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This paper presents a new prototype of a single-stage ac-ac converter with Silicon-Carbide (SiC)-MOSFET / SiC-SBD integrated power module for induction heating (IH) applications. Switching and conduction power losses are effectively reduced by virtue of the 1.2kV-120 A All-SiC power module under the condition of zero voltage soft-switching (ZVS), as compared to the counterpart solution using a Si-IGBT...
The complexity of energy systems is increasing continuously. The main driver for this is the number of components and systems that are involved in grid operation, optimization, and protection. Moreover, various interconnections among different components exist so that the behavior of one has impacts on many. This raises the requirement to thoroughly test and validate components and systems to be integrated...
This paper presents a galvanically isolated gate-driver integrated circuit realized as an ASIC chipset providing a flexible control of the switching speed of the driven power switches (i.e., IGBT or MOSFET). The driver chipset provides signal and power transmission over a galvanic isolation, thus being able to drive low-side and high-side power switches in power converters. It provides independent...
Procedural layout generation is common practice in digital, analog or RF circuit layout design. Designers generate mask designs by specifying only the key parameters of devices, digital or analog blocks and have algorithms construct the complete layout. But automated layout design is limited to Manhattan structures (orthogonal shapes) or to devices with 45° angles (typically octagonal inductors)....
High voltage pulse generators can be used effectively in water treatment applications, as applying a pulsed electric field on the infected sample guarantees killing of harmful germs and bacteria. In this paper, a new high voltage pulse generator with closed loop control on its output voltage is proposed. The proposed generator is based on DC-to-DC boost converter in conjunction with capacitor-diode...
Wide-bandgap power switches, based on SiC and GaN, are emerging on the semiconductor market. Standard resistor drivers are insufficient to exploit all the advantages of these new devices. Fine control over current and voltage waveforms during switching, equivalent on-state resistance and immunity to noisy environments, demand the development of dedicated drivers. This study aims at determining a suitable...
Dual three-phase (asymmetrical six-phase) induction motors have received significant attention in high power medium voltage drive applications. Typically, two three-phase voltage source converters are needed to feed such a drive system. In medium voltage applications, multilevel inverters are preferred as they provide a stepped output voltage waveform that reduces dv/dt stresses and provides a better...
A hybrid cascoded GaN switch configuration is demonstrated in power conversion applications. A novel metal package is proposed for the packaging of a D-mode GaN metal-insulator-semiconductor high electron mobility transistor (MIS-HEMT) cascoded with an integrated power MOSFET and a Schottky barrier diode. The normally-off cascode circuit provides a maximum drain current of 14.6 A and a blocking capability...
This paper present experimental results obtained during the construction of an SiC based inverter for high speed permanent magnet synchronous machines (PMSM). First a comparison between an IGBT and SiC modules used for the same application is presented. The modules static and switching losses are experimentally obtained and compared. The SiC module show significantly lower switching losses. Then the...
The growing demand for high-performance power converters calls for the adoption of new strategies, not only in architectures, but also in electronic technologies. To take full advantage of wide-bandgap semiconductor (SiC, GaN) power devices, and to exploit their amazing capabilities, dedicated drivers need to be developed. This paper presents a control unit for advanced gate drivers, based on a finite-state...
This paper proposes a current compensation method for current reconstruction from a DC-link current sensor. The method has region in which phase current reconstruction is difficult. To solve this problem, voltage reference and carrier compensation methods have been proposed. However, these methods increase the phase current harmonics. This paper proposes a current compensation method that uses the...
Printed Circuit Board (PCB) embedment is a rapidly developing packaging technology, with a number of benefits on power circuit implementation cost and circuit performance. Indeed, such a solution can deliver highly contained parasitic effects, higher power density, higher switching frequency operation and overall improved performance. This paper presents the design and development of a flyback converter...
Wide-bandgap devices are under the spotlight of scientific research as they exhibit great performance in terms of efficiency and temperature operation. However, to fully exploit their characteristics, dedicated driving circuits are needed. High-power gate-insulated switching devices exhibit important input capacitance; when fast switching speeds are demanded, high-current pulses are needed to drive...
This paper discusses the development of 5-watts-class flyback converter which can operate at switching frequencies from 1 to 16 MHz. In order to analyze fast switching operations, the input and output voltages with currents are measured for estimating the converter. The self-induced soft switching operation is experimentally investigated at a ringing frequency caused by parasitic components, including...
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