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EPE Journal Volume 22-1 - Papers
- Dual Active Bridge Modulation with Complete Zero Voltage Switching Taking Resonant Transitions into Account
- Actuator Circuits for the Complete Small Signal Characterization of DC/DC Power Converters
- Comparison of Si and SiC Power Semiconductor Devices in Power Electronics Converters to Be Used in Plug-in Hybrid Electric Vehicles
- Condition Monitoring of Subsea Electrical Equipment Using Motor Current Signature Analysis
EPE Journal Volume 22-1 - Editorial
By B. Lemaire-Semail; A. Bouscayrol; B. Robyns; Ph. Le Moigne
EPE'13 - ECCE Europe will take place in Lille, France from 3 to 5 September 2013: Welcome !
EPE Journal Volume 22-1 - Papers
By G. Guidi; A. Kawamura; Y. Sasaki; T. Imakubo
The paper proposes an optimized modulation scheme for the Dual Active Bridge (DAB) DC-DC converter topology, ensuring complete Zero Voltage Switching (ZVS) over the whole operating range. At first, ZVS limits for the modulation scheme in use are evaluated, taking the effect of resonant commutations into account. A strategy to achieve ZVS over the whole operating area is then proposed. A simple procedure to analytically calculate the switching pattern is presented, achieving high conversion efficiency without using complex loss models. Performance of the proposed control system is evaluated by actual measurements on a 2 kW DAB prototype, showing that complete ZVS is obtained over the whole operating range of the converter, resulting in high conversion efficiency even in the case of light load and buck/boost ratio considerably different from unity.
By M. Riva; D. Della Giustina; F. Belloni
An essential feature of modern power networks is their ability to efficiently manage the flow of power, e.g. for a better exploitation of renewable energy sources, for the load balancing in home automation systems, etc. To achieve those benefits smart power electronic interfaces – often working in DC – are needed. The interaction of multiple DC/DC power converters can give rise to complex stability issues. To evaluate the influence of a converter on the whole power system, an experimental characterization is needed. While techniques for the loop gain measurement are well established and usually adopted in test procedures, the characterization of input and output closed loop frequency responses is rarely performed, because it imply to inject small signals upon the steady state values in high voltage or with high current, as depicted in Fig. A. In those cases, the use of a power amplifiers has to be considered. Requirements of large bandwidth, high voltage and high current capability force to use top level instruments, not always accessible to all laboratories. As an alternative, the paper proposes to use some actuator circuits for the signal injection, giving some hints about how to design such circuits, and providing experimental proof of their use.
By M. Ghasem Hosseini Aghdam
With the fast development of silicon carbide (SiC) technology, SiC-based power semiconductor is ready to overtake Si in transportation applications. In this paper, Si and SiC-based power electronics converters for plug-in hybrid electric vehicle (PHEV) applications are designed and analyzed. Conduction and switching losses, efficiency, junction temperature, and the volume and weight of heat sinks of converters are calculated for a Si and SiC solution of a 65 kW three-phase inverter and of a 2.5 kW DC/DC converter. Comparison of the parameters mentioned above gives that SiC-based technology shows better performances than Si power semiconductor devices in the investigated converters. Finally, an economical evaluation shows that the SiC components can cost almost 2.5 times more in order to have the same total cost as for a Si solution for a 15 years operation.
By L. Sivertsen; B. T. Hjertaker; T. E. Kjenner; S. Stjernberg
This paper presents experimental work related to MCSA (Motor Current Signature Analysis) based condition monitoring of subsea electrical equipment using induction motors. In the presented work an experimental motor setup intended for current analysis is expanded to include a frequency converter and a cable model, simulating a 20 km long subsea power supply cable. The motivation for the work relates to the use of pumps in subsea oil and gas production. The presented work, which includes experiments on induction motors with different fault configurations, shows that it is possible to detect certain fault conditions in an induction motor using MCSA, also when the power system includes a frequency converter and/or long cable lengths. Even though it is not possible to directly transform the results from these experiments to a subsea oil and gas production system, the experimental results indicate that neither the use of a frequency converter nor the implementation of long cable lengths will be limiting factors for MCSA condition monitoring of subsea induction motors.
EPE Journal Volume 22-1: Other
By B. Sneyers
EPE'13 - ECCE Europe - Call for Papers