Featuring an arc-shaped magnet design for BLDC motors used in residential air conditioning indoor units, new CurvedSpoke technology from LG Electronics decreases motor size significantly while increasing energy density through optimized curved magnet placement.
LG showcased the CurvedSpoke design along with other next-generation component technologies at AHR Expo 2026 held in Las Vegas in February. Powered by LG’s proprietary innovations, the company’s latest compressors and motors incorporate a pioneering design approach that fundamentally redefines structure, movement and position to elevate essential performance and efficiency.
With nearly 70 years of expertise in compressor and motor technologies, LG has established itself as a leading global supplier of core components for home appliances including HVAC systems, refrigerators, washing machines and vacuum cleaners. At this year’s exhibition, LG introduced two proprietary technologies featured in its latest components: the LG BHA Series – DualJet for reciprocating compressors and LG CurvedSpoke for BLDC motors.
The LG BHA Series – DualJet represents a significant advancement in reciprocating compressors for refrigeration applications. Its dual-flow refrigerant structure balances internal pressure during compression, optimizing refrigerant flow and improving efficiency while reducing energy consumption under real-world operating conditions. To support long-term reliability, the compressor incorporates built-in protection and diagnostic functions that continuously monitor operating conditions, enabling proactive fault detection and system adjustment.
The arc-shaped magnet design of the CurvedSpoke technology decreases motor size by approximately 12 percent while increasing energy density through optimized curved magnet placement. The result is high efficiency that supports system-level miniaturization and overall weight reduction. Based on performance parameters of 1.21 kgf-cm torque at 1,320 RPM, the curvedmagnet design increases magnet volume by approximately 6.5%, and the partialbridge rotor structure reduces magnetic flux leakage. As a result, motor efficiency improves by approximately 3.4% at the same size, or the motor size can be reduced by approximately 12% while maintaining the same efficiency.
“Our guiding principle is simple: to continuously redefine component design and movement to deliver essential performance and lasting value beyond efficiency,” said Kim Cheol, head of the Component Solution Business at the LG Home Appliance Solution Company.
Since beginning motor production in 1962, LG Component Solution has manufactured more than one billion compressors and motors worldwide. The Component Solution business operates as part of the LG Electronics Home Appliance Solution Company. For more info, see www.lg.com.
