Specification of conditions to minimise electric drive loads at active limitation of dynamic forces of springy machinery

Abstract

Active ways of oscillations damping and dynamic loads limiting of machinery springy gears were studied that are implemented by additional control impacts made by the electric drive. The study is aimed to detect the conditions required to minimise the electric drive energy costs while applying active ways of dynamic loads limiting of the machinery springy gears. We got analytic equations to calculate irreducible values of engine toque (current) and EMF of the converter supplied it that is required for determined decrease of machinery dynamic efforts. We specified the conditions of engine torque minimisation and EMF of the converter supplied it while applying active ways of dynamic loads limiting of the machinery springy gears. We detected that in order to assure effective application of the active ways the channel of machinery dynamic forces limiting shall provide changing of the torque component from the additional control impact in the opposite phase with force in the mechanical gear springy element and it helps to minimize the electric drive energy costs. We introduce the implementation examples of the active ways of machinery dynamic limiting operating in real industrial environments.