This paper presents a thermal analysis of a high speed switched reluctance starter/generator SR Starter/Generator for the More Electric Aircraft, the average torque is kept at least 15 N.m and the speed drives up to 27000 rpm within 15 s in [4]. The Finite Element Analysis FEA method was used to validate the torque-speed characteristic in starting mode. Direct water cooling stator yoke s were implemented by simulation and experimental method. Online turn on/off angles are controlled in wide range speed and torque. In order to obtain maximum speed and torque with high power-torque density, the phase current density is from 20 to 25 A/mm2 therefore cooling system method is big chanllenge. This paper describes the precise estimation and measurement method of the losses and temperature distribution in a 30 kW, 50,000 rpm switched reluctance machine. Firstly, a core loss model was based on finite element analysis. Secondly, those losses were applied to a thermal analysis model including a liquid stator cooling to calculate the temperature distributions in different
materials of SRM
This paper presents a thermal analysis of a high speed switched reluctance starter/generator SR Starter/Generator for the More Electric Aircraft, the average torque is kept at least 15 N.m and the speed drives up to 27000 rpm within 15 s in [4]. The Finite Element Analysis FEA method was used to validate the torque-speed characteristic in starting mode. Direct water cooling stator yoke s were implemented by simulation and experimental method. Online turn on/off angles are controlled in wide range speed and torque. In order to obtain maximum speed and torque with high power-torque density, the phase current density is from 20 to 25 A/mm2 therefore cooling system method is big chanllenge. This paper describes the precise estimation and measurement method of the losses and temperature distribution in a 30 kW, 50,000 rpm switched reluctance machine. Firstly, a core loss model was based on finite element analysis. Secondly, those losses were applied to a thermal analysis model including a liquid stator cooling to calculate the temperature distributions in different
materials of SRM