Patent ID: 11936307
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 10:
11. The power control system according to claim 10, wherein
the controller sets a switch signal for the disconnector to a first level when instructing the disconnector to open in the initial charge of the power converter, and sets the switch signal for the disconnector to a second level when instructing the disconnector to close after the initial charge of the power converter,
the controller includes
an impedance calculator to calculate an impedance of the line between the first node and the second node,
a disconnector open determiner to set an open determination signal to a first level when the calculated impedance is not less than the first threshold and set the open determination signal to a second level when the calculated impedance is less than the first threshold,
a first logic circuit to perform a logical computation of the switch signal and the open determination signal,
an overcurrent determiner to set an overcurrent determination signal to a first level when the accumulated value of the current flowing through the current control circuit within the certain period of time is not less than the second threshold and set the overcurrent determination signal to a second level when the accumulated value of the current flowing through the current control circuit within the certain period of time is less than the second threshold, and
a second logic circuit to perform a logical computation of the overcurrent determination signal and an output signal of the first logic circuit.