下垂特性 meaning in English

droop characteristic
drooping characteristics
droopingcharacteristics

That is using reactive info to regulate the amplitude of voltage to achieve reactive power equilibrium and using active info to regulate the phase of the voltage to achieve active power equilibrium
并联各单元输出无功功率进行综合后，对各单元输出电压幅值进行调节；对输出有功功率，仿效电机的有功下垂特性，以实现有功自动均衡。
First , it analyzes the working principle and some features of the system , such as the circulating current characteristics , power distribution characteristics , and characteristics about closed loop regulation of voltage . then it goes on to the study of some typical control methods , and designs on this basis , a parallel controller using a synchronization control strategy of racing to merging and a load - sharing strategy combined with feedback control and drooped control
文中，首先通过建立系统的数学模型，分析了逆变电源并联运行的工作原理以及并联系统的一些主要特性，包括它的环流特性、功率特性和电压闭环调节特性；在此基础上，又研究了几种典型的并联运行控制方式；然后，采用抢占与并发相结合的同步控制方式和反馈与下垂特性相结合的负载均分控制设计了并联控制器。