Explanipedia

The Little Baby Bundle: An evaluation of a pilot scheme in Ireland Open

Rachel Iredale, Rory Geoghegan, Kathryn O’Riordan, Geoffrey R. Walker · 2025

Extracting Key Drivers and Barriers to Pv Adoption in Australian States Based on Installation Size by Bayesian Pearson Correlation Analysis Open

Omid Motamedisedeh, Sara Omrani, Robin Drogemuller, Geoffrey R. Walker · 2025

A comprehensive review of optimum integration of photovoltaic-based energy systems Open

Omid Motamedisedeh, Sara Omrani, Azharul Karim, Robin Drogemuller, Geoffrey R. Walker · 2024

Feed-forward State of Charge estimation of LiFePO batteries using time-series machine learning prediction with autoregressive models Open

Marat Sadykov, Sam Haines, Geoffrey R. Walker, David W. Holmes · 2024

An Experimental Field Comparison of Wi-Fi HaLow and LoRa for the Smart Grid Open

Luke Kane, Vicky Liu, Matthew McKague, Geoffrey R. Walker · 2023

IEEE 802.11ah, or Wi-Fi HaLow, is a long-range Internet of Things (IoT) communication technology with promising performance claims. Being IP-based makes it an attractive prospect when interfacing with existing IP networks. Through real-wor…

Review of multiport modular multilevel converters for residential applications: A control perspective Open

Stephan Adams, Dezső Séra, Geoffrey R. Walker, Mark A. H. Broadmeadow · 2023

Distributed generation and storage systems have become important in the residential building environment. One of the more promising power electronic interfaces between these systems and the grid/building are multiport modular multilevel co…

Practical Evaluation of Lithium-Ion Battery State-of-Charge Estimation Using Time-Series Machine Learning for Electric Vehicles Open

Marat Sadykov, Sam Haines, Mark A. H. Broadmeadow, Geoffrey R. Walker, David W. Holmes · 2023

This paper presents a practical usability investigation of recurrent neural networks (RNNs) to determine the best-suited machine learning method for estimating electric vehicle (EV) batteries’ state of charge. Using models from multiple pu…

Robust Maximum Efficiency Tracking Control of Wirelessly Powered Directly Supplied Heart Pumps Open

Amir Hakemi, Dejan P. Jovanović, D. Mahinda Vilathgamuwa, Geoffrey R. Walker · 2023

In recent times, wireless power transfer systems have been identified as a reliable option to supply power to medical implants. Up to now, Wireless Power Transfer Systems (WPTS) have only been used to charge batteries of low-power medical …

Model Predictive Control Strategy for Residential Battery Energy Storage System in Volatile Electricity Market with Uncertain Daily Cycling Load Open

Dejan P. Jovanović, Gerard Ledwich, Geoffrey R. Walker · 2023

This paper presents a control strategy for residential battery energy storage systems, which is aware of volatile electricity markets and uncertain daily cycling loads. The economic benefits of energy trading for prosumers are achieved thr…

Insect visual sensitivity to long wavelengths enhances colour contrast of insects against vegetation Open

Lu‐Yi Wang, Devi Stuart‐Fox, Geoffrey R. Walker, Nicholas W. Roberts, Amanda M. Franklin · 2022

Electricity Tariff Aware Model Predictive Controller for Customer Battery Storage with Uncertain Daily Cycling Load Open

Dejan P. Jovanović, Gerard Ledwich, Geoffrey R. Walker · 2022

To optimally control the energy storage system of the battery exposed to the volatile daily cycling load and electricity tariffs, a novel modification of a conventional model predictive control is proposed. The uncertainty of daily cycling…

Network Architecture and Authentication Scheme for LoRa 2.4 GHz Smart Homes Open

Luke Kane, Vicky Liu, Matthew McKague, Geoffrey R. Walker · 2022

The IoT-based smart grid provides many benefits to both energy consumers and energy producers, such as advanced metering functions, improved reliability, and management. Increasingly with the rise of smart homes and smart cities, security …

Measurement Sensitivity and Estimation Error in Distribution System State Estimation using Augmented Complex Kalman Filter Open

Alan Louis, Gerard Ledwich, Geoffrey R. Walker, Yateendra Mishra · 2020

Distribution state estimation (DSE) is an essential part of an active distribution network with high level of distributed energy resources. The challenges of accurate DSE with limited measurement data is a well-known problem. In practice, …

DC-Link Quasi-Switched Boost Inverter With Improved PWM Strategy and its Comparative Evaluation Open

Minh‐Khai Nguyen, Truong‐Duy Duong, Young‐Cheol Lim, Joon‐Ho Choi, D. Mahinda Vilathgamuwa , et al. · 2020

Low voltage stress on the impedance source network devices is the main reason for the advent of DC-linked type quasi-switched boost inverters (DqSBIs). However, the DqSBI has become less attractive due to its low voltage gain. This paper p…

Solar Enablement Initiative in Australia: Report on Efficiently Identifying Critical Cases for Evaluating the Voltage Impact of Large PV Investment Open

Mehdi Shafiei, Aaron Liu, Gerard Ledwich, Geoffrey R. Walker, Gian-Marco Morosini , et al. · 2019

The increasing quantity of PV generation connected to distribution networks is creating challenges in maintaining and controlling voltages in those distribution networks. Determining the maximum hosting capacity for new PV installations ba…

Benefit assessment of battery plus solar for customers and the grid Open

Fanny Boulaire, A. Narimani, John Bell, Robin Drogemuller, Desley Vine , et al. · 2019

Reducing voltage fluctuations using DSTATCOMs and reactive power of PV inverters in a medium voltage distribution system Open

Duong Quoc Hung, Yateendra Mishra, Geoffrey R. Walker · 2019

This paper proposes local reactive power control to mitigate the voltage fluctuation in medium‐voltage systems using DSTATCOMs and photovoltaic (PV) inverters. New expressions are developed to estimate voltage fluctuations and reactive pow…

Integration of non‐isolated DC–DC converters in battery storage systems – a topological exploration Open

Razieh Khanaki, Geoffrey R. Walker, Mark A. H. Broadmeadow, Gerard Ledwich · 2019

This paper presents a topological exploration and evaluation of modularised battery systems with integrated non‐isolated DC–DC converters (battery‐integrated‐converters). Converter requirements for battery operation in charging/discharging…

FPGA implementation of an arbitrary resample rate, FOH, pulse width modulator Open

Mark A. H. Broadmeadow, Edward J. Burstinghaus, Geoffrey R. Walker, Gerard Ledwich · 2019

This study presents a field‐programmable gate array implementation of an advanced pulse‐width modulator which combines a first‐order hold (FOH) with phase accumulator carrier pulse‐width modulation (PACPWM) for significantly reduced phase …

Modular and scalable control and data acquisition system for power hardware in the loop (PHIL) amplifiers Open

Mark A. H. Broadmeadow, Geoffrey R. Walker, Gerard Ledwich · 2019

This study presents a newly developed modular system for control of power electronic amplifiers in high‐power, high‐frequency power hardware in the loop experiments. The proposed design comprises computational nodes connected via multi‐gig…

High‐voltage switch‐mode assisted linear amplifier based voltage source for dielectric low frequency‐domain spectroscopy measurements Open

Shawn Nielsen, Geoffrey R. Walker · 2019

This study presents a switch‐mode assisted linear amplifier (SMALA) designed for use as a frequency‐domain spectroscopy (FDS) excitation voltage source for the diagnostic testing of oil/paper insulation systems in large power transformers.…

Synchronisation of a distributed control and data acquisition system for modular multi‐level PHIL amplifiers Open

Kenneth D. Sands, Mark A. H. Broadmeadow, Geoffrey R. Walker · 2019

This research presents a novel technique to synchronise a modular control and data acquisition system for the testing of multi‐level power hardware‐in‐the‐loop (PHIL) amplifiers. The methodology is inspired by the precision timing protocol…

Summary Project Report 2019: Summer saver research program: Qualitative and quantitative phase Open

Rebekah Russell‐Bennett, Kate Letheren, Charmaine Glavas, Ryan McAndrew, Adam Clements , et al. · 2019

This project that was undertaken by the QUT Business School, CitySmart, and the University of the Sunshine Coast, with the assistance of Clemenger BBDO. This report was commissioned by CitySmart on behalf of CitiPower, Powercor, United Ene…

Solar Enablement Initiative in Australia: Report on Efficiently\n Identifying Critical Cases for Evaluating the Voltage Impact of Large PV\n Investment Open

Mehdi Shafiei, Aaron Liu, Gerard Ledwich, Geoffrey R. Walker, Gian-Marco Morosini , et al. · 2018

The increasing quantity of PV generation connected to distribution networks\nis creating challenges in maintaining and controlling voltages in those\ndistribution networks. Determining the maximum hosting capacity for new PV\ninstallations…

Value of Residential Investment in Photovoltaics and Batteries in Networks: A Techno-Economic Analysis Open

Damian Shaw-Williams, Connie Susilawati, Geoffrey R. Walker · 2018

Australia has one of the highest rates of residential photovoltaics penetration in the world. The willingness of households to privately invest in energy infrastructure, and the maturing of battery technology, provides significant scope fo…

Success Stories in Asia’s Quest for Increasing Its Domestic Milk Production Open

John B. Moran, Geoffrey R. Walker, Mohammad Abdus Salam · 2018

Throughout the humid tropics of Asia, smallholder dairy (SHD) farmers have developed their production systems largely based on the "traditional way of doing things".Tradition is a generic word used in this case to mean basing farm manageme…

A modular and scalable control and data acquisition system for power hardware in the loop (PHIL) amplifiers Open

Mark A. H. Broadmeadow, Geoffrey R. Walker, Gerard Ledwich · 2018

This paper presents a newly developed modular system for control of power electronic amplifiers in high-power, high-frequency power hardware in the loop (PHIL) experiments. The proposed design comprises computational nodes connected via mu…

FPGA implementation of an arbitrary resample rate, first order hold (FOH), pulse width modulator Open

Mark A. H. Broadmeadow, Edward J. Burstinghaus, Geoffrey R. Walker, Gerard Ledwich · 2018

This paper presents an FPGA implementation of an advanced pulse width modulator which combines a first order hold (FOH) with phase accumulator carrier pulse width modulation (PACPWM) for significantly reduced phase delay, and bandwidth ext…

Comparing operational value of CSP with TES to PV with battery storage in Australian national electricity market Open

A. Narimani, A.M.A.K. Abeygunawardana, Ghavameddin Nourbakhsh, Gerard Ledwich, Geoffrey R. Walker · 2017

The increasing use of Photovoltaic panels (PVs) in residential areas may likely lead to addition of central electric energy storage (EESs) by retailers for load transfer capabilities. Such arrangement can provide flexibility for grid by sh…

Energy and ancillary services value of CSP with thermal energy storage in the Australian national electricity market Open

A. Narimani, A.M.A.K. Abeygunawardana, Benjamin Khoo, L. Maistry, Gerard Ledwich , et al. · 2017

The dispatchability of concentrated solar power (CSP) with thermal energy storage (TES) offers the ability to provide ancillary services (AS) such as spinning reserve and frequency regulation. In this paper, the energy and ancillary servic…

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