1) variable voltage variable frequency
变频调速（VVVF）
2) variable frequency
变频
1.
Study of application of variable frequency hydraulic straight-vibrating sieve;
变频液压直线振动筛的应用研究
2.
Energy saving analysis of the variable frequency circulating water pump in a hot water heating system;
热水供热系统变频循环水泵节能分析
3.
Brake test system incorporating virtual instrument and variable frequency technologies;
基于虚拟仪器和变频技术的制动器试验系统
3) frequency conversion
变频
1.
Dyeing and printing machine synchronization system based on network and frequency conversion technologies;
基于网络和变频技术的印染机械同步系统
2.
Amelioration of frequency conversion drag system in entirely automatism flakeboard production line;
刨花板全自动生产线横锯推板采用变频交流拖动系统的改进
3.
The Application Analysis of Frequency Conversion Timing Technique in Power Plant;
火电厂变频调速技术的应用分析
4) Variable-frequency
变频
1.
Application of DSP to Variable-frequency Control System of Boiler Feed Water;
DSP在锅炉给水变频控制系统中的应用
2.
Application of variable-frequency speed equipment on water supply in uptown;
变频供水设备在小区的应用
3.
The Study on the Control Device for Measuring the Transmission Line Parameters by Variable-frequency Electrical Measurement;
输电线路工频参数变频测量控制系统的研制
5) frequency converter
变频
1.
Optimization of main transport pump and application of frequency converter in main transport pump is studied based on actual engineering.
对主输泵的组合配置和变频器在主输泵上的应用进行了研究,做好主输泵的优化配置和应用变频技术可显著提高管道运行的可靠、高效和经济性。
2.
The paper analyzed the application of constant pressure and frequency converter and varying-speed motor technology in the water injection development of middle-low permeability reservoir taking the water injection booster pump as an object of study.
以中低渗油藏注水开发中增压注水泵为研究对象,剖析了恒压变频和调速电机技术的应用效果。
3.
Based on the analysis of the slurry handling system in a chemical enterprise,two schemes of both high voltage inverter and high-low voltage frequency converter have been put forward.
变频调速技术已经成为现代电力传动技术的发展方向。
6) Inverter
变频
1.
It included inverter and PLC ,the structure,working principle ,design of Fuzzy controller were included,it can settle the traditional PID control problems such as bad stability,difficult to modulate parameter.
它包括变频器和PLC,以及系统的组成、工作原理、模糊控制策略的设计思想,较好地解决了传统PID控制稳定性差、参数调整困难的问题,提高了供水质量,给工农业生产带来了可观的经济效益。
2.
In order to solving emulsification and carbonization of lubricating oil in operation of oil-injected screw compressor with inverter control,experimental study of compressor s cooling system is carried out.
为了解决变频喷油螺杆压缩机运行过程中润滑油的乳化和碳化现象,对压缩机的冷却系统进行了实验研究。
参考词条
补充资料：发电厂给煤机变频调速系统
发电厂给煤机是电厂制粉系统中重要组成部分，是电厂重要的辅助动力设备，其主要任务是为制粉系统磨煤机提供原料。
制粉系统工艺流程图
系统功能框图
根据给煤机稳定运行的重要性，采用冗余控制系统。
变频调速系统电气回路图
电气回路由空气开关、接触器、中间继电器、电流互感器、端子排、电缆等组成。变频器用双回路电源供电，当一路电源工作，则另一路电源作备用电源处于热备用状态，当工作电源失电或发生故障时，自动投入备用电源。
优点：实现软启动，启动电流小且平稳，减少对电网和设备的冲击。能连续无级调节给煤机的速度。给煤机长期运行在30Hz，节约能源。具有多种保护功能，易于维护、维修，符合工厂自动化发展趋势。
根据给煤机稳定运行的重要性，采用冗余控制系统。
电气回路由空气开关、接触器、中间继电器、电流互感器、端子排、电缆等组成。变频器用双回路电源供电，当一路电源工作，则另一路电源作备用电源处于热备用状态，当工作电源失电或发生故障时，自动投入备用电源。
优点：实现软启动，启动电流小且平稳，减少对电网和设备的冲击。能连续无级调节给煤机的速度。给煤机长期运行在30Hz，节约能源。具有多种保护功能，易于维护、维修，符合工厂自动化发展趋势。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。