US 10,890,160 B2
Control system of a wind turbine generator
Ningbo Wang, Lanzhou (CN); Liang Lu, Lanzhou (CN); Kun Ding, Lanzhou (CN); Shiyuan Zhou, Lanzhou (CN); Chen Zhang, Minhang District (CN); Jin Li, Lanzhou (CN); Zheng Li, Minhang District (CN); Nianzong Bai, Lanzhou (CN); Jing Zhi, Lanzhou (CN); Xu Cai, Minhang District (CN); Zifen Han, Louzhou (CN); and Youming Cai, Minhang District (CN)
Assigned to Wind Power Technology Center of Gansu Electric Power Company, Lanzhou (CN); State Grid Corporation of China, Beijing (CN); Gansu Electric Power Company of State Grid, Lanzhou (CN); and Shanghai Jiao Tong University, Shanghai (CN)
Appl. No. 16/81,900
Filed by WIND POWER TECHNOLOGY CENTER OF GANSU ELECTRIC POWER COMPANY, Qilihe District Lanzhou (CN); STATE GRID CORPORATION OF CHINA, Xicheng District (CN); GANSU ELECTRIC POWER COMPANY OF STATE GRID, Chengguan District Lanzhou (CN); and SHANGHAI JIAO TONG UNIVERSITY, Minhang District (CN)
PCT Filed Feb. 8, 2017, PCT No. PCT/CN2017/073109
§ 371(c)(1), (2) Date Sep. 1, 2018,
PCT Pub. No. WO2017/148251, PCT Pub. Date Sep. 8, 2017.
Claims priority of application No. 2016 1 0116411 (CN), filed on Mar. 1, 2016.
Prior Publication US 2019/0072070 A1, Mar. 7, 2019
Int. Cl. F03D 7/00 (2006.01); F03D 7/02 (2006.01); H02J 3/24 (2006.01); H02P 9/10 (2006.01); F03D 9/11 (2016.01); F03D 9/25 (2016.01); F03D 17/00 (2016.01); F03D 7/04 (2006.01); H02P 9/46 (2006.01); H02P 101/15 (2016.01)
CPC F03D 7/028 (2013.01) [F03D 7/0284 (2013.01); F03D 7/047 (2013.01); F03D 9/11 (2016.05); F03D 9/25 (2016.05); F03D 17/00 (2016.05); H02J 3/24 (2013.01); H02P 9/10 (2013.01); H02P 9/46 (2013.01); H02P 2101/15 (2015.01); H02P 2201/07 (2013.01); H02P 2201/09 (2013.01); H02P 2201/11 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A control system of a wind turbine generator system, comprising: a wind turbine, a gearbox, an electric generator and a converter,
wherein the control system further comprises a supercapacitor energy storage apparatus, wherein the supercapacitor energy storage apparatus comprises a DC-DC converter and a supercapacitor, wherein the converter comprises DC buses, and the supercapacitor is electrically connected to the DC buses via the DC-DC converter,
wherein the control system further comprises: a voltage monitoring module, a controller, and a voltage control module:
the voltage monitoring module is configured to detect a voltage of the supercapacitor;
the controller is configured to determine whether the voltage of the supercapacitor is within an allowable operating range or not, and
the voltage control module is configured to adjust, when the voltage of the supercapacitor is out of the allowable operating range, the voltage of the supercapacitor to be within the allowable operating range,
wherein the controller is further configured to, when determining that the voltage of the supercapacitor is lower than a lower limit of the voltage range, further determine whether a current wind speed meets a heavy-wind criteria or not; and when the current wind speed is determined to meet the heavy-wind criteria the voltage control module is configured to charge the supercapacitor;
when the controller determines that the voltage of the supercapacitor is higher than an upper limit of the voltage range, the controller is configured to further determine whether the current wind speed meets a light-wind criteria or not, and the voltage control module is configured to discharge the supercapacitor when the current wind speed meets the light-wind criteria.