JAJU732C June 2019 – July 2022
Table 1-1 lists some of the critical design specifications of the dual-active-bridge (DAB) DC/DC converter. The system has a full load efficiency of 97.6% at an output power of 10 kW.
PARAMETER | SPECIFICATIONS | DETAILS |
---|---|---|
Input voltage range | 700-800-V DC | Section 3.1 |
Output voltage range | 380-500-V DC | Section 3.1 |
Output power rating | 10-kW maximum | Section 2.3.5 |
Output current | 26-A maximum | Section 2.3.5 |
Efficiency | Peak 98.2% (at 6.6 kW) full load 97.6% (at 10 kW) | Section 4.5 |
PWM switching frequency | 100 kHz | Section 2.3.4.6 |
Power density | >2 kW/L | Section 4.5 |
Voltage ripple | <5 % | Section 2.3.4.4 |
Table 1-1 shows that the input voltage range is between 700 V and 800 V. This range was considered because the DC/DC converter must interface with the front-end Vienna rectifier and the three-phase power factor correction (PFC), which has an output that is within this range. This converter can also be used in conjunction with single-phase PFC systems with an output that is in the range of 400 V, which must interface with 48- and 72-V batteries.