Decoupled control of a power converter

A method for controlling operating of a power converter, the method comprising:

• obtaining, by a controller, a plurality of feedback signals indicative of a plurality of controlled parameters of the power converter, wherein the power converter includes a plurality of switching cells arranged in a plurality of submodules;
• detecting, by the controller based on the plurality of feedback signals, changes in respective ones of the plurality of controlled parameters during operation of the power converter;
• generating, by the controller based on the changes in respective ones of the plurality of controlled parameters, a plurality of control signals for adjusting duty cycles of the plurality of switching cells to control the power converter for a plurality of control objectives, wherein the duty cycles are adjusted such that one or more relationships between the respective duty cycles are maintained to provide that controlling the power converter for one of the plurality of control objectives does not affect control of the power converter for another one of the plurality of control objectives;
• and
• providing, by the controller, the plurality of the control signals to the plurality of switching cells to control the duty cycles of the plurality of switching cells,
• wherein i) the first submodule of the plurality of submodules includes a first switching cell placed in parallel with a second switching cell and ii) the second submodule of the plurality of submodules includes a third switching cell placed in parallel with a fourth switching cell.

A controller for a power converter, the controller comprising:

• a feedback signal engine configured to obtain a plurality of feedback signals indicative of a plurality of controlled parameters of the power converter, wherein the power converter includes a plurality of switching cells arranged in a plurality of submodules;
• and
• a plurality of control loops configured to generate, based on detected changes in respective ones of the plurality of controlled parameters, a plurality of control signals for adjusting respective duty cycles of the plurality of switching cells to control the power converter for a plurality of control objectives, wherein the controller is configured to adjust the duty cycles such that one or more relationships between the respective duty cycles are maintained to provide that controlling the power converter for one of the plurality of control objectives does not affect control of the power converter for another one of the plurality of control objectives,
• wherein i) the first submodule of the plurality of submodules includes a first switching cell placed in parallel with a second switching cell and ii) the second submodule of the plurality of submodules includes a third switching cell placed in parallel with a fourth switching cell.