On the base of the research result mentioned above , a novel three - phase combined asi is proposed hi this paper , which is made up by three single - phase asi 在以上对单相逆变器研究工作的基础上，进一步研究了正激直流环节三相组合式软开关逆变器。
Proximity switches , photoelectric sensors ; flow sensors , pressure sensors , temperature sensors , encoders , speed monitors , as - i bus systems , plcs for vehicle 近接开关光电开关流动监视器速度监视器压力感应器温度感应器编码器asi总线系统车辆专用plc
A cascade asi experimental prototype with instantaneous control strategy is accomplished . all the guide lines attain the expected request in the all - sided tests 制作了一台瞬时值控制的级联型航空静止变流器，进行了系统的电气性能测试，各项指标都达到预期性能。
Because of his structure simplicity and easy operation , it occupies 60 % quota in european markets . however , such field of out country leaves far behind the world level Asi总线是一种设备级的现场总线，它结构简单、操作方便，目前在欧洲已经占有了60 %的市场份额。
This thesis presents the research on dc / dc converter for high voltage dc ( hvdc ) input aeronautical static inverter ( asi ) . the converters presented are composed of the ttfc topology cell 本文以双管正激变换器为基本拓扑单元，针对高压直流输入航空静止变流器dc dc级进行了研究。
The system proves the high power density and the flexibility . the reliability , the expand ability and the maintenance of asi system are effectively improved 该电路具有简单可靠、均流精度高、体积小、重量轻和组合方便等优点，可以有效地提高航空静止变流器的可靠性、可扩展性及可维护性。
The asi parallel system in this thesis is presented based on common voltage loop control . the system is made up of five paralleled modules based on high - frequency zero - voltage - switch 1kva asi 本文采用公用电压外环方案，实现了五台1kva基于高频零电压软开关航空静止变流器模块的并联输出。
Each single - phase asi works separately . thus modular design can be realized conveniently . the analysis shows that it has good performance even with unsymmetrical load 每一相静止变流器既可用作单相静止变流器，也可以通过适当的外部控制组合成三相静止变流器，便于模块化设计，可维修性高。
The thesis first illustrates the characteristics and asi system , then analyzes its transmitting system in detail and presents its design requirements according to its electric and functional specification 论文首先介绍了asi系统的特点，然后详细地分析它的传输系统，针对各种电气和功能特性给出了它的设计要求。
The rotational converter could not satisfy with the requirement anymore . compared with the rotational converter , asi is better in the efficiency , power density , reliability and electrical quality 与传统的旋转变流机相比， asi具有效率高、功率密度高、无噪声、可靠性高、寿命长、供电品质好、维护方便等优点。
