Pre-Charging a Capacitor Bank

摘要

Systems and methods of pre-charging a capacitor bank are provided. In particular, a power switch and a current limiting device can be coupled in series between a power source and a capacitor bank. Operation of the power switch can be controlled to limit a peak charging current applied to the capacitor bank during a pre-charging process. In this manner, a duty cycle of a pulse signal can be modified based at least in part on a measured current flowing into the current limiting device. In addition, a voltage at the capacitor bank can be monitored, and the pre-charging process can be ceased when the monitored voltage reaches a threshold.

主权项

1. A system for pre-charging a capacitor bank, the system comprising:
a power switch coupled in series to a direct current input source; a current limiting device coupled in series between the power switch and a capacitor bank comprising one or more capacitor devices; a first control device configured to control the operation of the power switch by:
receiving one or more signals indicative of a charge current associated with the capacitor bank; andcontrolling operation of the power switch based at least in part on the charge current; a second control device configured to determine a capacitor bank voltage at the capacitor bank and to control operation of the first control device based at least in part on the determined capacitor bank voltage.