Reduce THD and High Gain Solar Power Generation with Seven-Level BANPC Inverter
Keywords:
Solar Power, PV Array, Inverter, Seven Level, Active Neutral Point ClampedAbstract
This study proposes a seven-level power conversion system for a solar power generation system. This seven-level power conversion system consists of a cascade DC–AC inverter. The cascade DC–AC inverter comprises a full-bridge inverter and a T-type inverter. To reduce the dc-link voltage, a recent topology that enhanced the voltage gain from half to unity has been presented. In this letter, an alternative ANPC topology is established by using two T-type inverters. Two floating capacitors with self-voltage balancing capability are integrated to achieve a voltage-boosting gain of 1.5. In addition, the proposed topology is capable of generating seven voltage levels. Its operation is validated through circuit analysis followed by experimental results of a prototype.
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