TY - JOUR T1 - A Three-Stage Optimal Frequency Regulation Scheme for Wind Turbines With Pontryagin's Minimum Principle JO - IEEE Transactions on Power Systems UR - https://doi.org/10.1109/tpwrs.2025.3623664 PY - 2025/10/20 AU - Zhang G AU - Wang J AU - Li H AU - Zhang F AU - Ding L AU - Zhang X AU - Liu H ED - DO - DOI: 10.1109/tpwrs.2025.3623664 PB - Institute of Electrical and Electronics Engineers (IEEE) VL - 41 IS - 2 SP - 1591 EP - 1604 Y2 - 2026/03/13 ER -