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During preliminary design sketch phases, the power electronics designer has to propose optimal solutions complying with system level requirements, which are continuously evolving since the global system is not finalized. It is particularly complicated in the cases of wide operating ranges where the optimal design for the most constrained operating point does not necessarily provides the optimal design...
A new ultra-low inductive 600 V / 200 A half-bridge power module, called LinkPack module, with integrated DC-link capacitors and common mode EMI shielding was realised. LinkPack module contains intentionally SiC-Mosfets, however it is also possible to equip Si-IGBTs and Si-diodes respectively SiC-diodes. This allows the realisation of full SiC-Mosfets modules, hybrid SiC modules and Si-IGBT / Si-diodes...
As technology advances, smaller feature size enables layout precision in the lateral direction. In contrast to traditional metal–insulator–metal capacitors, metal–oxide–metal (MOM) capacitors are generally of higher density and consume less area, because they adopt a 3-D topology over several metal layers to use lateral field capacitance. To achieve little area consumption, MOM capacitors require...
This paper presents a simple technique that can be used in the design of an unregulated power supply operating under light or heavy load conditions. The proposed technique proves to be much more accurate than traditional methodologies. The unregulated power supply represents the first element of most of the power supplies used in home appliances, so the selection of its components reveals to be fundamental...
This talk will go over the various considerations that lead into final selection of a package for a particular application and end form factor. These aspects not only include cost and performance requirements but also include die constraints and OEM PCB choices. It will show an example that for different tier of phones; these trade-offs are different which leads to unique package selection choices...
In this paper is presented the optimal design of a switching boost converter based on the reduced redundant power processing (R2P2) principle. Using the NSGA-II optimization method is found a set of optimal combinations for the converter parameters (inductors and capacitors), such that the open loop performance of the converter is improved. The constraints associated to current/voltage ripples and...
This paper introduces the general considerations for achieving the optimum design of bidirectional inductive wireless power transfer system (BIWPTS) for electric vehicle (EV) applications from electromagnetic field computations. The interface is used to charge and discharge the EV battery without physical connection. A FE model was developed based a proposed design strategy. The results are verified...
This work develops a systematic state-space approach to modeling of an improved buck-boost DC-DC converters. The averaged model of the converters is analyzed. Based on this model, a control law is design to keep the output voltage stable when the input is unstable. The simulation results are presented to confirm the capability of the converter to keep the output voltage stable. The proposed converter...
Various fault-tolerant inverter structures have been proposed, which are mostly reconfigured by fault-isolating fuses. The inverter design requirements for safe fuse blowing are investigated. Moreover, the effects of differing fuse characteristics and the influence on semiconductors during fuse interruption are evaluated in theory and with a practical setup.
This paper presents a novel design calculation scheme for low voltage Modular Multilevel Converters. One of the most important design values is to estimate the lifetime of the electrolytic cell capacitor. Therefore, a novel calculation method for the arm capacitor root mean square current is presented. Additionally, a new algorithm to estimate the power losses without a detailed simulation of the...
This paper discusses a design approach of an isolated type of single phase power converter that uses a matrix converter (MC) with a LC active buffer for the on-board vehicle battery charger in PHEV/EV. The MC is advantaged in terms of size due to the lack of DC bus, where the electrolytic capacitor is not required as direct conversion of AC/AC is possible. However, in the case of single phase, the...
In this paper a reliability analysis and cost optimization method for parallel power converter is proposed. Including a single converter reliability analysis model based on complex network, and a parallel system model to determine the optimum number of single converter X and N based on reliability analysis and cost analysis.
This paper presents a new approach for DC link RMS current estimation in systems with several converters and connected DC links. The proposed calculation method in frequency domain enables accurate and fast estimations for an optimized design of the DC link components considering effects of interconnection parasitics and PWM interleaving.
This paper provides a detailed overview of the dielectric design and insulation coordination applied to a medium voltage modular multilevel converter prototype. The complete system has ratings of 0.5 MVA and is designed for connection to a 10kVdc supply with a system voltage of 6.6kVac. The choice of air as insulating and cooling medium requires careful considerations regarding the clearance and creepage...
This paper uses the design by optimization method to determine the best combination of passives, EMC filter, heatsink, taking into account the components constraints, in order to reduce the weight of a SiC switching cell, implemented in a simple buck converter. All elements and associated restrictions are described using analytical expressions, and the optimizer performs the reduction of the objective...
This paper presents some key interactions among converters, which need to be taken into account when designing a modern embedded electrical grid, including a large amount of Power Electronics based loads. A design by Optimization method is first used to define the converter parameters. During this step, it is mandatory to account for the interaction between the input and output EMI filters. The second...
In the regeneration and filtering systems used in DC-traction substations, a separating circuit, between the catenary and the voltage source inverter, is necessary. It interacts with the compensating capacitance only in the regeneration mode of the system and affects the quality of the active power transfer resulted in the braking mode. The phenomena that occur are complex because the inverter operates...
The limited switching frequency, size and weight concerns, and the stringent limits for the injected grid current harmonics challenge the implementation of LCL grid filters for low-voltage multi-megawatt (multi-MW) renewable energy converters. Traditional design procedures of such filters employed in low power and high switching frequency converters may not hold for a multi-MW filter interfacing a...
This paper presents an extension to the switched capacitor DC-DC converter model when supplying loads stacked vertically. Stacking loads vertically drastically reduces the required size of a DC-DC converter, as it only needs to supply the mismatch current between the loads. Furthermore, when loads are perfectly matched, efficiency is only limited by the power consumption of the control loop, achieving...
A complete simulation methodology for the design of optimized Power Delivery Network dedicated to High Speed High Density electronic board is presented in this paper. Each part of the Power Supply Circuit is modeled either in the time domain or in the frequency domain with the adequate tools available on the market, and these models are correlated with measurement results thanks to a dedicated test...
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