Applications of PID Controllers

PID, which stands for Proportional Integral Derivative, is a type of device used in industrial settings to regulate several process variables, including pressure, flow, temperature, and speed. This controller regulates all of the process variables using a control loop feedback mechanism.

This kind of control is utilized to steer a system toward an objective position when it would otherwise be level. It is often utilized for temperature control, automation and a wide variety of chemical processes. Closed-loop feedback is employed in this controller to keep the actual output from a technique, such as near to the objective, or, if possible, at the fixed point.

Applications of PID Controllers

The PID controller applications include the following:

The best application for a PID controller is temperature control, where the controller employs a temperature sensor as an input and can be connected to a fan or heater as an output. This controller is typically just one component of a temperature control system. When selecting the ideal controller, the complete system must be reviewed and taken into account.

• Temperature Control of Furnace

Furnaces are typically used for heating as well as holding large quantities of raw materials at extremely high temperatures. It is typical for a large amount of materials to be occupied. As a result, even when a lot of heat is provided, the material’s temperature doesn’t change quickly and requires a lot of inertia. This feature produces a Process Variable signal that is reasonably steady and enables the derivative period to effectively adjust for faults without significantly changing the Final Control Element orController Output.

• MPPT Charge Controller

A photovoltaic cell’s V-I characteristic is mostly influenced by the temperature and irradiance range. The operating voltage and current will fluctuate frequently depending on the weather. Therefore, it is crucial to monitor the highest power point of a productive photovoltaic system. By providing set voltage and current points to the PID controller, Maximum Power Point Tracking is discovered. The tracker maintains constant voltage and current even when the weather varies.

• The Converter of Power Electronics

We know that converter is an application of power electronics, so a PID controller is mostly used in converters. The output of a converter is altered whenever it is connected to a system based on a change in the load. For instance, when a load is increased when an inverter is connected to it, a large current is supplied. As a result, neither the voltage nor the current parameters are constant; instead, they change depending on the situation.

In this situation, the controller will provide Pulse Width Modulation signals to turn on the inverter’s Insulated Gate Bipolar Transistors. The PID controller is given the response signal based on the change in the load for it to output an error. The failure signal serves as the basis for these signals’ generation. Through a comparable inverter, we can get variable input and output in this state.

In this post, we spoke about the uses of PID controllers. We manufacture accurate, high-quality PID controllers that are reasonably priced at HTA Instrumentation (P) Ltd.