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This paper presents a parallel-connected Single Active Bridge (SAB) dc-dc converter for high-power applications. Paralleling lower-power converters can lower the current rating of each modular converter and interleaving the outputs can significantly reduce the magnitudes of input and output current ripples without increasing switching losses or device stresses. Analysis of both the input and output...
This paper describes a theoretical and experimental study on a digital communication system, which is employed in a control strategy for parallelism of three-phase voltage inverter (VSI). This control strategy only needs that all VSIs use a same voltage reference and thus it ensures the sharing of the load current and avoids current circulation among the inverters during transient and steady-state...
IGBT are the most important power semiconductor in high power converter [1,2,3,4] up to the MW range. To reduce the switching losses, Field-Stop-IGBTs are used in high voltage applications in comparison with Non-Punch-Through-IGBTs [5]. To increase the current carrying capacity of converters, for example in high power traction applications, it is common to connect IGBTs in parallel. Gate drive circuits...
Paper deals with the construction of the electric-kart as a student project. The project was solved by two master thesis and a few semester thesis. The power of this kart is equal to the kart for rent equipped with the combustion engine. The chassis is equipped with Li-ion batteries and DC-motor.
This paper discusses a multi-parallel drive system for permanent magnet synchronous motors PMSMs). This system proposes to use two different functions of inverter, a main inverter with V/f control to control the speed of all parallel connected PMSMs. Then, each of PMSM is individually connected with an auxiliary inverter. The auxiliary windings which are used in the auxiliary inverter are placed in...
An Experimental performance analysis of a parallel connection of two 1200/80 MΩ silicon carbide SiC MOSFETs is presented. Static parallel connection was found to be unproblematic. The switching performance of several pairs of parallel-connected MOSFETs is shown employing a common simple totem-pole driver. Good transient current sharing and high-speed switching waveforms with small oscillations are...
In recent years, the concept of multi-inverter microgrid as the building block for the future distribution system has been commonly accepted and widely studied in literature. One of the recognized advantages of microgrids is the possibility of operate autonomously in absence of the main utility supply. In this case, droop control techniques are the most attractive solution for their capability of...
In this paper we present a guide to choose an energy efficient configuration of a pump drive system in an early stage of design process based on an user-defined load profile. All subsystem models are briefly presented, including different control methods (speed and throttle control) and single or cascaded pump drives. These models are based on free accessible parameters of data sheets. The analysis...
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