Frequency converter
Study on Energy-cycle Power Asynchronous Dynamometer System Based on LabVIEW
With the technology of AC Variable-frequency is more and more developed and applied, power dynamometer through the implementation of the Variable-frequency is the most of advanced dynamometer system, using virtual instrument can fast and efficiently develop the modularized, intelligent, high-integration and simple motor test system to precisely and dynamically testing the motor.This paper researches the [...]
Research on Aplication of Air Cooling Fan Frequency Converter to Dalate Power Plant 2×600MW Generators
Direct air-cooling unit of a thermal power has the operational characteristics of saving energy and the advantages of improving fans and electromotors.This paper, firstly ,focuses on the operational characteristics and structural features of the 600MW direct air-cooling units,,giving the selection principle for backpressure of a direct air-cooling Unit , proving that external impact of effecting [...]
The Development of Electrical Motor Frequency Conversion Timing Experiment System Based on PLC
With the power electronics and control technology continues to evolve, AC frequencyconversion speed technology replaced the DC Speed Control Technology has been widelyused in the dragging fields; Programmable Logic Controller (PLC) is powerful、easy to useand high reliability, has often been used as a field data collection and device control.；Configuration software is a software tool that [...]
Study on Frequency Converter Design for Fan and Pump
Nowadays in Chinese industrial fields, there are a lot fans and pumps which can be retrofitted with frequency variable converter so as to save energy. But lack of standard converters especially for these application, which need converters directly used by end user in China mainly. In this paper, combining the frequency converter development project involved, [...]
Flameproof Variable Frequency Variable Speed Device Developed
Variable frequency speed regulation because its no matter from technical indicators and economic indicators to consider are exchanges in good speed regulation system speed in control system, which plays an important part in the field in the energy aspect, the state variable frequency speed regulation as vigorously develop project, thus becomes a modern inverter power [...]
Study on Static Shore Power Supply
With the rapid development of China’s shipbuilding industry, it has more and more export orders of marine vessels; At the same time with the quickly economic development and high-speed continuous expansion of foreign trade, more and more foreign ship came to our port for operating or transiting or maintaining. When the export of ships loaded [...]
Study on Synchronised Raising and Lowering System of Ship Draft Testing Gate of Three Gorges
The Yangtze River is the golden waterway of our country, it connect the three major economic zones in the southwest, central, eastern of China as a link. And in the whole Yangtze River Waterway, Three Gorges plays a irreplaceable center role to the maritime security. But these yeas, the Super-draft ship is more and more [...]
Analyzes the form of Harmonic and Afford Several Methods to Prevent Harmonic for Yangqu Compressor Station of the Shanjing Pipeline
With the development of technology and the gradual increase of industrial production technology, the frequency converter is being used more and more extensive, for example, LCI are very popular. At the same time, the problem of high-frequency harmonics caused by electromagnetic interference and pollution problems is more and more prominent. The Yangqu Compressor Station of [...]
Pre-pump Frequency Control System Design
In order to increase the recovery ratio of oil field, the water injection is a mature and useful method. Whereas there still is a great gap of our water injection pump between which of abroad, this situation result in a low efficiency of water injection and high power consume. In order to change this condition, [...]