PARAMETRIC FREQUENCY GENERATOR ON NONCOLLINEAR MAGNETIC FIELDS
DOI:
https://doi.org/10.15802/stp2019/166623Keywords:
parametric frequency generator, noncollinear magnetic fields, powerful impulse noises, protective devise, lightning discharges, lightning, stabilized power supplyAbstract
Purpose. The article is aimed to study a parametric frequency generator on noncollinear magnetic fields, which performs the functions of a stabilized power source and means of protection against the effects of powerful impulse noises in the form of switching overvoltages and lightning discharges. Methodology. To carry out experimental studies, a prototype model of a parametric generator was fabricated. A number of studies were carried out to determine the optimal parameters of the pump circuits and the circuit of the device, in which the best energy characteristics and maximum output power are achieved with stable generation in the system. Findings. The authors proved the importance to develop a means of protecting signaling equipment, centralization and blocking from the effects of powerful impulse noises. The developed construction of the device completely eliminates the transformation of energy, it means the penetration of noise from the input to the output. As a result of the experimental studies, the optimal parameters of the generator circuits, which provide its best energy characteristics, were determined. Originality. The device of the parametric generator, which has energy-consuming elements in its design, has been improved, this significantly improves the energy characteristics and properties. In order to improve the reliability of automatic blocking systems, the methods for protecting railway automation equipment and telemechanics from the effects of high-power impulse noises and high levels of traction currents were further developed. Practical value. Based on the obtained results, the device under investigation can be introduced into production and used in railway automation systems to organize a stabilized secondary power source for railway automation track equipment, as well as to protect equipment from the effects of powerful impulse noises created by lightning discharges and lightning or switching overvoltages. The results of work can also be used in re-equipment of the hauls with new railway automation systems and in the preparation of design documentation for track circuits, station systems and automatic blocking systems. The results are used during the studying of the subjects: «Special Measurements at Railway Transport» and «Automatic Devices Power Supply»; the organization of scientific workshops, training courses etc.
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