100kw inverter design

The University of Texas at Austinand VisIC Technologies cooperated on the 100kW inverter reference design that can be used as a base for inverter designs for EV, Industrial, PV, and other applications. WBG power technology is fast becoming the technology of choice to replace Silicon power technology in EV Motor Drive to achieve better efficiency.

Based on VisIC's unique D 3 GaN technology, this 100kW inverter reference design can be adapted to work both under 800V and 900V power-bus. The VisIC GaN devices have highly thermal efficient SMD packaging, high threshold voltage, fast switching and easy paralleling for most cost-effective, highly efficient, and reliable inverter solution for EV.

The total volume of this design is only 2.9 L (260 mm*202 mm*55 mm), which results in 34 kW/L power density at 100 kW output power. The volume distribution is shown in Fig 8. V. THE EXPERIMENTAL RESULTS A 100 kW three-phase inverter prototype is built in Fig. 9 and Fig. 10. The busbar is made in the lab based on the design in Fig. 7.

The paper has presented a design of a high-power-density (34 kW/L) SiC-based 100 kW EV traction inverter which operates at 105°C ambient temperature. The MOSFETs thermal operating points are analyzed and designed based on the expected power losses and cooling system ability.

The total volume of this design is only 2.9 L (260 mm*202 mm*55 mm), which results in 34 kW/L power density at 100 kW output power. The volume distribution is shown in Fig 8.

Based on this novel semiconductor technology, a modular and compact 3-phase 800 V drive-inverter for automotive application with a maximum output power of 100 kW was designed and realized. Using four parallel MOSFETs per switch, the system provides a maximum phase current of 150 Arms.