A Segmented Interior Permanent Magnet Synchronous Motor for Wide Field Weakening Range and its Sensorless Control using Improved Flux Estimators. Australia has the world's second largest reserve (after China) of high energy-density permanent magnet (neodymium-iron-boron) material for the IPM motor. The present limitation of the machine to be driven sensorless over a wide speed range with field weakening is believed to be holding back its widespread use in applications other than servo-type which ....A Segmented Interior Permanent Magnet Synchronous Motor for Wide Field Weakening Range and its Sensorless Control using Improved Flux Estimators. Australia has the world's second largest reserve (after China) of high energy-density permanent magnet (neodymium-iron-boron) material for the IPM motor. The present limitation of the machine to be driven sensorless over a wide speed range with field weakening is believed to be holding back its widespread use in applications other than servo-type which requires high-resolution mechanical sensors. Extension of the motor speed range by a combination of magnetic system design (for large field weakening range), and sensorless position and flux estimation with sufficient accuracy for fast dynamic control should lead to large scale adoption of this motor, and hence to significant improvement in energy efficiency and market share for Australia.Read moreRead less
Improvements of Direct Torque Controllers for the Interior Permanent Magnet Synchronous Motor. The Direct Torque Control (DTC) strategy has recently been applied successfully to the interior permanent magnet (IPM) motor which offers the highest torque/volume and efficiency of all known machines. Exploitation of the recently developed Neodynium-Iron-Boron material, of which Australia is the world's second largest producer, in the IPM motor and of new sensorless control strategies such as the DTC ....Improvements of Direct Torque Controllers for the Interior Permanent Magnet Synchronous Motor. The Direct Torque Control (DTC) strategy has recently been applied successfully to the interior permanent magnet (IPM) motor which offers the highest torque/volume and efficiency of all known machines. Exploitation of the recently developed Neodynium-Iron-Boron material, of which Australia is the world's second largest producer, in the IPM motor and of new sensorless control strategies such as the DTC controller, promises to open vast application potentials, such as in the upcoming hybrid and totally electric automobiles, for these motors. The new DTC controller developed at UNSW shows high promise for delivering a high-performance, sensorless IPM motor drive. This project aims to investigate, and overcome, the remaining problems of this technique.Read moreRead less
Optimum rotor and concentrated stator-winding structures for improving the torque, field-weakening and power-density characteristics of interior permanent-magnet machines. The successful completion of this project will deliver one of the most energy efficient and compact motor which will meet the expectations of future electric and hybrid electric vehicles. The current generation of surface Permanent Magnet (PM) and Interior Permanent Magnet (IPM) motors are not optimized in terms of compactness ....Optimum rotor and concentrated stator-winding structures for improving the torque, field-weakening and power-density characteristics of interior permanent-magnet machines. The successful completion of this project will deliver one of the most energy efficient and compact motor which will meet the expectations of future electric and hybrid electric vehicles. The current generation of surface Permanent Magnet (PM) and Interior Permanent Magnet (IPM) motors are not optimized in terms of compactness, energy-density and efficiency, and torque characteristics. Australia has the world's second largest reserve of the magnet material for IPM machines. It also has a significant niche industry for specialized machine design. These twin advantages should offer Australia huge potential benefits in the world market for electric and hybrid electric vehicles and for substantial reduction in our dependence on importing petrol and greenhouse gas emissions.Read moreRead less
Advanced fault tolerant drives for safety critical applications. The key aim of this project is to develop an electrical drive system with enhanced tolerance to system faults. The research is significant as it aims to satisfy the demands of emerging high-reliability applications for electric drive systems utilising a patented concentrated-wound permanent magnet machine. Applications for the research include the automotive, aerospace and resource sectors which are global growth sectors. A new hig ....Advanced fault tolerant drives for safety critical applications. The key aim of this project is to develop an electrical drive system with enhanced tolerance to system faults. The research is significant as it aims to satisfy the demands of emerging high-reliability applications for electric drive systems utilising a patented concentrated-wound permanent magnet machine. Applications for the research include the automotive, aerospace and resource sectors which are global growth sectors. A new high-quality model of the machine is expected to be realised. This new model is proposed to then inform the development of suitable control techniques for the machine driven by fault-tolerant inverter topologies. The research is then planned to be demonstrated on prototype research machines and the system performance compared with existing state-of-the-art technology.Read moreRead less
The design and development of a novel high power-to-weight actuator. Powerful and compact actuators are becoming increasingly in demand due to the sophistication in a range of uses varying from aerospace to automotive accessories. The aim of this project is to develop an actuator with high performance and power-to-weight ratio, suitable for use in cutting-edge applications. In the first instance, the focus will be on developing an automotive mirror actuator in close collaboration with the indust ....The design and development of a novel high power-to-weight actuator. Powerful and compact actuators are becoming increasingly in demand due to the sophistication in a range of uses varying from aerospace to automotive accessories. The aim of this project is to develop an actuator with high performance and power-to-weight ratio, suitable for use in cutting-edge applications. In the first instance, the focus will be on developing an automotive mirror actuator in close collaboration with the industrial partner, but the generic research outcomes will be applicable to development of actuators for other purposes. The new generation actuators will contribute to Australian manufacturing exports to become internationally competitive.Read moreRead less
Properties and Characterisation of Magneto-Rheological Materials under Rotating Magnetic Field Excitation. Through the proposed theoretical and experimental studies, new electro-magneto-mechanical phenomena of the MR materials under various vectorial magnetisations will be observed. Based on the in-depth understanding of the complex vectorial magneto-rheological mechanisms, an accurate coupled model will be developed for design and analysis of novel dampers. These outcomes will greatly enhance t ....Properties and Characterisation of Magneto-Rheological Materials under Rotating Magnetic Field Excitation. Through the proposed theoretical and experimental studies, new electro-magneto-mechanical phenomena of the MR materials under various vectorial magnetisations will be observed. Based on the in-depth understanding of the complex vectorial magneto-rheological mechanisms, an accurate coupled model will be developed for design and analysis of novel dampers. These outcomes will greatly enhance the design capacity of Australian industry in smart structures, i.e. using novel dampers to reduce harmful vibrations and protect people in vehicles, buildings, and bridges. This will help Australians to live in a safer and healthier environment, and could save billions of dollars per year nationwide for treatment, recovery, and insurance claims.Read moreRead less
Innovative Design of Soft Magnetic Composite Brushless Permanent Magnet Motors with Enhanced Characteristics and Manufacturing Advantages for Commercial Applications. Using variable-speed drives can save significant amounts of energy. These drives utilise motors and power electronics to operate the system at the highest efficiency. However, the high cost of such drives is the most important issue restricting their wider application. Although the cost of power electronics has dropped substantiall ....Innovative Design of Soft Magnetic Composite Brushless Permanent Magnet Motors with Enhanced Characteristics and Manufacturing Advantages for Commercial Applications. Using variable-speed drives can save significant amounts of energy. These drives utilise motors and power electronics to operate the system at the highest efficiency. However, the high cost of such drives is the most important issue restricting their wider application. Although the cost of power electronics has dropped substantially in recent years, the motor cost has been relatively unchanged. To address this issue, we propose an innovative motor construction method using soft magnetic composites materials, which is simpler and provides higher assembly tolerances. The method will reduce the motor manufacturing cost and improve its efficiency and so make the use of variable speed drives more attractive in many other drive applications.Read moreRead less
Hydrodynamic Stability of the VentrAssist Blood Pump, an Experimental and Numerical Investigation. This project will investigate, both numerically and experimentally, the stability of the impeller-bearing system of a rotary blood pump and will make recommendations about the optimum bearing configurations. Findings from this project will contribute to the commercialisation of the blood pump undertaken by the research Group formed by the staff from UTS, UNSW and VentrAssist Pty Ltd - the first of ....Hydrodynamic Stability of the VentrAssist Blood Pump, an Experimental and Numerical Investigation. This project will investigate, both numerically and experimentally, the stability of the impeller-bearing system of a rotary blood pump and will make recommendations about the optimum bearing configurations. Findings from this project will contribute to the commercialisation of the blood pump undertaken by the research Group formed by the staff from UTS, UNSW and VentrAssist Pty Ltd - the first of its kind in Australia. Rotary blood pumps are at the leading edge of cardiac assist technology worldwide and an investigation of the impeller dynamics will add greatly to the understanding of the related important factors in blood pump design.Read moreRead less
Characterisation of amorphous metal materials. This project aims to develop in-depth understanding of magnetisation mechanisms and accurate characterisation of amorphous metal materials for effectively designing advanced transformers. This project expects to generate new knowledge in the area of property understanding and modelling of advanced soft magnetic materials through extensive theoretical and experimental studies on material samples and transformer prototypes. The intended outcome is hig ....Characterisation of amorphous metal materials. This project aims to develop in-depth understanding of magnetisation mechanisms and accurate characterisation of amorphous metal materials for effectively designing advanced transformers. This project expects to generate new knowledge in the area of property understanding and modelling of advanced soft magnetic materials through extensive theoretical and experimental studies on material samples and transformer prototypes. The intended outcome is high-frequency high-power-density transformers, which are crucial in many distributed renewable energy systems. The project would significantly benefit Australian manufacturing industry at the high-end market.Read moreRead less
Autonomous service robots in a multi-agent based system for household and industrial environments. This project addresses fundamental research issues required to develop autonomous mobile robots for intelligent cleaning services. As an interdisciplinary project spanning the fields of robotics, mechatronics and AI, it offers potential benefits in bringing robots into less-structured human environments. Robots performing autonomous cleaning (including hazardous waste and spillage) and security tas ....Autonomous service robots in a multi-agent based system for household and industrial environments. This project addresses fundamental research issues required to develop autonomous mobile robots for intelligent cleaning services. As an interdisciplinary project spanning the fields of robotics, mechatronics and AI, it offers potential benefits in bringing robots into less-structured human environments. Robots performing autonomous cleaning (including hazardous waste and spillage) and security tasks in both household and industrial environments has tremendous national/community benefits in cost and time savings, improved efficiency and safety, and facilitating hazardous or labour intensive tasks. Other benefits include research training, strengthening Australia's R&D position in key innovative technologies, and creating jobs and exports.Read moreRead less