Delta inverter is a device that converts the power supply (50Hz or 60Hz) into a communication power supply of various frequencies to complete the variable speed operation of the motor, in which the control circuit completes the control of the main circuit, the rectifier circuit converts the communication power into direct current, the DC center circuit filters the output of the rectifier circuit, and the inverter circuit reverses the direct current into communication electricity.
In addition to speed regulation and soft start effect, the most important thing is to be able to save energy.
The composition of Delta's inverter
The inverter is generally divided into 4 parts: the rectifier unit, the high-capacity capacitor, the inverter and the controller.
Rectifier unit: converts the communication power with a fixed operating frequency into direct current.
High Capacitance: Stores converted electrical energy.
Inverter: An electronic switch composed of an array of high-power switching transistors, which converts direct current into square waves of different frequencies, widths, and fluctuations.
Controller: Operate according to the set program, control the fluctuation and pulse width of the output square wave, make the communication electricity superimposed as an approximate sine wave, and drive the communication motor.
The functional effect of the inverter
The energy saving of the inverter is mainly manifested in the application of fans and pumps. In order to ensure the reliability of production, all kinds of production machinery have a certain surplus when planning to use power drive. When the motor cannot run at full load, in addition to meeting the requirements of power drive, the excess torque increases the consumption of active power and forms the waste of electric energy. The traditional speed regulation method of fans, pumps and other equipment is to regulate the air volume and water supply by adjusting the baffle plate and valve opening of the inlet or outlet, and the input power is large, and a large amount of energy is consumed in the interception process of the baffle and valve. When using variable frequency speed regulation, if the flow requirement is reduced, the speed of the pump or fan can be lowered to meet the requirements.
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Problem Description:
What is stall avoidance?
Solution(s):
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