Patent ID: 9673694
Date: 2017-06-06
CPC Classifications: H01F,H02J,H02M

Claim:
1. An electromagnetic induction type power supply device comprising: a current transformer module comprising a plurality of current transformers, which induces, by electromagnetic induction, a secondary current from a primary current flowing in a line to output power; a power supply module comprising a plurality of power converting units, which converts the power output from the plurality of current transformers into direct current (DC) power and outputs the converted power; and a power summing unit summing the DC power output from the plurality of power converting units to provide the summed power to a load; wherein at least one of the power converting units comprises: a primary rectifier unit converting induced power provided from the current transformer into a DC voltage; a switching circuit unit switching and outputting the DC voltage converted by the primary rectifier unit by pulse width modulation; and a secondary rectifier unit converting, into a DC voltage, a voltage inducted by the voltage output from the switching circuit unit; wherein at least one of the current transformers is a separable current transformer that is added to or removed from the line, and the at least one of the power converting units further comprises a damping circuit unit for adjusting magnetization of the current transformer to be separated from the line of the current transformer module.