Amosense Co., Ltd

Jung-Hyun Choi

Won-San Na

Jin-Pyo Park

Disclosed is an electromagnetic-inductive power supply apparatus, which switches so that a plurality of coils winding around a current transformer core is connected in series to a rectification unit based on the voltage induced in the current transformer, thereby producing the power within the set range even in a state where the voltage outside the reference is induced. The disclosed electromagnetic-inductive power supply apparatus senses the voltage induced in the current transformer and switches the plurality of unit coils is connected to the rectification unit based on the voltage sensed.

Electromagnetic-inductive power supply apparatus

Disclosed is a magnetic induction power supply device, which switches the unit coil having the smallest number of windings to a rectification unit at the initial operation, thereby preventing the parts damaged due to an excessive inrush voltage. The disclosed magnetic induction power supply device switches the unit coil having the smallest number of windings to the rectification unit when emergency power is applied from a first power supply unit or a second power supply unit. The second power supply unit can supply the power source induced in the unit coils to a sensing unit as the emergency power.

Magnetic induction power supply device

Disclosed are an apparatus and a method for diagnosing a failure of an electromagnetic-inductive power supply apparatus, which diagnoses whether a power-generation CT has failed by comparing the values detected in a sensor CT and the power-generation CT, thereby preventing the generating efficiency from being reduced. The disclosed apparatus for diagnosing the failure of the electromagnetic-inductive power supply apparatus detects detection values of a power-generation CT and a sensor CT, converts detection values into converted value by scaling detection values, and diagnoses whether the current transformer has failed and whether the power-outage has occurred based on converted values.

Growing community of inventors

Gwangju-si, South Korea

Jung-Hyun Choi