Relationship between motor flywheel torque and driven machine torque

Flywheel torque refers to the product of the weight of the rotating part of the generator and the square of its inertial diameter. The flywheel torque of the generator has a significant impact on the transient processes and dynamic stability of the power system. It directly affects the rate of increase in the speed of the generator and the pressure in the water transmission system when load is suddenly removed under various operating conditions. It must first meet the requirements of the calculations related to the regulation and stability of the water transmission system. When a fault occurs in the power system or there is a sudden change in the load on the turbines, the delay in the speed control mechanism causes the turbine speed to increase. To limit this increase, the turbine requires a certain amount of flywheel torque; the greater this torque, the smaller the rate of change in the turbine speed, and thus the better the stability of the power system. Flywheel torque is closely related to the cost of the turbine – the greater the torque, the heavier the turbine, and consequently the higher the manufacturing costs. Torque is a special type of force that causes an object to rotate. The torque of an engine refers to the moment of force output by the engine from the crankshaft end. Under fixed power conditions, it is inversely proportional to the engine speed: the higher the speed, the lower the torque, and vice versa. It reflects the vehicle’s load-carrying capacity within a certain range.