RC-Drives

Cost-Optimized IGBT for Consumer Drive Application

10

3

In-circuit Application Test on 200W Motor Drive board

3.1

Efficiency

In order to verify the improvement of the RC-DF in a real application conditions, the new devices

were tested on a demo board developed by Infineon and used as test bench to simulate a real

Air-conditioning outdoor fan. The board is designed for a 200W output and consists of an input

rectifier stage, inverter stage and output filter. The IGBTs are driven by a 600V 3-phase driver IC

from Infineon (6ED003L06-F), and the modulation pattern is provided by an 8 Bit Infineon

Microcontroller (XC-878) mounted on an external card. No heat-sink is required, just thermal

Vias through the PCB. The control method is sensor-less FOC using a single shunt-based

feedback loop. The board is driving a 200W induction motor coupled to an adjustable DC brake,

which allows controlling the output power from the inverter. The efficiency is monitored by a

Siemens Power meter and case temperature is monitored by an IR camera.

Figure 5: Test set-up for the application measurements