Design and Control of Sensorless, Brushless, Linear Permanent Magnet Motors for Fluid Pumping. Many machines require reciprocating motion and achieve it by mechanical conversion of rotary motion. In particular, pistons for liquid pumping and gas compression are usually driven by a crank on a rotary electric motor. Driving the piston directly by a linear motor eliminates the cost, weight, inefficiency and wear of the mechanical conversion. This project will design, construct and test high efficie ....Design and Control of Sensorless, Brushless, Linear Permanent Magnet Motors for Fluid Pumping. Many machines require reciprocating motion and achieve it by mechanical conversion of rotary motion. In particular, pistons for liquid pumping and gas compression are usually driven by a crank on a rotary electric motor. Driving the piston directly by a linear motor eliminates the cost, weight, inefficiency and wear of the mechanical conversion. This project will design, construct and test high efficiency, tubular, linear permanent magnet motors for fluid pumping. Further, an intelligent electronic controller will be developed to control the motor speed and reversals without sensors in the motor. Initial applications will be solar powered water pumping and purification.Read moreRead less
Development of Low Cost High Performance Motor Drives for Electrical Appliances using New Soft Magnetic Composite Materials. This project aims to break the major barrier to commercial production of efficient electrical appliances by developing low cost high performance motor drives using new soft magnetic composite materials. Initial applications will be swimming pool/spa pump drives. Optimum material composition, novel motor topologies, intelligent variable speed drive, and motor manufacturing ....Development of Low Cost High Performance Motor Drives for Electrical Appliances using New Soft Magnetic Composite Materials. This project aims to break the major barrier to commercial production of efficient electrical appliances by developing low cost high performance motor drives using new soft magnetic composite materials. Initial applications will be swimming pool/spa pump drives. Optimum material composition, novel motor topologies, intelligent variable speed drive, and motor manufacturing techniques using mould injection/compaction will be developed to reduce the production cost with improved performance in collaboration with Waterco. The new technology will contribute to reduction of greenhouse gas emission by reducing energy consumption of electrical appliances and once commercialised will greatly enhance the competitiveness of Australian industry in the world market.Read moreRead less
High Efficiency Low Cost Low Noise Variable Speed Compressor Drive for Refrigeration and Air Conditioning Systems. This project aims to break the major barriers to the commercial production of efficient refrigerators and air conditioners by developing a high efficiency low cost low noise variable speed compressor drive. High performance PM motors, power electronic fault tolerant converters/inverters, and intelligent algorithms for motor control and temperature control will be developed to meet ....High Efficiency Low Cost Low Noise Variable Speed Compressor Drive for Refrigeration and Air Conditioning Systems. This project aims to break the major barriers to the commercial production of efficient refrigerators and air conditioners by developing a high efficiency low cost low noise variable speed compressor drive. High performance PM motors, power electronic fault tolerant converters/inverters, and intelligent algorithms for motor control and temperature control will be developed to meet the specific requirements of compressor drives in collaboration with Kirby Refrigeration. The new technology will contribute to the reduction of CO2 greenhouse gas emission by reducing the energy consumption of refrigerators and air conditioners and once commercialised will greatly enhance the competitiveness of Australian industry in the world market.Read moreRead less
An Integrated Starter Alternator for Automobiles using a New Wide Speed Range Interior Permanent Magnet Motor and a Matrix Z-Source Converter. The projected growth of power demand and efficiency of future automobiles calls for a suitable integrated starter-alternator (ISA) to be developed. While interim solutions have been offered, a true ISA is still considered to be more than five years away. Considering the huge worldwide market, an ISA developed in Australia is expected to benefit the large ....An Integrated Starter Alternator for Automobiles using a New Wide Speed Range Interior Permanent Magnet Motor and a Matrix Z-Source Converter. The projected growth of power demand and efficiency of future automobiles calls for a suitable integrated starter-alternator (ISA) to be developed. While interim solutions have been offered, a true ISA is still considered to be more than five years away. Considering the huge worldwide market, an ISA developed in Australia is expected to benefit the large Australian automobile industry significantly. The CIs has strong links with local developers and suppliers of power semiconductors and motors, who have participated in the recent developments already carried out. A proven ISA developed locally should be a boon for these industries.Read moreRead less
Analysis, simulation, fabrication and characterization of reliable, robust and scalable compact cooling elements based on semiconductor nanostructures. Modern electronic, microelectronic and optoelectronic devices generally work better when they are cooler. We aim to develop a semiconductor nanostructure cooling element which directly integrates into existing devices. The solid-state cooling element will be reliable, robust, scalable and operate in any orientation. The basis of operation is ....Analysis, simulation, fabrication and characterization of reliable, robust and scalable compact cooling elements based on semiconductor nanostructures. Modern electronic, microelectronic and optoelectronic devices generally work better when they are cooler. We aim to develop a semiconductor nanostructure cooling element which directly integrates into existing devices. The solid-state cooling element will be reliable, robust, scalable and operate in any orientation. The basis of operation is thermionic emission - electrons are the working fluid. Our project combines (1) analysis and simulation, (2) fabrication of nanostructures and (3) experimental test-benching using optical and electrical methods. The outcome of this research has the potential to revolutionize cooling of modern electronic and photonic systems, from computer motherboards to mobile phones.Read moreRead less
A methodology for the control of harmonics due to large distorting loads. The ideal electricity supply has a voltage of prescribed frequencey and value with a sinusoidal waveshape. Modern electronic equipment such as digital commuication equipment and automatic manufacturing lines draw non-sinusoidal currents which distort the voltage waveform. Electricity suppliers are responsible for limiting voltage distoration to levels set by national standards. Techniques have been developed to allow them ....A methodology for the control of harmonics due to large distorting loads. The ideal electricity supply has a voltage of prescribed frequencey and value with a sinusoidal waveshape. Modern electronic equipment such as digital commuication equipment and automatic manufacturing lines draw non-sinusoidal currents which distort the voltage waveform. Electricity suppliers are responsible for limiting voltage distoration to levels set by national standards. Techniques have been developed to allow them to determine the maximum level of current distortion to which a particular customer is entitled. This project will developand verify a method for determining if a particular customer exceeds that entitlement.Read moreRead less
Novel methods for enhancing room temperature figure of merit of thermoelectric/thermionic materials for refrigeration applications. With global warming and an increased awareness of climate change, devices such as thermoelectric modules can be part of the solution, particularly if their relative power and efficiency can be increased. The aim of this project is to bring together theoreticians, experimentalists, materials scientists, and industrial partners with complementary expertise to develop ....Novel methods for enhancing room temperature figure of merit of thermoelectric/thermionic materials for refrigeration applications. With global warming and an increased awareness of climate change, devices such as thermoelectric modules can be part of the solution, particularly if their relative power and efficiency can be increased. The aim of this project is to bring together theoreticians, experimentalists, materials scientists, and industrial partners with complementary expertise to develop new techniques and methods for fabricating novel thermoelectric/thermionic materials with high figure of merit, ZT, for solid state refrigeration applications. The success of the project will lead to a 3 to 5 fold increase in the market share of thermoelectric cooler and will have a significant impact on the Australian economy and reduce greenhouse emissions and global warming. Read moreRead less
Simulation and characterisation of opto-thermionic cooling devices. Opto-thermionic devices combine thermionic emission and laser cooling to achieve the maximum cooling power and highest thermal efficiency. These devices are ultra small, very reliable and fully integrable. Many important problems need to be solved to improve the performance of this new class of solid-state cooling devices. One is to understand and manipulate the electron-hole radiative recombination and minimize the Auger proces ....Simulation and characterisation of opto-thermionic cooling devices. Opto-thermionic devices combine thermionic emission and laser cooling to achieve the maximum cooling power and highest thermal efficiency. These devices are ultra small, very reliable and fully integrable. Many important problems need to be solved to improve the performance of this new class of solid-state cooling devices. One is to understand and manipulate the electron-hole radiative recombination and minimize the Auger process in reduced dimensionality devices such as quantum wells. Researchers at Wollongong and Lund will collaborate on theoretical analysis, computer simulation and electrical/optical measurements to solve this problem.Read moreRead less
High efficiency thermoelectric nanomaterials. High efficiency thermoelectric power generators and refrigerators will have a wealth of applications in the automotive, semiconductor and power generation industries, among many others. Such technology could be used to recycle a significant fraction of the waste heat produced in industrial processes or in car engines, reducing fuel consumption and greenhouse gas emissions, or to produce high efficiency domestic refrigerators with no moving parts. Thi ....High efficiency thermoelectric nanomaterials. High efficiency thermoelectric power generators and refrigerators will have a wealth of applications in the automotive, semiconductor and power generation industries, among many others. Such technology could be used to recycle a significant fraction of the waste heat produced in industrial processes or in car engines, reducing fuel consumption and greenhouse gas emissions, or to produce high efficiency domestic refrigerators with no moving parts. This project will improve our theoretical understanding of the fundamental physics which underlies the operation of thermoelectric power generators and refrigerators, and will assist the design and optimisation of the next generation of high efficiency thermoelectric nanomaterials.Read moreRead less
Development of Solid-state cooling chips. The performance of modern electronic, microelectronic, optoelectronic and photonic devices improves as they are cooled. We aim to develop semiconductor cooling elements that can be directly integrated into existing circuits and devices. The new solid-state cooling elements will be reliable, robust, scalable and operate in any orientation. The proposed international collaboration combines the expertise of the Chinese Academy of Science in device fabricat ....Development of Solid-state cooling chips. The performance of modern electronic, microelectronic, optoelectronic and photonic devices improves as they are cooled. We aim to develop semiconductor cooling elements that can be directly integrated into existing circuits and devices. The new solid-state cooling elements will be reliable, robust, scalable and operate in any orientation. The proposed international collaboration combines the expertise of the Chinese Academy of Science in device fabrication with the expertise of the University of Wollongong in device characterisation and modelling. The outcome of this research has the potential to revolutionize cooling of diverse electronic systems, from computer motherboards to mobile phones.Read moreRead less