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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 density permanent magnet machine, a direct oil cooling strategy for the machine stator is adopted. A stator oil sleeve is designed to separate the machine...
The paper describes the mechanical and thermal design of a high speed, high power density synchronous permanent magnet machine for an aero engine starter generator system with a power rating of 150 kW and maximum speed of 32,000 rpm. As both mechanical and thermal aspects have a direct impact on machine overall performance and weight reduction, a critical design optimisation was carried out. Intensive...
A high speed permanent magnet motor is designed for a flooded industrial pump. Oil in the pump is used to cool the motor. Due to the limitation of space and mass requirement for the application, thermal management is one of the main challenges. This paper describes the thermal management optimization process and design of the machine. Different cooling strategies are applied to cool the machine and...
The paper describes the mechanical and thermal design of a high speed, high power density synchronous permanent magnet machine for an aero engine starter generator system with a power rating of 150 kW and maximum speed of 32,000 rpm. The electrical machine is designed to minimise the weight and maximise the efficiency so both mechanical and thermal aspects are considered. The cooling strategy adopts...
A permanent magnet motor was designed for aircraft traction during the taxiing phase. In order to improve the reliability, the motor was attached to enable direct drive of the wheel without additional gearing. Due to the high torque needed for the aircraft traction, and the space and mass limitations of the wheel environment, the thermal management of the motor presents a big challenge. This paper...
An Electro Mechanical Actuator(EMA) is proposed to replace a conventional hydro mechanical actuator in the rudder of a twin engined commercial aircraft. This paper considers the thermal management of the actuator and investigates passive cooling. The cooling of the EMA motor becomes critical during ETOPS operation, when the aircraft is operated on only one engine. This paper provides design guidelines...
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