公开(公告)号：US10050573B2

公开(公告)日：2018-08-14

申请号：US15068659

申请日：2016-03-14

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chang-Yong Wang ,  Fei Lu ,  Hai-Fen Xue ,  Li Chen ,  Liang Cao

IPC: H02P9/00 ,  F03D7/02 ,  F03D9/25

Abstract: A wind power generation system and a control method thereof are provided herein. The wind power generation system includes a doubly-fed generator, a generator-side converter, a grid-side converter and an auxiliary converter. The doubly fed generator includes a stator winding and a rotor winding. The stator winding is coupled to a grid. The generator-side converter is coupled to the rotor winding. The grid-side converter is coupled between the generator-side converter and the grid. The auxiliary converter includes a first side and a second side. The first side is coupled to the stator winding. The second side is coupled between the generator-side converter and the grid-side converter. The generator-side converter, the grid-side converter and the auxiliary converter use the same DC bus.

公开(公告)号：US09768706B2

公开(公告)日：2017-09-19

申请号：US14794844

申请日：2015-07-09

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chang-Yong Wang ,  Li Cai ,  Yan-Song Lu

IPC: H02M5/45 ,  H02M5/452 ,  H02M5/458 ,  F03D9/25 ,  H02M1/00 ,  H02M7/757

CPC classification number: H02M5/4505 ,  F03D9/255 ,  H02M5/45 ,  H02M5/452 ,  H02M5/4585 ,  H02M7/7575 ,  H02M2001/0077 ,  Y02E10/72 ,  Y02E10/76

Abstract: A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.

公开(公告)号：US10168368B1

公开(公告)日：2019-01-01

申请号：US15983109

申请日：2018-05-18

Applicant: DELTA ELECTRONICS, INC.

Inventor： Ming-Xuan Dong ,  Yan Ma ,  Chang-Yong Wang ,  Ai-Bin Qiu

IPC: H02M7/757 ,  G01R27/26 ,  H02M7/5387 ,  H02M1/36

Abstract: A method for estimating capacitance applied to a three phase converting device is disclosed. The three phase converting device includes a three phase converter and a processor. The processor executes following steps: (a) outputting a non-baseband signal to the three phase converter, such that a bus voltage of the three phase converter generates a non-baseband flutter; (b) obtaining the bus voltage of the three phase converter; (c) obtaining a bus voltage estimating value based on the bus voltage, a bus capacitance estimating value, an input power, and an output power of the three phase converter; (d) respectively outputting a first AC component and a second AC component corresponding to the non-baseband flutter through filtering the bus voltage and the bus voltage estimating value by a filter segment; (e) estimating a bus capacitance based on the first AC component, the second AC component and a bus capacitance initial value.

公开(公告)号：US10027239B2

公开(公告)日：2018-07-17

申请号：US15674512

申请日：2017-08-10

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chang-Yong Wang ,  Li Cai ,  Yan-Song Lu

IPC: H02M5/45 ,  F03D9/25 ,  H02M5/458 ,  H02M5/452 ,  H02M7/757 ,  H02M1/00

Abstract: A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.