A control method and arrangement that monitors the condition and operating parameters
of a power electronic system having power electronic devices and responds to various
detected abnormalities to optimize operation of the power electronic system. The
arrangement increases reliability of operation and optimizes the continuous supply
of power to a load. The arrangement also includes the capability for diagnosing
the parameters of the power electronic switches including drive current, drive
voltage and operating temperature and for communicating the status information
in a coordinated fashion.