Energy Savings and Drive Technologies in Industrial Facilities

Rising energy costs and sustainability requirements in industrial production facilities have made energy efficiency one of the most important strategic priorities for businesses. As KNC Otomasyon, by starting AC motors with variable speed drives (VSD) and speed controllers, we optimize motor speeds in line with instantaneous system requirements and ensure high-level energy savings in your facilities.

Why Energy Savings? Industrial Sustainability

Energy efficiency and conservation play a vital role in the global competitive environment. The main factors driving businesses toward energy savings are:

• Optimization of Production Costs: Maintaining profitability in the face of increasing unit costs.

• Energy Consumption Balance: Controlling the ever-increasing electricity consumption against limited resources and production volume.

• Environmental Awareness and Carbon Footprint: Complying with sustainable production principles.

• International Agreements: Global responsibilities brought by the Kyoto Protocol and similar environmental/energy regulations.

Savings Potential with Electric Motors and Variable Speed Drives

When analyzing total global electrical energy consumption, it is seen that approximately 65% of all energy consumed is used by electric motors. An even more striking fact is that the cost of electrical energy consumed by these motors over their operational lifespan is many times higher than the initial investment cost paid to purchase them.

With the right automation strategies, it is possible to achieve net energy savings ranging from 20% to 70% in motors utilizing speed controllers. This efficiency impact is observed at the highest level, particularly in the following industrial applications:

• Fan systems and ventilation exhausters

• Industrial water and process pumps

• Rotary screw air compressors

• Refrigeration compressors and condenser fans

Energy Consumption Dynamics in Constant and Variable Torque Loads

In AC motors controlled by variable speed drives, energy consumption is directly related to the rotational speed, and a decrease in speed results in a reduction in the power drawn:

• Constant Torque Loads (Conveyors, Elevators, Cranes, etc.): In such systems, energy consumption is directly proportional to speed; the power drawn decreases at the exact same rate the speed is reduced.

• Variable Torque Loads (Pumps, Fans, Air and Refrigeration Compressors): In these systems, a dramatic reduction occurs: the torque requirement decreases by the square of the speed reduction ratio, and the power consumption decreases by the cube of the speed reduction ratio. Thanks to this physical principle (Affinity Laws), massive energy savings are achieved when variable torque loads are driven by motor speed controllers.

Additional Engineering Advantages Provided by Variable Speed Drives

In addition to energy savings, the operational and mechanical advantages provided to facilities by using variable speed drives (VSD) are:

1. Mechanical Protection: Preventing shocks and stresses on mechanical components resulting from sudden accelerations and decelerations.

2. Water Hammer Prevention: Eliminating the destructive water hammer effect that occurs after a motor freewheels to a stop in pump and hydraulic lines.

3. Precise Process Control: The ability to be remotely controlled from automation software and the possibility of precise adjustments in line with system requirements.

4. Starting Current Optimization: Reducing high starting (inrush) currents and preventing the grid and other sensitive systems from being negatively affected.

5. Reduced Compensation Need: Minimizing the load on the power factor correction (compensation) system by balancing the reactive power drawn from the grid.

Contact us today to achieve uninterrupted performance, maximum safety, and high efficiency in your production lines, and to experience our engineering approach firsthand.

Our expert team is always ready to offer the most suitable projects and solutions for your facility's needs. You can reach out to us through our contact page to get detailed information and take the first step toward adding value to your business.