Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
ANALYSIS OF THE EXPERIMENTAL INVESTIGATION MANAGEMENT METHODS OF THE NETWORK ASYNCHRONAL ENGINE
Abstract:
Experimental research of asynchronous motor of a network pump of heating networks with the capacity of 160 kW was carried out. Electrical circuitry for connection of a network pump during tests and a control circuit are resulted. During the experiment measurements of power consumption, current and power factor were performed. Possible options for managing the engine under real-life conditions are considered. Asynchronous motors with short-circuited rotors are a fairly common element of complex electromechanical and electrical systems thanks to their simplicity and reliability. In the article a comparative analysis of the loading of the asynchronous motor is performed at the control of the choke and frequency converter. It has been determined that when the water consumption is 35 tons per hour, the required active power is 160 kW at a throttle control and 60 kW in frequency control. Thus, frequency control allows you to reduce the required power of the asynchronous motor by about 60%. This reduces the cost of electricity, which in turn entails a reduction in losses. It has been experimentally proved that the use of an adjustable frequency electric drive allows you to save energy by eliminating unproductive energy costs in throttle valves. The use of frequency converters improves the quality of control of the asynchronous motor. In the energy saving mode, the frequency converter automatically tracks current consumption, calculates the load and reduces the output voltage. Managing frequency converters is more cost effective and financially attractive. This conclusion was made after an analysis of the economic calculation. The payback period was less than a year, and the economic effect of the introduction of about 1413 UAH per shift.
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References
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Published:
Last download:
24 Sept 2018

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