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Information × Registration Number 0215U001953, 0110U000667 , R & D reports Title The sources of autonomous feed for the fire-prevention water systems popup.stage_title Head Bodnar Grygorij Yosypovych, Registration Date 05-08-2015 Organization L'viv Fire State University of Vital Activity Safety popup.description2 In the program's second phase vipolneniya we reviewed the existing methods of forming the alternating voltage from a power supply with a constant current. On the basis of existing methods of forming AC voltage developed a way to convert the DC voltage from the accumulator battery in the three-phase alternating voltage to power the drive of an induction motor of the water pump of the internal fire water recreation, "Zahar Berkut". A method of converting the voltage and starting the engine provides smooth start-up of the induction motor, which allows you to save the accumulator battery charge is started, and the work of the aqueduct over the estimated time (1 hour). Was created a mathematical model of an autonomous power supply from the batteries of the accumulator and independent inverter voltage starting methods previously told where studied electro-magnetic and electro-mechanical characteristics of an independent source. Research results confirmed the theoretical calculations for the formation voltage dlitilnosti the system and the amount of the accumulator battery. Product Description popup.authors Меньшикова Ольга Володимирівна Шаповалов Олег Валерійович popup.nrat_date 2020-04-02 Close