Improved design and control of brushless doubly-fed reluctance machine generators for wind power applications. The growing importance of the reduction in greenhouse gas emissions over the coming years is driving the increased usage of renewable energy sources such as wind power. Currently the cost of wind energy is considerably higher than fossil fuel energy sources. Part of the reason for this is the initial cost and ongoing maintenance of the wind turbines. The proposed research considers a n ....Improved design and control of brushless doubly-fed reluctance machine generators for wind power applications. The growing importance of the reduction in greenhouse gas emissions over the coming years is driving the increased usage of renewable energy sources such as wind power. Currently the cost of wind energy is considerably higher than fossil fuel energy sources. Part of the reason for this is the initial cost and ongoing maintenance of the wind turbines. The proposed research considers a new kind of generator based on the Brushless Doubly Fed Machine (BDFRM) that has the potential to lower the initial cost of the generator/inverter hardware of the wind turbine, and also decrease the ongoing maintenance costs. If the research is able to show that the BDFRM is able to realise its potential, then this will aid the further use of wind energy.Read moreRead less
Innovative Grid-Connected, Small-Scale Wind Turbine Generators Offering Low Cost and Wide Operating Speed Range. Growing concerns about sustainability issues with fossil fuels have resulted in strong interest in wind power worldwide. Grid-connected inverters are an efficient way of utilising small wind turbines on domestic, farming or small commercial properties which have access to the power grid. Existing small-scale, grid-connected wind turbines are expensive and have a limited operating wind ....Innovative Grid-Connected, Small-Scale Wind Turbine Generators Offering Low Cost and Wide Operating Speed Range. Growing concerns about sustainability issues with fossil fuels have resulted in strong interest in wind power worldwide. Grid-connected inverters are an efficient way of utilising small wind turbines on domestic, farming or small commercial properties which have access to the power grid. Existing small-scale, grid-connected wind turbines are expensive and have a limited operating wind speed range. We are investigating new designs for low-cost wind turbine generators which can produce power over a wide range of wind speeds. The project should result in a greater application of small-scale wind generators in Australia and will lead to reductions in fossil fuel usage and greenhouse gas emissions.Read moreRead less
Improved Capacitor Voltage Balance for Multicell Power Electronic Converters Controlled by Spectrally Optimal Modulation. There is a growing demand for high power and medium voltage energy conversion systems in a wide range of applications, including Rail, Renewable Energy, Defence and Electricity Distribution. Multicell-type multilevel converters are a very attractive means of satisfying this demand, but only if the cell voltages can be precisely regulated so as to ensure protection of the conv ....Improved Capacitor Voltage Balance for Multicell Power Electronic Converters Controlled by Spectrally Optimal Modulation. There is a growing demand for high power and medium voltage energy conversion systems in a wide range of applications, including Rail, Renewable Energy, Defence and Electricity Distribution. Multicell-type multilevel converters are a very attractive means of satisfying this demand, but only if the cell voltages can be precisely regulated so as to ensure protection of the converter while simultaneously ensuring the synthesis of switched waveforms with the required spectral quality. This project offers the potential to eliminate this barrier to the use of Multicell converter technology. In addition this project emphasises the development and training of people skilled in the design and development of this technology.Read moreRead less
Low Loss Distributed Wind Generators with Reduced Electromagnetic Interference and Shaft Voltage Based on Multilevel Converters. Distributed wind generators with minimum electromagnetic interference and bearing spikes are very important for the Australian energy industry because they are an environmentally friendly energy source. Predicting and reducing electromagnetic interferences and mechanical failures in wind farm systems is an important issue especially for the next generation of wind sys ....Low Loss Distributed Wind Generators with Reduced Electromagnetic Interference and Shaft Voltage Based on Multilevel Converters. Distributed wind generators with minimum electromagnetic interference and bearing spikes are very important for the Australian energy industry because they are an environmentally friendly energy source. Predicting and reducing electromagnetic interferences and mechanical failures in wind farm systems is an important issue especially for the next generation of wind systems when fast and advanced power electronic switches can create more EMI noise for both onshore and offshore wind farms. Medium-Voltage Direct Current (MVDC) systems have good performance and low losses, and are of particular interest to states which are close to wind power sources.Read moreRead less
Integration of Solar, Wind and Storage Systems into Distribution Grids for Network Support. This project will contribute to the development and utilisation of renewable energy technologies for a sustainable future and facilitate their integration into electricity grids for network support. Innovative methodologies and technologies will be developed to reduce network problems associated with the integration of a large number of small-scale renewable energy resources into distribution grids. This ....Integration of Solar, Wind and Storage Systems into Distribution Grids for Network Support. This project will contribute to the development and utilisation of renewable energy technologies for a sustainable future and facilitate their integration into electricity grids for network support. Innovative methodologies and technologies will be developed to reduce network problems associated with the integration of a large number of small-scale renewable energy resources into distribution grids. This project will also develop assessment tools to examine the impact of renewable energy penetration on power quality aspects, network stability and protection performance. This research will provide remedies for potential problems introduced by their integration and improve voltage support in the electricity networks. Read moreRead less
CONTROL AND INTERFACING OF GRID-CONNECTED IGBT INVERTERS FOR SMALL-SCALE WIND GENERATORS. The project aims to investigate methods for extracting and converting intermittent energy from variable speed wind generators and supplying to electricity grids. Low cost power conditioning units for integrating small-scale wind generators will be designed, developed and commercialised. It is expected that this project will lead to a systematic design procedure for grid connected inverter technology using ....CONTROL AND INTERFACING OF GRID-CONNECTED IGBT INVERTERS FOR SMALL-SCALE WIND GENERATORS. The project aims to investigate methods for extracting and converting intermittent energy from variable speed wind generators and supplying to electricity grids. Low cost power conditioning units for integrating small-scale wind generators will be designed, developed and commercialised. It is expected that this project will lead to a systematic design procedure for grid connected inverter technology using a novel current control technique, and extraction of more energy from small scale wind turbines especially at low wind speeds. Successful commercialisation will result in significant reduction in cost resulting wider application of wind turbines, substantial economic benefit to the commercial partners as well as Australian communities in rural areas.Read moreRead less
High power density, low cogging torque and low-cost micro-scale wind turbine generator system utilising soft magnetic composite materials. This project will develop a low-cost, high-performance and high-ef?ciency micro-scale wind turbine generator using a new magnetic material consisting of iron powder, which can be easily pressed into any desirable shape. This allows considerably simpli?ed manufacturing, greater design ?exibility and ease of scaling to higher output powers.
A compact microphone array system for outdoor low frequency noise measurements. To investigate the impact of wind farm noise on surrounding communities, the sound level caused by wind turbines must be accurately measured, which sometimes is hard due to wind induced noise and other interference noise. This project aims to propose a novel compact microphone array solution, where the wind induced noise is attenuated by a specially designed windproof shell first, and then the residual wind induced n ....A compact microphone array system for outdoor low frequency noise measurements. To investigate the impact of wind farm noise on surrounding communities, the sound level caused by wind turbines must be accurately measured, which sometimes is hard due to wind induced noise and other interference noise. This project aims to propose a novel compact microphone array solution, where the wind induced noise is attenuated by a specially designed windproof shell first, and then the residual wind induced noise and other interference noise are further filtered out by a specific adaptive noise cancellation algorithm based on the spherical and differential microphone array structure. With the proposed system, the measurement configuration size is expected to be reduced from the current few metres to less than 10 centimetres, and with better accuracy.Read moreRead less
Degradation conscious grid-scale battery energy management scheme. The project aims to develop an improved battery management system to smooth the intermittent contribution of renewable energy sources to the grid. As the level of penetration of renewable energy sources into electrical grids increases, energy storage will play an increasingly important role in solving some of the technical challenges caused by the intermittent nature of the renewable sources. The existing design methods for gri ....Degradation conscious grid-scale battery energy management scheme. The project aims to develop an improved battery management system to smooth the intermittent contribution of renewable energy sources to the grid. As the level of penetration of renewable energy sources into electrical grids increases, energy storage will play an increasingly important role in solving some of the technical challenges caused by the intermittent nature of the renewable sources. The existing design methods for grid-scale battery management systems do not take into consideration the degradation of the battery banks. Thus, this project aims to fill this gap by developing an electrochemical-based, degradation-conscious, battery management system. The proposed system aims to increase the life span and capacity use of the batteries.Read moreRead less
Harmonic suppression and delay compensation for inverters. The aim of this project is to use variable prediction horizon nonlinear model predictive control to achieve near perfect harmonic suppression for inverters in the face of realistic and unavoidable switching delays. Other aims include further performance improvement based on the application of Kalman observer, and extension of the ideas to a variety of switching topologies and validation of the results by simulation and experiments. The i ....Harmonic suppression and delay compensation for inverters. The aim of this project is to use variable prediction horizon nonlinear model predictive control to achieve near perfect harmonic suppression for inverters in the face of realistic and unavoidable switching delays. Other aims include further performance improvement based on the application of Kalman observer, and extension of the ideas to a variety of switching topologies and validation of the results by simulation and experiments. The intended main outcome of the project is the development of a methodology for non-interfering operation of inverters, particularly, in grid connected applications. This is expected to facilitate a further integration of renewable energy and highly efficient power utilisation. Both factors are crucial in the sustainable clean energy future.Read moreRead less