SYSTEMS AND METHODS FOR INSULATION IMPEDANCE MONITORING

摘要

At least one aspect of the disclosure is directed to a power conversion unit (PCU). The PCU includes a power converter circuit, a safety detection circuit including a plurality of known network impedances and a switch having a first end coupled between two of the plurality of network impedances and a second end coupled to an output terminal, and a controller communicatively coupled to the safety detection circuit and the at least one power converter circuit. The controller may be configured to operate the switch, determine one or more voltage values of the safety detection circuit, and calculate an insulation impedance based at least in part on the one or more voltage values, a position of the switch, and the plurality of known network impedances.

主权项

1. A power conversion unit (PCU) comprising:
a power converter circuit; a safety detection circuit including a plurality of known network impedances and a switch having a first end coupled between two of the plurality of network impedances and a second end coupled to an output terminal; and a controller communicatively coupled to the safety detection circuit and the at least one power converter circuit, the controller being configured to operate the switch, determine one or more voltage values of the safety detection circuit, and calculate an insulation impedance based at least in part on the one or more voltage values, a position of the switch, and the plurality of known network impedances.