All Outputs (78)

A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve (2017)
Conference Proceeding

This paper proposes a semi-flooded cooling concept for a high speed machine design. The electrical machine considered is for an aircraft starter-generator system where power density and efficiency are crucial. In order to achieve the high power densi... Read More about A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve.

Maximum torque-per-amp tracking control of saturated induction motors (2017)
Conference Proceeding

An improved maximum torque per Ampere (MTPA) controller for induction motor (IM) drives is presented. The proposed MTPA field oriented controller guarantees asymptotic torque tracking of smooth reference trajectories and maximises the torque per Ampe... Read More about Maximum torque-per-amp tracking control of saturated induction motors.

Assessment of torque ripple minimization techniques for aircraft switched reluctance machine starter/generator (2017)
Conference Proceeding

This paper presents an assessment of different torque ripple minimization techniques for more electric aircraft Switched Reluctance Machine (SRM) starter/generator (S/G). SRM is one of the most popular potential candidates for future aircraft S/G. SR... Read More about Assessment of torque ripple minimization techniques for aircraft switched reluctance machine starter/generator.

A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems (2017)
Conference Proceeding

The neutral point voltage balancing issue for three level Neutral point clamped (NPC) converter has been extensively investigated recently. Different solutions to balance the neutral point have been proposed. However the proposed solutions so far eit... Read More about A Novel Space Vector Modulation Technique For Three Level NPC Converters Within Aircraft Starter Generator Systems.

Stability assessment of a droop-controlled multi-generator electrical power system in the more electric aircraft using parameter space approach (2017)
Conference Proceeding

This paper investigates the dynamic stability of a droop-controlled multi-generator system in the more electric aircraft (MEA). Based on the developed state-space model of the potential dc electrical power system (EPS) architecture, the stability bou... Read More about Stability assessment of a droop-controlled multi-generator electrical power system in the more electric aircraft using parameter space approach.

Robust indirect field oriented control of induction generator (2017)
Conference Proceeding

The paper presents a novel robust field oriented vector control for induction generators. The proposed controller exploits the concept of indirect field orientation and guarantees asymptotic DC-link voltage regulations when DC-load is constant or slo... Read More about Robust indirect field oriented control of induction generator.

History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels (2016)
Conference Proceeding

Due to developments in power electronics, electric machines, energy storage and control, electric propulsion and integrated electrical power systems have become major trends for commercial and naval vessels. This is mainly due to the fact that the us... Read More about History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels.

Analytical modelling approach for switched reluctance machines with deep saturation (2016)
Conference Proceeding

This paper presents an analytical modelling approach for Switched Reluctance Machines (SRMs) with a wide saturation range. There are many existing analytical modelling approaches in literature that give good accuracy, however most do not consider mod... Read More about Analytical modelling approach for switched reluctance machines with deep saturation.

Flux weakening control of Permanent Magnet Machine based aircraft electric starter-generator (2016)
Conference Proceeding

This paper presents control analysis and design for an aircraft electric starter-generator system based on a Permanent Magnet Machine (PMM) operated in Flux-Weakening mode (FW). The focus is on detailed stability analysis which helped to discover an... Read More about Flux weakening control of Permanent Magnet Machine based aircraft electric starter-generator.

Conceptual design of battery energy storage for aircraft hybrid propulsion system (2016)
Conference Proceeding

The paper presents a conceptual design approach for Energy Storage (ES) devices in advanced hybrid propulsion system for small aircrafts. The study targets operational improvement and reduction of fuel consumption for different flight missions. Power... Read More about Conceptual design of battery energy storage for aircraft hybrid propulsion system.

An enhanced secondary control approach for voltage restoration in the DC distribution system (2016)
Conference Proceeding

The paper will deal with the problem of establishing a desirable power sharing in multi-feed electric power system for future more-electric aircraft (MEA) platforms. The MEA is one of the major trends in modern aerospace engineering aiming for reduct... Read More about An enhanced secondary control approach for voltage restoration in the DC distribution system.

Stability assessment of a high speed permanent magnet machine based aircraft electrical power system (2016)
Conference Proceeding

Starting an aircraft engine with an electrical machine has been one of the major trends for future aircraft. This paper studies the stability of a permanent-magnet machine (PMM) based aircraft starter/generator (S/G) system. Using control-to-output t... Read More about Stability assessment of a high speed permanent magnet machine based aircraft electrical power system.

Dynamic output feedback linearizing control of saturated induction motors with torque per ampere ratio maximization (2016)
Conference Proceeding

The paper presents a novel maximum torque per Ampere (MTA) controller for induction motor (IM) drives. The proposed controller exploits the concept of direct (observer based) field orientation and guarantees asymptotic torque tracking of smooth refer... Read More about Dynamic output feedback linearizing control of saturated induction motors with torque per ampere ratio maximization.

Implementation of a multi-level Power Electronic Inverter library in Modelica (2014)
Conference Proceeding

This paper presents a newly developed Power Electronic Inverter library in Modelica. The library utilises a multi-level approach with increasing model complexity at progressively higher levels. All levels are fully interchangeable so as to provide a... Read More about Implementation of a multi-level Power Electronic Inverter library in Modelica.

Wind turbine-energy storage control system for delivering constant demand power shared by DFIGs through droop characteristics (2009)
Conference Proceeding

This paper investigates embedding Energy Storage (ES) with multiple wind turbines in order to deliver to the grid a smooth and constant power as demanded by the system operator. The demand power is shared by DFIGs proportional to their ratings utiliz... Read More about Wind turbine-energy storage control system for delivering constant demand power shared by DFIGs through droop characteristics.

More electric aircraft starter-generator system with utilization of hybrid modulated model predictive control
Conference Proceeding

The current trend for future aircraft is the adoption of the More Electric Aircraft (MEA) concept. The electrical based starter-generator (S/G) system is one of the core ideas from the MEA concept. The PI based control scheme has been investigated in... Read More about More electric aircraft starter-generator system with utilization of hybrid modulated model predictive control.

Nonlinear aircraft engine model for future integrated power center development
Conference Proceeding

Aircraft engines, the prime source of on-board power, play a vital role within the electrical power generation system. In literature these are considerably simplified to rudimentary engine speed. In this paper, a nonlinear zero-dimension (0-D) order... Read More about Nonlinear aircraft engine model for future integrated power center development.

Application of a MILP-based Algorithm for Power Flow Optimisation within More-Electric Aircraft Electrical Power Systems
Conference Proceeding

This paper presents in detail how Mixed-Integer Linear Programming (MILP) can be used to solve the optimal power flow problem of Electrical Power Systems (EPSs) within More-Electric Aircraft (MEA). Continuous linear functions, integer variables and p... Read More about Application of a MILP-based Algorithm for Power Flow Optimisation within More-Electric Aircraft Electrical Power Systems.