Mitigation of DC and harmonic currents generated by voltage measurement errors and grid voltage distortions in transformerless grid-connected inverters

• Main Authors: Trinh, Quoc Nam, Wang, Peng, Tang, Yi, Choo, Fook Hoong
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Electrical and electronic engineering; Grid-connected Inverters; Measurement Errors
• Online Access: https://hdl.handle.net/10356/141524
• Institution: Nanyang Technological University

The dc offset and scaling errors in the voltage measurements cause the injection of undesired dc and harmonic currents into the three-phase output currents of the grid-connected inverter. This study proposes an enhanced current control scheme to eliminate the dc and harmonic currents caused by volta...