Systems, methods and devices directed to transformers are disclosed. One transformer system includes a set of transformer cells and a controller. The set of transformer cells is coupled in series to form a series coupling, where each transformer cell includes at least one first coil and at least one second coil. The second coil is configured to receive electrical energy from the first coil through magnetic interaction. The controller is configured to modify electrical aspects at ends of the series coupling by independently driving the transformer cells such that at least one of the transformer cells is driven differently from at least one other transformer cell in the set.