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We applied advanced heat dissipating technology to reduce heat resistances of the key devices to increase the output power density of the inverter. The IGBT modules were direct water-cooled, and the integrated DC-link capacitor was indirect water-cooled. We conducted the simulation and the test, which proved that reducing the heat resistances was effective to improve the output density of the inverter...
Reducing switch loss and increasing heat-sinking capability were very important research topic in the high power density inverter for EV/HEV applications. In this paper, an inverter with a new development power module was built. The power module was packed using a hybrid SIC power device to reduce the switching loss and direct cooling technology to decrease the thermal resistance. The double pulse...
A novel high-voltage interconnection (HVI) structure with dual trenches for 500V SOI-LIGBT is proposed in this paper. Compared with the conventional dual trenches structure, the proposed structure features a shallow trench (T1) and a deep trench (T2) beneath the HVI. By employing the shallow trench (T1), the potential can easily penetrate into the deep trench (T2) and the total potential sustained...
An integrated bootstrap diode emulator, including the high voltage field-effect-transistor (HV-FET), the gate control circuit and the back-gate control circuit, is experimentally proposed base on p-sub/p-epi bipolar-CMOS-DMOS technology for the first time. By adopting the gate and the back-gate control circuits, the charging time of the bootstrap capacitor can be improved by about 27% without any...
Compared with the silicon power devices, silicon carbide(sic) power devices are expected to have a great impact on inverter efficiency, weight, volume and reliability. In order to research on the sic power devices, A hybrid module with si IGBT and sic schottky diodes was built. In this paper, characters of si diodes and sic diodes were shown. Than switch characters of the all si module and hybrid...
Dynamic circuit is suitable for high-speed application, but often suffers from noise related reliability problems which become increasingly prominent as the technology are entering into the scores of nano meter era. This paper presented a new dynamic circuit scheme, which could achieve higher noise margin without sacrificing much power consumption and delay time. This design achieves a higher noise...
This paper proposes an active power control method for Doubly-Fed Induction Generator (DFIG) to convert wind power to electric power of constant frequency current with unity power factor. Instead of using conventional transformation between a-b-c frame and d-q frame, the proposed method independently adjusts the magnitude and phase of the stator output. The achieved response characteristic of the...
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