Patent ID: 9000692
Filing Date: 2015-04-07
Classification: F04B,H02K,H02P

Abstract:
1. A linear electrodynamic-type motor, for compressing a fluid circulating in a cryocooler notably using a Stirling cycle, the motor comprising: at least one power-supply circuit adapted to deliver an AC power-supply current at an AC power-supply voltage, at least one movable mass, such as a piston, adopting a translational movement between a first position and a second position in which a respective one of the at least one movable mass can compress the fluid; and at least one induction coil connected to the power-supply circuit and arranged so as to transmit the translational movement to a respective one of the at least one removable mass; at least one secondary circuit arranged to be connected to the terminals of at least one induction coil; and at least one switching device arranged so as to selectively connect the secondary circuit to at least one induction coil, wherein: