EMI filtering for active rectifier power systems

摘要

A system for filtering electromagnetic interference (EMI) includes a power source that provides alternating current (AC) power; a load; an active rectifier that converts AC power from the power source to direct current (DC) power for the load; and a filter connected between the power source and the active rectifier, wherein the filter comprises at least one notch filter that filters selected frequencies of EMI generated by the active rectifier.

主权项

1. A system for filtering electromagnetic interference (EMI) comprising:
a power source that provides alternating current (AC) power; a load; an active rectifier that converts AC power from the power source to direct current (DC) power; a dual-DC bus configured to provide the DC power to the load, including a positive line, a negative line, and a midpoint line; and a filter connected between the power source and the active rectifier, wherein the filter comprises at least one notch filter configured to filter at least third harmonic frequencies of EMI generated by the active rectifier.