A Reduced Switch AC-AC Converter with the Application of D-STATCOM and Induction Motor Drive

Abstract

In this paper, a reduced switch AC-DC-AC converter is used as a distribution static compensator (DSTATCOM) and induction motor drive. The AC-DC-AC nine switch converter (NSC) is a reduced switch topology of conventional 12-switch back to back converter. With a 25% reduced switch count, NSC has lower losses when operated at constant frequency mode compared to twelve switch converter (TSC). The idea is to operate NSC input terminal as an active front-end rectifier to mimic synchronous generator (SG) operation. The induction motor is connected at the output of the NSC for irrigation application where no speed regulation is required. In distribution generation (DG), a large capacitor bank is used to deliver required reactive power. This may lead to over-voltage at the point of common coupling (PCC) when the load is turned off. To manage reactive power transfer at PCC, a control scheme is developed for NSC such that it can absorb or deliver reactive power with induction motor drive. Similar to SG, V-curve and inverted V-curve is plotted. The simulation and hardware results prove the feasibility of the proposed system.

Applications of Power Electronics

“…In [39], the possibility of improving voltage source converter efficiency through optimal switching frequency selection is discussed. In [40], a new technique to improve power converter efficiency by reducing the switching count for a distribution static compensator (DSTATCOM) and induction motor drive applications is addressed.…”

Applications of Power Electronics

“…This special issue with 49 published articles has gained a great deal of attention from both academia and industry, clearly showing the growth in significance of "Applications of Power Electronics" in the current research and development arena. The accepted articles cover broad topics in the field of power electronics, and they are categorized into seven different focus areas: T1: Fault Diagnosis, Reliability and Condition Monitoring [14][15][16][17]; T2: Modeling, Control and Design of Power Electronic Converters [18][19][20][21][22][23][24][25]; T3: Electrical Machines, Drives and Traction Systems [26][27][28][29][30][31][32][33][34]; T4: Distributed Power Generation and e-Grid [35][36][37][38][39][40][41][42][43][44][45][46]; T5: Emerging Power Electronic Technologies (Pulsed Power, Energy Storage, Others) [47][48][49][50][51]; T6: Energy Access and Micro-Grids [52][53][54][55][56]; T7: Wireless Power Transfer Systems…”

A Direct Single-Phase to Three-Phase AC/AC Power Converter

“…The advancement of power electronic converters has made them useful in a variety of applications, including those in industry, domestic usage, flexible AC transmission systems, electrical motor drives, microgrids, and automobile and transportation. Much greater consideration is being given to the resilience [1][2][3], efficiency [4,5], and dependability of power electronics converters in the creation of power converter topologies. Due to safety regulations, power electronics systems must adhere to highly strict dependability standards in the automotive and transportation industries [6].…”