Controlling power exchange from self-commutated converters

A wind turbine, comprising:

• a control system comprising:
• a reactive power control leg,
• an active power control leg, and
• a controller with an integral action, wherein the active power control leg is coupled to an input of the controller, wherein an output of the controller is coupled to the reactive power control leg,
• wherein the control system is configured to:
• operate the wind turbine in a first mode to provide power to a local AC grid;
• and
• switch operation of the wind turbine from the first mode to a second mode by activating the controller to increase power output by the wind turbine thereby activating an uncontrolled diode rectifier, wherein the controller is active during the second mode but inactive during the first mode, and wherein, when in the second mode, the wind turbine transmits power through the local AC grid, and to a high-voltage direct current (HVDC) link coupled to the uncontrolled diode rectifier.

A control system for a wind turbine, comprising:

• a processor;
• and
• a memory configured to store a program, which when executed by the processor performs an operation, the operation comprising:
• operating the wind turbine in a first mode to provide power to a local AC grid using the control system, wherein the control system comprises a reactive power control leg and an active power control leg;
• and
• switching operation of the wind turbine from the first mode to a second mode by activating a controller with an integral action to increase power output by the wind turbine thereby activating an uncontrolled diode rectifier, wherein the active power control leg is coupled to an input of the controller, wherein an output of the controller is coupled to the reactive power control leg, wherein the controller is active during the second mode but inactive during the first mode, and wherein, when in the second mode, the wind turbine transmits power through the local AC grid, and to a high-voltage direct current (HVDC) link coupled to the uncontrolled diode rectifier.