keb inverter

The KEB inverter can be perceived as a unique type of KEB inverter. Essentially, the primary function of a KEB inverter is to manage basic electrical appliances such as lights and fans during a power outage.

As the name implies, the fundamental role of a KEB inverter is to convert an input direct current (DC) into a significantly larger alternating current (AC), typically 220VAC or 440VAC.

Before delving into the construction of a KEB inverter, it’s crucial to understand its key components. An oscillator transforms the input DC from a lead-acid battery into an oscillating current or a square wave, which is then supplied to the secondary winding of a power transformer. In this particular circuit, IC 4049 is utilized in the oscillator section.

KEB INVERTER PID CONTROL APPLICATION.

The speed control of the KEB inverter uses the mechanical speed signal as a feedback mechanism, adjusting the speed to match the target value. It takes another mechanical speed signal as the target value input, and the actual speed as the feedback signal for synchronous control.

Pressure control is achieved by using the pressure signal as the input, adjusting the pressure according to the preset value.

Flow control is managed by using the flow signal as the input.

Temperature control is maintained by regulating the fan’s operations based on the temperature signal input.

NOTE: The PID control function is a control system that matches an input value (i.e., a detected value) to the set target value. By combining proportional (P), integral (I), and derivative (D) control, it enables control even for a mechanical system with dead time. This operation elucidates the PID control applications and operations, along with the constant settings and tuning procedure.

PID CONTROL ACTIONS OF KEB INVERTER.

To distinguish the various PID control actions (i.e., proportional, integral, and derivative), the following figure illustrates the changes in the control input (i.e., the output frequency) when the deviation between the target value and the feedback is held constant. P control: control input proportional to the deviation is output. The deviation cannot be zeroed by P control alone. I control: a control input which is an integral of the deviation is output, this is effective to match the feedback to the target value. Sudden changes, however, must be tracked.

D CONTROL: a control input which is a derivative of the deviation is output, quick response to sudden changes is possible.

PID CONTROL: Optimal control is achieved by combining the best features of P, I, and D control.

see how to make free energy with inverter

Leave a Comment