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Along with the higher requirement of aircraft's generation system proposed, Integrated Starter Generator system appeared on the stage of history which can work as an electric motor and a generator at the same time. This paper talks about a Permanent Magnet Machine (PMM) which is applied as Integrated Starter Generator (ISG) used into the unmanned aerial vehicle (UAV). Permanent Magnet Machine has...
Currently, there is significant attention being paid to the development of high-speed machines including motors and generators. In particular, permanent magnet machines are gaining more traction due to their outstanding efficiency, high power density, small size, low weight, simple mechanical construction, easy maintenance and good reliability. The higher the motor speed, the smaller the electric...
With advantages of low emissions, fuel flexibility, high efficiency and energy saving, micro turbines (MTs) are one of the most important technologies for distributed generated systems (DGSs) [1,2]. With many advantages such as high power density, simple structure, and higher efficiency, high speed permanent magnetic generator systems (HSPGSs) attract more attentions from the world wide researchers...
Compared with the slotted tubular generators, air-cored tubular generator has no attraction force, smaller thrust ripple and lower moving mass. The advantages of high respond speed and high output stability make the air-cored tubular generators to be research focus in recent years. It is used in energy conversion systems of ambient vibrations, free-piston engine, ocean wave energy and so on. And in...
As one of the most important kinds of distributed generation systems, the micro turbine generation system can be flexibly installed near the end user, and becomes an important trend of development in DGS gradually. The high speed permanent magnetic generator (HSPMG) can be properly applied in a micro turbine generation system and benefits the system from high efficiency, high power density, simple...
As a renewable, clean energy, wind energy has attract more and more attention. It has become a common understanding of the world to vigorously develop wind energy. In order to guarantee the safety and reliability for wind power integration operation, it is of great significance to establish an appropriate wind power generator system model and analyze its electromagnetic transient characteristics....
This paper presents a novel integrated stability controller for grid connecting variable-speed variable-pitch wind generator which regards the wind power system stability improvement and negative effect of stability control on wind generator reduction by wind generator power and pitch regulation. According to the full-state or non full-state nonlinear feedback strategy, the controller, which would...
This paper presents a Space-Vector Modulated (SVM) Direct-Torque-Control (DTC) scheme for a direct-drive permanent magnet synchronous generator (PMSG) and a gird converter for wind energy without any position sensor. Direct control of the rotating velocity and amplitude of the stator flux vector allows very fast torque response of the PMSG according to the generator speed. Fixed switching frequency...
The local DC Power Distribution System of More Electric Aircraft is one of the cores of the electric power transmission. Because of some unidirectional devices (diode bridge and anti-run-back diodes), the system is not totally reversible. Some storage and dissipation systems are necessary to store or/and dissipate the returned energy to maintain the DC bus voltage. Power management strategies are...
Corona discharge (CD) and partial discharge (PD) indicate early stages of insulation problems in motors and generators. Early detection of CD/PD will enable better coordination and planning of resources such as maintenance personnel, ordering of parts, etc. Most importantly, one can prevent catastrophic failures during normal operations. In decades, on-line PD measurement has been used to find loose,...
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