At present, enterprises are facing multiple challenges: global climate change is intensifying, energy demand is growing steadily, and resource and environmental constraints are tightening. In this context, energy conservation and efficiency have become one of the most direct and effective measures to promote green development. ABB’s synchronous reluctance motor and frequency converter package can help customers in various industries to save energy and improve efficiency, and realize green and low-carbon transformation.

In a typical application, using a frequency converter to control an industrial motor can reduce energy consumption by 25 percent. When the frequency converter is paired with IE5 high energy efficiency grade synchronous reluctance motor, the energy efficiency optimization is more significant. It is estimated that devices using electric motors consume about 45 percent of the world’s electricity and account for about 70 percent of industry consumption, so the opportunity for positive change is enormous.

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Frequency converter optimizes motor operation

The frequency converter controls and optimizes the operation of the motor by adjusting the speed and torque of the motor to meet the changing requirements of the system. Without it, the motor will run at full speed or be regulated by energy-consuming mechanical speed controls such as valves, gears, throttles and brakes. Importantly, there is a nonlinear relationship between motor speed and energy consumption, which means that even a slight reduction in speed can result in significant energy savings. In some cases, for example, slowing down the motor in a pump or fan by 20% is enough to halve its energy consumption.

New progress of high efficiency motor

In July 2021, IE3, a minimum international energy efficiency standard covering most low-voltage motors, was introduced in accordance with EU eco-design regulations. However, ABB has introduced a combination of synchronous reluctance motors and drives that meet the more demanding IE5 rating.

Using IE3 induction motors in combination with frequency converters typically reduces energy bills by up to 25%. Upgrading this combination to an IE5 high energy efficiency grade synchronous reluctance motor and frequency converter combination can result in further savings of 3%-4%, depending on the application and condition.

Given that most of the motors currently installed in industry are more than 10 years old, upgrading them to an optimized combination of high efficiency motors and converters will have a significant effect in terms of energy conservation and efficiency. It is reasonable to estimate that global electricity consumption could be reduced by 10%, thus reducing CO2 emissions.

An upgrade that pays for itself quickly

For companies that use motor driven equipment, the investment of upgrading to a synchronous reluctance motor and frequency converter combination makes sense solely from the point of view of energy conservation. Crucially, the purchase price of a motor is only a fraction of its lifetime cost, since most of that comes from the energy needed to run it. The initial cost of buying a synchronous reluctance motor and converter combination is slightly higher than the IE3 motor and converter combination, but the energy savings usually make up the difference in as little as a year. Thereafter, it would continue to generate annual savings for the next decade or more.

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In the future, ABB will continue to take concrete actions, relying on its profound accumulation in energy conservation and efficiency, professional experience in many industries and innovation ability in digital technology, to promote and support the green and low-carbon transformation of users in various industries.