  This paper proposes an efficient parallelised computation of field/circuit
coupled systems co-simulated with the Waveform Relaxation (WR) technique. The
main idea of the introduced approach lies in application of the
parallel-in-time method parareal to the WR framework. Acceleration obtained by
the time-parallelisation is further increased in the context of micro-macro
parareal. Here, the field system is replaced by a lumped model in the circuit
environment for the sequential computations of parareal. The introduced
algorithm is tested with a model of a single-phase isolation transformer
coupled to a rectifier circuit.
