Rotational imbalance reduction

A system comprising:

• a turbomachine rotor assembly including a rotary element;
• at least one heating element mounted proximate the rotary element, the at least one heating element comprising a plurality of heating elements arranged to form at least a portion of a ring around the rotary element, the plurality of heating elements including a first subset and a second subset of heating elements;
• a control system coupled with the heating element, the control system:
• determining whether a rotational imbalance of the turbomachine rotor assembly exceeds a predetermined level;
• and
• actuating the at least one heating element to heat the rotary element in response to determining that the rotational imbalance of the turbomachine rotor assembly exceeds the predetermined level;
• and
• a pulsing element coupled to the control system and configured to pulse actuate the plurality of heating elements in synchronization with a multiple, fraction, or mixed fraction of a frequency of rotation of the rotary element;
• wherein the control system activates the first subset of the plurality of heating elements in first pulses synchronized with the multiple, fraction, or mixed fraction of the frequency of rotation of the rotary element, and the control system activates the second subset of the plurality of heating elements in second pulses synchronized with the multiple, fraction, or mixed fraction of the frequency of rotation of the rotary element, the first pulses being temporally offset from the second pulses.