阅读说明：本技术 一种多用途双鼠槽型电机及其制造方法 (Multipurpose double-mouse slot type motor and manufacturing method thereof ) 是由 陈秋 于 2020-02-06 设计创作，主要内容包括：本发明公开了一种多用途双鼠槽型电机及其制造方法。步骤1：预制一个机械特性曲线,即M-s曲线；步骤2：设转矩倍数为K<Sub>st</Sub>,最大转矩倍数为K<Sub>M</Sub>及转差率为S和临界转矩倍数为K<Sub>Lj</Sub>；步骤3：计算电机的工作参数；步骤4：根据步骤4进行计算得到定、转子尺寸。本发明以解决现有技术中的问题,制造出符合厂矿的要求的多用途双鼠槽型电机。(The invention discloses a multipurpose double-mouse slot type motor and a manufacturing method thereof. Step 1: prefabricating a mechanical characteristic curve, namely an M-s curve; step 2: setting the torque multiple as K st Maximum torque multiple of K M And slip ratio is S and critical torque multiple is K Lj (ii) a And step 3: calculating working parameters of the motor; and 4, step 4: and (4) calculating according to the step 4 to obtain the sizes of the stator and the rotor. The invention aims to solve the problems in the prior art and manufacture the multipurpose double-mouse slot type motor which meets the requirements of factories and mines.)

1. The utility model provides a two mouse slot type motors of multipurpose, its characterized in that, two mouse slot type motors's rotor is pear shape iron core (1) and connects circular iron core (2), the stator slot includes pear shape semi-closed groove (3) and arc wall (4), pear shape semi-closed groove (3) intercommunication arc wall (4), pear shape iron core (1) and circular iron core (2) are packed into respectively in pear shape semi-closed groove (3) and arc wall (4), the stator slot cooperation the rotor uses.

2. The manufacturing method of a multipurpose double-mouse slot type motor as claimed in claim 1, comprising the steps of:

step 1: prefabricating a mechanical characteristic curve, namely an M-s curve;

step 2: setting the torque multiple as K_stMaximum torque multiple of K_MAnd slip ratio is S and critical torque multiple is K_Lj；

And step 3: calculating working parameters of the motor;

and 4, step 4: and (4) calculating according to the step 4 to obtain the sizes of the stator and the rotor.

3. The method as claimed in claim 2, wherein the step 3 is specifically:

the formula of critical slip is obtained from the standard K L OSS equation

In the formula S_eIs the rated slip;

the correction parameters are known from T-type and L-type equivalent circuits of asynchronous machines:

in the formula

Where r is 0 then

Z₀＝Z_l+Z_m＝(r_l+r_m)+j(X_l+X_m)＝R+jX₀，

In the L equivalent circuit, letThe calculation of the operating parameters of the motor, the corrected short-circuit leakage reactance of which can be summarized as the calculation C_l、r₁、r'₂、X_l、X‘₂、r_mAnd X_m；

Wherein I_oe＝(sinφ_e-tanφ"_2ecosφ_e)I_e，I_oeTo rated no-load current

φ"_2eIs composed ofConverted current from rotorThe angle of,

I_qeto start the current, for a dual-cage motor μ ═ 1.3,

the small capacity ξ is equal to 1, the large capacity ξ is equal to 0,

P_f＝(n_e/1000)²(10D₁)⁴+(0.05P₂/η)(2P＞2)

wherein D₁Is the outer diameter m, n of the stator_eIs the rotor speed rpm, P₂Outputting power W for the motor;

wherein

Stator and rotor copper loss

No load loss

R 'in the formula'₂(S)，X'₂(S) are the equivalent resistance and reactance of the rotor respectively,

wherein X'_L＝X_L-X_UL.X'_U＝X_U-X_UL，

X'₂(S)＝X_UL+X'_d(S)

Rotor resistance R'₂(S) and reactance X'₂(S) is a function of slip ratio, the double-cage motor is also a variable parameter motor, and when the motor runs under rated slip ratio, S is S ═ S_e≈0，

R'₂(0)＝R_LR_U/(R_L+R_U)

Wherein R'₂(0)、X'₂(0)、X'_d(0) Is a constant;

r 'under slip ratio S'₂(S)＝C_R(S)R'₂(0)、X'_d(S)＝C_X(S)X'_d(0)

In the formula

Wherein X'_R＝X_UR+X_R,X_RIs end-ring reactance, torque

M(S)＝3I_2'2R'₂(S)/S＝3I_2'2C_R(S)R'₂(0)/S＝f[S,C_R(S),C_X(S)]

C_R(S_Lj)＝C_X(S_Lj)≈1.0

R_U＝R'₂(0)(1+α),R_L＝R'₂(0)(1+α)/α

Technical Field

The invention relates to the field of motors, in particular to a multipurpose double-mouse slot type motor and a manufacturing method thereof.

Background

In the design of the motor, the size is determined and converted according to experience, then electromagnetic analysis is carried out, a prototype is manufactured, then a type test is carried out, a test value is compared with a standard performance index, and if the test value does not meet the requirement, the motor is redesigned to form a cycle. The computer aided motor design makes it possible to determine the size of stator and rotor, to perform electromagnetic analysis in computer, and to regulate the size of the stator and rotor, so that the final result of electromagnetic analysis can meet the design requirement, saving many steps in making prototype, shortening the development period of motor, lowering the design cost, and making the design distant from the industrial and mining requirements.

Disclosure of Invention

The invention aims to provide a multipurpose double-mouse slot type motor and a manufacturing method thereof, which aim to solve the problems in the prior art and manufacture the multipurpose double-mouse slot type motor meeting the requirements of factories and mines.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a two mouse slot type motors of multipurpose, the rotor of two mouse slot type motors is pear-shaped iron core 1 and connects circular iron core 2, the stator slot includes pear-shaped semi-closed slot 3 and arc wall 4, pear-shaped semi-closed slot 3 intercommunication arc wall 4, pear-shaped iron core 1 and circular iron core 2 are packed into respectively in pear-shaped semi-closed slot 3 and the arc wall 4, the stator slot cooperation the rotor uses.

The manufacturing method of the multipurpose double-mouse groove type motor comprises the following steps:

step 1: prefabricating a mechanical characteristic curve, namely an M-s curve;

step 2: setting the torque multiple as K_stMaximum torque multiple of K_MAnd slip ratio is S and critical torque multiple is K_Lj；

And step 3: calculating working parameters of the motor;

and 4, step 4: and (4) calculating according to the step 4 to obtain the sizes of the stator and the rotor.

Further, the step 3 specifically includes:

the formula of critical slip is obtained from the standard K L OSS equation

In the formula S_eIs the rated slip;

the correction parameters are known from T-type and L-type equivalent circuits of asynchronous machines:

in the formula

Where r is 0 then

Z₀＝Z_l+Z_m＝(r_l+r_m)+j(X_l+X_m)＝R+jX₀，

In the L equivalent circuit, letThe calculation of the operating parameters of the motor, the corrected short-circuit leakage reactance of which can be summarized as the calculation C_l、r₁、r'₂、X_l、X‘₂、 r_mAnd X_m；

Wherein I_oe＝(sinφ_e-tanφ″_2ecosφ_e)I_e，I_oeTo rated no-load current

φ″_2eIs composed ofConverted current from rotorThe angle of,

I_qeto start the current, for a dual-cage motor μ ═ 1.3,

the small capacity ξ is equal to 1, the large capacity ξ is equal to 0,

P_f＝(n_e/1000)²(10D₁)⁴+(0.05P₂/η) (2P＞2)

wherein D₁Is the outer diameter m, n of the stator_eIs the rotor speed rpm, P₂Outputting power W for the motor;

wherein

Stator and rotor copper loss

No load loss

R 'in the formula'₂(S)，X'₂(S) are the equivalent resistance and reactance of the rotor respectively,

wherein X'_L＝X_L-X_UL.X'_U＝X_U-X_UL，

X'₂(S)＝X_UL+X'_d(S)

Rotor resistance R'₂(S) and reactance X'₂(S) is a function of slip ratio, the double-cage motor is also a variable parameter motor, and when the motor runs under rated slip ratio, S is S ═ S_e≈0，

R'₂(0)＝R_LR_U/(R_L+R_U)

Wherein R'₂(0)、X'₂(0)、X'_d(0) Is a constant;

r 'under slip ratio S'₂(S)＝C_R(S)R'₂(0)、X'_d(S)＝C_X(S)X'_d(0)

In the formula

Wherein X'_R＝X_UR+X_R,X_RIs end-ring reactance, torque

M(S)＝3I_2'2R'₂(S)/S＝3I_2'2C_R(S)R'₂(0)/S＝f[S,C_R(S),C_X(S)]

C_R(S_Lj)＝C_X(S_Lj)≈1.0

R_U＝R'₂(0)(1+α),R_L＝R'₂(0)(1+α)/α

Has the advantages that:

1. the invention has strong practical significance, and the multipurpose can be realized only by meeting the requirements of industrial and mining use when the motor is in the high requirements of industrial and mining use.

2. The invention determines the groove type and the size of the stator and the rotor through the M-s curve, and has stronger pertinence.

Drawings

FIG. 1 is a schematic view of the mechanical characteristics of the present invention.

FIG. 2 shows a T-type equivalent circuit diagram and a L-type equivalent circuit diagram according to the present invention.

FIG. 3 is a circuit diagram showing (a) a rotor converted to a stator side, (b) an equivalent circuit of the diagram (a), and (c) an equivalent circuit of the diagram (b) according to the present invention.

FIG. 4 is a diagram of a variable parameter equivalent circuit according to the present invention.

Fig. 5 is a rotor slot pattern of the present invention.

Fig. 6 is a stator slot pattern diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.