Why does a 48 volt inverter need a larger heat sink?

With a traditional low-voltage 48-V Si-FET inverter, the switching losses at 40-kHz PWM may already be significantly higher than the conduction losses and hence dominate the overall power losses. A larger heat sink is required to dissipate the excess heat; however, this increases system cost, weight, and space.

What type of inverter is used for high speed motor drives?

48-V, 10-A, High-Frequency PWM, 3-Phase GaN Inverter Reference Design for High-Speed Motor Drives 4.1.2 Power up and Power Down of 5-V and 3.3-V Rails The focus of this test was to validate the onboard 5-V and 3.3-V power supplies and measure the typical current consumption of the 3.3-V and 5-V rails.

Why do inverters lose power at 40 kHz?

Alternatively, the inverter losses increase with the switching frequency. With a traditional low-voltage 48-V Si-FET inverter, the switching losses at 40-kHz PWM may already be significantly higher than the conduction losses and hence dominate the overall power losses.

What is a power inverter used for?

Free and clean energy used as marine power inverter, vehicle power inverter and industrial power inverter and so on. Compact and portable for camping, road trip and ideal use in cars, vessels and for power FAILURE emergencies and power back-up for home.

What is a three-phase Gan inverter?

2.1 Three-Phase GaN Inverter Power Stage The three-phase GaN inverter is realized with three LMG5200 GaN half-bridge power modules. A bulk capacitor of 220 uF is used to buffer the 48-V DC input. The PCB employs two separated ground planes: the power ground (PGND) and the logic or analog ground (GND).

What is the maximum efficiency of a 48 volt PWM?

The theoretical maximum efficiency at a 48-V, 400-W maximum input power with a phase-to-phase voltage of 34-VRMS(space vector PWM) at a 7-ARMSphase current would be 98.7% at a 40-kHz PWM and 98.5% at a 100-kHz PWM. 4.3.2 Thermal Analysis and SOA