The Power Circuit of Mechanical Damping Device for Cooling System of 50 kW Pulse Diesel Generator

Abstract

Diesel generators have advantages such as high reliability, superior economic performance, and a wide range of applications. However, its working environment is relatively sealed, and it is difficult for the internal heat of the motor to transfer to the outside. Prolonged high temperatures can affect the operational performance of the motor and even cause danger. Therefore, it is necessary to design a reasonable cooling system to ensure its efficient operation within the safe working temperature. The water-cooled cooling system has good heat dissipation performance, consisting of components such as a water pump, radiator, fan, water tank, and temperature controller. By precisely controlling the water flow rate and wind speed, effective control of the internal temperature of the generator is achieved, extending the service life of the equipment. This article studies the power circuit of the mechanical damping device in the cooling system of a 50kW pulse diesel generator, develops heat transfer and hydraulic energy circuits, and constructs the frequency response of the circuit. As the water quality increases in the circuit, the amplitude decreases at low frequencies (less than 4 rad/s) and frequencies close to 10 rad/s, and the amplitude aligns. For one parameter variable, the optimal frequency is 3-4 rad/s.