Cyclic dynamo action in numerial simulation of solar convection

I will review recent advances in the production of solar-like cyclic variations of a dynamo-generated large-scale magnetic field arising in global MHD simulations of solar convection. After describing a few representative simulations, I will focus on the turbulent nature of the driving electromotive force. Cyclic variations of the large-scale magnetic component appears to hinge on a fine balance between induction by the large-scale flows, and a turbulent electromotive force, the latter surprisingly akin to simple expectations from mean-field electrodynamics. I will also discuss the nature and mode of operatin of the mechanisms limiting the growth of the large-scale magnetic field in these simulations.