TIDUEY6 April 2021
The bi-directional DC-DC converter module is designed to charge the LV battery from HV battery bus when operate in forward direction and per-charge the DC bus capacitor in reverse direction. It is a separate module that plugs into control mother board to receive control power and signals and to send back inverter voltage and current sense signals as feedback. It consists of a main board and two gate driver daughter boards for isolated primary gate driver and power supply.
A block diagram of the traction inverter sub-system is shown in Figure 3-26.
A fully assembled picture of inverter module is shown in Figure 3-27. Details of various sub-modules will be discussed in subsequent sections.