power frequency control

IGBT emerged in early 1980s as a new type of entire-control power electronics transistor. The Induction-heating Power Supply ( ISP) with power of hundreds kilowatt and frequency between 10~ 100 kHz is popularly used in induction-heating field.

IGBT是80年代初出现的新一代全控型电力半导体器件，在感应加热领域生产的功率达数百千瓦、频率10~100kHz的IGBT超音频电源，正得到广泛应用。

The integrated design scheme of the calibration test system presented in this paper introduces the hardware system including radio frequency control module, power control module, I/ O control module and control module as well as test clamp.

本文提出了完整的校准测试系统设计方案，介绍了该系统的硬件系统组成：射频控制模块，电源控制模块，I/O控制模块，系统控制模块和测试夹具；

Automatic frequency control ( AFC) system is used to adjust the frequency of microwave power source to match the inherent frequency of acceleratory tube.

自动频率控制（AFC）系统用于调节微波功率源输出的微波频率，使之与加速管的固有谐振频率匹配。

The application of phase control rectifier with variable frequency in power supplying for train

变频输入的相控整流技术在列车供电中的应用

Field test and strategy analysis of primary frequency control in Yunnan power grid

云南电网一次调频试验工作现状及策略分析

The Automatic Frequency Control of Power System with Serious Impact Load

水火电联合跟踪冲击负荷的频率自动控制

The advantages of frequency speed control in forced draught fan for boiler in power plant are set forth by examples.

结合实例阐明了电站锅炉送风机采用变频调速的优点。

Electronic power frequency control system

电子电源频率调节装置

Adaptive frequency hopping ( AFH) is a new technology that developed in recent ten years, that integrates adaptive frequency control with adaptive power control based on automatic link quality analysis ( LQA).

自适应跳频是近十几年来发展起来的一种跳频通信新技术，是建立在自动信道质量评估基础上，将频率自适应和功率自适应控制相结合的跳频技术。

Expounds the principle of audio frequency power amplifier is designed for manostat, preamplifier, volume control, power amplifier four parts digital power amplifier megaphone.

论述了音频缩小的原理，设计了以稳压电源、前置缩小、音量调理、功率缩小四局部组成的数字功率缩小扩音器。

Power System Load Frequency Feed Forward Control

电力系统负荷频率的前馈控制