本文研究重點是以三只線性霍爾元件作為馬達轉子磁場位置回授裝置,並以間接磁場導向控制來驅動軸向磁通永磁同步馬達,以改善傳統以數位霍爾感測元件作為轉子位置回授,於馬達啟動及低速運轉需用六步波驅動而造成振動與噪音過大之缺點。為克服電動載具於低速爆衝之問題,於啟動及低速時加入速度控制;中、高速時由速度控制切換到電流控制,並且於切換過程中轉矩之輸出必須達到平順及連續。 依據台灣電動機車性能及安全測試規範(Taiwan E-scooter Standard, TES)標準推導電動機車所需煞車力及可分配至煞車回生轉矩,並透過動力平台模擬實車進行煞車回生的狀況。 最後,以數位訊號處理器(TMS32028035)做為控制核心建構馬達驅動器,以三陽E-WOO電動機車作為測試平台,將一只軸向磁通永磁同步馬達及一只行星齒輪透過機械加工安置到電動機車上以驗證所提方法。
In order to reduce acoustic noise and vibration yielded by six-step voltage control for PMSM with digital Hall-effect sensor as rotor flux-position sensor, this thesis presents a rotor magnetic flux position detection method with three linear Hall-effect sensors and validates the proposed method on an AFPM motor. Speed control is used in startup and low speed situations to avoid unintended acceleration. Then, system is switched to current control after reaching a nominal speed. Smooth and continuous of output torque is required when switching occurs. Furthermore, the require torque of regenerative braking during e-scooter decelerate is calculated according to Taiwan E-scooter Standard(TES). The simulation of regenerative braking through dyno platform is done to verify the estimation. Finally, using a MCU TMS320F28035 and SYM’s E-WOO as a test platform are built to verify the effectiveness of the proposed methods on an AFPM motor.