The analysis of the control system for the bearingless induction electric motor

The paper deals with the problem of the actuation system in airborne application. Two problems are important. First, the frequency bandwidth of elements should be as wide as possible. The second, the applied actuators have the disadvantageously property, e.g. the overall efficiency, the friction forces, heat abstraction, the high complexity. The main element of the actuator is the bearingless induction electric motor. The construction of the motor is compound the active magnetic bearing and the more electric technology. So the new motor eliminates the disadvantages of the conventional motor. In the paper there are presented the new construction of the bearingless motor, models radial magnetic forces and torque. There are presented the simulation results of bearingless motor with control system, too

Nacelle Actuation System with Linear Electric Motor

Keywords: actuator, linear motor, magnets he modern aircraft need digital active control system to stabilization angular orientation in the air space and control the trajectory of flight. The aircraft are designed as more electric. Now, the hydraulic and pneumatic systems are replaced by electromechanical units. The electrohydraulic actuators are replaced by electromechanical actuators with linear tubular electric motor. This kind of actuator assures high reliability, good dynamic property and strong thrust forces

The analysis of “more electric engine” technology to improve the environmental performance of aircraft jet engine

In aviation, there is now a dynamic development of aircraft equipment related to the implementation of “more electric aircraft” technology. This concept offers the ability to improve the use of on-board systems, e.g. environmental operating conditions of aircraft jet engine. This technology is named “more electric engine”. It allows the use of magnetic levitation technology at engine turbine shaft bearing. The development of this technology relates to the dynamic change of electronic power systems for civilian transport aircraft, the use of adaptive control methods and new materials in aviation technology. All technologies are improved the environmental operating conditions of the on-board system, e.g. operational flexibility, technological potential growth. [1] In the paper will be presented the TS-21 aircraft jet engine. This engine is modernized in the Jet Engine Laboratory of the Military University of Technology. The paper is presented a digital engine control system, the operating parameters acquisition system and magnetic bearing system. It is described the concept of active magnetic suspension of the turbine engine shaft support. The magnetic suspension technology allows eliminate mechanical bearing arrangements with an oil installation, friction forces and classical, mechanical bearings. The paper contains the simulation and experimental results of a modernized jet engine TS-21

The analysis of “more electric engine” technology to improve the environmental performance of aircraft jet engine

In aviation, there is now a dynamic development of aircraft equipment related to the implementation of “more electric aircraft” technology. This concept offers the ability to improve the use of on-board systems, e.g. environmental operating conditions of aircraft jet engine. This technology is named “more electric engine”. It allows the use of magnetic levitation technology at engine turbine shaft bearing. The development of this technology relates to the dynamic change of electronic power systems for civilian transport aircraft, the use of adaptive control methods and new materials in aviation technology. All technologies are improved the environmental operating conditions of the on-board system, e.g. operational flexibility, technological potential growth. [1] In the paper will be presented the TS-21 aircraft jet engine. This engine is modernized in the Jet Engine Laboratory of the Military University of Technology. The paper is presented a digital engine control system, the operating parameters acquisition system and magnetic bearing system. It is described the concept of active magnetic suspension of the turbine engine shaft support. The magnetic suspension technology allows eliminate mechanical bearing arrangements with an oil installation, friction forces and classical, mechanical bearings. The paper contains the simulation and experimental results of a modernized jet engine TS-21

Radial Magnetic Bearings for Rotor–Shaft Support in Electric Jet Engine

New technologies are being developed to elaborate cutting-edge electrical jet engines to replace classical constructions. These new concepts consider the possibility of using electrical machines both as starters and generators, as well as suspension systems for the turbine shafts of aircraft engines. The paper will present mathematical analysis regarding active magnetic bearing (AMB) implementation for rotor–shaft support. This technology allows the elimination of friction forces between cooperating kinematic pairs (stator and rotor), reduces the adverse effects of classic bearings, and increases operating speed range and an operational susceptibility. The mathematical and numerical analysis of active magnetic suspension systems are presented. Next, a comparison of the theoretical studies using Comsol Multiphysics software and its experimental verification are described. A discussion regarding the mathematical analysis and experimental effects is also provided. The conclusion summarizes the theoretical and experimental features of heteropolar radial active magnetic bearings in new electric aircraft engines