Unlocking 0.1% Efficiency: Accurate High-Frequency Analysis for EV Inverters

Energy efficiency is crucial for the advancement of electric vehicles (EVs), particularly in inverter and motor design. Even marginal efficiency gains can dramatically influence vehicle range and performance. As developers aim for a precise 0.1% improvement, reliable measurement of high-frequency power becomes essential.

Traditional power analyzers often fall short in accuracy due to significant discrepancies between simulations and actual test data, long measurement averaging times that increase motor cooling intervals, and poor reproducibility of results. These issues stem primarily from the complex waveforms generated at high frequencies, challenging the accuracy and repeatability of conventional measurement instruments.

Hioki specifically addresses these limitations through its state-of-the-art PW8001 Power Analyzer and dedicated high-accuracy current sensors. With an exceptional bandwidth and high-speed sampling capability, the PW8001 ensures precise, stable, and reproducible high-frequency measurements. Hioki’s unique approach to phase correction, enabled by in-house sensor development, significantly reduces measurement errors related to aliasing and conductor positioning.

This integrated measurement solution empowers engineers to accurately pinpoint energy losses, bridging the gap between simulation predictions and real-world performance. By minimizing variability and enhancing measurement reproducibility, Hioki’s advanced solutions enable engineers to confidently achieve the critical incremental efficiency improvements necessary for leading-edge EV powertrain development.

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