Capacitor control system
View Patent ↗Capacitor unit and capacitor control system used in high output power source are reduced in size. A capacitor unit controlled by the capacitor control system is divided into capacitor blocks formed of a specified number of capacitors connected in series, and each capacitor block is provided with a detector. Plural detectors are connected to a microcomputer by way of an analog switch.
1. A capacitor control system comprising:
a capacitor unit having a plurality of capacitors connected in a series connection, said capacitor unit being divided into capacitor blocks formed of a specific number of the plurality of capacitors connected in a series connection;
a plurality of detectors provided in the capacitor blocks; and
a microcomputer configured to be connected to said plurality of detectors by way of an analog switch for processing information obtained from said plurality of detectors,
wherein said plurality of detectors select arbitrary capacitors in the capacitor blocks and a voltage of the capacitors charges a condenser provided in said plurality of detectors, the condenser is isolated from a respective capacitor block, and said plurality of detectors determine the voltage of the isolated condenser, and said plurality of detectors detect voltages of the capacitors such that each of said plurality of detectors detect in each capacitor block connected, after once detecting all capacitors in a first detection, selectively the capacitors showing an abnormal voltage value in the first detection in a second detection.
2. The capacitor control system of claim 1 , further comprising
an equalizing operation of equalizing voltage capacitors followed by dividing the capacitors forming said capacitor unit into a plurality of first capacitor blocks in which capacitors are connected in series, equalizing the voltage of the divided first capacitor blocks, dividing each of the equalized first capacitor blocks further into a plurality of second capacitor blocks, each of the second capacitor blocks including at least one capacitor, equalizing the voltage of the divided second capacitor blocks, and repeating the dividing of the capacitor blocks and the equalizing of voltage until the voltage of the capacitors forming said capacitor unit are equalized; and
a detecting operation of capacitor voltages by using said plurality of detectors,
wherein the equalizing operation and the detecting operation are executed in time division.