1) low frequency switch
低频开关
1.
When average current control method is applied to the single-phase dc side series active power filter, the input current distortion is serious during low frequency switch turns on or turns off transient.
当单相直流侧串联型有源电力滤波器采用平均电流控制方法时,输入电流在低频开关切换点存在畸变。
2) Low switching frequency
低开关频率
1.
For solving the cross-coupling problem caused by low switching frequency a new closed-loop variable speed control system which is based on flux trajectory control and different from vector control was introduced.
为加大中压变频器出力,要求降低开关频率,这就带来了PWM波形谐波大的问题。
3) low-speed switch
低速开关
1.
The paper presents that during failure of the electric motor or mechanical transmission unit low-speed switch can be used to provide effective and prompt protection.
简要介绍了在电机或机械传动装置出现故障时,利用低速开关进行有效及时的保护,以维护设备保障生产。
4) low-temperature switch
低温开关
5) high/low switch
高/低开关
6) low-voltage switchgear
低压开关
1.
Fault forecast for low-voltage switchgear cabinet based on fuzzy evaluation
基于模糊评判的低压开关控制柜的故障预测
补充资料：低频
1.指应用于某一技术领域中的最低频率范围。例如，无线电波段中，将30～300千赫范围内的频率称低频;电子放大电路中，将接近音频(20赫兹～2万赫兹)的频率称为低频。
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