Received 'Invention Award' at the FY2026 National Invention Awards

Mitsubishi Electric Corporation has received the 'Invention Award' at the FY2026 National Invention Awards, hosted by the Japan Institute of Invention and Innovation, for its technology concerning the 'Motor Equipment Diagnostic Technology for Low-Cost Plant Maintenance.' The award ceremony will be held on Monday, June 15th, at The Okura Tokyo.

■ Overview of the Award
'Motor Equipment Diagnostic Technology for Low-Cost Plant Maintenance'

In manufacturing sites, motor equipment that powers fans, pumps, and compressors is essential for maintaining productivity. However, the decline in specialized technicians and losses from sudden equipment failure are significant challenges. Previously, vibration sensors were used, but implementation costs were a barrier. While methods using current sensors existed, shifts in current power spectrum peak positions due to operating conditions led to false diagnoses.

We have established a calculation method to theoretically determine the fluctuation range of peak positions caused by operating conditions, achieving high-precision fault diagnosis. By applying this technology to motor control centers, it can automatically detect mechanical failures, rotor bar defects, belt breakage, layer shorts, and torque anomalies from current and voltage data. As no wiring work is required and it can be implemented simply by adding software, it contributes to cost reduction. This technology is adopted in the 'Mitsubishi Motor Diagnostic Multi-Motor Controller' released in 2020.