ABSTRACT
Abstract ................................................................................................. 130 6.1 Introduction .................................................................................. 130 6.2 Three-Level NPC Inverter ........................................................... 135 6.3 T-Type Active Neutral Point Clamped (ANPC) Inverter ............. 136 6.4 Flying Capacitor Multilevel Inverter ........................................... 140 6.5 Hybrid Five-Level Inverter .......................................................... 140 6.6 Five-Level Cascaded NPC or T-Type Multilevel Inverter ........... 142 6.7 Cascaded H-Bridge Multilevel Inverter ....................................... 144 6.8 Comparison of Various Configurations ....................................... 148 6.9 Active and Reactive Power Control ............................................. 148 6.10 Concluding Remarks .................................................................... 149 Keywords .............................................................................................. 152 References ............................................................................................. 152
S. UMASHANKAR* and V. SRIDHAR
School of Electrical Engineering, VIT University, Vellore, Tamil Nadu, India
*Corresponding author. E-mail: shankarums@gmail.com
ABSTRACT
In a microgrid system, to interface the DC sources such as PV array, fuel cells, battery energy storage, etc. to an AC grid or to AC loads, it is required to have an Inverter as a power interface. When an inverter is connected to the grid, the power quality on the grid may be affected as the inverters are operated with pulse width modulation techniques. To achieve better power quality, to reduce the size and cost of output filter, control complexity, reliability and availability, the selection of inverter configuration is the main challenge. In this chapter, various inverter topologies suitable for microgrid applications are presented and comparison study on the basis of cost, control complexity, power quality, maintenance, etc. are carried out.
