1) the third harmonic
反电动势三次谐波
1.
This paper introduces a control system of brushless DC motor based on 80C196KB, in which the third harmonic sensing scheme is adopted, and the composing, principle of the system, the function, realizeation of each constitute of electric circuit and the software.
该控制系统采用反电动势三次谐波法检测电机转子位置。
2) harmonic back EMF
谐波反电势
1.
Closed-loop speed control of hybrid step motor using the harmonic back EMF;
利用谐波反电势实现混合式步进电动机速度闭环控制
2.
In this paper, the closed-loop control method of hybrid step motor using the harmonic back EMF is investigated.
研究了利用谐波反电势信号实现混合式步进电动机闭环控制的方法。
3) third harmonic restrained
三次谐波制动
4) third harmonic current
三次谐波电流
5) third harmonic voltage
三次谐波电压
1.
The change of generator power will influence the operation characteristics and set-value calculation of third harmonic voltage based stator-grounding protection.
发电机功率的变化会对三次谐波电压型定子接地保护的动作特性及整定计算产生影响 ;当发电机与升压变之间有断路器时 ,机组并列前后UN3/US3的变化也会对三次谐波电压型定子接地保护的动作特性及整定计算产生影响。
6) third-harmonic power source
三次谐波电源
1.
Experimental study with third-harmonic filters as well as with third-harmonic power sources were conducted.
作者对在变压器中加三次谐波滤波器和三次谐波电源分别进行了实验研究。
补充资料：反电动势
电路中存在的跟外加电压方向相反的电动势。如电动机转动时，电枢线圈中所产生的与外加电压方向相反的感应电动势。电解槽在工作时也存在反电动势，对电解槽所加电压必须大于其反电动势才能使电解槽正常工作。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条