The energy saving of Mitsubishi inverters is mainly manifested in the application of fans and water pumps. In order to ensure the reliability of production, all kinds of production machinery have a certain margin when they are designed and equipped with power drives.
When the ac servo motor cannot run under full load, in addition to meeting the power drive requirements, the excess torque increases the consumption of active power and causes a waste of electrical energy.
The traditional speed adjustment method of fans, pumps and other equipment is to adjust the air supply and water supply by adjusting the inlet or outlet baffle and valve opening. The input power is large, and a large amount of energy is consumed in the interception process of the baffle and valve. When using Mitsubishi frequency converter for frequency conversion speed regulation, if the flow requirement is reduced, the requirement can be met by reducing the speed of the pump or fan.
Reactive power not only increases the line loss and heat generation of the equipment, but more importantly, the reduction of the power factor leads to a reduction in the active power of the grid. A large amount of reactive power is consumed in the line. The efficiency of the industrial automation devices is low and the waste is serious. After using Mitsubishi inverter frequency conversion speed control device, due to the function of the internal filter capacitor of the Mitsubishi frequency converter, the reactive power loss is reduced and the active power of the power grid is increased.
1. The hard start of the motor will cause a serious impact on the power grid, and it will also require too much power grid capacity. The large current and vibration generated during the start will cause great damage to the baffle and valve, and it will greatly affect the service life of the equipment and pipelines.
After using the frequency conversion energy-saving device, using the soft start function of the Mitsubishi frequency converter, the starting current will start from zero, and the maximum value will not exceed the rated current, which reduces the impact on the power grid and the requirements for power supply capacity, and extends the service life of equipment and valves, saving equipment maintenance costs.
2. In theory, Mitsubishi inverter can be used in all mechanical equipment with motors. When the motor starts, the current will be 5-6 times higher than the rated value, which will not only affect the service life of the motor, but also consume more. When the system is designed, there will be a certain margin in the selection of the motor, and the speed of the motor is fixed.
But in the actual use process, sometimes it needs to run at a lower or higher speed, so it is very necessary to carry out frequency conversion transformation. Mitsubishi inverter can realize soft start of motor and compensate power factor.