The invention discloses an eddy-current loss power calculation method for a mining permanent
magnet coupler, belongs to the technical field of permanent
magnet transmission, and relates to an eddy-current loss power calculation method for a mining permanent
magnet coupler. The method comprises the following steps: establishing a mining permanent magnet coupler
magnetic circuit model by adopting anequivalent
magnetic circuit principle, respectively calculating the magnetic resistance of each part of a
magnetic circuit according to the magnetic circuit model, further solving the numerical valueof the
magnetic flux of each part and the magnetic induction intensity of the surface of a conductor disc, and then calculating the output torque and the output power of the mining permanent magnet coupler. According to the principle of
conservation of energy, most of the difference between the input power and the output power of the mining permanent magnet coupler is composed of eddy-current loss power, the obtained
power difference serves as the power of eddy-current loss, and finally the calculated value of the eddy-current loss power of the mining permanent magnet coupler is obtained. According to the invention,, the method is high in
engineering application value, simple in calculation, high in precision and high in practicability, and has important significance in the aspects of service life prolonging, temperature rise control, overload protection and the like of the mining permanent magnet coupler.