US 12,278,589 B2
Control method and control apparatus of permanent magnet generator
Jinpeng Wang, Beijing (CN)
Assigned to BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD., Beijing (CN)
Appl. No. 18/256,569
Filed by BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD., Beijing (CN)
PCT Filed Jun. 8, 2021, PCT No. PCT/CN2021/098784
§ 371(c)(1), (2) Date Jun. 8, 2023,
PCT Pub. No. WO2022/121261, PCT Pub. Date Jun. 16, 2022.
Claims priority of application No. 202011445072.9 (CN), filed on Dec. 8, 2020.
Prior Publication US 2024/0022190 A1, Jan. 18, 2024
Int. Cl. H02P 9/02 (2006.01); H02P 101/15 (2016.01)
CPC H02P 9/02 (2013.01) [H02P 2101/15 (2015.01)] 13 Claims
OG exemplary drawing
 
1. A control method of a permanent magnet generator, wherein the control method comprises:
determining an active current reference initial value and a reactive current reference initial value of the permanent magnet generator in the current control period;
searching, based on the active current reference initial value and the reactive current reference initial value, and with a target of maximizing a torque-current ratio in the current control period, an optimal active current reference value and an optimal reactive current reference value in the current control period; and
controlling, based on the optimal active current reference value and the optimal reactive current reference value, the permanent magnet generator to operate;
wherein the torque-current ratio is calculated based on a torque command value received by the permanent magnet generator from a wind turbine main controller and an output current value of the permanent magnet generator.