Importance

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Abstract

A solid-state motor starter which includes three electronic switching modules is disclosed. The solid-state motor starter includes: an energy absorbing circuit, which includes a transient diode array including at least one transient diode branch, each branch includes at least one transient diode connected in series in the same direction, and the branches are connected in parallel in the same direction, and the transient diode array has a cathode and an anode connection end; a first and a second three-phase bridge rectifier circuit, which are composed of rectifier diodes. The input or output of each electronic switching module is connected to the midpoint of one of the bridge arms of the first or second three-phase bridge rectifier circuit. The positive poles and the negative poles of the first and second three-phase bridge rectifier circuit are connected to the cathode and anode connection end of the transient diode array.

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First Claim