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Content available remote Heatsink design using iterative calculation and thermal simulation for three-phase inverter
Resutik Patrik, Kascak Slavomir
Przegląd Elektrotechniczny
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2020
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R. 96, nr 12
63--66
EN
The design of the power electronics system requires a crucial step – power loss estimation. When losses are estimated by the simulation approach it can significantly reduce the design time of the device cooling solution. This paper presents an estimation of power losses in three phaseinverter in different operation points, to determine the worst-case scenario. For this simulation, MATLAB Simulink is used, and simulation results in the form of the losses are used in another software to visualize thermal spreading at the heatsink.
PL
W projektowaniu urządzeń energoelektronicznych dużą rolę odgrywa ocena strat mocy skutkujących wydzielaniem ciepła. Artykuł prezentuje ocenę strat mocy w trójfazowym przekształtniku. Określono rozpraszanie się ciepła w tym urządzeniu.
2
Content available A novel in-phase disposition SPWM pulse allocation strategy for cascaded H-bridge inverter
Zhang Y., Xiong J., Kong L., Wang X.
Archives of Electrical Engineering
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2018
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Vol. 67, nr 2
361–-375
EN
A novel in-phase disposition (IPD) SPWM pulse allocation strategy applied to a cascaded H-bridge (CHB) converter is presented in this paper. The reason causing the power of the CHB converter imbalance is analyzed according to the traditional structure, the conception of power imbalance degree is introduced and the principle of the novel in-phase disposition SPWM allocation strategy is deduced in detail. The new pulse allocation scheme can ensure the power balance in 3/4 cycles through interchanging the PWM pulse sequence of the different CHB cell, meanwhile it makes the full advantage of the IPD control strategy, lower the total harmonic distortion (THD) of line voltage compared to a carrier phase shifted (CPS) control strategy, which is verified by theoretical derivation. A seven-level cascaded inverter composed by three H-bridge cells is taken as the example. The simulation and experiment is performed. The results indicate the validity of the analysis and verify the effectiveness of the proposed SPWM allocation strategy.
3
Content available Selection of 5 kW Converter Leg for Power Electronic System
Zygmanowski M., Michalak J., Jeleń M., Jarek G.
Measurement Automation Monitoring
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2017
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Vol. 63, No. 8
282--287
EN
Three converter leg variants are analyzed for low power converter used for power electronic system for residential buildings. The two-level Si-IGBT and SiC-MOSFET converters are compared with Si-IGBT three-level T-type converter. Power losses generated in each of these converters over a predicted period of 20 years of operation are contrasted with the cost of converter options. The detailed selection procedure for output inductor is presented in this paper. This procedure shows the influence of the inductor parameters like number of turns, air gap length on its losses, cost and size. Theoretical approach is verified with simulations and experimental results.
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