TY - JOUR
T1 - Modulation and Feed-Forward Based Damping Matching Strategy for Linear Generators
AU - Bodrov, Alexey
AU - Shuttleworth, Roger
AU - Iacchetti, Matteo
N1 - Funding Information:
Manuscript received December 7, 2020; revised March 7, 2021; accepted May 6, 2021. Date of publication June 9, 2021; date of current version September 16, 2021. This work was supported by the U.K. Engineering and Physical Sciences Research Council.EPSRC, through Project HARP2: Holistic Approach to the Design of Efficient Heat Recovery Systems for Electrical Power Production, under Grant EP/R02328X/1 Paper 2020-SECSC-0854.R1, presented at the 2020 27th International Workshop on Electric Drives: MPEI Department of Electric Drives 90th Anniversary, Moscow, Russia, Jan. 27–30, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Renewable and Sustainable Energy Conversion Systems Committee of the IEEE Industry Applications Society. (Corresponding author: Matteo Felice Iacchetti.) Alexey Bodrov and Roger Shuttleworth are with the Department of Electrical and Electronic Engineering, The University of Manchester, Manchester M13 9PL, U.K. (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 1972-2012 IEEE.
PY - 2021/9/1
Y1 - 2021/9/1
N2 - This article presents an active damping matching control strategy to optimize the output power of linear generators in energy harvesting applications. The method adjusts the magnitude of the current command responsible for active power set-point. The proposed approach combines a simple model-based feed-forward term with a slow but accurate correction based on the response of output power to a low-frequency modulation in set-point current magnitude. The correction is derived from the phase of output power oscillations and used to adjust the power set-point to achieve active-load matching conditions. In order to remove the low-frequency oscillations in the power at steady state, the method automatically stops the current amplitude modulation when maximum output power is reached. In addition, the proposed control incorporates an overstroke protection, which increases the active current component thereby reducing the stroke rapidly to a safe limit. The overall control principle is validated experimentally.
AB - This article presents an active damping matching control strategy to optimize the output power of linear generators in energy harvesting applications. The method adjusts the magnitude of the current command responsible for active power set-point. The proposed approach combines a simple model-based feed-forward term with a slow but accurate correction based on the response of output power to a low-frequency modulation in set-point current magnitude. The correction is derived from the phase of output power oscillations and used to adjust the power set-point to achieve active-load matching conditions. In order to remove the low-frequency oscillations in the power at steady state, the method automatically stops the current amplitude modulation when maximum output power is reached. In addition, the proposed control incorporates an overstroke protection, which increases the active current component thereby reducing the stroke rapidly to a safe limit. The overall control principle is validated experimentally.
KW - Active damping control
KW - energy harvesting
KW - impedance matching
KW - linear generators (LGs)
KW - maximum power point tracking (MPPT)
KW - thermoacoustic generators
U2 - 10.1109/TIA.2021.3088087
DO - 10.1109/TIA.2021.3088087
M3 - Article
SN - 0093-9994
VL - 57
SP - 5296
EP - 5305
JO - IEEE Transactions on Industry Applications
JF - IEEE Transactions on Industry Applications
IS - 5
M1 - 9449981
ER -
