Ablation system, methods, and controllers

A multi-electrode ablation system comprising:

• a power supply configured to be coupled to a plurality of electrodes;
• and
• a controller coupled to the power supply, the controller configured to:
• set a power limit for each electrode of the plurality of electrodes, wherein the power limit establishes a maximum power that may be dissipated through said electrode;
• determine a thermal gain of each electrode of the plurality of electrodes;
• and
• for each electrode of the plurality of electrodes, determine whether or not to reduce the power limit for said electrode based at least in part on the determined thermal gain of said electrode.

A method of operating a multi-electrode ablation system, the method comprising:

• setting a power limit for each electrode of a plurality of electrodes, wherein the power limit establishes a maximum power that may be dissipated through said electrode;
• determining a thermal gain of each electrode of the plurality of electrodes;
• and
• for each electrode of the plurality of electrodes, determining whether or not to reduce the power limit for said electrode based at least in part on the determined thermal gain of said electrode.