Publication
Young-Min Go, and June-Seok Lee, "Offset Voltage Injection Method to Suppress the AC Voltage Ripple at a Neutral-Point in a Vienna Rectifier," Journal of Power Electronics, vol. 23, no. 9, pp. 1400-1410, Sep. 2023.
2023
PEEMS
-
Oct. 4, 2023
views
1. Authors: Young-Min Go, and June-Seok Lee
2. Title: Offset Voltage Injection Method to Suppress the AC Voltage Ripple at a Neutral-Point in a Vienna Rectifier
3. Journal: Journal of Power Electronics
4. Vol/no/pp: vol. 23, no. 9, pp. 1400-1410
5. Date: Sep. 2023
6. Abstract
: This paper proposes an offset voltage injection method to compensate for AC voltage ripple at the neutral-point of a Vienna rectifier. The proposed method leads to sinusoidal input currents and has a suppression effect on the AC voltage ripple at the neutral-point by injecting three offset voltages to remove both the zero current distortion and voltage unbalance (both DC voltage and AC voltage ripple) at the neutral-point. This can result in an improvement in the Total Harmonic Distortion (THD) of the input current. The offset voltage to realize the suppressing of the AC voltage ripple is defined based on a neutral-point voltage equivalence model of a Vienna rectifier. The priority of the offset voltages is considered to avoid over-modulation. In addition, incompatibility between offset voltages is analyzed to guarantee sinusoidal input currents. By considering both of these characteristics, the proposed method injects the offset voltages in order from the higher priority to the lower priority. The performance and effectiveness of the proposed method are verified with simulation and experimental results.
- Oct. 4, 2023 Jiho Ju, Dongho Choi and June-Seok Lee, "A Study on the Distributed-Control Architecture of a DSP-Based Solid-State Transformer System with Implementation," Energies, vol. 16, no. 16, Sep. 2023.
- Oct. 4, 2023 Tae-Hyeong Kim, June-Hee Lee, Bum-Ryeol Yoon, and June-Seok Lee, "Clamping Modulation Technique for Balancing Power Losses of Dual Inverter with Isolated DC Bus," IEEE Access, vol. 11, pp. 41868-41879, Apr. 2023.