TWI666460B - Rapid test method for motor layer short - Google Patents
Rapid test method for motor layer short Download PDFInfo
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Abstract
一種馬達層間短路快篩方法，首先是設定不平衡率判斷值、相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值；接著在馬達處於運轉狀態時偵測產生三相電流不平衡率，並比對是否大於不平衡率判斷值；然後當三相電流不平衡率大於不平衡率判斷值時，偵測馬達產生三相電流相位角偏移值、馬達線圈溫升值與馬達振動值，並比對是否分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值；當三者皆分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值時，偵測三相電壓不平衡率是否在不平衡率容許值以內來判斷馬達是否發生層間短路狀況。 A method for quickly screening short-circuits between layers of motors. First, set an imbalance rate judgment value, a phase angle deviation judgment value, a coil temperature rise judgment value, and a motor vibration judgment value; and then detect that a three-phase current imbalance is generated when the motor is running. And compare whether it is greater than the judgment value of the imbalance rate; then when the three-phase current imbalance rate is greater than the judgment value of the unbalance rate, the detection motor generates a three-phase current phase angle offset value, a motor coil temperature rise value, and a motor vibration value And compare whether they are greater than the phase angle offset judgment value, the coil temperature rise judgment value and the motor vibration judgment value; when all three are greater than the phase angle deviation judgment value, the coil temperature rise judgment value and the motor vibration judgment value, respectively, Detect whether the imbalance rate of the three-phase voltage is within the allowable value of the imbalance rate to determine whether the motor has an interlayer short circuit condition.
Description
本發明係關於一種馬達層間短路快篩方法，尤其是指一種在馬達處於運轉狀態下進行檢測之馬達層間短路快篩方法。 The invention relates to a method for quick screening of interlayer short-circuits of a motor, in particular to a method of quick screening of interlayer short-circuits of a motor for detecting when the motor is in operation.
在現有的科技發展下，目前最常見的動力產生源主要包含以石化原料作為能源進行運作的引擎等熱機，或者以電力為能源進行運作的馬達等電動機，其中，由於馬達之運作可透過電力進行控制，因此在需要進行較精準作業的產業，大都還是以馬達所衍生的各種電機為主要設備。 Under the development of current technology, the most common power generation sources currently include heat engines such as engines operating with petrochemical raw materials as energy sources, or motors such as motors operating with electricity as energy sources. Among them, the operation of motors can be carried out through electricity. Control, so in industries that require more precise operations, most of them still use various motors derived from motors as the main equipment.
一般來說，馬達的運作原理主要是將設置於定子的線圈通電來產生磁場，進而使轉子受到磁場的作用而轉動，因此在正常的設計下，線圈的狀況取決了馬達是否能正常運作，也因此在馬達的生產過程中，通常會針對線圈進行多道的檢測，其中更以層間測試為主要的檢測項目。 In general, the operating principle of a motor is mainly to generate a magnetic field by energizing a coil provided on the stator, and then the rotor is rotated by the magnetic field. Therefore, under normal design, the condition of the coil depends on whether the motor can operate normally. Therefore, in the production process of the motor, multi-channel testing is usually performed on the coil, and inter-layer testing is the main testing item.
承上所述，由於繞成線圈的銅線很有可能在纏繞過程或組裝過程中，因為碰撞而造成表層的絕緣 漆破損，進而在通電時容易有短路的情形發生，因此層間測試會利用脈衝電壓來檢測線圈是否有短路的情形發生；然而，一般進行層間測試的時機主要是在線圈繞成後，或者是在線圈組裝於定子後，甚至在整個馬達組裝完成後，但這些測試的情況都是在靜止的情況下進行檢測，因此無法發現線圈受到馬達運作時所產生的溫度或轉動影響，甚至受到環境的影響而發生短路的情況，導致很有可能發生馬達在出廠前的檢測都沒問題，但到客戶端實裝運作後卻發生層間短路的情形。 As mentioned above, the copper wire wound into a coil is likely to be insulated during the winding process or assembly process due to collision. The paint is damaged, and it is easy to have a short circuit when power is applied. Therefore, the interlayer test uses pulse voltage to detect whether the coil has a short circuit. However, the timing of the interlayer test is generally after the coil is wound, or After the coil is assembled on the stator, even after the entire motor is assembled, these tests are performed under static conditions, so it cannot be found that the coil is affected by the temperature or rotation generated by the motor, or even by the environment. In the case of a short circuit, it is likely that the motor will be tested without any problems before leaving the factory, but after the client is installed and operated, a short circuit between layers will occur.
此外，對已裝機馬達的層間檢測方式需要在馬達處於停機狀態下進行檢測，因此當運行中的馬達發生異常時，往往需要將已經處於運作狀態之馬達停機進行檢測，此舉不但會嚴重影響產能，且若檢測結果並非層間短路時，更是白白浪費了過多的人力資源。 In addition, the inter-layer detection method of the installed motor needs to be detected when the motor is stopped. Therefore, when an abnormality occurs in the running motor, it is often necessary to stop the motor that is already in operation to detect it. This will not only seriously affect productivity And, if the detection result is not a short between layers, it is a waste of excessive human resources.
有鑑於在現有技術中，為了檢測運轉中的馬達是否有層間短路的情形發生，必須將馬達停機，進而影響了整體的產能，且若檢測結果並非層間短路問題時，更是做了白工；緣此，本發明的目的在於提供一種馬達層間短路快篩方法，可以對正在運作的馬達進行檢測，以供使用者可以判斷是否須停機作進一步的檢測。 Considering that in the prior art, in order to detect whether a running motor has an inter-layer short circuit, the motor must be stopped, which affects the overall production capacity. If the detection result is not an inter-layer short circuit problem, it is done in vain; For this reason, the object of the present invention is to provide a method for quick screening of interlayer short-circuits of motors, which can detect a running motor so that the user can determine whether to stop the machine for further detection.
為了達到上述目的，本發明提供了一種馬達層間短路快篩方法，係在一馬達接收一電力供應源所提供之電力而處於一運轉狀態時，用以快篩馬達是否發 生一層間短路狀況，馬達層間短路快篩方法包含以下步驟：首先步驟(a)是設定一不平衡率判斷值、一相位角偏移判斷值、一線圈溫升判斷值以及一馬達振動判斷值；接著步驟(b)是在馬達處於運轉狀態時，對馬達進行偵測而產生一三相電流不平衡率，並比對三相電流不平衡率是否大於不平衡率判斷值；然後當三相電流不平衡率大於不平衡率判斷值時，對馬達進行偵測而產生一三相電流相位角偏移值、一馬達線圈溫升值以及一馬達振動值，並比對三相電流相位角偏移值、馬達線圈溫升值與馬達振動值是否分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值；再來，當三相電流相位角偏移值、馬達線圈溫升值與馬達振動值分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值時，偵測電流之一三相電壓不平衡率是否在一不平衡率容許值以內；最後，當三相電壓不平衡率在不平衡率容許值以內時，判斷馬達發生層間短路狀況。 In order to achieve the above object, the present invention provides a method for quick screening between layers of motors. When a motor receives power provided by a power supply source and is in a running state, it is used to quickly screen whether the motor To generate a short circuit condition between layers, the method for quick screening between motor layer short circuits includes the following steps: The first step (a) is to set an imbalance rate judgment value, a phase angle deviation judgment value, a coil temperature rise judgment value, and a motor vibration judgment value. ; The next step (b) is when the motor is running, detecting the motor to generate a three-phase current imbalance rate, and comparing whether the three-phase current imbalance rate is greater than the judgment value of the imbalance rate; When the current imbalance rate is greater than the judgment value of the imbalance rate, the motor is detected to generate a three-phase current phase angle offset value, a motor coil temperature rise value, and a motor vibration value, which are compared with the three-phase current phase angle offset. Whether the value of the motor coil temperature rise and the motor vibration value are greater than the phase angle offset judgment value, the coil temperature rise judgment value and the motor vibration judgment value, respectively. Then, when the three-phase current phase angle deviation value, the motor coil temperature rise value and the motor When the vibration value is greater than the phase angle offset judgment value, the coil temperature rise judgment value, and the motor vibration judgment value, detect whether one of the three-phase voltage unbalance rates of the current is allowed at an unbalance rate Within; Finally, when the three-phase voltage unbalance unbalance allowable value or less, the motor to determine the occurrence of a short circuit condition layers.
在上述必要技術手段所衍生之一附屬技術手段中，步驟(c)更包含以下步驟：步驟(c1)，當三相電流不平衡率大於不平衡率判斷值時，對馬達進行偵測而產生三相電流相位角偏移值；步驟(c2)，比對三相電流相位角偏移值是否大於相位角偏移判斷值；步驟(c3)，當三相電流相位角偏移值大於相位角偏移判斷值時，對馬達進行偵測而產生馬達線圈溫升值；步驟(c4)，比對馬達線圈溫升值是否大於馬達線圈溫升值；步驟(c5)，當馬達線圈溫升值大於馬達線圈溫升值時，對馬 達進行偵測而產生馬達振動值；步驟(c6)，比對馬達振動值是否大於馬達振動判斷值。 In one of the subsidiary technical means derived from the above-mentioned necessary technical means, step (c) further includes the following steps: step (c1), when the three-phase current imbalance rate is greater than the judgment value of the imbalance rate, the motor is detected and generated. Three-phase current phase angle offset value; step (c2), comparing whether the three-phase current phase angle offset value is greater than the phase angle offset judgment value; step (c3), when the three-phase current phase angle offset value is greater than the phase angle When the judgment value is shifted, the motor is detected to generate a temperature rise of the motor coil; step (c4), compare whether the temperature rise of the motor coil is greater than the temperature rise of the motor coil; step (c5), when the temperature rise of the motor coil is greater than the temperature of the motor coil When the appreciation To detect and generate a motor vibration value; step (c6), compare whether the motor vibration value is greater than the motor vibration judgment value.
在上述必要技術手段所衍生之一附屬技術手段中，步驟(d)更包含以下步驟：步驟(d1)，當三相電流相位角偏移值、馬達線圈溫升值與馬達振動值分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值時，停止馬達之運作而使馬達處於停機狀態；步驟(d2)，利用一三相電壓計偵測馬達之三相電壓不平衡率，並比對三相電壓不平衡率是否在不平衡率容許值以內。 In one of the subsidiary technical means derived from the above-mentioned necessary technical means, step (d) further includes the following steps: step (d1), when the three-phase current phase angle offset value, the motor coil temperature rise value, and the motor vibration value are greater than the phase angle, respectively When the judging value of the offset, the judging value of the coil temperature and the judging value of the motor vibration, stop the operation of the motor to stop the motor; step (d2), use a three-phase voltage meter to detect the three-phase voltage imbalance rate of the motor, And compare whether the unbalance rate of the three-phase voltage is within the allowable value of the unbalance rate.
在上述必要技術手段所衍生之一附屬技術手段中，步驟(d)更包含以下步驟：步驟(d1)，當三相電流相位角偏移值、馬達線圈溫升值與馬達振動值分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值時，將一三相電壓計並聯於電力供應源與馬達間之電路；步驟(d2)，利用三相電壓計偵測電力供應源與馬達間之電路的三相電壓不平衡率，並比對三相電壓不平衡率是否在不平衡率容許值以內。 In one of the subsidiary technical means derived from the above-mentioned necessary technical means, step (d) further includes the following steps: step (d1), when the three-phase current phase angle offset value, the motor coil temperature rise value, and the motor vibration value are greater than the phase angle, respectively When the offset judgment value, the coil temperature rise judgment value and the motor vibration judgment value, a three-phase voltmeter is connected in parallel to the circuit between the power supply source and the motor; step (d2), the three-phase voltmeter is used to detect the power supply source and the The three-phase voltage unbalance rate of the circuit between the motors is compared with whether the three-phase voltage unbalance rate is within the allowable value of the unbalance rate.
在上述必要技術手段所衍生之一附屬技術手段中，相位角偏移判斷值為7°。 In one of the subsidiary technical means derived from the above-mentioned necessary technical means, the phase angle offset judgment value is 7 °.
在上述必要技術手段所衍生之一附屬技術手段中，線圈溫升判斷值為3℃。 In one of the subsidiary technical means derived from the above-mentioned necessary technical means, the judgment value of the coil temperature rise is 3 ° C.
如上所述，本發明是在馬達處於運轉狀態下，透過三相電流不平衡率與不平衡率判斷值之比較，可以初步判斷馬達是否有發生層間短路狀況，接著更比 較三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值是否分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值，進而增加判斷發生層間短路狀況的可能性，最後再透過為電力供應源所供應之電力是否有問題來再次加強發生層間短路狀況的可能性，藉此，本發明可以在馬達不停機的狀態下快篩出是否發生層間短路狀況，有效的減少馬達停機的時間，增加使用上的便利性。 As described above, in the present invention, when the motor is in the running state, the comparison of the three-phase current imbalance rate and the judgment value of the imbalance rate can be used to determine whether the motor has an interlayer short-circuit condition. Compare the three-phase current phase angle offset value, motor coil temperature rise value, and motor vibration value to whether they are greater than the phase angle offset judgment value, the coil temperature rise judgment value, and the motor vibration judgment value, respectively, thereby increasing the possibility of judging the occurrence of interlayer short-circuit conditions. Finally, the possibility of an inter-layer short-circuit condition is again strengthened through whether there is a problem with the power supplied by the power supply source. By this, the invention can quickly screen out whether an inter-layer short-circuit condition occurs without stopping the motor, which effectively reduces When the motor stops, it increases convenience.
100、100a‧‧‧馬達層間短路快篩系統 100, 100a‧‧‧Motor short-circuit short-screening system
1、1a‧‧‧分析模組 1.1a‧‧‧analysis module
11、11a‧‧‧儲存單元 11, 11a‧‧‧Storage unit
12、12a‧‧‧處理單元 12, 12a‧‧‧ processing unit
13、13a‧‧‧操作介面 13, 13a‧‧‧ operation interface
14、14a‧‧‧計算單元 14, 14a‧‧‧ Computing Unit
15、15a‧‧‧訊號接收單元 15, 15a‧‧‧Signal receiving unit
16‧‧‧控制單元 16‧‧‧Control unit
2、2a‧‧‧三相電流偵測元件 2, 2a‧‧‧three-phase current detection element
3、3a‧‧‧溫度偵測元件 3, 3a‧‧‧ temperature detection element
4、4a‧‧‧振動偵測元件 4, 4a‧‧‧Vibration detection element
5、5a‧‧‧三相電壓計 5, 5a‧‧‧three-phase voltmeter
200、200a‧‧‧馬達 200, 200a‧‧‧motor
300、300a‧‧‧電力供應源 300, 300a‧‧‧ Power supply source
S1‧‧‧三相電流訊號 S1‧‧‧Three-phase current signal
S2‧‧‧溫度偵測訊號 S2‧‧‧Temperature detection signal
S3‧‧‧振動偵測訊號 S3‧‧‧Vibration detection signal
S4‧‧‧控制訊號 S4‧‧‧Control signal
S5‧‧‧三相電壓訊號 S5‧‧‧Three-phase voltage signal
第一圖係顯示本發明第一較佳實施例所提供之馬達層間短路快篩系統之系統示意圖；第二圖與第二A圖係顯示本發明第一較佳實施例之步驟流程圖；第三圖係顯示本發明第二較佳實施例所提供之馬達層間短路快篩系統之系統示意圖；以及第四圖與第四A圖係顯示本發明第二較佳實施例之步驟流程圖。 The first diagram is a schematic diagram showing the system of the motor interlayer short-circuit quick screening system provided by the first preferred embodiment of the present invention; the second diagram and the second A diagram are flowcharts showing the steps of the first preferred embodiment of the present invention; The three diagrams are system schematic diagrams of the motor interlayer short-circuit short-screening system provided by the second preferred embodiment of the present invention; and the fourth and fourth diagrams are flowcharts showing the steps of the second preferred embodiment of the present invention.
下面將結合示意圖對本發明的具體實施方式進行更詳細的描述。根據下列描述和申請專利範圍，本發明的優點和特徵將更清楚。需說明的是，圖式均採用非常簡化的形式且均使用非精準的比例，僅用以 方便、明晰地輔助說明本發明實施例的目的。 The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagrams. The advantages and features of the invention will become clearer from the following description and the scope of the patent application. It should be noted that the diagrams are in a very simplified form and all use inaccurate proportions, only for Conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
請參閱第一圖，第一圖係顯示本發明第一較佳實施例所提供之馬達層間短路快篩系統之系統示意圖。如圖所示，一種馬達層間短路快篩系統100包含一分析模組1、一三相電流偵測元件2、一溫度偵測元件3、一振動偵測元件4以及一三相電壓計5。其中，馬達層間短路快篩系統100是在一馬達200接收一電力供應源300所提供之電力而處於一運轉狀態時，用以快篩馬達200是否發生一層間短路狀況。 Please refer to the first diagram. The first diagram is a schematic diagram showing a system for a motor short circuit screening system provided by the first preferred embodiment of the present invention. As shown in the figure, a motor interlayer short-circuit short-screening system 100 includes an analysis module 1, a three-phase current detection element 2, a temperature detection element 3, a vibration detection element 4, and a three-phase voltmeter 5. Among them, the motor inter-layer short-circuit short-screening system 100 is used to quickly screen the motor 200 if an inter-layer short-circuit occurs when the motor 200 receives power from a power supply source 300 and is in an operating state.
分析模組1包含一儲存單元11、一處理單元12、一操作介面13、一計算單元14、一訊號接收單元15以及一控制單元16。 The analysis module 1 includes a storage unit 11, a processing unit 12, an operation interface 13, a calculation unit 14, a signal receiving unit 15, and a control unit 16.
儲存單元11是儲存有一不平衡率判斷值、一相位角偏移判斷值、一線圈溫升判斷值、一馬達振動判斷值與一不平衡率容許值。 The storage unit 11 stores a judgment value of an imbalance rate, a judgment value of a phase angle deviation, a judgment value of a coil temperature rise, a judgment value of a motor vibration, and a tolerance value of the imbalance rate.
處理單元12是電性連結於儲存單元11，用以讀取或儲存不平衡率判斷值、相位角偏移判斷值、線圈溫升判斷值、馬達振動判斷值與不平衡率容許值，並用以將接收到之一三相電流不平衡率、一三相電流相位角偏移值、一馬達線圈溫升值、一馬達振動值以及一三相電壓不平衡率分別與不平衡率判斷值、相位角偏移判斷值、線圈溫升判斷值、馬達振動判斷值及不平衡率容許值進行比對判斷。 The processing unit 12 is electrically connected to the storage unit 11 for reading or storing the imbalance rate judgment value, the phase angle deviation judgment value, the coil temperature rise judgment value, the motor vibration judgment value, and the imbalance rate tolerance value, and is used for A received three-phase current imbalance rate, a three-phase current phase angle offset value, a motor coil temperature rise value, a motor vibration value, and a three-phase voltage imbalance rate, respectively, an unbalance rate judgment value, and a phase angle Compare and judge the offset judgment value, coil temperature rise judgment value, motor vibration judgment value and allowable value of imbalance rate.
操作介面13是電性連結於處理單元12，用以供使用者對處理單元12設定不平衡率判斷值、相位角 偏移判斷值、線圈溫升判斷值、馬達振動判斷值與不平衡率容許值，並將不平衡率判斷值、相位角偏移判斷值、線圈溫升判斷值、馬達振動判斷值與不平衡率容許值儲存至儲存單元11中。 The operation interface 13 is electrically connected to the processing unit 12 for the user to set the imbalance rate judgment value and the phase angle to the processing unit 12 Offset judgment value, coil temperature rise judgment value, motor vibration judgment value and unbalance rate allowable value, and imbalance rate judgment value, phase angle deviation judgment value, coil temperature rise judgment value, motor vibration judgment value and imbalance The rate tolerance value is stored in the storage unit 11.
計算單元14是電性連結於處理單元，用以將接收到的三相電流訊號S1、溫度偵測訊號S2、振動偵測訊號S3與三相電壓訊號S5分別轉換成三相電流不平衡率與三相電流相位角偏移值、馬達線圈溫升值、馬達振動值以及三相電壓不平衡率，並傳送至處理單元12。 The computing unit 14 is electrically connected to the processing unit, and is used to convert the received three-phase current signal S1, temperature detection signal S2, vibration detection signal S3, and three-phase voltage signal S5 into three-phase current imbalance rates and The three-phase current phase angle offset value, the motor coil temperature rise value, the motor vibration value, and the three-phase voltage unbalance rate are transmitted to the processing unit 12.
訊號接收單元15是電性連結於計算單元14，用以將接收到的三相電流訊號、溫度偵測訊號S2、振動偵測訊號S3與三相電壓訊號S5傳送至計算單元14。 The signal receiving unit 15 is electrically connected to the computing unit 14 and is configured to transmit the received three-phase current signal, temperature detection signal S2, vibration detection signal S3, and three-phase voltage signal S5 to the computing unit 14.
控制單元16是電性連結於處理單元12，並受處理單元12之驅動而用以控制馬達200之啟閉。 The control unit 16 is electrically connected to the processing unit 12 and is driven by the processing unit 12 to control the opening and closing of the motor 200.
三相電流偵測元件2是電性連結於訊號接收單元15與馬達200，用以偵測馬達200處於一運轉狀態時之三相電流，並據以產生三相電流訊號傳送至訊號接收單元15。 The three-phase current detecting element 2 is electrically connected to the signal receiving unit 15 and the motor 200 to detect the three-phase current when the motor 200 is in an operating state, and generates a three-phase current signal to be transmitted to the signal receiving unit 15. .
溫度偵測元件3是電性連結於訊號接收單元15，用以偵測馬達200處於運轉狀態時之馬達線圈溫升值，並據以產生溫度偵測訊號S2傳送至訊號接收單元15。 The temperature detecting element 3 is electrically connected to the signal receiving unit 15 for detecting the temperature rise of the motor coil when the motor 200 is in a running state, and generates a temperature detecting signal S2 to transmit to the signal receiving unit 15.
振動偵測元件4是電性連結於訊號接收單元15，用以偵測馬達200處於運轉狀態時之振動程度，並據以產生振動偵測訊號S3傳送至訊號接收單元15。 The vibration detecting element 4 is electrically connected to the signal receiving unit 15 to detect the degree of vibration when the motor 200 is in a running state, and generates a vibration detection signal S3 to transmit to the signal receiving unit 15.
三相電壓計5是電性連結於訊號接收單元15與馬達200，用以偵測馬達200處於一停機狀態時之三相電壓，並據以產生三相電壓訊號S5傳送至訊號接收單元15。 The three-phase voltmeter 5 is electrically connected to the signal receiving unit 15 and the motor 200 to detect the three-phase voltage when the motor 200 is in a stopped state, and generates a three-phase voltage signal S5 to transmit to the signal receiving unit 15.
請繼續參閱第二圖與第二A圖，第二圖與第二A圖係顯示本發明第一較佳實施例之步驟流程圖。如圖所示，在上述之馬達層間短路快篩系統100為基礎的情況下，本實施例之馬達層間短路快篩方法包含以下步驟：首先，步驟S101是設定不平衡率判斷值、相位角偏移判斷值、線圈溫升判斷值、馬達振動判斷值與不平衡率容許值；其中，不平衡率判斷值、相位角偏移判斷值、線圈溫升判斷值、馬達振動判斷值與不平衡率容許值可以是使用者透過操作介面13對處理單元12進行設定，並進而儲存在儲存單元11中。 Please continue to refer to the second diagram and the second A diagram. The second diagram and the second A diagram show the steps of the first preferred embodiment of the present invention. As shown in the figure, in the case of the above-mentioned motor interlayer short-circuit short-screening system 100, the method for motor interlayer short-circuit short-screening in this embodiment includes the following steps: First, step S101 is to set an imbalance rate judgment value and a phase angle deviation. Shift judgment value, coil temperature rise judgment value, motor vibration judgment value and unbalance rate allowable value; among them, imbalance rate judgment value, phase angle deviation judgment value, coil temperature rise judgment value, motor vibration judgment value and unbalance rate The allowable value may be set by the user to the processing unit 12 through the operation interface 13 and then stored in the storage unit 11.
此外，在本實施例中，不平衡率判斷值是設定為5%，相位角偏移判斷值是設定為7°，線圈溫升判斷值為3°℃，馬達振動判斷值是設定成額定工作振動值，不平衡率容許值是設定為3%。其中，額定工作振動值指得是在正常運作下的數值，可依據歷史數據或經驗來制定。 In addition, in this embodiment, the imbalance rate judgment value is set to 5%, the phase angle deviation judgment value is set to 7 °, the coil temperature rise judgment value is 3 °° C, and the motor vibration judgment value is set to rated operation. The allowable value of vibration value and imbalance rate is set to 3%. Among them, the rated working vibration value refers to the value under normal operation, which can be formulated based on historical data or experience.
步驟S102是在馬達200處於運轉狀態時，對馬達200進行偵測而產生三相電流不平衡率；其中，步驟S102主要是將三相電流偵測元件2對處於運轉狀態時之馬達200進行偵測所得之三相電流訊號，傳送至訊號接收單元15，並透過計算單元14分析三相電流訊號而產生 三相電流不平衡率，而在實務上，三相電流不平衡率的計算方式可以是(最大電流-最小電流)/最大電流，或者是(最大電流-三相平均電流)/三相平均電流。 Step S102 is to detect the motor 200 and generate a three-phase current imbalance rate when the motor 200 is in the running state. Among them, step S102 is mainly to detect the three-phase current detection element 2 on the motor 200 in the running state. The measured three-phase current signal is transmitted to the signal receiving unit 15 and generated by analyzing the three-phase current signal through the calculation unit 14 Three-phase current imbalance ratio. In practice, the calculation method of three-phase current imbalance ratio can be (maximum current-minimum current) / maximum current, or (maximum current-three-phase average current) / three-phase average current. .
步驟S103是比對三相電流不平衡率是否大於不平衡率判斷值；在本實施例中，不平衡率判斷值為5%。 Step S103 is to compare whether the unbalance rate of the three-phase current is greater than the judgment value of the unbalance rate; in this embodiment, the judgment value of the unbalance rate is 5%.
步驟S104是當三相電流不平衡率大於不平衡率判斷值時，對馬達200進行偵測而產生三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值；在本實施例中，當處理單元12比較並判斷三相電流不平衡率大於5%時，處理單元12會控制三相電流偵測元件2、溫度偵測元件3以及振動偵測元件4對馬達200進行偵測，進而使計算單元14將訊號接收單元15所接收到的三相電流訊號S1、溫度偵測訊號S2與振動偵測訊號S3分別轉換成三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值。在實務上，計算單元14可由三相電流訊號分析計算出三相電流不平衡率與三相電流相位角，且三相電流相位角為電工角。 In step S104, when the unbalance rate of the three-phase current is greater than the judgment value of the unbalance rate, the motor 200 is detected to generate a three-phase current phase angle offset value, a motor coil temperature rise value, and a motor vibration value. In this embodiment, When the processing unit 12 compares and determines that the three-phase current imbalance ratio is greater than 5%, the processing unit 12 controls the three-phase current detection element 2, the temperature detection element 3, and the vibration detection element 4 to detect the motor 200, and further, Make the calculation unit 14 convert the three-phase current signal S1, temperature detection signal S2, and vibration detection signal S3 received by the signal receiving unit 15 into three-phase current phase angle offset values, motor coil temperature rise values, and motor vibration values, respectively. . In practice, the calculation unit 14 can calculate the three-phase current unbalance rate and the three-phase current phase angle from the three-phase current signal analysis, and the three-phase current phase angle is the electrical angle.
步驟S105是比對三相電流相位角偏移值是否大於相位角偏移判斷值；在本實施例中，相位角偏移值為電工角，且相位角偏移判斷值為7°。 Step S105 is to compare whether the phase angle offset value of the three-phase current is greater than the phase angle offset judgment value. In this embodiment, the phase angle offset value is an electrician angle, and the phase angle offset judgment value is 7 °.
步驟S106是當三相電流相位角偏移值大於相位角偏移判斷值時，比對馬達線圈溫升值是否大於線圈溫升判斷值；在本實施例中，當三相電流相位角偏移值大於相位角偏移判斷值時，處理單元12會進一步比 對馬達線圈溫升值是否大於線圈溫升判斷值，此外，線圈溫升判斷值為3℃，意即處理單元12實際上是比對判斷線圈溫度減掉馬達200周圍的環境溫度所計算出的馬達線圈溫升值是否大於線圈溫升判斷值所設定之3℃。 Step S106 is to compare whether the temperature rise value of the motor coil is greater than the coil temperature rise judgment value when the phase angle deviation value of the three-phase current is greater than the phase angle deviation judgment value. In this embodiment, when the phase angle deviation value of the three-phase current is greater than When it is larger than the phase angle offset judgment value, the processing unit 12 will further compare Whether the motor coil temperature rise value is greater than the coil temperature rise judgment value. In addition, the coil temperature rise judgment value is 3 ° C, which means that the processing unit 12 is actually a motor calculated by comparing the judgment of the coil temperature minus the ambient temperature around the motor 200. Whether the coil temperature rise value is greater than 3 ° C set by the coil temperature rise judgment value.
步驟S107是當馬達線圈溫升值大於線圈溫升判斷值時，比對馬達振動值是否大於馬達振動判斷值；在本實施例中，當馬達線圈溫升值大於線圈溫升判斷值時，處理單元12會進一步比對馬達振動值是否大於馬達振動判斷值，在本實施例中，馬達振動值與馬達振動判斷值皆以mm/s為單位進行比較。在實務上，馬達振動判斷值可以依據ISO-10816之標準進行設定，以小型馬達為例，小型馬達在振動值超過4.5mm/s後為Unsatisfactory的範圍，因此馬達振動判斷值可以定為4.5mm/s，但不限於此，馬達振動判斷值還可依據實際狀況或歷史數據進行設定。 In step S107, when the temperature rise value of the motor coil is greater than the judgement value of the coil temperature rise, whether the motor vibration value is greater than the judgement value of the motor vibration; in this embodiment, when the temperature rise value of the motor coil is greater than the judgement value of the coil temperature rise, the processing unit 12 Whether the motor vibration value is greater than the motor vibration judgment value will be further compared. In this embodiment, the motor vibration value and the motor vibration judgment value are compared in a unit of mm / s. In practice, the motor vibration judgment value can be set according to the ISO-10816 standard. Taking a small motor as an example, a small motor will be in the Unsatisfactory range after the vibration value exceeds 4.5mm / s, so the motor vibration judgment value can be set to 4.5mm. / s, but not limited to this, the motor vibration judgment value can also be set according to actual conditions or historical data.
步驟S108是當馬達線圈溫升值大於線圈溫升判斷值時，停止馬達之運作而使馬達處於停機狀態；在本實施例中，在確認三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值分別大於相位角偏移判斷值、線圈溫升判斷值以及馬達振動判斷值後，處理單元12會驅使控制單元16發送一控制訊號S4去控制馬達200停止運作而處於停機狀態。其中，上述之步驟S105、步驟S106與步驟S107之實質順序可以是不分先後的，意即可以任意排列順序，只要最後結果是三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值分別大於相位角 偏移判斷值、線圈溫升判斷值以及馬達振動判斷值，即可接續至步驟S108。 In step S108, when the temperature rise value of the motor coil is greater than the judgment value of the coil temperature rise, the operation of the motor is stopped and the motor is stopped. In this embodiment, the three-phase current phase angle offset value, the motor coil temperature rise value, and the motor are confirmed. After the vibration values are greater than the phase angle offset judgment value, the coil temperature rise judgment value, and the motor vibration judgment value, the processing unit 12 will drive the control unit 16 to send a control signal S4 to control the motor 200 to stop operation and be in a stopped state. Among them, the actual order of the above steps S105, S106, and S107 may be in no particular order, which means that they can be arranged in any order, as long as the final result is the three-phase current phase angle offset value, the motor coil temperature rise value, and the motor vibration value. Greater than the phase angle The offset judgment value, the coil temperature rise judgment value, and the motor vibration judgment value can then proceed to step S108.
步驟S109是利用三相電壓計偵測馬達200之三相電壓不平衡率，並比對三相電壓不平衡率是否在不平衡率容許值以內；其中，在馬達200處於停機狀態時，三相電壓計5便能偵測馬達200之三相電壓不平衡率。 Step S109 is to use a three-phase voltmeter to detect the three-phase voltage unbalance rate of the motor 200 and compare whether the three-phase voltage unbalance rate is within the allowable value of the unbalance rate. Among them, when the motor 200 is stopped, the three-phase voltage The voltmeter 5 can detect the three-phase voltage unbalance rate of the motor 200.
步驟S110是當三相電壓不平衡率在不平衡率容許值以內時，判斷馬達發生層間短路狀況；其中，當處理單元12確認三相電壓不平衡率在不平衡率容許值以內後，便判斷馬達200發生層間短路狀況。 In step S110, when the unbalance rate of the three-phase voltage is within the allowable value of the unbalance rate, it is judged that an interlayer short circuit condition occurs in the motor. Among them, when the processing unit 12 confirms that the unbalance rate of the three-phase voltage is within the allowable value of the unbalance rate, it judges The motor 200 has an inter-layer short-circuit condition.
如上所述，由於本發明是在馬達200處於運轉狀態時，先利用三相電流偵測元件2進行偵測，並比較三相電流不平衡率是否大於不平衡率判斷值，進而判斷是否有可能發生層間短路的情況，當三相電流不平衡率大於不平衡率判斷值時，表示馬達200有可能發生層間短路，此時再進一步確認三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值是否分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值，進而判斷更有可能發生層間短路狀況，最後再透過馬達200停機後，量測馬達200在未運轉時的三相電壓不平衡率是否在不平衡率容許值以內，當確認三相電壓不平衡率在不平衡率容許值以內時，即可排除電力供應源300之電力不穩定的可能，進而確認為馬達200發生層間短路狀況。 As described above, since the present invention uses the three-phase current detection element 2 to detect when the motor 200 is in the running state, and compares whether the three-phase current imbalance rate is greater than the judgment value of the imbalance rate, and then determines whether it is possible In the case of an inter-layer short circuit, when the three-phase current imbalance rate is greater than the judgment value of the unbalance rate, it indicates that there may be an inter-layer short circuit in the motor 200. At this time, the three-phase current phase angle offset value, the motor coil temperature rise value, and the motor are further confirmed. Whether the vibration value is greater than the phase angle offset judgment value, the coil temperature rise judgment value, and the motor vibration judgment value, and then it is judged that the interlayer short circuit is more likely to occur. Finally, after the motor 200 is stopped, the motor 200 is measured when it is not running. Whether the three-phase voltage imbalance rate is within the allowable value of the imbalance rate. When it is confirmed that the three-phase voltage imbalance rate is within the allowable value of the imbalance rate, the possibility that the power of the power supply source 300 is unstable can be ruled out, and then confirmed as a motor. 200 An inter-layer short-circuit condition occurred.
請參閱第三圖，第三圖係顯示本發明第二較佳實施例所提供之馬達層間短路快篩系統之系統示意 圖。如圖所示，一種馬達層間短路快篩系統100a包含一分析模組1a、一三相電流偵測元件2a、一溫度偵測元件3a、一振動偵測元件4a以及一三相電壓計5a。其中，馬達層間短路快篩系統100a是在一馬達200a接收一電力供應源300a所提供之電力而處於運轉狀態時，用以快篩馬達200a是否發生層間短路狀況。 Please refer to the third diagram. The third diagram is a schematic diagram showing the system of the motor interlayer short-circuit short-screening system provided by the second preferred embodiment of the present invention. Illustration. As shown in the figure, a motor interlayer short-circuit short-screening system 100a includes an analysis module 1a, a three-phase current detection element 2a, a temperature detection element 3a, a vibration detection element 4a, and a three-phase voltmeter 5a. Among them, the motor inter-layer short-circuit short-screening system 100a is used to quickly screen the motor 200a if an inter-layer short-circuit occurs when a motor 200a receives power from a power supply source 300a and is in an operating state.
承上所述，馬達層間短路快篩系統100a與上述第一較佳實施例之馬達層間短路快篩系統100相似，其差異主要在於馬達層間短路快篩系統100a以分析模組1a取代上述之分析模組1，且三相電壓計5a是電性連結於馬達200a與電力供應源300a間之電路。其中，分析模組1a包含一儲存單元11a、一處理單元12a、一操作介面13a、一計算單元14a以及一訊號接收單元15a，但分析模組1a相較於分析模組1未包含控制單元16。 As mentioned above, the motor inter-layer short-circuit short-screening system 100a is similar to the motor inter-layer short-circuit short-screening system 100 in the first preferred embodiment described above. The difference is mainly that the motor inter-layer short-circuit short-screening system 100a is replaced by the analysis module 1a. Module 1, and the three-phase voltmeter 5a is a circuit electrically connected between the motor 200a and the power supply source 300a. The analysis module 1a includes a storage unit 11a, a processing unit 12a, an operation interface 13a, a calculation unit 14a, and a signal receiving unit 15a. However, compared with the analysis module 1, the analysis module 1a does not include a control unit 16 .
請繼續參閱第四圖與第四A圖，第四圖與第四A圖係顯示本發明第二較佳實施例之步驟流程圖。如圖所示，在上述之馬達層間短路快篩系統100a為基礎的情況下，由於本實施例之馬達層間短路快篩方法相較於上述第一較佳實施例之馬達層間短路快篩方法之差異主要在於步驟S208與步驟S209相較於步驟S108與步驟S109有所差異，故僅針對步驟S208與步驟S209進行說明。 Please continue to refer to FIG. 4 and FIG. 4A, which are flowcharts showing the steps of the second preferred embodiment of the present invention. As shown in the figure, in the case of the above-mentioned motor interlayer short-circuit short-screening system 100a, as the motor interlayer short-circuit short-screening method of this embodiment is compared with the motor interlayer short-circuit short-screening method of the first preferred embodiment described above. The difference mainly lies in that step S208 and step S209 are different from step S108 and step S109, so only steps S208 and S209 are described.
步驟S208是當馬達線圈溫升值大於線圈溫升判斷值時，將三相電壓計5a並聯於電力供應源300a與馬達200a間之電路。而步驟S209是利用三相電壓計5a 偵測電力供應源300a與馬達200a間之電路的三相電壓不平衡率，並比對三相電壓不平衡率是否在不平衡率容許值以內；其中，本實施例是在馬達200a仍處於運轉狀態下，透過偵測電力供應源300a與馬達200a間之電路來獲得三相電壓不平衡率，同樣可以判斷是否馬達200a之三相電流不平衡率、三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值分別大於不平衡率判斷值、相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值的原因是否與電力供應源300a之供電有關，當確認三相電壓不平衡率在不平衡率容許值以內後，即可排除電力供應源300a之供電不穩定的情況，進而判斷馬達200a確實發生層間短路狀況。 In step S208, when the temperature rise value of the motor coil is greater than the judgment value of the coil temperature rise, the three-phase voltmeter 5a is connected in parallel to the circuit between the power supply source 300a and the motor 200a. In step S209, a three-phase voltmeter 5a is used. Detect the three-phase voltage unbalance rate of the circuit between the power supply source 300a and the motor 200a, and compare whether the three-phase voltage unbalance rate is within the allowable value of the unbalance rate; of this embodiment, the motor 200a is still running In the state, the three-phase voltage unbalance rate is obtained by detecting the circuit between the power supply source 300a and the motor 200a. It is also possible to determine whether the three-phase current unbalance rate of the motor 200a, the three-phase current phase angle offset value, and the motor coil Whether the temperature rise value and the motor vibration value are greater than the imbalance rate judgment value, the phase angle deviation judgment value, the coil temperature rise judgment value, and the motor vibration judgment value are related to the power supply of the power supply source 300a. When the three-phase voltage imbalance is confirmed, After the rate is within the allowable value of the imbalance rate, the situation that the power supply of the power supply source 300a is unstable can be ruled out, and then it is judged that the inter-layer short circuit condition does occur in the motor 200a.
綜上所述，相較於先前技術必須在馬達停機的狀態下才能偵測是否發生層間短路，進而影響到產能或增加人力的成本，本發明在馬達處於運轉狀態下，透過三相電流不平衡率與不平衡率判斷值之比較，可以初步判斷馬達是否有發生層間短路狀況，接著更比較三相電流相位角偏移值、馬達線圈溫升值以及馬達振動值是否分別大於相位角偏移判斷值、線圈溫升判斷值與馬達振動判斷值，進而增加判斷發生層間短路狀況的可能性，最後再透過為電力供應源所供應之電力是否有問題來再次加強發生層間短路狀況的可能性，藉此，本發明可以在馬達不停機的狀態下快篩出是否發生層間短路狀況，有效的減少馬達停機的時間，增加使用上的便利性。 To sum up, compared with the prior art, it is necessary to detect whether an inter-layer short circuit occurs when the motor is stopped, which affects the production capacity or increases the cost of manpower. When the motor is in the running state, the three-phase current is unbalanced. The comparison between the judgment rate and the imbalance rate judgment value can be used to determine whether the motor has an interlayer short circuit condition. Then, the three-phase current phase angle deviation value, the motor coil temperature rise value, and the motor vibration value are greater than the phase angle deviation judgment value. The coil temperature rise judgement value and motor vibration judgement value increase the possibility of judging the occurrence of inter-layer short-circuit conditions. Finally, the possibility of inter-layer short-circuit conditions is again strengthened through whether there is a problem with the power supplied to the power supply source. The invention can quickly screen out whether there is an inter-layer short circuit condition when the motor is not stopped, effectively reduce the time for the motor to stop, and increase convenience in use.
上述僅為本發明較佳之實施例而已，並不 對本發明進行任何限制。任何所屬技術領域的技術人員，在不脫離本發明的技術手段的範圍內，對本發明揭露的技術手段和技術內容做任何形式的等同替換或修改等變動，均屬未脫離本發明的技術手段的內容，仍屬於本發明的保護範圍之內。 The above are only preferred embodiments of the present invention, and are not The invention is not limited in any way. Any person skilled in the art, without departing from the technical means of the present invention, make any equivalent replacement or modification to the technical means and technical contents disclosed in the present invention without departing from the technical means of the present invention. The content still falls within the protection scope of the present invention.
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