本文旨在設計應用於養殖水車複合供電之三相永磁式同步電動機驅動系統。此系統可概分為驅動器與供電電源二部分。前者使用電壓空間向量脈波寬度調變直流-交流功率轉換器，以提高系統之直流鏈電壓利用率，並藉線性霍爾偵測元件回授三相永磁式同步電動機轉子磁極角位置及轉速，進行電流及轉速閉迴路控制，提高系統運轉效率。另者，電網供電部分採用橋式二極體整流及單相全橋式功率轉換架構，將市電轉換為直流鏈電壓48.0V的電源；而太陽能發電系統則以雙臂交錯式昇壓型轉換器，配合太陽能最大功率追蹤及電流控制，提供高能源轉換效率之電源。市電及太陽能複合供電，可減少市電用量，達到節能的效果。
本文之系統以32位元微處理器XMC1404為控制核心，並以軟體程式執行系統之控制策略。三相永磁式同步電動機驅動系統之量測，則分別以外加直流電源、市電及市電與太陽能複合供電等三種方式進行。在轉速為1500rpm下，實測結果顯示，當外加直流鏈電壓為48.0V時，變流器輸入端電流與功率分別為8.1A及390.0W，變流器輸出功率為366.0W，電動機機械轉矩與相電流峰值分別為2.08N-m及17.1A，相電流總諧波失真率為4.4%，三相變流器與電動機效率分別為93.8%及89.2%，算得整體效率為83.7%；而在僅由市電供電之情況下，直流鏈電壓為43.6V，變流器輸入與輸出功率分別為183.1W及167.8W，算得變流器效率為91.6%；最後，在市電與太陽能複合供電下，太陽能發電系統提供68.5W至電壓為46.0V之直流鏈，全橋式功率轉換器之輸出功率由原本直流鏈端之輸入功率272.3W降到204.0W，三相變流器之輸出功率為240.2W，算得變流器效率為88.2%，此時後級三相永磁式同步電動機相電流峰值與總諧波失真率分別為11.2A及5.4%，實驗結果驗證了本文系統之可行性。

This thesis aims to design three-phase permanent-magnet synchronous motor (PMSM) drive powered by grid and solar hybrid energy for aquatic breeding aerators. The proposed system mainly contains two parts, namely the driver and its power supply. The former is a PMSM driven by three-phase, three-arm power inverter using voltage space vector pulse-width modulation to enhance the utilization ratio of dc-link voltage. In addition, linear hall-effect sensors are used to detect the rotor position and rotational speed to facilitate current and speed closed-loop controls for efficiency improvement. On the other hand, a bridge rectifier and single-phase full-bridge power converter are built to establish the dc power supply for dc-link voltage of 48.0V from power grid. Moreover, a two-arm interleaved boost converter along with the maximum power point tracking are proposed to improve the efficiency of power conversion for solar energy generation. The grid and solar hybrid power supply can reduce the utility power consumption and thereby save the energy.
The 32-bit microprocessor, XMC1404, is adopted as the system core. All control strategies are accomplished with C language. Experimental evaluation of the three-phase PMSM drive system is conducted with three different cases of power supply. Specifically, the scenarios of the driver powered by dc source, grid as well as grid and solar hybrid energy. At motor speed of 1500rpm, experimental results show that when a dc-link voltage of 48.0V is provided by a dc source, the current and power at inverter input are 8.1A and 390.0W, respectively. The inverter output power is 366.0W. The corresponding PMSM torque, phase current and its total harmonic distortion (THD) are 2.08N-m, 17.1A and 4.4%. The efficiencies of inverter and PMSM are 93.8% and 89.2%, respectively, resulting in the overall efficiency of 83.7%. Besides, when the dc-link voltage of 43.6V is supplied by power grid, the input and output powers of inverter are 183.1W and 167.8W, respectively. This yields the inverter efficiency of 91.6%. Finally in grid and solar hybrid power supply case, the solar power subsystem provides 68.5W to the dc-link voltage of 46.0V, the output power of single-phase full-bridge power converter is reduced from 272.3W to 204.0W, with the inverter output power of 240.2W. This gives the inverter efficiency of 88.2%. The corresponding PMSM phase current and its THD are 11.2A and 5.4%. In short, the feasibility of the proposed system is verified experimently.

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