例句與用法

1. This motor employs method of changing the pole numbers so as to carry out speed adjustment
   采用單繞組變極方法實現(xiàn)速度變換。
2. Simplex winding double speed asynchronous motor is easiest and widest polechanging control method among the change pole motors
   摘要單繞組雙速異步電動機是變極電機中方法最簡易、應用最廣泛的一種變極調速方法。
3. In factories , it can design the simplex winding multiple - speed motors to change the type of winding attachment about the current single speed motors
   在工廠中，通過對現(xiàn)有的單速電機進行繞組改繞來設計單繞組多速電機。
4. The principles and characteristics of synchronous rectification ( sr ) are given , and advantages of self - driven sr in low power applications is detailed . review of several topologies which incorporate self - driven sr makes the constrains of conventional self - driven sr scheme apparent and thus a new scheme to drive srs is proposed . the developed single - winding self - driven synchronous rectification ( swsdsr ) scheme works properly in topologies that drive symmetrically the transformer ( push - pull , half bridge , . . . ) . it allows for maintaining the srs on even when the voltage in the transformer is zero , which is impossible to do in traditional self - driven approaches
   本文針對低壓/大電流輸出的小功率dc / dc變換器，圍繞著變換器的效率問題，分析了同步整流的原理和特點，重點闡述了自驅動同步整流在低功率場合的優(yōu)勢，在分析比較了多種與自驅動同步整流相結合使用的電路拓撲后，指出常規(guī)的自驅動同步整流方案限制了與之結合使用的電路拓撲的范圍這一局限性，從而給出了一種新穎的單繞組自驅動同步整流方案。
5. And power loss analysis of srs and the layout design related to srs are very important to the proper design . with a small signal mathematic model of half - bridge converter , the relationship between performance of power supply and frequency domain characteristics of the system is analyzed . based on the above study and some simulation the system design is completed
   文中在給出了結合單繞組自驅動方案的對稱半橋變換器穩(wěn)態(tài)原理分析、同步整流管損耗分析暨選擇原則、同步整流管相關電路的布局設計后，建立了對稱半橋變換器的小信號數(shù)學模型，分析了電源系統(tǒng)時域性能指標與頻域特性之間的聯(lián)系，在此基礎上完成了系統(tǒng)的設計。