In many fields of science and engineering. partial differential equation (PDE) constrained optimal control problems are widely used. We mainly solve the optimization problem constrained by the time-periodic eddy current equation in this paper. We propose the three-block splitting (TBS) iterative method and proved that it is unconditionally convergent. https://www.bekindtopets.com/limited-deal-Commode-pin-massif-3-tiroirs-Elie-CAMIF-best-find/