| 2019 |
Jiang J, Coates C, Summers T, 'Accurate reactive power sharing in renewable-prioritized islanded microgrids', 2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe (2019)
© 2019 EPE Association. An accurate reactive power sharing scheme aiming to prioritize renewable sources is proposed and implemented under modified droop control in islanded micro... [more] © 2019 EPE Association. An accurate reactive power sharing scheme aiming to prioritize renewable sources is proposed and implemented under modified droop control in islanded microgrids. In order to improve reactive power sharing accuracy, an interfacing inductor and grid voltage estimation strategy is used. Simulation and experimental results show the efficacy of the approach.
|
|
|
| 2018 |
Jiang J, Coates C, 'Droop control based strategy for photovoltaic sources in an islanded microgrid', Australasian Universities Power Engineering Conference, AUPEC 2018 (2018)
© 2018 IEEE. To integrate more renewable energy (RE) into the power grid, an effective control strategy for photovoltaic (PV) sources in an islanded microgrid is investigated. A p... [more] © 2018 IEEE. To integrate more renewable energy (RE) into the power grid, an effective control strategy for photovoltaic (PV) sources in an islanded microgrid is investigated. A power sharing scheme is designed to give PV sources the priority of power supply. Based on the scheme, adjusted droop control strategy is employed for voltage source inverters (VSI). Considering PV power characteristics, a DC/DC converter controller is also designed for PV panels. There are two operating modes of PV sources: Maximum power point tracking (MPPT) mode and power curtailment (PC) mode. MPPT mode is supported by MPPT technique combining with a frequency increment on the VSI droop controller. The traditional droop controller and DC bus voltage tracking loop support PC mode. Stability analysis is conducted. Simulation results show the control strategy can share power demand effectively among different kinds of power sources even under varying weather conditions.
|
|
|
| 2018 |
Sun KW, Summers TJ, Coates CE, 'Oscillating Power Minimization in Cascaded H-bridge Converter with Phase-Shifted Carrier PWM', 2018 20TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'18 ECCE EUROPE), Riga, LATVIA (2018) [E1] |
|
|
| 2018 |
Sun K, Summers T, Coates C, 'Current Ripple Reduction for Cascaded H-bridge Converter with Phase-Shifted Carrier PWM', 2018 IEEE 4th Southern Power Electronics Conference, SPEC 2018, Singapore (2018) [E1]
|
|
|
| 2018 |
Jiang J, Coates C, 'Power Sharing Scheme for an Islanded Microgrid Including Renewables and Battery Storage', 2018 IEEE 4th Southern Power Electronics Conference, SPEC 2018, Singapore (2018) [E1]
|
|
|
| 2018 |
Sun KW, Summers TJ, Coates CE, 'Evaluation of peak-to-peak current ripple of phase shifted carrier PWM multilevel cascaded H-bridge converters', Proceedings - 2017 IEEE Southern Power Electronics Conference, SPEC 2017 (2018)
© 2017 IEEE. The Phase Shifted Carrier Pulse Width Modulation (PSC-PWM) technique is a commonly used modulation strategy for multilevel converters. The PSC-PWM technique offers gr... [more] © 2017 IEEE. The Phase Shifted Carrier Pulse Width Modulation (PSC-PWM) technique is a commonly used modulation strategy for multilevel converters. The PSC-PWM technique offers great performance advantages such as equal switch utilization, equal DC link utilization and harmonic benefits. With any PWM converters or modulation strategies, current ripple is inevitably generated and should be minimized. In particular, the peak-to-peak current ripple plays an adverse role in power converters, if ignored the current ripple would deteriorate the performance of the converter and damage the switching devices if the ripple exceeds the operating current limit of the device. This paper offers a novel approach for evaluating the peak-to-peak current ripple of a PSC-PWM Multilevel Cascaded H-Bridge (MLCHB). It is shown that the proposed method can determine the peak-to-peak current ripple of the standard PSC-PWM as well as with common-mode injected modulation. A comparison is made between two MLCHB converters with different number of H-bridge cells and modulation indexes. Lastly simulation results of the proposed method are provided.
|
|
|
| 2017 |
Sun KW, Summers TJ, Coates CE, 'Evaluation of Peak-to-Peak Current Ripple of Phase Shifted Carrier PWM Multilevel Cascaded H-Bridge Converters', 2017 IEEE SOUTHERN POWER ELECTRONICS CONFERENCE (SPEC), Puerto Varas, CHILE (2017) |
|
|
| 2017 |
Sun KW, Summers TJ, Coates CE, Starkey CJ, 'Implementation of a Multilevel Cascaded H-Bridge Drive for an Ironless Axial Flux Permanent Magnet Motor for Electric Vehicle Applications', 2017 19TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'17 ECCE EUROPE), Warsaw, POLAND (2017) [E1]
|
|
|
| 2017 |
Jiang J, Coates C, 'Voltage Collapse Issue in a Photovoltaic Source Operating in an Islanded Microgrid', 2017 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING CONFERENCE (AUPEC), Melbourne, AUSTRALIA (2017) [E1]
|
|
|
| 2016 |
Sun KW, Summers TJ, Coates CE, 'Ironless axial flux permanent magnet motor control with multilevel cascaded H-bridge converter for electric vehicle applications', 2016 IEEE 2nd Annual Southern Power Electronics Conference, SPEC 2016, Auckland, NZ (2016) [E1]
|
|
|
| 2012 |
Batt NJ, Coates C, 'Maximising output power of self-excited induction generators for small wind turbines', Proceedings: 2012 XXth International Conference on Electrical Machines, Marseille (2012) [E1]
|
|
|
| 2011 |
Kosman J, Viswanath A, Coates C, 'Lagrange relaxation based unit commitment for thermal, solar and wind power generation', PESA 2011: IASTED International Conference on Power and Energy Systems and Applications, Pittsburgh (2011) [E1]
|
|
|
| 2011 |
Batt NJ, Coates CE, 'Optimal matching of a self-excited induction generator to a small wind turbine', 30th ISES Biennial Solar World Congress 2011, SWC 2011, Kassel, Germany (2011) [E1] |
|
|
| 2010 |
Goodwin GC, Mayne DQ, Chen T, Coates C, Mirzaeva G, Quevedo DE, 'Opportunities and challenges in the application of advanced control to power electronics and drives', Proceedings. ICIT 2010: IEEE-ICIT 2010 International Conference on Industrial Technology, Vina Del Mar, Chile (2010) [E1]
|
|
|
| 2009 |
Choon CC, Coates C, Viswanath A, 'Renewable energy source emulator', Sustainability in Energy and Buildings: Proceedings of the International Conference in Sustainability in Energy and Buildings (SEB'09), Brighton, UK (2009) [E1]
|
|
|
| 2007 |
Griffiths M, Coates C, 'Behaviour of microgrids in the presence of unbalanced loads', 2007 AUSTRALASIAN UNIVERSITIES POWER ENGINEERING, VOLS 1-2, Curtin Univ Technol, Perth, AUSTRALIA (2007) |
|
|
| 2007 |
Coates C, Macready AR, 'Comparison of simulation models for self-excited induction generators', 2007 Australasian Universities Power Engineering Conference. AUPEC '07. Proceedings, Perth, WA (2007) [E1] |
|
|
| 2007 |
Macready AR, Coates C, 'Low cost wind turbine controller', 2007 Australasian Universities Power Engineering Conference. AUPEC '07. Proceedings, Perth, WA (2007) [E1]
|
|
|
| 2007 |
Griffiths MN, Coates C, 'Behaviour of microgrids in the presence of unbalanced loads', 2007 Australasian Universities Power Engineering Conference. AUPEC '07. Proceedings, Perth, WA (2007) [E1]
|
|
|
| 2007 |
Mirzaeva G, Coates C, 'A high performance drive for the rotary coal breaker application', Proceedings of the IEEE Industry Applications Conference, 2007: 42nd IAS Annual Meeting, New Orleans (2007) [E1]
|
|
|
| 2006 |
Griffiths MN, Coates C, 'Modelling and Performance of Low Voltage Distributed Generation Systems', Proceedings of the 2006 Australasian Universities Power Engineering Conference (AUPEC'06), Melbourne VIC, Australia (2006) [E1] |
|
|
| 2005 |
Mirzaeva G, Middleton RH, Coates C, McKerihan J, 'Electrical Drive Technology Advances for Mining Applications', 2005 Australian Mining Technology Conference : 'new technologies to produce more with less' : 27 - 28 September 2005 Fremantle, WA, Fremantle, Western Australia (2005) [E1]
|
|
|
| 2004 |
Coates C, 'Electrical drive issues in rope shovels and longwall mining machines', CD ROM, Noosa (2004) [E1] |
|
|
| 2003 |
Coates C, Pulle DW, Veltman A, 'Modelling of Single Phase Induction Machines', Proceedings for AUPEC 2003, Christchurch, NZ (2003) [E1] |
|
|
| 2001 |
Coates C, Platt GM, Gosbell VJ, 'Performance Evaluation of a Nine-Phase Synchronous Reluctance Drive', 2001 IEEE Industry Applications Conference 36th IAS Annual Meeting, Chicago, Illinois, USA (2001) [E2]
|
|
|
| 2001 |
Coates C, Platt GM, Gosbell VJ, 'Performance of Nine-Phase Synchronous Reluctance Drive', The 4th IEEE International Conference on Power Electronics and Drive Systems, Bali, Indonesia (2001) [E2]
|
|
|
| 2000 |
Coates C, Platt D, Gosbell VJ, 'Control and Performance of a Nine Phase Synchronous Reluctance Drive', AUPEC 2000 Innovation for Secure Power, Brisbane, Australia (2000) [E1] |
|
|
| 1997 |
Coates CE, Platt D, Perera BSP, 'Design optimization of an axially laminated synchronous reluctance motor', Conference Record - IAS Annual Meeting (IEEE Industry Applications Society) (1997)
The rotor saliency of the axially laminated synchronous reluctance motor (SynRM) produces a square airgap flux density distribution. If a square current distribution interacts wit... [more] The rotor saliency of the axially laminated synchronous reluctance motor (SynRM) produces a square airgap flux density distribution. If a square current distribution interacts with this flux the SynRM generates its optimal torque. This paper extends previous work on the magnetic modelling of the SynRM. A design model is proposed which incorporates all rotor and stator dimensions. Saturation effects have also been included in the model. The key dimensions affecting SynRM performance are identified as rotor radius, rotor pole pitch, rotor steel : steel+fibre ratio, airgap, stator current density and stator slot opening. An iterative algorithm is determined for the design optimization process. This algorithm is simple enough to be implemented in a spreadsheet environment. The model is used to design a 5 kW motor with an optimal torque/unit mass ratio. The designed motor has a nine phase concentrated winding to approximate the ideal square current excitation. Finite element analysis and a static load test on the constructed machine confirm the model's predictions. In addition, optimal values for the key motor dimensions, over a range of motor sizes, are determined and discussed.
|
|
|
