Abstract
Electric power systems are facing tremendous changes and power electronic devices are playing an increasingly crucial role in this transformation. In this contest, the study of power electronic devices behavior becomes of the utmost importance, and in particular, evaluation of their losses to understand their performance. Several methods can be found in literature to evaluate power or energy losses, but each of them is associated with shortcomings (such as missing an important factor or having narrow current or voltage range) that in practice become a strong limit to implement them or in a simulation process. To overcome this problem, this paper evaluates existing methods and proposes new loss calculation methods for power electronics losses that can be used within simulation tools at any converter configuration and application range, splitting power electronic losses into switching and conduction losses. The proposed new approach formulates each loss calculation procedure in a systematic way. The presented methods are implemented in Matlab Simulink and simulation results are compared with data obtained from the Semikron SemiSel v4 online tool, which is used as a benchmark. The outcomes reveal that, with this new approach, the proposed methods can cover wider working operation range compared to the existing methods having better accuracy.
Highlights
IntroductionOne of the main reasons behind these changes is the huge diffusion of power electronics technology in electric power and energy systems
Electric power systems have seen tremendous changes during recent years
To increase the losses calculation accuracy, the paper describes a new approach introducing some new methods for switching and conduction losses calculation of IGBT with
Summary
One of the main reasons behind these changes is the huge diffusion of power electronics technology in electric power and energy systems. It is essential to study the power converters’ behavior in detail aiming to design the best hardware and software solution able to improve their performance and efficiency. In this context, power electronics converter losses evaluation studies are becoming always more and more important. To reduce power electronics converters losses, zero voltage and zero current switching topologies have been developed and it is a topic of several research works e.g., in [9] and [10]. The authors in [14] and [15] aimed to design different power electronics devices with reduced losses
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