High penetration of grid connected inverters used in renewable energy systems and smart loads has significantly deteriorated the power quality of grids.

Pulse Width Modulated (PWM) voltage and fast switching transients generated by power converters create high-frequency harmonics and Electromagnetic Interferences (EMI). These issues affect the reliability, quality and safe operation of grids and grid-connected equipment such as smart meters, transformers, cables and communication signalling.

Our research team has been studying and monitoring power quality problems of distribution networks using a multi-domain simulation platform and power quality data analysis at device and system levels. These methodologies will assist network service providers and manufacturers to better analyse harmonics and resonances within low and high-voltage power systems and further support them to develop new planning guidelines and regulations to address power quality of grid-connected solar inverters and wind turbines. 

Research Methodologies:

  • Grid connected system analysis, modelling and simulation
  • A comprehensive power quality measurement and data analysis with advanced simulation tools
  • Energy Efficiency Improvement of advanced power electronics systems using WBG devices
  • 2-150 kHz supra-harmonics at device and system levels
  • Grid connected renewable energy systems (stability and quality control)
  • Australian and IEC Standardization Committees: Power Quality and Harmonics (SC77A, WG1, WG8 WG9)
  • Developing the first international Standard (IEC), for grid-connected solar inverter, IEC 61000-3-16