Claims (9)
一種永磁馬達鐵芯損失量測方法，係包含：以一已知馬達特性之主動馬達透過一聯軸器耦接一待測馬達，並藉由一定電壓值致動該主動馬達而帶動該待測馬達旋轉，同時量測該主動馬達之轉速與時間的關係；及以一處理單元由該主動馬達之轉速與時間的關係，計算該主動馬達耦接該待測馬達時之時間常數，並依據該時間常數推得該主動馬達耦接該待測馬達時之轉動慣量，再藉由該轉動慣量運算產生該主動馬達耦接該待測馬達時之輸出功率，將該輸出功率減去該主動馬達空載時之輸出功率以計算該待測馬達之轉動鐵損。A permanent magnet motor core loss measuring method includes: coupling a motor to be tested through a coupling through a coupling motor of a known motor characteristic, and actuating the active motor by a certain voltage value to drive the standby motor Measuring the rotation of the motor, measuring the relationship between the speed of the active motor and the time; and calculating the time constant of the active motor coupled to the motor to be tested by a processing unit from the relationship between the speed of the active motor and the time, and The time constant derives the moment of inertia when the driving motor is coupled to the motor to be tested, and the output power of the driving motor when the driving motor is coupled to the motor to be tested is generated by the moment of inertia operation, and the output power is subtracted from the driving motor. The output power at no load is used to calculate the rotational iron loss of the motor to be tested.
依申請專利範圍第1項所述之永磁馬達鐵芯損失量測方法，其中該永磁馬達鐵芯損失量測方法另包含一步驟係量測該主動馬達之馬達特性，該馬達特性包含該永磁馬達空載時之轉動慣量，及該主動馬達空載時接受該定電壓值驅動之轉速與時間的關係。The permanent magnet motor core loss measuring method according to claim 1, wherein the permanent magnet motor core loss measuring method further comprises a step of measuring a motor characteristic of the driving motor, the motor characteristic including the The moment of inertia of the permanent magnet motor at no load, and the relationship between the speed and time at which the active motor is driven by the constant voltage.
依申請專利範圍第1或2項所述之永磁馬達鐵芯損失量測方法，其中依據該時間常數推得該主動馬達耦接該待測馬達時之轉動慣量的方式係如下式所示：τ/τ’
=J/J’
其中，τ
’為該主動馬達耦接該待測馬達時之時間常數，J’為該主動馬達耦接該待測馬達時之轉動慣量，τ
為該主動馬達空載時之轉動慣量受該定電壓值驅動之時間常數，J為該主動馬達空載時之轉動慣量。The method for measuring the loss of a permanent magnet motor core according to claim 1 or 2, wherein the method of estimating the moment of inertia when the driving motor is coupled to the motor to be tested according to the time constant is as follows: τ/τ'
=J/J’
Where τ
' is the time constant when the driving motor is coupled to the motor to be tested, and J' is the moment of inertia when the driving motor is coupled to the motor to be tested, τ
The time constant for which the moment of inertia of the active motor is driven by the constant voltage value, and J is the moment of inertia of the active motor at no load.
依申請專利範圍第1或2項所述之永磁馬達鐵芯損失量測方法，其中運算產生該主動馬達之輸出功率的過程係將該主動馬達之轉速與時間的關係微分，以產生該主動馬達之角加速度，將該角加速度乘上該主動馬達之轉動慣量，係為該主動馬達之輸出功率。
According to the method for measuring the loss of the permanent magnet motor core according to claim 1 or 2, wherein the process of generating the output power of the active motor is to differentiate the relationship between the rotational speed of the active motor and the time to generate the active The angular acceleration of the motor is multiplied by the moment of inertia of the active motor as the output power of the active motor.
依申請專利範圍第1或2項所述之永磁馬達鐵芯損失量測方法，其中計算該主動馬達之時間常數的方式係取該主動馬達之穩態轉速，並推算該主動馬達於啟動過程中轉速達到該穩態轉速之0.632倍所需耗費的時間，作為該時間常數。
According to the method for measuring the loss of the permanent magnet motor core according to claim 1 or 2, wherein the time constant of the active motor is calculated by taking the steady-state rotational speed of the active motor, and estimating the active motor during the starting process. The time taken for the medium speed to reach 0.632 times the steady state speed is taken as the time constant.
一種永磁馬達鐵芯損失量測裝置，係包含：一處理單元分別耦接一電壓源及一感測單元，該電壓源具有一輸出端供輸出一輸出電壓，該感測單元具有一感測端供量測馬達轉速資訊；一主動馬達，分別耦接該輸出端及該感測端，以接收該電壓源之輸出電壓，並供該感測單元量測該主動馬達之轉速，該主動馬達另具有一輸出軸；及一聯軸器具有一第一端與一第二端，該第一端連接該主動馬達之輸出軸，該第二端供連接一待測馬達之輸出軸；其中該永磁馬達鐵芯損失量測裝置另包含一恆溫箱，該恆溫箱相鄰該聯軸器之第二端設置且具有一容置空間，供容置該待測馬達。
A permanent magnet motor core loss measuring device comprises: a processing unit coupled to a voltage source and a sensing unit, the voltage source having an output terminal for outputting an output voltage, the sensing unit having a sensing The end motor supplies the motor speed information; an active motor is coupled to the output end and the sensing end respectively to receive the output voltage of the voltage source, and the sensing unit measures the rotation speed of the active motor, the active motor Another output shaft; and a coupling has a first end and a second end, the first end is connected to the output shaft of the driving motor, and the second end is connected to an output shaft of the motor to be tested; The magnetic motor core loss measuring device further comprises an incubator disposed adjacent to the second end of the coupling and having an accommodating space for accommodating the motor to be tested.
依申請專利範圍第6項所述之永磁馬達鐵芯損失量測裝置，其中該電壓源係為一可控電壓源，該處理單元係
控制該電壓源之輸出電壓值。
The permanent magnet motor core loss measuring device according to claim 6, wherein the voltage source is a controllable voltage source, and the processing unit is
Control the output voltage value of the voltage source.
依申請專利範圍第6項所述之永磁馬達鐵芯損失量測裝置，其中該永磁馬達鐵芯損失量測裝置另包含一散熱裝置，設置於該主動馬達周邊。
The permanent magnet motor core loss measuring device according to claim 6, wherein the permanent magnet motor core loss measuring device further comprises a heat dissipating device disposed around the active motor.
依申請專利範圍第6項所述之永磁馬達鐵芯損失量測裝置，其中該主動馬達為一無鐵心無刷馬達。
The permanent magnet motor core loss measuring device according to claim 6, wherein the active motor is a coreless brushless motor.