied in many energy
conversion systems based on pressure waves, to avoid linear
to rotary conversion mechanisms. The control of the LA is the
key element to maximize the system’s electric power and
efficiency. However, the LA resonant frequency cannot be
accurately controlled by mechanical design due to parameter
tolerance. Furthermore, the operating frequency is generally
not strictly constant in real-time, making maximum power
point tracking (MPPT) hard to achieve. Two MPPT strategies
are proposed in this paper to adjust the electronic stiffness
amount in real-time. They are hereafter referred to as
symmetrical signal injection method and electronic stiffness
perturbation method. The latter one is selected and validated
via simulation studies.

Original language	English
Publication status	Published - 17 Apr 2018
Event	The 9th International Conference on Power Electronics, Machines and Drives - Liverpool ACC, Liverpool, United Kingdom Duration: 17 Apr 2018 → 19 Apr 2018 Conference number: 9th

Conference

Conference	The 9th International Conference on Power Electronics, Machines and Drives
Abbreviated title	PEMD 2018
Country/Territory	United Kingdom
City	Liverpool
Period	17/04/18 → 19/04/18

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Novel maximum power point tarcking strategies for electronically-tuned linear alternators
Accepted author manuscript, 1.04 MB
Embargo ends: 1/05/26

Cite this

@conference{846dc5f99c684596b8990e3466c25660,

title = "Novel Maximum Power Point Tracking Strategies for Electronically-Tuned Linear Alternators",

abstract = "Linear alternators (LAs) are widely applied in many energyconversion systems based on pressure waves, to avoid linearto rotary conversion mechanisms. The control of the LA is thekey element to maximize the system{\textquoteright}s electric power andefficiency. However, the LA resonant frequency cannot beaccurately controlled by mechanical design due to parametertolerance. Furthermore, the operating frequency is generallynot strictly constant in real-time, making maximum powerpoint tracking (MPPT) hard to achieve. Two MPPT strategiesare proposed in this paper to adjust the electronic stiffnessamount in real-time. They are hereafter referred to assymmetrical signal injection method and electronic stiffnessperturbation method. The latter one is selected and validatedvia simulation studies. ",

author = "Min Zhang and Matteo Iacchetti and Roger Shuttleworth",

year = "2018",

month = apr,

day = "17",

language = "English",

note = "The 9th International Conference on Power Electronics, Machines and Drives, PEMD 2018 ; Conference date: 17-04-2018 Through 19-04-2018",

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TY - CONF

T1 - Novel Maximum Power Point Tracking Strategies for Electronically-Tuned Linear Alternators

AU - Zhang, Min

AU - Iacchetti, Matteo

AU - Shuttleworth, Roger

N1 - Conference code: 9th

PY - 2018/4/17

Y1 - 2018/4/17

N2 - Linear alternators (LAs) are widely applied in many energyconversion systems based on pressure waves, to avoid linearto rotary conversion mechanisms. The control of the LA is thekey element to maximize the system’s electric power andefficiency. However, the LA resonant frequency cannot beaccurately controlled by mechanical design due to parametertolerance. Furthermore, the operating frequency is generallynot strictly constant in real-time, making maximum powerpoint tracking (MPPT) hard to achieve. Two MPPT strategiesare proposed in this paper to adjust the electronic stiffnessamount in real-time. They are hereafter referred to assymmetrical signal injection method and electronic stiffnessperturbation method. The latter one is selected and validatedvia simulation studies.

AB - Linear alternators (LAs) are widely applied in many energyconversion systems based on pressure waves, to avoid linearto rotary conversion mechanisms. The control of the LA is thekey element to maximize the system’s electric power andefficiency. However, the LA resonant frequency cannot beaccurately controlled by mechanical design due to parametertolerance. Furthermore, the operating frequency is generallynot strictly constant in real-time, making maximum powerpoint tracking (MPPT) hard to achieve. Two MPPT strategiesare proposed in this paper to adjust the electronic stiffnessamount in real-time. They are hereafter referred to assymmetrical signal injection method and electronic stiffnessperturbation method. The latter one is selected and validatedvia simulation studies.

M3 - Paper

T2 - The 9th International Conference on Power Electronics, Machines and Drives

Y2 - 17 April 2018 through 19 April 2018

ER -

Novel Maximum Power Point Tracking Strategies for Electronically-Tuned Linear Alternators

Abstract

Conference

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