Patent ID: 9190200
Filing Date: 2015-11-17
Classification: B66C,H01F,H01H

Abstract:
1. A controller for moving magnetic material, the controller comprising: a first set of contactors capable of opening and closing a first circuit, the first circuit including a first bridge rectifier, a reactance element, and a resistance element all connected in series; a second set of contactors capable of opening and closing a second circuit, the second circuit including a second bridge rectifier; at least one pair of contactors capable of opening and closing a third circuit, the third circuit including the reactance element; at least a second pair of contactors capable of opening and closing a fourth circuit, the fourth circuit including the reactance element; and a transformer, wherein an output of the transformer is connected in series with the first circuit when the first set of contactors close, and the output of the transformer is connected in series with the second circuit when the second set of contactors close.