An explicit linearized state-space technique for accelerated simulation of electromagnetic vibration energy harvesters


Kazmierski, Tom, Wang, Leran, Al-Hashimi, Bashir and Merrett, Geoff V. (2011) An explicit linearized state-space technique for accelerated simulation of electromagnetic vibration energy harvesters IEEE Transactions on Computer Aided Design of Integrated Circuits and Systems, 31, (4), pp. 522-531. (doi:10.1109/TCAD.2011.2176124).

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Description/Abstract

Vibration energy harvesting systems pose significant modeling and design challenges due to their mixed-technology nature, extremely low levels of available energy and disparate time scales between different parts of a complete harvester. An energy harvester is a complex system of tightly coupled components modeled in the mechanical, magnetic as well as electrical analog and digital domains. Currently available design tools are inadequate for simulating such systems due to prohibitive CPU times. This paper proposes a new technique to accelerate simulations of complete vibration energy harvesters by approximately two orders of magnitude. The proposed technique is to linearize the state equations of the system's analog components to obtain a fast estimate of the maximum step-size to guarantee the numerical stability of explicit integration based on the Adams-Bashforth formula. We show that the energy harvester's analog electronics can be efficiently and reliably simulated in this way with CPU times two orders of magnitude lower than those obtained from two state-of-the art tools, VHDL-AMS and SystemC-A. As a case study, a practical, complex microgenerator with magnetic tuning and two types of power processing circuits have been simulated using the proposed technique and verified experimentally.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1109/TCAD.2011.2176124
ISSNs: 0278-0070 (print)
Related URLs:
Keywords: Energy harvesting, state-space technique, simulation acceleration, tunable microgenerator, DC-to-DC converter
Organisations: Electronics & Computer Science
ePrint ID: 272972
Date :
Date Event
November 2011Accepted/In Press
April 2012Published
Date Deposited: 01 Nov 2011 15:30
Last Modified: 17 Apr 2017 17:36
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/272972

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