Articles
Automated electric drive of a shearer
Coal mining time-consuming work, imposes high reliability requirements on equipment and mechanisms. Reforms of the general mechanization of the coal industry are designed to increasing profits and the amount of coal mined to a significant level by two, three times. Productivity and high speed of work in this area are shown by OK - shearers designed for coal cleaning slaughter
How to repair inverters and frequency converters?
An inverter is a device that can convert DC voltage to AC voltage. As a rule, the source of constant voltage is
The use of frequency converters in the energy sector
When they talk about saving energy at a power plant, then the first thing they look at is large consumers of energy resources, power over 1 MW feed pumping units, draft machines.
What data is needed to select and replace an old electric motor with a new one?
How to choose the right electric propulsion unit for optimal and trouble-free operation of the engine load"? How to increase the reliability of the system in general? What conditions should be followed first? How to reduce the starting current, increase the starting torque or ensure a soft start?
Modernization of the electric drive solution: installation of a frequency converter
Frequency converter devices are quite popular and provide significant savings in electrical energy. But it is important to carefully analyze the improved aggregates in order to ensure that
How to protect equipment from electromagnetic distortion of frequency converters?
Frequency converters based on semiconductors work on the principle of converting non-linear components with relay properties. When these elements are switched, a wave-like transformation of current or voltage occurs in the circuit. This leads to distortion in