FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical equipment, namely to the DC traction electrical machine cooling system. Cooling system consists of DC electric machine, DC electric machine thermal model, cooling fan drive consisting of motor-fan based on asynchronous motor and asynchronous motor frequency converter, controller, comparison units and OR logic unit. System is configured to maintain in a given temperature range of armature winding, temperature of excitation winding and collector temperature and with possibility of changing air flow for cooling depending on maximum error of temperature control of said units.
EFFECT: improving reliability, efficiency and reducing cooling costs by providing the permissible temperature range of the main units of the electrical machine and ensuring the temperature maintenance of the units specified in GOST 2582-2013 in the permissible range.
1 cl, 1 dwg
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