2021 Fiscal Year Research-status Report
A Novel Pulse-Amplitude Modulation Control with Fuzzy-based Automatic Excitation Angle and Adaptive Deadtime for Motor Drives in Consideration of Core Loss
| Project/Area Number |
21K14182
|
|---|
| Research Institution | Toyota Technological Institute |
|---|
Principal Investigator |
NGUYEN GiaMinhThao 豊田工業大学, 工学(系)研究科(研究院), 助教 (40895710)
|
|---|
| Project Period (FY) |
2021-04-01 – 2024-03-31
|
| Keywords | PAM and fuzzy control / IPMSM drive system / SiC/GaN inverter / Automatic excitation / Adaptive deadtime / Core and inverter losses / Reduction of harmonics / Extended building factor |
|---|
| Outline of Annual Research Achievements |
- In FY2021, an experimental interior permanent magnet synchronous motor (IPMSM) drive system using a three-phase SiC-MOSFET inverter was completely set up and tested. The pulse amplitude modulation (PAM) control algorithm with different excitation angles (120-180 deg) was also developed and implemented in the SiC-based IPMSM system. Besides, our laboratory has another IPMSM drive system using a GaN-FET inverter for further evaluation of the motor control and core loss.
- Effects of different dead-time values of the SiC-MOSFET inverter on the IPMSM core loss and inverter loss with the pulse width modulation (PWM) technique at high carrier frequency up to 200 kHz were performed in experiments. Furthermore, mutual impacts of the dead-time, high carrier frequency and modulation index of the SiC-MOSFET inverter on the iron loss of a ring core made by non-oriented and amorphous materials were investigated and examined.
- Moreover, finite element analysis (FEA) models in JMAG software to evaluate the core loss of the IPMSM and ring core were developed, and compared to experimental results. In addition, the extended building factor and its detailed conceptual diagram to thoroughly assess the iron loss density of the IPMSM under the sinusoidal and inverter excitations with measurement and FEA results were designed and performed.
- Research results in FY2021 were published in Journal of the Magnetics Society of Japan, journal Electronics, IEEE ISEE 2021 and IEEJ IAS conferences. In Jan 2022, my another related paper was accepted to present at international conference IPEC-Himeiji 2022.
|
| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
In fact, I have conducted a related research theme since 2018 by myself, so I have good specialized knowledge and solid experiences regarding the present research project. Furthermore, I have received the enthusiastic and effective support from the head professor (Prof. Dr. Keisuke Fujisaki) and students at my laboratory in Toyota Technological Institute as well as academic research collaborators. Therefore, the contents (including experimental motor drive systems, measurement equipment and methods, control algorithms, measured results, simulations, research publications, so forth) and progress of this research project are currently smooth and on schedule.
|
| Strategy for Future Research Activity |
- In FY2022, I focus on developing, improving and implementing my proposed PAM control method and adaptive dead-time algorithm in the experimental IPMSM drive system based on the SiC-MOSFET inverter. The motor core loss, copper loss, inverter loss and torque response as well as the performance and efficacy of the proposed control methods are measured. Then, the measured results will be analyzed and assessed thoroughly.
- Furthermore, regarding key research publications of this project in FY2022: In May 2022, my research paper on the extended building factor and its conceptual diagram on the IPMSM iron loss density was accepted (with minor revision required) in IEEJ Journal of Industry Applications; so, I will carefully revise this paper to officially publish in the journal. Then, I will submit another research manuscript, which considers the measured effects of different dead-time values of the SiC-MOSFET inverter on the IPMSM core loss at high PWM carrier frequencies, to a prestigious international journal.
- From FY2023, after the experimental motor drive and control systems are operated and evaluated well, MATLAB and JMAG software will be used for performing the detailed simulations and finite element analysis on the core loss, copper loss, torque response and other electromagnetic characteristics of the IPMSM under the proposed PAM control; the main goal is to validate the experimental results carefully. The comparison between the measured and simulation results is necessary and helpful. Besides, measured results with GaN-based IPMSM system will be additionally evaluated.
|
