scholarly journals Cascaded Voltage and Current Control for a Dual Active Bridge Converter with Current Filters

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6214
Author(s):  
Michal Gierczynski ◽  
Lech M. Grzesiak ◽  
Arkadiusz Kaszewski
Keyword(s):  
Dynamic Models ◽  
Current Control ◽  
Future Research ◽  
Research Directions ◽  
Control Loops ◽  
Dual Active Bridge ◽  
Future Research Directions ◽  
Linear Effects ◽  
Application Fields ◽  
Current Ripples

The paper describes the cascaded voltage and current control for a bidirectional DC/DC converter in Dual Active Bridge (DAB) topology. The typical DAB converter circuit was extended by additional current filters, which allow it to operate in application fields with high requirements on current ripples. The core concept of the presented solution is usage of the modified Single Phase Shift (SPS) modulation, which allows to compensate for the DC-bias current occurring in dynamic states and provides a settling time of half switching cycle during transients. Its features were utilized to build a simplified dynamic model of the converter. The linear Proportional-Integral (PI) controllers are used in both voltage and current control loops. Based on the developed dynamic models, the tuning rules for both controllers were derived. In both cases, a number of the tuned parameters were reduced from two to one (which can present a great practical value for application engineers). The proposed solutions are validated based on a laboratory prototype. An important part of the experiments was devoted to non-linear effects occurring near the current limitation boundary of the system. The paper ends with a brief discussion regarding the future research directions.

Developing Management from Islamic Perspectives (MIP) as a Formal Academic Discipline

2009 ◽  
Vol 26 (1) ◽  
pp. 46-69
Author(s):  
Shamas-Ur-Rehman Toor
Keyword(s):  
Literature Review ◽  
Academic Discipline ◽  
Real Life ◽  
Growth Potential ◽  
Future Research ◽  
Business Practices ◽  
Research Directions ◽  
International Consortium ◽  
Future Research Directions ◽  
Scholarly Attention

Management from Islamic Perspectives (MIP) is an emerging field that has begun to attract scholarly attention. However, the research undertaken so far has been rather fragmented and lack a clear agenda. This paper presents a literature review of the field and the areas of current focus. Although the field has a huge growth potential, I argue that it faces several challenges and problems as it develops further. I outline these potential pitfalls, suggest how to develop MIP as a formal discipline, and explain how to integrate it within real-life business practices. The article closes with a call for research to be conducted in a more organized fashion through an international consortium of researchers as well as recommendations for future research directions.

Is Cannabis Tourism Deviant? A Theoretical Perspective

2019 ◽  
Vol 23 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Tianyu Ying ◽  
Jun Wen ◽  
Hairong Shan
Keyword(s):  
Moral Identity ◽  
Deviant Behavior ◽  
Theoretical Perspective ◽  
Research Note ◽  
Future Research ◽  
Research Directions ◽  
Tourism Research ◽  
Self Identity ◽  
Deviant Behaviors ◽  
Future Research Directions

With the growth of cannabis tourism, destinations such as the Netherlands have begun to offer cannabis-related products and services to visitors, including tourists from countries where all drugs are strictly prohibited. Yet limited research has sought to understand cannabis-oriented tourists' efforts to neutralize deviant connotations, namely by justifying or rationalizing misbehavior, when deciding to participate in cannabis tourism. This research note proposes a framework of deviant consumption behavior (DCB) constructed of geographic shifting, self-identity shifting, and moral identity shifting from the perspective of cannabis-oriented tourists to delineate tourists' decision-making process around engaging in deviant behaviors. The proposed framework suggests that previously developed DCB frameworks in the marketing and consumer behavior literature should be adapted for use in outbound tourism research. This research note also highlights areas for debate and investigation regarding cannabis tourists' deviant behavior. Future research directions are provided based on the proposed framework as it applies to deviant tourism research.

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