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• W4385958098 abstract "The purpose of this work is to develop a system for starting a gas turbine engine (GTE) of a helicopter, which implements interconnected control of the parameters of the current consumed from the on-board battery and the process of setting the speed by means of a valuer, which allows to optimize the dynamic characteristics of the system and increase the time spent on the energy resource of the battery. The goal was achieved in a double-circuit single-integrating electric drive system, which is astatic in current and static in speed, which corresponds to the requirements for the launch system of the GTE helicopter. As a result of the analysis of the transient characteristics of the system by current, the conditions for the existence of aperiodic, boundary, oscillatory modes, as well as the regularities of changes in the derivative current in these modes, are obtained. The magnitude of astatism by velocity and its relationship with the pattern of change in the output voltage of the velocity setter have been established. As a result of the analysis of the patterns of change in the derivative current, its minimum values for various setting parameters of the proportional regulator of the speed circuit at the time intervals of the transient characteristic have been established. It is proposed to form a transient characteristic of the electric drive system by current in three modes. Its initial section must be formed in the boundary mode, the next -in a weakly oscillatory mode. The third section should correspond to the adjustment of the regulator to a modular optimum. For the practical implementation of the proposed principle of forming the transition characteristic of the electric drive system, it is necessary to include a proportional regulator with a relay law of changing the setting parameter in the speed circuit. An analysis of the transient characteristic for current is carried out, taking into account the discrete nature of the change in the setting of the speed circuit regulator. Its comparison withthe transitional characteristic corresponding to the optimum modulo is carried out. It is established that the transient characteristicof the electric drive system with a relay regulator of the speed circuit differs from the transition characteristic tuned to the modular optimum, the absence of overregulation and smaller differences of the derivative at the interval of its existence. Thepresence of a speed specifier that allows you to stabilize the dynamic current of the electric motor and the low drops of itsderivative during the start-up of the GTE create conditions for a longer consumption of the limited energy resource of the on-board battery of the helicopter." @default.
• W4385958098 created "2023-08-18" @default.
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• W4385958098 date "2023-01-01" @default.
• W4385958098 modified "2023-10-17" @default.
• W4385958098 title "ONE-TIME INTEGRATING DC ELECTRIC DRIVE SYSTEM FOR LAUNCHING A HELICOPTER GAS TURBINE ENGINE" @default.
• W4385958098 doi "https://doi.org/10.25140/2411-5363-2023-1(31)-126-137" @default.
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