FI117148B - Method and apparatus for mounting an axial flow permanent magnet synchronous machine - Google Patents

Description

METHOD. AND HARDWARE FOR AXIALVDO-KESTOMAl FOR PULL-UP ASSEMBLY

FIELD OF THE INVENTION

The invention relates to a method as defined in the Claim 1 i part. Further, the invention relates to the apparatus described in the preamble of claim 8.

BACKGROUND OF THE INVENTION

Axial Flow Permanent Magnetic Synchronous Machines are used as a sign of lift drive motors. From their point of view, the air between the stator and the rotor essentially interferes with the performance of the machine. I 15 length relative to other dimensions of the machine c very small. In one embodiment, the mechanical is about 1.2 mm. In addition, the magnetic gap between the rin and the stator is influenced by the large magnetic Em. in the application, the magnetic force is noir 20 The magnetically spaced air gap is actually e, which can be measured mechanically.

tO • · · ·, In the case of axial flow permanent magnet synchronous motors, the air gap adjustment is made on the dashboards avi * * * 25, thus the interface parts and the results based on ***; the need for adjustment plates. Regulator * * * ·· ;! this is only seen in fully assembled type 1 testing where the machine source voltage is measured, i.e. what voltage r <* 30 magnet induces the stator windings when r <· «· _ 2 is relatively uncontrolled due to the high mac pull of the rotor and rotor λ its supporting surface counteracts the safety and reliability of assembly work. One of the most common causes for 1¾ machine type testing at the moment is the misalignment of the source voltage due to the incorrect size range.

10 With current technology, the machine is configured using the api and the air gap adjustment is made by measuring the air gap. In one example, mechanical slit dimensions or push rods achieve a measurement accuracy of about 0.1 mm, Mike 15 with a magnetic force of about 300 N Work requires manual labor and involves a lot of uncertainty. In addition, the measurement of the air gap is an actual measurement because the thickness of the magnetic 20 adhesive layers and the protective aluminum sheet must be added magnetically to the measured air gap value.

·; PURPOSE OF THE INVENTION

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The object of the invention is to eliminate the disadvantages of n: T: 25 above.

9 · 9 9 ·: »It is a particular object of the invention to provide an esq.

Iin, and with it, the machine's performance. 30 Pa, fine tuning.

• 99 • • 999 999 9 9 3

It is a further object of the invention to provide a disclosure which improves the safety of the assembly

SUMMARY OF THE INVENTION

The method of the invention is characterized by what is disclosed in the turn section of claim 1. The apparatus according to the invention is characterized by what is set forth in the characterizing part of claim 10. Other aspects of the invention are characterized by what is stated in the claims. An inventive application is also disclosed in the specification of this application. The inventive application 15 in the application may also be defined otherwise than in the claims below. The invention i; the content may also consist of a number of distinct instances, especially if the invention was considered in the light of the benefits or classes of benefits obtained or derived from the tastes or implicit subtasks in Vale 20, some of the attributes contained in the claims below may be redundant. The features of the various embodiments may be applied by the inventions within the scope of the invention: 25 to others.

9 »* * 1« According to the invention, the known dependence between the magnetic gap between the s • 9 • · *** and the rotor is determined in advance by the magnitude of the 9 * * ··· '· magnetic dependence. attractiveness. The measured magm attraction is compared to the desired air gap mode: the corresponding magnetic attraction target value, when the measured magnetic attraction reaches the value corresponding to the desired air gap target value; rotor and stator.

Further according to the invention, apparatus for moving the rotor and stator 10 relative to one another and means for magnetic attraction between the rotor stator m.

An advantage of the invention is that in the assembly of the machine 15, when the machine is pre-assembled, the indirect control by means of an neethetic pull allows for air gap and allows the performance to be accurately measured Magnetic force can easily be measured with 20 N accuracy. achieves an order of magnitude ten times the accuracy of head adjustment than the known method • 99 · 9 9999. A further advantage of the invention is that the machine moth /: ·. 25 speeds up because the machine no longer has to be unpacked for * * * interval re-adjustment type te! • After 9 * "*. The quality of the machines is good. Quality control« I · • · · Time-consuming short. Safety at assembly * '··· *, because 30 tons of magnetic traction cannot be missed in the assembly. slamming against the stator.

5 11 lower than the target airline target value.

In one embodiment of the method, the sex of the air gap 5 is fixed to the stator and the rotor is moved axially relative to st.

In one embodiment of the method, the adjustment of the air gap by magnetic means is followed by rotation of the rotor relative to the stator at a specified low rotational speed. Rootto: During sensing, 15 known source voltages are measured on the stator windings. The measured source voltage is orbited to the target value of the source voltage, which is the target value of the range. The source voltage measured in the air gap is fine-tuned and deviates from the source voltage value. By rotating the sources with 20 direct measurements, fine measurement can compensate for the deviations ··· of the rotor and stator p and the central axes and their angular positions.

«···» * t 25 In one embodiment of the method, the assembly of the machine is continued only after the airflow.

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··· In one embodiment of the method, the stator k * a * * · ·· * is mounted on a stationary substrate such that the stator 30 is upright. The rotor connects * to the slider. The hoist is used to lower the root

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In one embodiment of the method, the lifting device is positioned below the stator. To determine my strength, select a press scale that is placed on the lifting lever. The support member is placed on top of the press scales. The press balance remains between the lifting device and the rotor. The support member is inserted into the center opening of the stator so that the upper support surface of the support member extends above the target at a distance greater than the target value. The rotor is positioned on the y 10 support surface. With the help of a lifting device, the bar is lowered and the magnetic force is measured with a press scale.

In one embodiment of the apparatus, the apparatus 15 is provided with a mounting member for securing the stator to the substrate so that the axial direction of the stator.

In one embodiment of the apparatus, the apparatus 20 is provided with a support member having an upper support surface for rotor tales.

In one embodiment of the apparatus, the means for moving the rin and the stator • * 25 relative to one another include a hoisting device.

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In one embodiment of the apparatus, the lifting devices * · ψ include a vertically movable spindle, such as a «Mi. ···. like that.

• * 30. In one hardware application for tools ·· «« | . . . Λ,.

Λ * m m J n ni · a n 1-a h »« w 1 M M «mm i- J. am a..a J _ 7

In the following, the invention will be described in more detail by way of exemplary embodiments with reference to the drawing, in which Figure 1 is a cross-sectional view of an embodiment of the apparatus of invention i and Figure 2 illustrates the dependence of air gap and magnetic force on

10

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows the apparatus for axial flow-duration <synchronization of the synchronous machine configuration and air gap.

15

The axial flow permanent magnet synchronous machine has a rotor 4 with reverse rotation and a rotor 4 with permanent magnets 3. The stator 2 and rotor 4 have an air gap 5. The stator 2 and rotor 4 are successive in the direction of rotation of 20 r. Edu! the air gap 5 is the ratio of the axis of rotation of the rotor 4 in a straight plane. Figure 1 does not show the bearing between the r and the stator.

The apparatus comprises a desk with a hole * * * * · * * forming a fixed base 6 to which the stator is fastened by means of fastening means 14, preferably by staples 2 so that the stator 2 esi: ***: is vertical.

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The apparatus includes a lifting device 7 having a support member 9 having a contact surface 11 for supporting the rotor 4 on the cross member 8 for measuring the magnetic attraction between the root 30 8 2 and the magnetic member acting on the support member 9 to actuate the magnetic attraction. In addition, the apparatus includes a rotation IC for rotating the rotor 4 and a measuring interval for measuring the source source induced in the windings 1 of the stator 2.

10

Figure 2 shows, in an exemplary tap, the calculated ratio of the nth force between the stator 2 and the rotor 4 to the air gap size. The magni force is greater the smaller the i] 15 The dependence is almost linear. Exactly not linear, but can be linearized, linearization applies to a limited air gap Dependency can be determined computationally from tea or measured.

20

The magnetic attraction between the stat and the rotor 4 is calculated in advance. Known dependency between magnitude 5 intervals • • 9 * * · | emotion tun dependence determines «I · 25 air gap target value of magnetic \ ** ·? man target value.

* When the rotor 4 and the stator 2 are mounted ··· * the following procedure applies in relation to each other »* · 30 Λ · 'Initially the stator 2 is fixed in a fixed position **** Vsall A o ti HrnnÄirf oh lr! -ΐ τι τι ΐ t-ireal im ·! 1 1 3 1 A The upper bearing surface 11 of the support member 9 extends over a distance of more than the target value V 5. The rotor 4 is placed on a support for the upper support surface 11.

5

The air gap target value can be retrieved by raising and / or increasing the air gap. If, initially, the air gap output value is higher, the rotor 4 is slowly lowered from the said air gap value of the lifting device 1, 10, to the desired target value corresponding to the machine operating characteristics. The air gap can be adjusted accordingly. During the movement, the magnetic attraction between the stator 2 and 15 rin 4 by compression \. You want the measured magnetic attraction to be within the range of the magnetic pull corresponding to the target value. When the magnetic attraction is the target value corresponding to the desired air gap, the center position of the rotor 2 and the stator 4 is locked.

. Magnetic attraction i] ··; After adjusting and before locking the rotor 2 and the static 25 positions, it is still possible to make the air diff • »·: adjust as follows.

The rotor 4 is rotated by a rotating device 12 with respect to a rotor 2 at a predetermined small rotation 30. At the same time, the winding of the stator 2 is measured: the dosing source voltage of the stator navois »

When airy li 5 is s as described above; machine configuration can be continued.

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The invention is not limited to the above examples of warping, but many others are possible within the scope of the inventive idea claimed.

• * * «» ft »« ftftft • »I •» »• ♦ · I ·» • ft * ft »ft ftftft ft ft ft ft ft ft ft ft ft ft ft ft ftftft ft. ft ftft ft 11 REFERENCE NUMBER LIST: coils (1) stator (2) 5 permanent magnets (3) rotor (4) air gap (5) fixed base (6) lifting device (7) 10 force measuring device (8) support piece (9) center bearing surface (10) (11) rotating means (12) 15 measuring means (13) fastening means (14) spindle (15) 999 «• · · · * 9 9 9« «t 9 9 m 9 m ψ 9 9 9 * · 9 9 9 * •• 9 9 9 9 •• 9 9 9 9 9 99 999 9 9 9 9 99 9 9 9 9 9 9 9 999 9 999 9 9 9 9 9 9 9

Claims (9)

A method of assembling a pneumatically magnetized synchronous axial flow, comprising a stator (2) permanently provided with windings (1) and a rotor (4), and between which stator and air gap (5), and in which machine the stator (2) and the rotor (4) in the rotation of the rotor; follow one another, and in which method the known relationship between the tensile force between the stator (2) and the rotor (4) and the size of the air gap (5) determines and on the basis of known connection the mean value of the magnetic traction corresponding to the desired air gap 10, and in which method is adjusted by shifting the rotor (4) and the stator (2) axially in relation to the predetermined target value, characterized in that when the rotor (4) and the stator in position relative to each other: 15. during the displacement, the magnetic traction between stator (2) is measured and - the measured magnetic traction is compared with the magnetis corresponding to the mean value in the air gap. k when the measured magnetic traction when the target value corresponding to the desired air gap is read the mutual position of the rotor and the stator. ♦ »··· A method according to claim 1, characterized in that the air gap (5) is installed: T: if a value is greater than the predetermined target value of the air gap against the target value, and / or by increasing the air gap from a value less; .:. predetermined target value against the predetermined target value. * 99 ·· 18 - causes the rotor (4) to rotate relative to the stator (2) at a fast rotational speed, - while the rotor (4) rotates it measures in the winding (1) of the stator (2), - compared to the measured electromotive force with the mean value of the fire force corresponding to the mean value of the air gap, and 10. fine-tune the air gap (5) about the measured electromotive force and the mean value of the electromotive force. 5. A method according to any of claims 1-4, characterized in that the machine continues after the adjustment of the air gap. 15 Method according to any of claims 1-4, characterized in that - the stator (2) is fixed to a fixed foundation (6) such that the stator shaft is vertical, 0. the rotor (4) is connected to a lifting device (7), - the rotor (4) with the lifting device (7) is lowered in axial direction against the stator (2) so that the rotomy: · # · simultaneously coincides with the center axis of the stator, and • the magnetic traction between the rotor and stator is measured with a dynamome *** J • 999 9 9999. ···. The method of claim 6, characterized in that * 99. - the hoist (7) is placed under the stator (2), 30 999 19 <| - the support member (9) is pushed through the center opening (10) of the stator (2) so that support support surface (11) when a distance above the stator larger than the i-rotor (4) of the air gap (5) is placed on top of the upper supporting surface (11) ), and the 5 - rotor (4) is lowered downward with the lifting device (7) and the magnetic thrust thrust sensor (8). Apparatus for assembling a pen-magnetized synchronous machine flow, which machine comprises a stator (2) provided with windings (1) permanent magnets (3), rotor (4), and between which the stator and air gap (5), and in which machine the stator (2) and the rotor (4) in the rotation of the rotor * follow one another, and in which method the known relationship between the tensile force between the stator (2) and the rotor (4) and the size of the air gap (5) determines and which device comprises equipment (7) capable of displacing the rofom (4) and axially in relation to each other, the device having the purpose of characterizing that the device comprises equipment (8) which measures the traction between the rotor and the stator and compares it with the meter. Device according to claim 8, characterized in that the device comprises (12) which causes the rotor (4) to rotate and feeding equipment (13) which measures the induced winding (1) of the electric motor force. A device according to claim 8 or 9, characterized in that the device 25 (14) which fastens the stator (2) at a fixed foundation (6) says to stand · ·· vertical. 9. mm 999 9 9 • 9 99 9 Device according to any one of claims 8-10, characterized in that ^ comprises a support member (9) with an upper support surface (11) supporting the rotor (4). • · · ** · 30 • · • · ___ „_ _ _ _. _ _ _. 20 Device according to claim 13, characterized in that the equipment for the magnetic traction between stator (2) and rotor (4) comprises a pressure * (8) arranged between the spindle (15) and the supporting member (9). • · · «♦ # ft · · ** · ♦« ft * · * ft * * * * «• · ·· ♦ ft • · · • · *« «« · • · ♦ · ♦ * · • · · • ♦ · ♦ · «ft ··