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Due to the increasing demand for highly efficient power electronic converters, a detailed design targeting each individual circuit component like magnetic components is getting more and more important. Several electric and calorimetric methods for the loss measurement of magnetic components are known from literature. Nevertheless, only the last approach can be used to properly perform measurements...
Electrolytic aluminum capacitors used in electric drive for automotive are deemed to be the weakest components of static power converters. A lot of studies have been made to estimate their aging but only for a nominal point. This paper presents a specific operation cycle implementation to study the impact of a variable and more realistic thermal cycling. Moreover, an improvement of the classical electrical...
The article deals with the design and implementation of a reduced scale laboratory platform consisting of a number of programmable emulators. By connecting these devices into the same grid, different micro-grid configurations can be emulated, allowing to perform many experiments related to its management, control and protection. Here, the proposed platform layout is described and its performance is...
The More-Electric Aircraft (MEA) requires thorough testing procedures to meet extreme security requirements. Real-time simulation technologies have been traditionally part of this validation and testing process for conventional aircraft designs. The MEA concept is now pushing HIL technologies toward aircraft electric system real-time simulation. This paper discusses the real-time simulation requirements...
Due to the challenge for sensorless control of concentrated windings (CW) interior permanent magnet synchronous machines (IPMSMs), this paper presents the analysis of a novel stator IPMSM for sen-sorless control based on high-frequency rotating voltage signal injection method. The topology of the machine is introduced and the new IPMSM has the advantage of less space harmonics. The sensorless control...
Power modules designed for hybrid/electric traction should fulfil lean manufacturing considerations. Robustness study of IGBT modules on the basis of a representative driving cycle is mandatory for safety reasons, cost and lifetime estimation. So power modules can not be oversized and harsh stresses applied conduct to review ageing tests. The power modules for motor drives are subject to multiple...
Electric propulsion system in marine application has been given high attention due to energy saving and low maintenance requirements. A transverse flux-type machine (TFM) with permanent magnets (PMs) has been developed as a direct-drive propulsion motor without gearbox called for high torque at low speed and high reliability simultaneously. This manuscript describes design procedure of the TFM using...
This paper presents a test circuit and methodology suitable for testing high-power half-bridge submodules such as would be used in cascaded converters for high-voltage dc converters. The circuit utilizes a series resonant tank and two half-bridge submodules with voltage and impedance cancellation in order to minimize hardware requirements.
Space Vector Modulation (SVM) approaches that decrease current ripples and switching losses of voltage source inverters for automotive applications and their DSP implementation are presented in this paper. To improve the quality of the energy delivered by the voltage source inverter (VSI), we combine two modulation strategies; Random Space Vector Modulation (RSVM) and Discontinuous Space Vector Modulation...
The Quasi-Z-Source-Inverter (QZSI) reveals an asymmetrical L-C-network structure in which unwanted oscillations can be triggered by input voltage disturbances (IVD). This paper presents an AC small signal model of the QZSI, derived from State Space Averaging, with emphasis on the influence of IVD. After the discussion of the small signal model, a novel cascade control strategy is developed to adequately...
Due to new applicative domains like embedded systems, power electronic converters are getting more and more compact, increasing their power densities and working in extreme environments with higher lifetime requirements in accordance with design to cost optimization. Power components packaging is thus involved in many research considerations such as thermal management, electromagnetic interference...
This paper presents a compact low-cost modular laboratory setup based on three-phase voltage source inverters for use in microgrid teaching. Such setups are important to give students practical knowledge in addition to theory and simulations. Often, laboratory setups are built with high voltage and/or current where supervision is required during lab exercises. This setup enables students performing...
With increased wind power penetration, grid codes of system operators require low voltage ride through (LVRT) capability for wind turbines (WT). This paper describes a full power test bench, designed to evaluate the functionality of grid connected converter in nominal operating mode and in case of LVRT. To verify the LVRT capability an inverter based voltage sag generator (VSG) is developed which...
This paper deals with the development of a Photovoltaics (PV) emulator for testing grid-connected inverters, taking the shading effect on the panels into account. The Single Exponential Model (SEM) of a PV array is used with appropriate approximations. The shading effect is modeled for a configuration of series connected panels, with bypass diodes, and two irradiance levels. This PV modeling is used...
Mechanical load simulators are useful in various cases, where we wish to test an electromechanical system. A mechanical load simulator can be used to emulate a wide variety of loads, such as industrial loads, electric vehicle drivetrain, etc. In this paper, a load simulator build for the testing of various electromotion systems, with the capability of four quadrant operation (positive or negative...
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