This design can naturally deliver
bidirectional energy, but the test setup must be well-considered, because the
transition mostly depends on the bidirectional source and load. The following
process is designed for bidirectional power transition testing:
Note: Because the E-load in this design
can only support up to 600V, the bidirectional test in this report used 400V
instead of 800V on the primary side, and the relay on the board is shorted
manually.
- Connect the HV DC source and HV
DC load, then at the same time, connect to the HV port of PMP41037 board
- Set the DC source voltage
to 400V and the current limit to greater than 3A
- Set the DC load to 1.4A
CC mode, and turn on
- Connect the LV port to the 12V
bidirectional DC source-load, keep turning off
- Power up the 12V bias power
- Launch code to the
TMDSCNCD280039C card, and keep the CCS connected, click the Resume button
in CCS and start the power stage
- Gradually increase the HV source
to 400V, with less than 1V / ms
- Set the LV source, the sink
current to –40A, the voltage to 0V, turn on to draw current
- Set the LV source, the source
current to +40A, change the LV source voltage setting from 0V to 7V, the LV side
current tranisents from –40A to +40A
- Change the LV source voltage
setting from 7V to 5V, the current transients from +40A to –40A