TWI676335B - Rotor device and reluctance motor having the rotor device - Google Patents
Rotor device and reluctance motor having the rotor device Download PDFInfo
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- TWI676335B TWI676335B TW107137614A TW107137614A TWI676335B TW I676335 B TWI676335 B TW I676335B TW 107137614 A TW107137614 A TW 107137614A TW 107137614 A TW107137614 A TW 107137614A TW I676335 B TWI676335 B TW I676335B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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Abstract
一種轉子裝置，包含一本體單元，及複數障壁單元。該本體單元包括一轉子鐵芯，及一穿設於該轉子鐵芯上的主軸，該複數障壁單元平均環繞且間隔設置於該轉子鐵芯上，每一障壁單元包括至少二間隔設置且貫穿該轉子鐵芯之磁通障壁槽，及至少一位於相鄰兩磁通障壁槽間的磁通通道，其中，最靠近該轉子鐵芯之圓心的磁通障壁槽之中間厚度大於兩端的厚度。 A rotor device includes a body unit and a plurality of barrier units. The body unit includes a rotor core and a main shaft passing through the rotor core. The plurality of barrier units are evenly spaced and spaced apart from each other on the rotor core. Each barrier unit includes at least two spaced spaces and runs through the rotor core. A magnetic flux barrier groove of the rotor core and at least one magnetic flux channel between two adjacent magnetic flux barrier grooves, wherein the middle thickness of the magnetic flux barrier groove closest to the center of the rotor core is greater than the thickness at both ends.
Description
本發明是有關一種轉子裝置，特別是指一種轉子裝置及具有該轉子裝置的磁阻馬達。 The invention relates to a rotor device, in particular to a rotor device and a reluctance motor having the rotor device.
隨著自動化生產設備的需求日益趨增，電動機作為生產設備之主要驅動裝置扮演著關鍵性的角色，在數種電動機架構中，最常見的為感應馬達，而永磁馬達與磁阻馬達因具有結構簡單及效率高等優點，故而逐漸受到重視，也都逐步朝向提高能源效率發展。 With the increasing demand for automated production equipment, electric motors play a key role as the main driving device of production equipment. Among several motor architectures, the most common are induction motors, and permanent magnet motors and reluctance motors have The advantages of simple structure and high efficiency have gradually attracted attention, and they are gradually moving towards improving energy efficiency.
由於永磁馬達之轉子為磁性材料，所以轉子無感應電流，雖然效率較高，惟，使用稀土之良好的磁性材料產量稀少且價格昂貴，使得永磁馬達不易為工業界大量使用。 Because the rotor of the permanent magnet motor is a magnetic material, the rotor has no induced current. Although the efficiency is high, the good magnetic material using rare earth is scarce in output and expensive, making it difficult for the industrial industry to use it in large quantities.
反觀磁阻馬達有別於採用勞倫茲力作動的感應馬達及永磁馬達，磁阻馬達是利用磁阻力來運轉，也就是利用磁力線在空間中形成一封閉迴路時，磁力線會選擇走磁阻最低的路徑，所以當轉子置於定子磁場時，磁力線會驅使轉子移動至其磁阻為最低的位置，透過轉子d-q軸之磁阻產生最大與最小之磁阻差，來產生磁阻轉矩，也因轉子與定子之旋轉磁場同步旋轉，因此沒有感應電流，也無二次銅損，所以能量轉換效率高，在油電雙漲以及溫室效應帶來之環境議題，節能成為全球迫切的課題，因此磁阻馬達取代工業用感應馬達與稀土類永磁馬達的應用。 In contrast, reluctance motors are different from induction motors and permanent magnet motors that use Lorentz force. Reluctance motors use magnetic resistance to operate, that is, when magnetic lines form a closed loop in the space, the magnetic lines of force will choose to travel magnetically. The path of the lowest resistance, so when the rotor is placed in the stator magnetic field, the magnetic field lines will drive the rotor to the position where the magnetic resistance is the lowest. The maximum and minimum magnetic resistance difference is generated through the magnetic resistance of the rotor dq axis to generate the reluctance torque. Because the rotating magnetic field of the rotor and stator rotates synchronously, there is no induced current and no secondary copper loss. Therefore, the energy conversion efficiency is high. In the environmental issues caused by the double rise of oil and electricity and the greenhouse effect, energy conservation has become an urgent issue worldwide. Therefore, the reluctance motor replaces the application of industrial induction motor and rare earth permanent magnet motor.
現有技術的磁阻馬達為了提高轉矩利用 率，需使d軸電感越大，q軸電感越小，為了增加磁阻差，需有效阻隔q軸磁通，以利降低q軸電感，然而，轉子中之障壁設置的數量較少或障壁的空間較小，都將使障壁的磁阻變小，進而降低轉子的轉矩；若增加障壁的數量或空間，則會導致轉子的結構強度變差，使轉子於高速轉動時容易變形，而需加以改善。 In order to improve the torque utilization of the prior art reluctance motor It is necessary to make the d-axis inductance larger and the q-axis inductance smaller. In order to increase the magnetic resistance difference, it is necessary to effectively block the q-axis magnetic flux in order to reduce the q-axis inductance. However, the number of barriers in the rotor is small or the barriers are provided. The smaller the space, the smaller the magnetic resistance of the barrier, and thus the torque of the rotor. If the number or space of the barrier is increased, the structural strength of the rotor will be deteriorated, and the rotor will be easily deformed at high speeds. Need to be improved.
上述缺點都顯現習知磁阻馬達在使用上所衍生的種種問題，長久下來，常常導致物件的使用效率與結構強度無法提升等缺失，因此現有技術確實有待提出更佳解決方案之必要性。 The above-mentioned shortcomings all show various problems arising from the use of conventional reluctance motors. Over time, they often lead to the lack of improvement in the use efficiency and structural strength of objects. Therefore, the prior art does need to propose a better solution.
有鑑於此，本發明之目的，是提供一種轉子裝置，包含一本體單元，及四個障壁單元。 In view of this, an object of the present invention is to provide a rotor device including a body unit and four barrier units.
該本體單元包括一轉子鐵芯，及一穿設於該轉子鐵芯上的主軸，該四障壁單元平均環繞且間隔設置於該轉子鐵芯上，每一障壁單元包括至少二間隔設置且貫穿該轉子鐵芯之磁通障壁槽，及至少一位於相鄰兩磁通障壁槽間的磁通通道，其中，最靠近該轉子鐵芯之圓心的磁通障壁槽之中間厚度大於兩端的厚度。 The body unit includes a rotor core and a main shaft passing through the rotor core. The four barrier units are evenly spaced and spaced apart from each other on the rotor core. Each barrier unit includes at least two spaced spaces and runs through the core. A magnetic flux barrier groove of the rotor core and at least one magnetic flux channel between two adjacent magnetic flux barrier grooves, wherein the middle thickness of the magnetic flux barrier groove closest to the center of the rotor core is greater than the thickness at both ends.
本發明的另一技術手段，是在於上述之障壁單元定義有一位於相鄰兩障壁單元間之d軸，及一自該磁通障壁槽之中心位置穿過的q軸，自該轉子鐵芯之圓心並以與最靠近圓心之四個磁通障壁槽的中心位置為切點所形成一相切的外切圓直徑為Rd1，該轉子鐵芯的直徑為Rd2，Rd1、Rd2滿足0.35≦Rd1/Rd2≦0.55關係式。 Another technical means of the present invention is that the above-mentioned barrier unit defines a d-axis located between two adjacent barrier units, and a q-axis passing through the center position of the magnetic flux barrier groove, from the rotor core. The diameter of the circumscribed circle formed by the center of the circle and the center of the four magnetic flux barrier grooves closest to the center of the circle is Rd1. The diameter of the rotor core is Rd2, and Rd1 and Rd2 satisfy 0.35 ≦ Rd1 / Rd2. ≦ 0.55 relation.
本發明的又一技術手段，是在於上述之磁通障壁槽的數量為2~5個，當該磁通障壁槽的數量為2個，定義該二磁通障壁槽的中間部位厚度的總和為F’，相鄰兩磁通障壁槽間的磁通通道距離為I’，I’、F’滿足 0.8≦I’/F’≦1.15關係式；當該磁通障壁槽的數量為3~5個，定義所有磁通障壁槽的中間部位厚度的總和為F，相鄰兩磁通障壁槽間的所有磁通通道距離的總和為I，I、F滿足0.8≦I/F≦1.15關係式。 Another technical means of the present invention is that the number of the magnetic flux barrier rib grooves is 2 to 5, and when the number of the magnetic flux barrier rib grooves is two, the total thickness of the middle portion of the two magnetic flux barrier rib grooves is defined as F ', the distance between the magnetic flux channels between two adjacent magnetic flux barrier slots is I', and I 'and F' satisfy 0.8 ≦ I '/ F' ≦ 1.15; when the number of the magnetic flux barrier ribs is 3 ~ 5, the total thickness of the middle part of all magnetic flux barrier ribs is defined as F, and the distance between two adjacent magnetic flux barrier ribs is The sum of the distances of all magnetic flux channels is I, and I and F satisfy the relationship of 0.8 ≦ I / F ≦ 1.15.
本發明的再一技術手段，是在於上述之最靠近該轉子鐵芯之圓心的磁通障壁槽之中間厚度大於最遠離該轉子鐵芯之圓心的磁通障壁槽之中間厚度，且每一位於兩磁通障壁槽間之磁通通道的間距相同。 Another technical means of the present invention is that the intermediate thickness of the magnetic flux barrier rib grooves closest to the center of the rotor core is greater than the intermediate thickness of the magnetic flux barrier rib grooves that are farthest from the center of the rotor core. The distance between the magnetic flux channels between the two magnetic flux barrier walls is the same.
本發明的另一技術手段，是在於上述之每一磁通障壁槽之兩側末端的形狀概呈圓弧形，且每一障壁單元更包括一連接該複數磁通障壁槽且位於q軸上之連接肋，用以增加該轉子鐵芯之結構強度。 Another technical means of the present invention is that the shapes of the two ends of each of the magnetic flux barrier rib grooves described above are substantially arc-shaped, and each barrier element further includes a plurality of magnetic flux barrier rib grooves which are located on the q axis. The connecting rib is used to increase the structural strength of the rotor core.
本發明的又一技術手段，是在於上述轉子鐵芯之直徑大於60mm時，該磁通障壁槽之兩側末端與該轉子鐵芯之外緣的寬度不小於0.3mm。 In another technical means of the present invention, when the diameter of the rotor core is greater than 60 mm, the width of the two ends of the magnetic flux barrier groove and the outer edge of the rotor core is not less than 0.3 mm.
本發明的再一技術手段，是在於上述轉子鐵芯之直徑大於100mm時，該磁通障壁槽之兩側末端與該轉子鐵芯之外緣的寬度不小於0.4mm。 According to still another technical means of the present invention, when the diameter of the rotor core is greater than 100 mm, the width of the ends of both sides of the magnetic flux barrier groove and the outer edge of the rotor core is not less than 0.4 mm.
本發明的另一技術手段，是在於上述轉子鐵芯之直徑大於130mm時，該磁通障壁槽之兩側末端與該轉子鐵芯之外緣的寬度不小於0.5mm。 Another technical means of the present invention is that when the diameter of the rotor core is greater than 130 mm, the width of the ends of both sides of the magnetic flux barrier groove and the outer edge of the rotor core is not less than 0.5 mm.
本發明的又一技術手段，是在於上述轉子鐵芯之直徑大於160mm時，該磁通障壁槽之兩側末端與該轉子鐵芯之外緣的寬度不小於0.6mm。 In another technical means of the present invention, when the diameter of the rotor core is greater than 160 mm, the width at the ends of both sides of the magnetic flux barrier groove and the outer edge of the rotor core is not less than 0.6 mm.
本發明的再一技術手段，是在於提供一種磁阻馬達，包括一具有一定子鐵芯及纏繞於該定子鐵芯上之分佈繞組的定子裝置，及一裝設於該定子裝置內側之轉子裝置。 Another technical means of the present invention is to provide a reluctance motor, which includes a stator device having a stator core and a distributed winding wound on the stator core, and a rotor device installed inside the stator device. .
本發明之有益功效在於，藉由最靠近該轉 子鐵芯之圓心的磁通障壁槽之中間厚度大於兩端的厚度，且最靠近該轉子鐵芯之圓心的磁通障壁槽之中間厚度大於最遠離該轉子鐵芯之圓心的磁通障壁槽之中間厚度，以降低馬達轉矩漣波，進而抑制震動噪音，此外縮短該磁通障壁槽之兩側末端與該轉子鐵芯之外緣的寬度，可藉此得到最大之馬達特性，同時不會提高馬達的轉矩漣波，使馬達的效率達到最高水平，進而達到節省成本且可大量生產之目的。 A beneficial effect of the present invention is that, by closest to the turn The intermediate thickness of the magnetic flux barrier groove of the core of the sub-core is greater than the thickness at both ends, and the intermediate thickness of the magnetic flux barrier groove closest to the center of the rotor core is greater than that of the magnetic flux barrier groove farthest from the center of the rotor core. Middle thickness to reduce the torque ripple of the motor, thereby suppressing vibration noise, and shortening the width of the ends of the two sides of the magnetic flux barrier groove and the outer edge of the rotor core, thereby obtaining the maximum motor characteristics without Increase the torque ripple of the motor, so that the efficiency of the motor reaches the highest level, thereby achieving the purpose of cost savings and mass production.
21‧‧‧直徑 21‧‧‧ diameter
22‧‧‧直徑 22‧‧‧ diameter
23‧‧‧厚度 23‧‧‧ thickness
24‧‧‧距離 24‧‧‧ Distance
3‧‧‧本體單元 3‧‧‧Body unit
31‧‧‧轉子鐵芯 31‧‧‧rotor core
32‧‧‧主軸 32‧‧‧ Spindle
5‧‧‧障壁單元 5‧‧‧Bundle Unit
51‧‧‧磁通障壁槽 51‧‧‧ magnetic flux barrier
52‧‧‧磁通通道 52‧‧‧ magnetic flux channel
53‧‧‧連接肋 53‧‧‧ connecting rib
7‧‧‧定子裝置 7‧‧‧ Stator device
71‧‧‧定子鐵芯 71‧‧‧Stator core
72‧‧‧分佈繞組 72‧‧‧ distributed winding
圖1是一前視示意圖，說明本發明轉子裝置及具有該轉子裝置的磁阻馬達之較佳實施例；圖2是局部放大圖，說明本較佳實施例中一障壁單元的設置態樣；圖3是一前視示意圖，說明本較佳實施例中一定子裝置與一轉子裝置的結合態樣；圖4是一示意圖，說明本較佳實施例中外切圓的直徑與轉子鐵芯的直徑對轉矩的模擬結果；圖5是一示意圖，說明本較佳實施例中外切圓的直徑與轉子鐵芯的直徑對轉矩漣波的模擬結果；圖6是一示意圖，說明本較佳實施例中相鄰兩磁通障壁槽間的所有磁通通道距離的總和與所有磁通障壁槽的中間部位厚度的總和對轉矩的模擬結果；及圖7是一示意圖，說明本較佳實施例中相鄰兩磁通障壁槽間的所有磁通通道距離的總和與所有磁通障壁槽的中間部位厚度的總和對轉矩漣波的模擬結果。 FIG. 1 is a schematic front view illustrating a preferred embodiment of a rotor device of the present invention and a reluctance motor having the same; FIG. 2 is a partially enlarged view illustrating the arrangement of a barrier unit in the preferred embodiment; Fig. 3 is a schematic front view illustrating the combination of a certain sub-device and a rotor device in the preferred embodiment; Fig. 4 is a schematic view illustrating the diameter of the circumscribed circle and the diameter of the rotor core in the preferred embodiment Simulation results of torque; Figure 5 is a schematic diagram illustrating the simulation results of the torque ripple on the diameter of the circumscribed circle and the diameter of the rotor core in the preferred embodiment; Figure 6 is a schematic diagram illustrating the preferred implementation In the example, the sum of the distances of all the magnetic flux channels between two adjacent magnetic flux barrier grooves and the sum of the thicknesses of the intermediate portions of all magnetic flux barrier grooves are used to simulate the torque; and FIG. 7 is a schematic diagram illustrating the preferred embodiment. The simulation result of the torque ripple by the sum of the distances of all the magnetic flux channels between two adjacent magnetic flux barrier rib grooves and the sum of the thicknesses of the middle portions of all magnetic flux barrier rib grooves.
有關本發明之相關申請專利特色與技術內容，在以下配合參考圖式之較佳實施例的詳細說明中，將 可清楚的呈現。 Regarding the features and technical contents of the related patent applications of the present invention, in the following detailed description of the preferred embodiments with reference to the drawings, Can be clearly presented.
參閱圖1、2，為本發明轉子裝置及具有該轉子裝置的磁阻馬達之較佳實施例，該轉子裝置包含一本體單元3，及複數障壁單元5。 Referring to FIGS. 1 and 2, there is shown a preferred embodiment of a rotor device and a reluctance motor having the same. The rotor device includes a body unit 3 and a plurality of barrier units 5.
在此，先說明的是，磁阻馬達轉矩產生的方式主要透過該轉子裝置d-q軸之磁阻差來產生磁阻轉矩，於此，定義該障壁單元5有一位於相鄰兩障壁單元5間之d軸，及一自該磁通障壁槽51之中心位置穿過的q軸，進一步地，d軸為該轉子裝置之凸極磁場延伸的方向，q軸為連接相鄰凸極與凸極間磁場延伸的方向。磁阻馬達之轉矩方程式在同步旋轉座標下可表示為：
上述方程式中，T為磁阻馬達的電磁轉矩，P為轉子極數，Ld、Lq為d、q軸電感，id、iq為在空間向量的定子電流在d、q軸方向上的分量。由公式可知，磁阻馬達具有依賴電感差值(Ld-Lq)最大之特性。提高d軸電感或者降低q軸電感，皆可提高電機之輸出轉矩。因此，電感差為影響磁阻馬達之運轉性能最主要的參數之一。 In the above equation, T is the electromagnetic torque of the reluctance motor, P is the number of rotor poles, Ld and Lq are the d and q axis inductances, and id and iq are the components of the stator current in the space vector in the d and q axis directions. It can be known from the formula that the reluctance motor has the characteristic of relying on the maximum inductance difference (Ld-Lq). Increasing the d-axis inductance or reducing the q-axis inductance can increase the output torque of the motor. Therefore, the inductance difference is one of the most important parameters that affect the operating performance of the reluctance motor.
該本體單元3包括一轉子鐵芯31，及一穿設於該轉子鐵芯31上的主軸32。該轉子鐵芯31是由鋼板、矽鋼片、軟磁複合材料(Soft magnetic composites，SMC)或其它導磁材料，透過複數個導磁矽鋼片堆疊銲接固定或自動鉚合等壓配合元件而成，或者為一體成型的構件。藉此，提供一種能快速達到轉矩最大利用與較低的轉矩漣波之方式，以改善磁阻馬達效率的方法。 The main body unit 3 includes a rotor core 31 and a main shaft 32 passing through the rotor core 31. The rotor core 31 is made of steel plates, silicon steel sheets, soft magnetic composites (SMC) or other magnetically conductive materials, and is stacked, fixed or automatically riveted by a plurality of magnetically permeable silicon steel sheets, or is automatically riveted, such as press-fit components, or It is a one-piece component. Therefore, a method for quickly achieving the maximum torque utilization and lower torque ripple is provided to improve the efficiency of the reluctance motor.
該複數障壁單元5平均環繞且間隔設置於該轉子鐵芯31上，每一障壁單元5包括至少二間隔設置且貫穿該轉子鐵芯31之磁通障壁槽51，及至少一位於相鄰 兩磁通障壁槽51間的磁通通道52。 The plurality of barrier units 5 are evenly spaced and spaced apart from each other on the rotor core 31. Each barrier unit 5 includes at least two magnetic flux barrier grooves 51 spaced apart and penetrating through the rotor core 31, and at least one is located adjacent to each other. A magnetic flux channel 52 between the two magnetic flux barrier grooves 51.
其中，最靠近該轉子鐵芯31之圓心的磁通障壁槽51之中間厚度23大於兩端的厚度，也就是最靠近該轉子鐵芯31之圓心的磁通障壁槽51從q軸穿過該磁通障壁槽51之中心位置到該磁通障壁槽51的左右兩末端，呈現越來越小之態樣，用以降低馬達轉矩漣波，藉此得以抑制作動之震動噪音。 Among them, the middle thickness 23 of the magnetic flux barrier groove 51 closest to the center of the rotor core 31 is greater than the thickness at both ends, that is, the magnetic flux barrier groove 51 closest to the center of the rotor core 31 passes through the magnetic field from the q axis. The central position of the barrier rib groove 51 to the left and right ends of the magnetic barrier rib groove 51 appears smaller and smaller to reduce the motor torque ripple, thereby suppressing the vibration noise of the operation.
進一步地，最靠近該轉子鐵芯31之圓心的磁通障壁槽51之中間厚度23大於最遠離該轉子鐵芯31之圓心的磁通障壁槽51之中間厚度23，而當有複數個磁通障壁槽51時，其為由厚至薄的漸進式厚度設計，透過此設計可降低馬達轉矩漣波，以抑制震動噪音，且每一位於兩磁通障壁槽51間之磁通通道52的間距相同。 Further, the intermediate thickness 23 of the magnetic flux barrier groove 51 closest to the center of the rotor core 31 is greater than the intermediate thickness 23 of the magnetic flux barrier groove 51 closest to the center of the rotor core 31, and when there are multiple magnetic fluxes In the case of the barrier rib 51, it is a progressive thickness design from thick to thin. Through this design, the motor torque ripple can be reduced to suppress vibration noise. Each of the magnetic flux channels 52 located between the two magnetic flux barrier ribs 51 The spacing is the same.
再者，每一磁通障壁槽51之兩側末端的形狀概呈圓弧形，除了可提升製造品質外，更可延長模具壽命，進而達到大量生產之目的。 In addition, the shapes of the two ends of each magnetic flux barrier groove 51 are arc-shaped, in addition to improving the manufacturing quality, it can also extend the life of the mold, thereby achieving the purpose of mass production.
於此，定義自該轉子鐵芯31之圓心並以與最靠近圓心之四個磁通障壁槽51的中心位置為切點所形成一相切的外切圓直徑21為Rd1，該轉子鐵芯的直徑22為Rd2，在本較佳實施例中，該障壁單元5的數量為四個，Rd1、Rd2滿足0.35≦Rd1/Rd2≦0.55關係式。 Here, the circumscribed circle diameter 21 defined from the center of the rotor core 31 and tangent to the center position of the four magnetic flux barrier rib grooves 51 closest to the center of the circle is Rd1. The diameter 22 is Rd2. In the preferred embodiment, the number of the barrier units 5 is four, and Rd1 and Rd2 satisfy the relationship of 0.35 ≦ Rd1 / Rd2 ≦ 0.55.
進一步地，該磁通障壁槽51的數量為2~5個，如圖1~3中所示，該磁通障壁槽51的數量為3個，而該磁通通道52為2個。當該磁通障壁槽51的數量為2個而該磁通通道52為1個時，定義該二磁通障壁槽51的中間部位厚度23的總和為F’，相鄰兩磁通障壁槽51間的磁通通道52距離24為I’，滿足0.8≦I’/F’≦1.15關係式，於當該磁通障壁槽51的數量為3個，定義所有磁通障壁槽51的中間部位厚度23的總和為F，相鄰兩磁通障壁槽51 間的所有磁通通道52距離24的總和為I，I、F亦滿足0.8≦I/F≦1.15關係式。 Further, the number of the magnetic flux barrier rib grooves 51 is two to five, as shown in FIGS. 1 to 3, the number of the magnetic flux barrier rib grooves 51 is three, and the number of the magnetic flux channels 52 is two. When the number of the magnetic flux barrier rib grooves 51 is two and the magnetic flux channel 52 is one, the sum of the thicknesses 23 of the middle portions of the two magnetic flux barrier rib grooves 51 is defined as F ′, and two adjacent magnetic flux barrier ribs 51 The distance 24 between the magnetic flux channels 52 is I ′, which satisfies the relationship of 0.8 ≦ I ′ / F ′ ≦ 1.15. When the number of the magnetic flux barrier ribs 51 is three, the thickness of the middle portion of all magnetic flux barrier ribs 51 is defined. The sum of 23 is F, and the two adjacent magnetic flux barrier grooves 51 The total distance 24 between all magnetic flux channels 52 is I, and I and F also satisfy the relationship of 0.8 ≦ I / F ≦ 1.15.
其中，當該轉子鐵芯31之直徑22大於60mm時，該磁通障壁槽51之兩側末端與該轉子鐵芯31之外緣的寬度不小於0.3mm。 Wherein, when the diameter 22 of the rotor core 31 is greater than 60 mm, the width of the ends of both sides of the magnetic flux barrier groove 51 and the outer edge of the rotor core 31 is not less than 0.3 mm.
其中，當該轉子鐵芯31之直徑22大於100mm時，該磁通障壁槽51之兩側末端與該轉子鐵芯31之外緣的寬度不小於0.4mm。 Wherein, when the diameter 22 of the rotor core 31 is greater than 100 mm, the width of the ends of both sides of the magnetic flux barrier groove 51 and the outer edge of the rotor core 31 is not less than 0.4 mm.
其中，當該轉子鐵芯31之直徑22大於130mm時，該磁通障壁槽51之兩側末端與該轉子鐵芯31之外緣的寬度不小於0.5mm。 Wherein, when the diameter 22 of the rotor core 31 is greater than 130 mm, the width of the ends of both sides of the magnetic flux barrier groove 51 and the outer edge of the rotor core 31 is not less than 0.5 mm.
其中，當該轉子鐵芯31之直徑22大於160mm時，該磁通障壁槽51之兩側末端與該轉子鐵芯31之外緣的寬度不小於0.6mm。 Wherein, when the diameter 22 of the rotor core 31 is greater than 160 mm, the width of the ends of both sides of the magnetic flux barrier groove 51 and the outer edge of the rotor core 31 is not less than 0.6 mm.
當該轉子鐵芯31之直徑22，及該磁通障壁槽51之兩側末端與該轉子鐵芯31之外緣的寬度如上所述之數值時，可避免轉子運轉時之製造精度及結構強度等問題。 When the diameter 22 of the rotor core 31 and the widths of the two ends of the magnetic flux barrier groove 51 and the outer edge of the rotor core 31 are as described above, the manufacturing accuracy and structural strength of the rotor during operation can be avoided. And other issues.
當該磁通障壁槽51之兩側末端與該轉子鐵芯31之外緣的寬度越薄，可得到最大之馬達特性。 When the widths of the two ends of the magnetic flux barrier groove 51 and the outer edge of the rotor core 31 are thinner, the maximum motor characteristics can be obtained.
較佳地，每一障壁單元5更包括一連接該複數磁通障壁51且位於q軸上之連接肋53，用以增加該轉子鐵芯31之結構強度。此外，該磁通障壁槽51中可填入熱塑性或熱固性之非導磁介質於其中，用以維持運轉之動平衡。 Preferably, each barrier rib unit 5 further includes a connecting rib 53 connected to the plurality of magnetic flux barrier ribs 51 and located on the q-axis to increase the structural strength of the rotor core 31. In addition, the magnetic flux barrier groove 51 may be filled with a thermoplastic or thermosetting non-magnetic conductive medium to maintain the dynamic balance of the operation.
配合參閱圖3，為具有上述轉子裝置之磁阻馬達，該磁阻馬達包括一具有一定子鐵芯71及纏繞於該定子鐵芯71上之分佈繞組72的定子裝置7，其中，該定子裝置7與該轉子裝置為間隔設置以同步運轉。 With reference to FIG. 3, it is a reluctance motor having the above-mentioned rotor device. The reluctance motor includes a stator device 7 having a stator core 71 and a distributed winding 72 wound on the stator core 71. The stator device 7 is spaced from the rotor device for synchronous operation.
依據上述結構說明，使用模擬軟體進行結果驗證，配合參閱圖4、5分別為外切圓的直徑21與轉子鐵芯的直徑22對轉矩及對轉矩漣波的模擬波形。於此，圖4~6是使用4個磁通障壁槽51與3個磁通通道52的障壁單元5進行模擬。本發明透過調整Rd1與Rd2的比例，使電機能產生最大的輸出功率(轉矩N-m)，由圖4可知，最大轉矩區域介於0.2~0.55之間。除了選擇最大輸出功率外，同時需讓電機運轉時能有較低的噪音，而同步電機轉矩漣波與電機震動噪音息息相關，由圖5可知，轉矩漣波(%)的最佳區域介於0.35~0.55之間。為了使馬達能有最大的輸出功率與最小的震動噪音，因此，0.35~0.55為最佳值，並滿足0.35≦Rd1/Rd2≦0.55關係式。 According to the above structure description, use simulation software to verify the results. Refer to Figures 4 and 5 for the simulated waveforms of the torque 21 and the torque ripple for the diameter 21 of the circumscribed circle and the diameter 22 of the rotor core, respectively. Here, FIGS. 4 to 6 are simulations of the barrier unit 5 using four magnetic flux barrier grooves 51 and three magnetic flux channels 52. According to the present invention, by adjusting the ratio of Rd1 and Rd2, the motor can generate the maximum output power (torque N-m). As shown in FIG. 4, the maximum torque range is between 0.2 and 0.55. In addition to selecting the maximum output power, it is also necessary to make the motor have lower noise while the synchronous motor torque ripple is closely related to the motor vibration noise. As shown in Figure 5, the best area for torque ripple (%) is Between 0.35 and 0.55. In order to make the motor have the maximum output power and the smallest vibration noise, 0.35 ~ 0.55 is the best value, and satisfies the relationship of 0.35 ≦ Rd1 / Rd2 ≦ 0.55.
參閱圖6、7，分別為相鄰兩磁通障壁槽51間的所有磁通通道52距離24的總和與所有磁通障壁槽51的中間部位厚度23的總和對轉矩的模擬波形。由圖6可知，最大轉矩區域介於0.8~1.3之間，由圖7可知，轉矩漣波最佳區域為0.7~1.15之間，考量電機的最大的輸出功率與最小的震動噪音，因此，0.8~1.15為最佳值，並滿足0.8≦I/F≦1.15關係式。 Referring to FIGS. 6 and 7, simulated torque waveforms of the sum of the distance 24 of all magnetic flux channels 52 between two adjacent magnetic flux barrier grooves 51 and the sum of the thicknesses 23 of the middle portions of all magnetic flux barrier grooves 51 are respectively. It can be seen from FIG. 6 that the maximum torque region is between 0.8 and 1.3. From FIG. 7, the optimal torque ripple region is between 0.7 and 1.15. Considering the maximum output power of the motor and the minimum vibration noise, therefore, , 0.8 ~ 1.15 is the best value, and satisfies the relationship of 0.8 ≦ I / F ≦ 1.15.
選用不同數量之障壁單元5的轉子裝置對馬達的輸出轉矩與輸出功率影響極大，在本較佳實施例中，採用四個障壁單元5，應用於高速1800RPM以上之轉速可獲得較高的輸出功率與效率，特別說明的是，上述提及於1800RPM之轉速敘述，僅為舉例說明，不應以此侷限本發明之範圍。 The use of different numbers of rotor units of the barrier unit 5 has a great impact on the output torque and output power of the motor. In this preferred embodiment, four barrier units 5 are used and can be used at high speeds above 1800 RPM to obtain higher output. Power and efficiency, in particular, the above-mentioned rotational speed description at 1800 RPM is for illustration only and should not be used to limit the scope of the present invention.
綜上所述，本發明轉子裝置及具有該轉子裝置的磁阻馬達，藉以該本體單元3，及該複數障壁單元5間相互設置，透過最靠近該轉子鐵芯31之圓心的磁通障壁槽51之中間厚度23大於兩端的厚度，且最靠近該轉子鐵 芯31之圓心的磁通障壁槽51之中間厚度23大於最遠離該轉子鐵芯31之圓心的磁通障壁槽51之中間厚度23，用以降低馬達轉矩漣波，進而以抑制震動噪音，再者，縮短該磁通障壁槽51之兩側末端與該轉子鐵芯31之外緣的寬度，可藉此得到最大之馬達特性，同時不會提高馬達的轉矩漣波之最佳設計，使馬達的效率達到最高水平，進而達到節省成本且可大量生產之目的，故確實可以達成本發明之目的。 In summary, according to the present invention, the rotor device and the reluctance motor having the rotor device are arranged between the body unit 3 and the plurality of barrier units 5 to pass through the magnetic flux barrier groove closest to the center of the rotor core 31. The middle thickness 23 of 51 is greater than the thickness at both ends, and is closest to the rotor iron. The intermediate thickness 23 of the magnetic flux barrier rib groove 51 of the center of the core 31 is greater than the intermediate thickness 23 of the magnetic flux barrier rib groove 51 of the circle center farthest from the rotor core 31, so as to reduce the motor torque ripple and further suppress the vibration noise. Furthermore, by shortening the width of the ends of both sides of the magnetic flux barrier groove 51 and the outer edge of the rotor core 31, the maximum motor characteristics can be obtained without optimizing the torque ripple of the motor. The efficiency of the motor reaches the highest level, thereby achieving the purpose of cost saving and mass production, so it can indeed achieve the purpose of cost invention.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 However, the above are only the preferred embodiments of the present invention. When the scope of implementation of the present invention cannot be limited by this, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, All are still within the scope of the invention patent.
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| WO2016020363A1 (en) * | 2014-08-04 | 2016-02-11 | Ksb Aktiengesellschaft | Rotor, reluctance machine and method for manufacturing the rotor |
| TW201640785A (en) * | 2015-05-12 | 2016-11-16 | Shanghai Gie Em Co Ltd | Permanent magnet assisted synchronous reluctance motor rotor which can be used in high-speed situation |
| US9866077B2 (en) * | 2012-02-10 | 2018-01-09 | Ksb Aktiengesellschaft | Rotor and reluctance motor |
| WO2018110971A1 (en) * | 2016-12-16 | 2018-06-21 | 주식회사 효성 | Line start synchronous reluctance motor and rotor thereof |
| WO2018172033A1 (en) * | 2017-03-21 | 2018-09-27 | Siemens Aktiengesellschaft | Synchronous reluctance machine |
| US10090720B2 (en) * | 2014-09-30 | 2018-10-02 | Siemens Aktiengesellschaft | Rotor comprising protruding webs |
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| CN100533916C (en) * | 2004-07-26 | 2009-08-26 | 乐金电子(天津)电器有限公司 | Combination of rotor in synchronous inductive reluctance motor |
| EP2903136A1 (en) * | 2014-01-31 | 2015-08-05 | Siemens Aktiengesellschaft | Reluctance rotor sheet with a recess for reducing stress |
| ITUB20150608A1 (en) * | 2015-04-14 | 2016-10-14 | Ge Avio Srl | METHOD OF REALIZATION OF A ROTOR STRUCTURE OF A SYNCHRONOUS RELUCTANCE ELECTRIC MACHINE, AND RELATED RELUCTANCE SYNCHRONOUS ELECTRICAL MACHINE |
| CN204615530U (en) * | 2015-05-12 | 2015-09-02 | 河北工业大学 | A kind of ALA rotor structure of synchronous magnetic resistance motor |
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| US9866077B2 (en) * | 2012-02-10 | 2018-01-09 | Ksb Aktiengesellschaft | Rotor and reluctance motor |
| WO2016020363A1 (en) * | 2014-08-04 | 2016-02-11 | Ksb Aktiengesellschaft | Rotor, reluctance machine and method for manufacturing the rotor |
| US10090720B2 (en) * | 2014-09-30 | 2018-10-02 | Siemens Aktiengesellschaft | Rotor comprising protruding webs |
| TW201640785A (en) * | 2015-05-12 | 2016-11-16 | Shanghai Gie Em Co Ltd | Permanent magnet assisted synchronous reluctance motor rotor which can be used in high-speed situation |
| WO2018110971A1 (en) * | 2016-12-16 | 2018-06-21 | 주식회사 효성 | Line start synchronous reluctance motor and rotor thereof |
| WO2018172033A1 (en) * | 2017-03-21 | 2018-09-27 | Siemens Aktiengesellschaft | Synchronous reluctance machine |
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