EPE Association: EPE 2019 - LS4e: High-Performance Drive Systems

EPE 2019 - LS4e: High-Performance Drive Systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2019 ECCE Europe - Conference > EPE 2019 - Topic 04: Electrical Machines and Drive Systems > EPE 2019 - LS4e: High-Performance Drive Systems

   [return to parent folder]

   A Fully-Integrated Fault-Tolerant Multi-Phase Electric Drive for Outboard Sailing Boat Propulsion
By Sandro CALLIGARO [View]
[Download]

Abstract: Marine transportation electrification is a technology process which is presently transforming large cruise and cargo ships, mega-yachts and military vessels. The proposed paper reports on a research project intended to fully electrify sailing boats by replacing the traditional internal combustion engine, used for maneuvering and emergency or weak-wind navigation, with an electric battery-fed fully-integrated outboard propulsion system, based on a four multi-three phase machine. The developed technology combines the propeller, the electric machine as well as the control and power-electronics apparatus into a compact, bidirectional and fully-integrated electric drive. An innovative design procedure for the electric machine windings allows a complete magnetic decoupling of each three-phase sections. An innovative control technique is also introduced, allowing complete decoupling of the control action among the different three-phase sections of the machine in case magnetic coupling is present, i.e. with a standard machine design. The main stages and aspect of the technology developments are being illustrated in the proposed paper along with the results achieved in the prototype design, construction and testing.

   An Intelligent Diagnostic Method for Permanent Magnet Synchronous Motors (PMSM) in the Electric Drive of Autonomous Vehicles
By Tunan SHEN [View]
[Download]

Abstract: In highly automated electric vehicles, the reliability of electrical powertrain system is very important. Acritical failure in the powertrain system, e.g. electric machine, would lead to breakdown of the vehicle.To avoid this dangerous situation, the critical faults should be detected at an early stage. This paperfocuses on three common faults in the stator of a permanent magnet synchronous machine (PMSM).Based on analytical models, the physical behaviors of the electrical machine within these three faults areanalyzed. Then, a data-driven diagnostic method, artificial neural network(ANN), to detect and classifythese faults is presented. Simulation data of electric machine under healthy and faulty conditions as wellas at different operating points are used to train the ANN model. The three phase currents of PMSM andthe inverter input current are selected as input signals of model. Various features in time domain(e.g.average, maximum,...) and frequency domain(e.g. 2nd, 3rd harmonics) are extracted from the selectedsignals. The result shows that the fault diagnostic model is capable of classifying the faults with nearperfect accuracy over 98\%, even in case of slight fault. Finally, a driving cycle simulation is used tovalidate the robustness of the ANN model in dynamic driving situations.

   Emulating pump system static head using PID-controlled flow-regulating valve
By Aleksi SIMOLA [View]
[Download]

Abstract: Empirical verification of novel energy efficient control methods and soft sensors for variable-speed-driven pump systems often requires the presence of system static head, which is not readily available inall test setups. This paper proposes a method for emulating the static head of a pump system with a flow-regulating valve.

   Possibilities and limitations of wide bandgap transistors in high-speed electrical drives
By Jonas MILLINGER [View]
[Download]

Abstract: In this paper, an inverter with wide bandgap transistors was designed, experimentally evaluated and compared to a conventional IGBT-based inverter in a three-phase slotless PM motor drive. Using the developed inverter, GaN and SiC transistors (650 V) were experimentally tested using switching frequencies up to 48 kHz. Despite operation at significantly higher switching frequencies, the inverter efficiency was increased from approximately 90 to 95 \% by using wide band-gap transistors. Furthermore, a system weight reduction of up to 50 \% was enabled due to the elimination of the inductive filter and use of a smaller heatsink (due to lower losses). By combining the wide band-gap technology with a new slotless 4-pole motor type, the total system losses can be reduced by more than 30 \%.

EPE 2019 - LS4e: High-Performance Drive Systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2019 ECCE Europe - Conference > EPE 2019 - Topic 04: Electrical Machines and Drive Systems > EPE 2019 - LS4e: High-Performance Drive Systems
	[return to parent folder]

	A Fully-Integrated Fault-Tolerant Multi-Phase Electric Drive for Outboard Sailing Boat Propulsion By Sandro CALLIGARO	[View] [Download]
Abstract: Marine transportation electrification is a technology process which is presently transforming large cruise and cargo ships, mega-yachts and military vessels. The proposed paper reports on a research project intended to fully electrify sailing boats by replacing the traditional internal combustion engine, used for maneuvering and emergency or weak-wind navigation, with an electric battery-fed fully-integrated outboard propulsion system, based on a four multi-three phase machine. The developed technology combines the propeller, the electric machine as well as the control and power-electronics apparatus into a compact, bidirectional and fully-integrated electric drive. An innovative design procedure for the electric machine windings allows a complete magnetic decoupling of each three-phase sections. An innovative control technique is also introduced, allowing complete decoupling of the control action among the different three-phase sections of the machine in case magnetic coupling is present, i.e. with a standard machine design. The main stages and aspect of the technology developments are being illustrated in the proposed paper along with the results achieved in the prototype design, construction and testing.

	An Intelligent Diagnostic Method for Permanent Magnet Synchronous Motors (PMSM) in the Electric Drive of Autonomous Vehicles By Tunan SHEN	[View] [Download]
Abstract: In highly automated electric vehicles, the reliability of electrical powertrain system is very important. Acritical failure in the powertrain system, e.g. electric machine, would lead to breakdown of the vehicle.To avoid this dangerous situation, the critical faults should be detected at an early stage. This paperfocuses on three common faults in the stator of a permanent magnet synchronous machine (PMSM).Based on analytical models, the physical behaviors of the electrical machine within these three faults areanalyzed. Then, a data-driven diagnostic method, artificial neural network(ANN), to detect and classifythese faults is presented. Simulation data of electric machine under healthy and faulty conditions as wellas at different operating points are used to train the ANN model. The three phase currents of PMSM andthe inverter input current are selected as input signals of model. Various features in time domain(e.g.average, maximum,...) and frequency domain(e.g. 2nd, 3rd harmonics) are extracted from the selectedsignals. The result shows that the fault diagnostic model is capable of classifying the faults with nearperfect accuracy over 98\%, even in case of slight fault. Finally, a driving cycle simulation is used tovalidate the robustness of the ANN model in dynamic driving situations.

	Emulating pump system static head using PID-controlled flow-regulating valve By Aleksi SIMOLA	[View] [Download]
Abstract: Empirical verification of novel energy efficient control methods and soft sensors for variable-speed-driven pump systems often requires the presence of system static head, which is not readily available inall test setups. This paper proposes a method for emulating the static head of a pump system with a flow-regulating valve.

	Possibilities and limitations of wide bandgap transistors in high-speed electrical drives By Jonas MILLINGER	[View] [Download]
Abstract: In this paper, an inverter with wide bandgap transistors was designed, experimentally evaluated and compared to a conventional IGBT-based inverter in a three-phase slotless PM motor drive. Using the developed inverter, GaN and SiC transistors (650 V) were experimentally tested using switching frequencies up to 48 kHz. Despite operation at significantly higher switching frequencies, the inverter efficiency was increased from approximately 90 to 95 \% by using wide band-gap transistors. Furthermore, a system weight reduction of up to 50 \% was enabled due to the elimination of the inductive filter and use of a smaller heatsink (due to lower losses). By combining the wide band-gap technology with a new slotless 4-pole motor type, the total system losses can be reduced by more than 30 \%.