UPS will continue running until IGBT thermal sensor operates (rectifier, inverter or chopper).
UPS will continue running until IGBT thermal sensor operates (rectifier, inverter or chopper).
Yes, on the top. Fuji has verified a single power supply failure. That means that 2 fans failure simulated.
No, it is not. Only one type of caution message is displayed. Please visually check it because you do not know which fan has failed.
Each fan has a speed alarm. When any one alarm is detected, UPS will display “CAUTION” on LCD, and store a log “FAN ERROR”. UPM continues running.
The trade-off relationship of an IGBT describes the relation between ON-state conduction losses, switching losses and short circuit withstand capability. An IGBT can be optimized for either one. For example, when reducing the conduction losses, the switching losses will increase and the short circuit withstand capability decrease.
The calculation can be done by using the Fuji IGBT Simulator which you find on the webpage.
Yes. If the gate voltage VGE is high, short-circuit current ISC will increase, and short-circuit withstand time tSC will become shorter.
Yes, it is available on the web site. Please download the data from the link below.
They are used in industrial inverters, auxiliary inverters for equipment in the Shinkansen cars, high capacity UPS, electric power storage system, etc.
The benefits are the negligible small diode losses of the SiC diodes. In the following two comparative examples are given for an all-silicon device and a hybrid device with 1200V/300A rating. (1) If both modules have a fixed output current Io=212Arms and the switching frequency of the hybrid module is raised to 1.5 times of […]