Publication
Tae-Hyeong Kim, June-Hee Lee, YeJin Kim and June-Seok Lee, "PWM Technique of Dual Inverter with Isolated DC bus considering Power Factor to Minimize and Balance Power Losses," IEEE Transactions on Power Electronics, vol. 40, no. 3, pp. 4303-4313, March 2025.
2025
PEEMS
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Nov. 19, 2024
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1. Authors: Tae-Hyeong Kim, June-Hee Lee, YeJin Kim and June-Seok Lee
2. Title: PWM Technique of Dual Inverter with Isolated DC bus considering Power Factor to Minimize and Balance Power Losses
3. Journal: IEEE Transactions on Power Electronics
4. Vol/no/pp: vol.40, no.3, pp.4303-4313
5. Date: March 2025
6. Abstract
: This paper proposes a clamping modulation technique considering the power factor to balance and minimize power losses in a dual inverter with an isolated dc bus. The dual inverter, used to drive an open end winding permanent magnet synchronous motor can output a higher voltage than a single inverter with respect to the same DC voltage. However, the dual inverter, which has six legs, has twice as many switching actions as a single inverter composed of three legs during one switching period The increased switching actions cause power losses of the switch and reduce the efficiency of the system. In this paper, a new PWM technique is proposed that secures the clamping sections by using switching state combinations and space vector combinations to minimize power losses. The proposed combinations consist of active vectors and zero vectors corresponding to space vector considering the relationship between the voltage vectors of the primary and secondary inverters to clamp four of the six legs. The switching state combinations are configured differently for sectors divided by the angle of the stator current to select the clamping sections considering the power factor. In addition, they equalize the upper and lower clamping sections by distributing the zero vectors. The validity of the proposed technique is verified through simulation and experiment.
- Dec. 2, 2024 Do-Hyeon Kim, June-Hee Lee, Joon-Seok Kim, and June-Seok Lee, "Compensation Method for Neutral-Point Voltage Fluctuation in Four-Leg Inverter Dual-Motor System", IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 13, no. 2, pp. 1687-1698, April 2025.
- Aug. 21, 2024 EunWoo Lee, June-Hee Lee, Do-Hyeon Kim, Dongho Choi, and June-Seok Lee, "An Extended DPWM Method for Switching Loss Reduction with Dual Induction Motors Fed by Five-Leg Inverter," IEEE Transactions on Industry Applications, vol. 61, no. 1, pp. 301-312. Jan-Feb. 2025.