A5038520870- Electric Motor Design and Analysis
- Sensorless Control of Electric Motors
- Photonic and Optical Devices
- Magnetic Bearings and Levitation Dynamics
- Liquid Crystal Research Advancements
- Semiconductor Lasers and Optical Devices
- Magnetic Properties and Applications
Konkuk University
2018-2023
This paper proposes an electrical parameter estimation method for permanent magnet synchronous motors (PMSMs) considering the voltage source inverter (VSI) nonlinearity. Accurate parameters are essential high-performance control of PMSMs. Therefore, numerous studies have been conducted to obtain accurate parameters. However, VSI nonlinearity causes distortion, which parameter-estimation errors. To address this problem, presents a solution using double-frequency double-amplitude (DFDA)...
In this paper, a driving topology for Polymer dispersed liquid crystal (PDLC) drive device is proposed. Currently, PDLC system uses to be connected grid through transformer, which makes it difficult change the voltage, thus can only used as an ON / OFF function. By using inverter, voltage easily changed and level of transparency film regulated. The proposed verified by experiments.