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9 Engineering a More Sustainable Future | ADI Higher Efficiency Industrial Motors Can Significantly Reduce Industrial CO2 Emissions The global electricity supply in 2022 was 28,642 terawatt- hours, contributing 13.6 Gt of carbon emissions ( 36% of global CO 2 emissions in 2022 ) . 2 Industry consumes 30% of global electricity and within industry, electric motors make up 69% of power consumption. 3 With ~450 Mu of motors installed in the industry and ~52 Mu new motors installed in 2022 ( split between brownfield upgrades and greenfield developments ) , new higher efficiency motion assets are significantly reducing electricity consumption and CO 2 emissions. Motors are used across industrial applications to drive pumps, fans, compressed air systems, material handling, processing systems, and more. It is estimated that if all deployed motor driven systems were operated at maximum efficiency, it would reduce global electricity demand by 10% and remove 2490 Mt of CO 2 emission in 2030 3 ( see Figure 2 ) . Increased Energy Efficiency Through Increased Deployment of Motor Drives The most basic and lowest efficiency motion solutions are based on a grid-connected or AC-powered, 3-phase motor that uses a switchgear to provide on/off control and protection circuitry. These basic motion solutions run at a relatively fixed speed, independent of any load variation. Adjustments in output variables (such as fluid flow in pumps and fans) are implemented with mechanical controls such as throttles, dampers, and valves, whereas significant speed changes are implemented with gears. It is estimated that 70% to 80% of all deployed motors today are grid connected and would benefit from being connected to an inverter or variable speed drive (VSD) to reduce energy consumption. The addition of a rectifier, DC bus, and a 3-phase inverter stage creates an inverter with variable frequency and variable voltage output that is applied to the motor to enable variable speed control. This inverter driven motor significantly reduces energy consumption by running the motor at the optimum speed for the load and application. Examples include higher efficiency pumps and fans. When added to the existing motor of a pump, fan, or compressor, an inverter can typically reduce power consumption by ~25%. 4 For higher performance motion control applications, a VSD enables accurate torque, velocity, and position control. To achieve this, current and position measurement are added into the basic open-loop inverter drive. Conveyors, winding, printing, and extrusion machinery are typical examples of these applications. It is estimated that between 20% and 30% of all deployed motors in industry are inverter driven or connected to a VSD. By moving more deployed motion assets from grid-connected motors to inverter driven or VSDs, we can significantly reduce the energy consumption and CO 2 emissions of the ~450 Mu of motors deployed in industry. Figure 2: Industrial motors key statistics. 2 Adobe Stock / Hramovnick – stock.adobe.com