'Level converter' presentation slideshows

Optimized design of a back-to-back NPC converter to be used as interface of renewable energies

429 views • 22 slides

LOW VOLTAGE OPERATION OF A 32-BIT ADDER USING LEVEL CONVERTERS

LOW VOLTAGE OPERATION OF A 32-BIT ADDER USING LEVEL CONVERTERS. Mohammed Ashfaq Shukoor ECE Department Auburn University. Objectives. To reduce the power consumption by operating the adder at reduced voltage, coupled with level converters.

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An Advanced Multilevel Converter Topology with Reduced Switching Elements

Smart grid applications, renewable energy utilization and electric vehicles (EVs) are attracting researchers due to their importance nowadays as well as in the future. An efficient power electronic converter is a main and common topic for research in this area. In this paper, a prototype of the electrical part of a power-train for EVs using an advanced multilevel converter topology is introduced, discussed and analysed. A comparison between the advanced converter, two-level and conventional multilevel converter topology is discussed as well. A switch function model is derived and discussed for the proposed converter. A mathematical model for the converter supplied by a fuel-cell (FC) and boost-converter (BC) is implemented with Matlab/Simulink. The simulation results are analysed to evaluate the converter. The evaluation is based on the harmonic analysis and power loss calculations. The converters are tested at different switching frequencies to show the effect of this variable on the converter loss. The results indicate that the proposed converter is 1.32% more efficient compared to conventional five-level DCC. Moreover, the lowest harmonic content, for all of the studied converters, is the proposed one

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Power Loss Evaluation Method for Modular Multi Level Converter with High Frequency

There is no common accepted way for calculating the valve power loss of modular multilevel converter MMC . Valve power loss estimation based on analytical calculation is inaccurate to address the switching power loss and valve power loss estimation based on detailed electro magnetic simulation is of low speed. To solve this problem, a method of valve power loss estimation based on the detailed equivalent simulation model of MMC is proposed. Results of valve power loss analysis of 201 level 500MW MMC operating at 50Hz~1000Hz are presented. It is seen that the valve power loss of a MMC increased by 12, 40 and 93 under 200Hz, 500Hz and 1000Hz operating frequency. The article concludes that in a device with isolated inner AC system, MMC operating at higher frequency will be more competitive than typical 50Hz 60Hz MMC with moderate increase of operating power loss and significant reduction of the size of the AC components. Gangadhara Swamy | Molugu Shruthi "Power Loss Evaluation Method for Modular Multi-Level Converter with High-Frequency" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-1 , December 2017, URL: https://www.ijtsrd.com/papers/ijtsrd7027.pdf Paper URL: http://www.ijtsrd.com/engineering/electrical-engineering/7027/power-loss-evaluation-method-for-modular-multi-level-converter-with-high-frequency/gangadhara-swamy

49 views • 4 slides

LiPo 11.1V

182 views • 2 slides