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The principle and function of high-voltage soft starter
Foreword: High-voltage soft starter, also known as medium and high-voltage solid-state soft starter (Medium, High-voltage solid-state soft starter), is a new type of intelligent motor starter, which consists of isolating switch, fuse, control transformer, control module, thyristor Module, high-vo...Read More -
Significance, principle function and purpose of reactive power compensation
It is very easy for people to understand effective power, but it is not easy to deeply understand ineffective power. In a sinusoidal circuit, the concept of reactive power is clear, but in the presence of harmonics, the definition of reactive power is not clear. However, the concept of reactive p...Read More -
Purpose and implementation means of dynamic reactive power compensation device
In the traditional reactive power compensation method in the substation system, when the reactive load is large or the power factor is low, the reactive capacity is increased by investing in capacitors. The main purpose is to increase the power of the substation system under the condition of sati...Read More -
How to deal with the voltage sag
A voltage sag can be understood as a sudden drop in voltage followed by a short return to normal. So how to deal with the phenomenon of voltage sag? First of all, we should deal with it from the three aspects of generating voltage sag and causing harm. The voltage sag is generally a problem of th...Read More -
How are harmonics generated in power systems
Harmonics in the power system come from electrical equipment, that is to say, from generating equipment and electrical equipment. 1.Harmonic source (the harmonic source at the power supply end generally points to the electrical equipment that injects harmonic current into the public grid or gene...Read More -
Harmonic filter treatment plan for intermediate frequency furnace
In order to reduce the pulse current pollution caused by the intermediate frequency furnace, China has adopted multi-pulse rectifier technology, and developed several intermediate frequency furnace equipment such as 6-pulse, 12-pulse, and 24-pulse intermediate frequency furnaces, but because the ...Read More -
Causes of Harmonics in Intermediate Frequency Furnaces and Solutions
With the rapid development of our country’s economy, especially the rapid growth of mining, smelting and casting industries in recent years, the demand for electricity is increasing. Among them, the intermediate frequency smelting furnace rectification equipment is one of the largest harmon...Read More -
The harm of harmonics to frequency converters, the harmonic control scheme of frequency converters
Frequency converters are widely used in the variable speed transmission system industry in industrial production. Because of the power switching characteristics of the inverter rectifier circuit, a typical discrete system load is generated on its switching power supply. The frequency converter us...Read More -
Reactive Power Compensation and Harmonic Control Scheme for Rolling Mill Equipment
The main transformer of the rolling mill power distribution system is a rectifier transformer with a voltage of 0.4/0.66/0.75 kV, and the main load is a DC main motor. Because the power transmission and distribution of the user’s extruder rectifier device generally uses two types of six-pul...Read More -
Production line harmonic control scheme
At present, the best harmonic control ability in the market is the APF series low-voltage active filter developed and manufactured by Hongyan Electric. This is a power electronic component based on current monitoring and current introduction technology. The harmonic current component to be compen...Read More -
Monocrystalline silicon furnace harmonic control scheme
The single crystal furnace is a kind of equipment that uses high-purity graphite heater to melt polycrystalline raw materials such as photovoltaic cells in a rare gas environment, and uses the Czochralski method to grow a dislocation-free single crystal. Single crystal furnaces are commonly used....Read More -
High-power UPS harmonic control scheme
In which fields are UPS power supplies widely used? UPS power supply system equipment is the first type of information equipment, mainly used in the security protection of computer information systems, communication systems, mobile data network centers, etc. In the big data industry, big data ind...Read More