Multi electric aircraft is a topic and model that emerged in the late 1980s, with typical representative models including A380 and B787. Today, Wei Kewei's editor will analyze with you some characteristics and advantages of this generation of models.Multi electric aircraft power systemThe development of this technology is inseparable from advances in power electronics, control systems, motor drives, and the development of new technologies for variable speed constant frequency systems. Its main advantage is that the system provides a better starter/generator system. Other advantages include:; Higher reliability, lower recurring costs, and shorter task cycles. The variable speed constant frequency system adopts an AC three-phase synchronous generator and a solid-state converter. Each solid-state converter includes (a) a rectifier unit that converts variable frequency AC voltage to DC voltage, (b) an intermediate circuit, and (c) an inverter that then converts the DC voltage to a three-phase AC constant frequency voltageDC270V contactorIt is a relatively important component, and this technology has always been controlled by Europe and America. The typical variable speed constant frequency principle diagram of the starter/generator system is shown in the figure.

In the power generation mode of the variable speed constant frequency system, the aircraft engine changes speed to provide mechanical input power to the generator. Then the generator supplies the constant frequency voltage of the main bus of the variable frequency AC power supply of the (bidirectional) power converter that provides AC power. In motor mode, the constant frequency AC system provides input power to the power system through a bidirectional power converter as a machine starter for aircraft engines. Synchronous, inductive, and switched reluctance motors are competitors to variable speed constant frequency starting/generating systems. The application of these machines in aircraft power systems is mainly based on weight, power density, efficiency, control complexity and characteristics, design complexity and manufacturing, reliability and thermal stability, as well as economy. If you need to learn more about aircraft power and electricity related information, you can contact the engineers at Wekeway, who will provide you with more professional services.