IEM Distinguished Lecturers Seminar: PHASING AC OUT, DIRECTLY: Recent Advances on DC Transformers for Power Generation, Transmission, and Distribution.
The seminar will take place in ELA 2 and will be simultaneously broadcasted in Neuchâtel Campus (MC A1 272).
Coffee and cookies will be served at 13:00 before the seminar, in front of the two auditoriums.
Abstract
The power system nowadays are dominated by alternating current (AC). With the increasing penetration of renewable energy sources and ubiquitous power electronics apparatus, DC power is making a comeback. In the generation aspect, the PV, wind, and energy storage are inherently DC sources. For transmission, the high-voltage direct current (HVDC) has become the feasible solution for transmitting large amounts of power over long distances or submarine cables. For distribution, DC is more capable of accommodating a higher level of renewable energy and friendly to the EV charging stations. Therefore, DC is highly expected in both academics and industries.
Nevertheless, just like the role of transformer in AC systems, DC grids also require such a device to exchange power between networks with different voltage levels. As DC circuit does not satisfy the law of Electromagnetic Induction, it is not possible to use magnetic transformers to convert DC voltage but has to rely on power electronics technology. Although the DC/DC power-electronic converters have been widely studied and applied at low-power applications and a myriad of topologies exist, most of these topologies are not readily scaled up to tens/hundreds of kilovolts and megawatt power ranges, due to the limitations of loss, cost, dv/dt, and ratings of the semiconductors. To overcome these limitations, several novel high-power DC transformer techniques have been proposed and demonstrated during the last few years. This tutorial will give a systematic review of the latest development in this filed.
Bio
Binbin Li received his PhD degree in Electrical Engineering from Harbin Institute of Technology (HIT), China, 2017, and is currently Professor in School of Electrical Engineering and Automation, HIT. His research interests include multilevel converters, solid-state transformers, power amplifier, and HVDC system. He has been selected in the Young Elite Scientists Sponsorship Program by China Association for Science and Technology, and DC Power Outstanding Young Researcher award by Chinese Society for Electrical Engineering (CSEE). He is PI of more than 30 research grants and projects on power electronics, holds more than 20 patents and has collaborated with the industries developing several mega-watt power converters, and published more than 60 journal papers. Currently he is associate editor of IEEE Transactions on Power Electronics and IEEE Open Journal of the Industrial Electronics Society.
Coffee and cookies will be served at 13:00 before the seminar, in front of the two auditoriums.
Abstract
The power system nowadays are dominated by alternating current (AC). With the increasing penetration of renewable energy sources and ubiquitous power electronics apparatus, DC power is making a comeback. In the generation aspect, the PV, wind, and energy storage are inherently DC sources. For transmission, the high-voltage direct current (HVDC) has become the feasible solution for transmitting large amounts of power over long distances or submarine cables. For distribution, DC is more capable of accommodating a higher level of renewable energy and friendly to the EV charging stations. Therefore, DC is highly expected in both academics and industries.
Nevertheless, just like the role of transformer in AC systems, DC grids also require such a device to exchange power between networks with different voltage levels. As DC circuit does not satisfy the law of Electromagnetic Induction, it is not possible to use magnetic transformers to convert DC voltage but has to rely on power electronics technology. Although the DC/DC power-electronic converters have been widely studied and applied at low-power applications and a myriad of topologies exist, most of these topologies are not readily scaled up to tens/hundreds of kilovolts and megawatt power ranges, due to the limitations of loss, cost, dv/dt, and ratings of the semiconductors. To overcome these limitations, several novel high-power DC transformer techniques have been proposed and demonstrated during the last few years. This tutorial will give a systematic review of the latest development in this filed.
Bio
Binbin Li received his PhD degree in Electrical Engineering from Harbin Institute of Technology (HIT), China, 2017, and is currently Professor in School of Electrical Engineering and Automation, HIT. His research interests include multilevel converters, solid-state transformers, power amplifier, and HVDC system. He has been selected in the Young Elite Scientists Sponsorship Program by China Association for Science and Technology, and DC Power Outstanding Young Researcher award by Chinese Society for Electrical Engineering (CSEE). He is PI of more than 30 research grants and projects on power electronics, holds more than 20 patents and has collaborated with the industries developing several mega-watt power converters, and published more than 60 journal papers. Currently he is associate editor of IEEE Transactions on Power Electronics and IEEE Open Journal of the Industrial Electronics Society.
Practical information
- General public
- Free