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	モーター駆動効率分析	高調波歪解析
分野	電気工学	電気工学
系統	Process / pipeline	Process / pipeline
提唱年	1970s	1822
提唱者	Electrical machinery manufacturers	Jean-Baptiste Joseph Fourier
種類	Computational pipeline	Computational pipeline
原典	IEEE Std 841-2023: IEEE Guide for the Selection and Use of AC Electric Motors with Adjustable Speed Drives.	IEEE Std 519-1992: IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems.
別名	motor efficiency assessment, drive system losses, motor performance evaluation	harmonic content analysis, THD analysis, Fourier harmonic decomposition
関連	4	4
概要	Motor drive efficiency analysis quantifies energy losses in electrical motors and variable frequency drive (VFD) systems, which together comprise the largest industrial electrical load. Methods assess copper losses in windings, core (iron) losses, mechanical losses, and converter losses to identify efficiency improvements and estimate annual energy and cost savings.	Harmonic distortion analysis quantifies the deviation of voltage or current waveforms from sinusoidal shape due to nonlinear loads. Using Fourier decomposition, engineers separate the waveform into its fundamental frequency and harmonic components (integer multiples of 50 or 60 Hz). Harmonic analysis is critical for assessing power quality and designing filters in modern power systems with high penetration of nonlinear devices.