INTERMEDIATE CIRCUIT CAPACITOR SHORT-CIRCUIT MONITORING

摘要

The invention relates to an electronic circuit for short-circuit monitoring of one of at least two intermediate circuit capacitor units arranged in series, whereby the difference between the voltage at the node point between two of the units for monitoring and a reference voltage derived from the intermediate circuit voltage and relevant to the monitoring, are used as control signal, which, in the case of a capacitor short-circuit, exceeds or falls below a threshold value and an error signal is generated.