[논문]식스 스텝 운전을 이용한 선박용 DC 전력 시스템의 직류단 전압 제어

윤종훈; 손영광; 설승기

doi:10.6113/tkpe.2021.26.4.263

식스 스텝 운전을 이용한 선박용 DC 전력 시스템의 직류단 전압 제어
DC Bus Voltage Regulation With Six-Step Operation in Maritime DC Power System 원문보기

전력전자학회 논문지 = The Transactions of the Korean Institute of Power Electronics, v.26 no.4, 2021년, pp.263 - 270

윤종훈 (Dept. of Electrical and Computer Engineering, Seoul National University) , 손영광 (Korea Electrotechnology Research Institute) , 설승기 (Dept. of Electrical and Computer Engineering, Seoul National University)

Abstract ▼ AI-Helper

Active AC/DC converters with PWM operation are utilized to regulate rectified DC bus voltage of a permanent magnet synchronous generator in the maritime DC power system. A DC bus voltage regulation strategy that exploits the six-step operation is proposed in this study. Compared with that of the PWM operation, switching loss of the converter can be significantly reduced under the six-step operation. Moreover, conduction loss can also be reduced due to the high modulation index and reduced flux-weakening current of the six-step operation. A controller is used for the proposed DC bus voltage regulation strategy to verify its validity with the simulation and experimental setup. The simulation and the experimental test results showed that the converter loss reduces to a maximum of 70% and 19%, respectively.

주제어

표/그림 (13)

$Fig. 1. <TEX>$i_{dqs}^{r}$</TEX> of the conventional system for (a) MPPA operation and (b) the flux-weakening operation.$ 그림 Fig. 1. $i_{dqs}^{r}$ of the conventional system for (a) MPPA operation and (b) the flux-weakening operation.
$Fig. 2. <TEX>$i_{dqs}^{r}$</TEX> under the six-step operation (a) with fixed DC bus voltage regulation and (b) variable DC bus voltage regulation for MPPA operation.$ 그림 Fig. 2. $i_{dqs}^{r}$ under the six-step operation (a) with fixed DC bus voltage regulation and (b) variable DC bus voltage regulation for MPPA operation.
$Fig. 3. <TEX>$i_{dqs}^{r}$</TEX> for the flux-weakening operation (a) under the six-step operation and (b) in both methods.$ 그림 Fig. 3. $i_{dqs}^{r}$ for the flux-weakening operation (a) under the six-step operation and (b) in both methods.
그림 Fig. 4. The block diagram of the proposed DC bus voltage regulation strategy.
그림 Fig. 5. SFOC map and OOL of 350kW diesel engine, AD158TI.
그림 Fig. 6. DC bus voltage regulator of the proposed control strategy.
그림 Fig. 7. Simulation results of the conventional and the proposed strategies.
$Fig. 8. Average <TEX>$i_{dqs}^{r}$</TEX> of the both strategies in the simulation.$ 그림 Fig. 8. Average $i_{dqs}^{r}$ of the both strategies in the simulation.
표 TABLE I PARAMETERS OF THE PM GENERATORS USED IN SIMULATION AND EXPERIMENTS
그림 Fig. 9. Switching, conduction, and converter losses of the both strategies.
그림 Fig. 10. Experimental results of the conventional and the proposed strategies.
$Fig. 11. Average <TEX>$i_{dqs}^{r}$</TEX> of the both strategies in the experiment.$ 그림 Fig. 11. Average $i_{dqs}^{r}$ of the both strategies in the experiment.
그림 Fig. 12. Total converter loss of the conventional and the proposed strategies in experiment.

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