公开(公告)号：US10454276B2

公开(公告)日：2019-10-22

申请号：US15707162

申请日：2017-09-18

Applicant: ABB Technology Oy

Inventor： Matthias Schult ,  Christian Schlegel ,  Dominik Flum ,  John Eckerle

IPC: H02J9/00 ,  H02J3/38 ,  H02M5/458 ,  H02M7/12 ,  H02M1/12

Abstract: A method is provided for connecting a main converter, e.g. for use in a power plant for regenerative energy having a generator, to a power grid. The method includes providing energy from the pre-charge unit to at least one of at least two converter paths. The at least one converter path is pre-charged using the energy provided from the pre-charge unit. At least one further converter path of the at least two converter paths is pre-charged using the energy provided from the pre-charge unit via the at least one converter path through the grid side converter of the at least one converter path and the grid side converter of the at least one further converter path. The main converter is connected to the power grid by closing the grid breaker.

公开(公告)号：US10364802B2

公开(公告)日：2019-07-30

申请号：US16055320

申请日：2018-08-06

Applicant: ABB Technology Oy

Inventor： Matthias Schult ,  Stephan Ebner ,  Christian Schlegel ,  Dominik Flum

IPC: F03D7/02 ,  F03D7/04 ,  F03D80/60

Abstract: A method for heating a wind turbine facility includes: charging a DC link of an electrical converter connected with a wind turbine of the wind turbine facility; heating air inside the wind turbine facility with heat generated by a voltage limiting unit interconnected with the DC link, which includes a resistor adapted for dissipating electrical energy into heat for reducing a voltage in the DC link, when the voltage is above a threshold voltage; wherein the voltage limiting unit is controlled, such that the voltage limiting unit generates heat according to settings defined in a controller of the voltage limiting unit. The heating settings are changed based upon commands from a user interface. Furthermore, the DC link is charged by a grid side converter of the wind turbine facility with power from an electrical grid.

公开(公告)号：US20180340519A1

公开(公告)日：2018-11-29

申请号：US16055320

申请日：2018-08-06

Applicant: ABB Technology Oy

Inventor： Matthias Schult ,  Stephan Ebner ,  Christian Schlegel ,  Dominik Flum

IPC: F03D80/60 ,  F03D7/02

CPC classification number: F03D80/60 ,  F03D7/0284 ,  F03D7/04 ,  F05B2220/60 ,  F05B2260/20 ,  F05B2260/64 ,  F05B2270/10711 ,  F05B2270/325 ,  Y02E10/723 ,  Y02T50/675

Abstract: A method for heating a wind turbine facility includes: charging a DC link of an electrical converter connected with a wind turbine of the wind turbine facility; heating air inside the wind turbine facility with heat generated by a voltage limiting unit interconnected with the DC link, which includes a resistor adapted for dissipating electrical energy into heat for reducing a voltage in the DC link, when the voltage is above a threshold voltage; wherein the voltage limiting unit is controlled, such that the voltage limiting unit generates heat according to settings defined in a controller of the voltage limiting unit. The heating settings are changed based upon commands from a user interface. Furthermore, the DC link is charged by a grid side converter of the wind turbine facility with power from an electrical grid.

公开(公告)号：US20180069404A1

公开(公告)日：2018-03-08

申请号：US15707162

申请日：2017-09-18

Applicant: ABB Technology Oy

Inventor： Matthias Schult ,  Christian Schlegel ,  Dominik Flum ,  John Eckerle

IPC: H02J3/38 ,  H02M5/458 ,  H02M7/12 ,  H02M1/12

CPC classification number: H02J3/386 ,  H02M1/126 ,  H02M5/4585 ,  H02M7/125 ,  Y02E10/763

Abstract: A method is provided for connecting a main converter, e.g. for use in a power plant for regenerative energy having a generator, to a power grid. The method includes providing energy from the pre-charge unit to at least one of at least two converter paths. The at least one converter path is pre-charged using the energy provided from the pre-charge unit. At least one further converter path of the at least two converter paths is pre-charged using the energy provided from the pre-charge unit via the at least one converter path through the grid side converter of the at least one converter path and the grid side converter of the at least one further converter path. The main converter is connected to the power grid by closing the grid breaker.