Publication
Bum-Ryeol Yoon, Tae-Hyeong Kim, June-Hee Lee, and June-Seok Lee, "Suppression of Zero Sequence Current Caused by Dead-time for Dual Inverter With Single Source," The Transactions of the Korean Institute of Power Electronics, vol. 27, no. 2, pp. 126-133, Apr. 2022.
2022
PEEMS
-
Aug. 9, 2023
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1. Authors: Bum-Ryeol Yoon, Tae-Hyeong Kim, June-Hee Lee, and June-Seok Lee
2. Title: Suppression of Zero Sequence Current Caused by Dead-time for Dual Inverter With Single Source
3. Journal: The Transactions of the Korean Institute of Power Electronics
4. Vol/no/pp: vol. 27, no. 2, pp. 126-133
5. Date: Apr. 2022
6. Abstract
: This study proposes a suppression of zero sequence current (ZSC), which is caused by zero sequence voltage (ZSV) for a dual two-level inverter with single DC bus. Large output voltages enable the dual inverter with single DC bus to improve a system efficiency compared with single inverter. However, the structure of dual inverter with single DC bus inevitably generates ZSC, which reduces the system efficiency and causes a current ripple. ZSV is also produced by dead time, and its magnitude is determined by the DC bus and current direction. This study presents a novel space vector modulation method that allows the instantaneous suppression of ZSC. Based on a condition where a switching period is twice a sampling (control) period, the proposed control method is implemented by injecting the offset voltage at the primary inverter. This offset voltage is injected in half of the switching period to suppress the ZSC. Simulation and experiments are used to compare the proposed and conventional methods to determine the ZSC suppression performance.
- Aug. 9, 2023 Tae-Hyeong Kim, Bum-Ryeol Yoon, June-Hee Lee, and June-Seok Lee, "A Power Loss Reduction Method of a Flying Capacitor Dual-Inverter Using DPWM based on Active and Reactive Power Separation Control," The Transactions of the Korean Institute of Electrical Engineers, vol. 71, no. 8, pp. 1108-1116, Aug. 2022.
- Aug. 9, 2023 Joon-Seok Kim, Do-Hyen Kim, June-Hee Lee, and June-Seok Lee, "Implementation Method of Overmodulation Technique With High Linearity in DSP," The Transactions of the Korean Institute of Power Electronics, vol. 27, no. 2, pp. 118-125, Apr. 2022.