# Research on DC bias analysis for transformer based on vibration Hilbert Huang transform and ground-state energy ratio method

> Research article (International Journal of Electrical Power & Energy Systems, 2019) · cited 36× · AI/ML

**Wikidata**: [openalex:W2914470796](https://www.wikidata.org/wiki/openalex:W2914470796)  
**Source**: https://4ort.xyz/entity/research-on-dc-bias-analysis-for-transformer-based-on-vibration-hilbert-huang-transform-and-ground-state-energy-ratio-me