KR101241391B1 - Ac permanent magnet synchronous electrical machine - Google Patents

Ac permanent magnet synchronous electrical machine Download PDF

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KR101241391B1
KR101241391B1 KR1020117007006A KR20117007006A KR101241391B1 KR 101241391 B1 KR101241391 B1 KR 101241391B1 KR 1020117007006 A KR1020117007006 A KR 1020117007006A KR 20117007006 A KR20117007006 A KR 20117007006A KR 101241391 B1 KR101241391 B1 KR 101241391B1
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South Korea
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air gap
pole
rotor
permanent magnet
stator
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KR1020117007006A
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Korean (ko)
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KR20110053371A (en
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쇼오화 쉬
쨘중 지앙
위에진 짱
위에 최
리엔 루
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쇼오화 쉬
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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
    • H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • 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
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

본 발명은 일종의 교류 영구자석 동기 전기기기로써, 고정자(1)와 상기 고정자(1)내에 설치되어 있는 회전자(2)가 포함되며, 상기 회전자(2)의 외주면과 상기 고정자(1)의 내벽 사이에는 에어 갭(7)이 구비되며, 에어 갭(7)의 최소 에어 갭의 길이는 gmin이고, 또한 가장 작은 에어 갭의 길이를 갖춘 그 포지션의 기계 각도θ는 0도이며, 전기기기의 극 쌍수는 p이며, 전기 각도가 pθ인 포지션의 에어 갭 길이는 g(pθ)이며, 일정한 전기 각도 범위 내의 포지션을 구비한 g(pθ)는 전기 각도와 코사인 반비례되는 함수인 것을 특징으로 한다.The present invention is a kind of alternating current permanent magnet synchronous electrical apparatus, comprising a stator (1) and a rotor (2) installed in the stator (1), the outer peripheral surface of the rotor (2) and the stator (1) An air gap 7 is provided between the inner walls, the length of the minimum air gap of the air gap 7 is g min , and the mechanical angle θ of the position with the smallest air gap length is 0 degrees. The pole pair of p is p, the air gap length of the position with an electrical angle of pθ is g (pθ), and g (pθ) with a position within a certain electrical angle range is a function inversely proportional to the electrical angle and cosine. .

Description

교류 영구자석 동기 전기기기 {AC PERMANENT MAGNET SYNCHRONOUS ELECTRICAL MACHINE}AC Permanent Magnet Synchronous Electric Machine {AC PERMANENT MAGNET SYNCHRONOUS ELECTRICAL MACHINE}

본 발명은 일종의 교류 영구자석 동기 전기기기로써, 전기기기를 생산 및 제조하는 기술영역에 관한 것이다.The present invention is a kind of alternating current permanent magnet synchronous electrical equipment, and relates to a technical area for producing and manufacturing electrical equipment.

교류 영구자석 동기 전기기기는 제어기술의 발전과 응용이 널리 보급됨에 따라서, 최근에는 서보 모터가 주목받고 있다. 또한 모터의 양호한 성능을 얻기 위해, 당업자들은 영구자석에 의하여 발생되는 유도기전력이 사인파 전력인 것을 바라고 있다. 이를 위해서 균일한 에어 갭 모터에 특수한 권선 결선 혹은 비뚤어진 홈 등 방법이 사용되어 고조파를 약하게 하고 있지만 이상적인 효과를 얻지 못한 실정이다.As the AC permanent magnet synchronous electric equipment has been widely used in the development and application of control technology, servo motors have attracted attention in recent years. Also, in order to obtain a good performance of the motor, those skilled in the art are hoping that the induced electromotive force generated by the permanent magnet is sinusoidal power. To this end, a special winding connection or a crooked groove is used for a uniform air gap motor to weaken harmonics, but the ideal effect is not obtained.

본 발명은 전술한 문제점을 해결하기 위한 것으로서, 특수한 권선 결선으로 고조파를 약하게 하는 방식을 고려하지 않더라도, 동작 원리로 사인파 전력을 얻을 수 있는 운전 성능이 양호한 일종의 교류 영구자석 동기 전기기기를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a kind of AC permanent magnet synchronous electric device having good driving performance to obtain sine wave power based on the operating principle even without considering a method of weakening harmonics with a special winding connection. There is a purpose.

상기 목적을 달성하기 위하여 본 발명의 교류 영구자석 동기 전기기기는, 고정자와, 상기 고정자 내에 설치되어 있는 회전자가 포함되고, 상기 회전자의 원주면과 고정자의 내벽 사이에는 에어 갭이 형성되며, 자극 중심선에서 가장 작은 에어 갭의 에어 갭 길이를 gmin으로 정의하고, 만약 그 점을 벗어나는 기계 극 호각을 θ로 하면, 전기기기의 극 쌍수는 p이며, 그 극 호각의 전기 각도는 극 호각 θ와 극 쌍수 p의 승적 pθ이며, 전기 각도 pθ에 대응되는 에어 갭 길이를 g(pθ)로 정의한다면, g(pθ)는 아래와 같은 공식으로서, In order to achieve the above object, the AC permanent magnet synchronous electric machine of the present invention includes a stator and a rotor provided in the stator, and an air gap is formed between the circumferential surface of the rotor and the inner wall of the stator. The air gap length of the smallest air gap at the center line is defined as g min , and if the machine pole whistle outside of that point is θ, the pole pair number of the electric machine is p, and the electric angle of the pole whistle is If the product is a product of p pairs of pole pairs p and the air gap length corresponding to the electrical angle pθ is defined as g (pθ), g (pθ) is expressed as

0≤ pθ≤73°일 때0≤ pθ≤73 °

Figure 112011022157384-pct00001
Figure 112011022157384-pct00001

73°≤pθ≤107°일 때

Figure 112011022157384-pct00002
When 73 ° ≤pθ≤107 °
Figure 112011022157384-pct00002

107°≤ pθ≤180°일 때When 107 ° ≤ pθ≤180 °

Figure 112011022157384-pct00003
Figure 112011022157384-pct00003

pθ≥180°일 때, 에어 갭의 길이 g(pθ)는 주기성 변화를 나타내며,즉

Figure 112011022157384-pct00004
When pθ≥180 °, the length g (pθ) of the air gap represents the periodicity change, i.e.
Figure 112011022157384-pct00004

상기 공식 중 k는 임의의 정수이다.K in the formula is any integer.

상기 전기기기 극 쌍수의 값은 회전자 극수의 1/2이다.The value of the number of poles of the electric device is 1/2 of the number of poles of the rotor.

본 발명의 고정자와 회전자사이에서 반경방향의 에어 갭 길이는 일정한 극 호각범위 내에서 극 호각 전기 각도 코사인에 따라 반비례 변화되며, 철심이 포화가 아닐 때, 에어 갭 자속 밀도는 코사인변화에 다가가며, 특수한 권선 결선으로 고조파를 약하게 하는 방식을 고려하지 않더라도, 무부하 전력으로 하여금 사인 변화에 가깝게 함으로써, 전기기기가 양호한 운전 성능을 갖게 한다.The radial air gap length between the stator and the rotor of the present invention varies in inverse proportion to the pole whistle electric angle cosine within a constant pole whistle range, and when the iron core is not saturated, the air gap magnetic flux density approaches the cosine change. However, even without considering the method of weakening harmonics with a special winding connection, the unloaded power brings the sine change to a good electrical performance.

바람직한 실시예에서, 상기 회전자는 회전자철심과, 상기 회전자철심 내에 균일하게 삽입되는 영구자석이 포함되며, 상기 영구자석의 횡단면은 직사각형이다.In a preferred embodiment, the rotor includes a rotor core and a permanent magnet inserted uniformly in the rotor core, the cross section of the permanent magnet is rectangular.

상술한 바와 같이 본 발명의 교류 영구자석 동기 전기기기는, 특수한 권선 결선으로 고조파를 약하게 하는 방식을 고려하지 않더라도, 동작 원리로 사인파 전력을 얻을 수 있는 운전 성능이 양호한 특성이 있다.As described above, the AC permanent synchronous electric machine of the present invention has a characteristic of good driving performance that can obtain sinusoidal power based on the operating principle without considering a method of weakening harmonics with a special winding connection.

도 1은 본 발명의 일종의 조립 구조설명도;
도 2는 본 발명의 일종의 고정자 플레이트에 대한 구조설명도;
도 3은 본 발명의 일종의 회전자 플레이트에 대한 구조설명도;
도 4는 본 발명의 일종의 에어 갭 길이에 대한 구조설명도.1 is a schematic diagram illustrating an assembly structure of the present invention;
Figure 2 is a structural diagram of a stator plate of the present invention;
3 is a structural diagram of a rotor plate of the present invention;
Figure 4 is a structural diagram of the air gap length of the present invention.

이하, 실시 예는 첨부된 도면과 함께 본 발명의 기술 방안에 대해 더욱 상세히 설명한다. Hereinafter, the exemplary embodiments will be described in more detail with reference to the accompanying drawings.

도 1에 도시된 바와 같이, 고정자철심과, 코일 권선을 구비한 고정자(1)내에 설치된 동심을 갖는 회전자(2)가 포함되고, 회전자(2)의 원주면과 고정자(1)의 내벽 사이에는 에어 갭(7)이 형성되며, 고정자철심의 고정자 플레이트(3)는 도 2에 도시된 바와 같이, 고정자 플레이트(3)는 보통 교류 전기기기의 고정자철심 플레이트와 비슷하고, 실리콘 스틸 시트로 펀칭하여 조립된 것이며, 2 개의 동심원으로 동심 링을 구성하며, 또한 코일을 끼워 넣기 위해 홈(4)이 균일하게 분포된다.As shown in FIG. 1, a stator iron core and a concentric rotor 2 installed in a stator 1 having a coil winding are included, and a circumferential surface of the rotor 2 and an inner wall of the stator 1 are included. An air gap 7 is formed therebetween, and the stator plate 3 of the stator core is shown in FIG. 2, and the stator plate 3 is usually similar to the stator core plate of the AC electric machine, and is made of silicon steel sheet. It is assembled by punching, constitutes a concentric ring with two concentric circles, and the grooves 4 are uniformly distributed to fit the coil.

도 3에 도시된 바와 같이, 회전자 플레이트(5)에는 영구자석의 삽입에 사용되는 4 개의 삽입 홈(6)이 균일하게 분포되고, 영구자석의 단면은 직사각형이며, 회전자 플레이트(5)의 원주는 서로 다른 곡선 구간으로 구분되며, 도 3에 도시된 회전자는 4 극이고, 전기기기의 극 쌍수는 2 쌍이며, 원주는 8 개 부분으로 나누되, 4 개 부분은 고정자 원호와 에어 갭이 구성되고, 각 점의 에어 갭 길이는 도 4에 도시된 바와 같다.As shown in FIG. 3, four insertion grooves 6 used for inserting the permanent magnet are uniformly distributed in the rotor plate 5, the cross section of the permanent magnet is rectangular, and The circumference is divided into different curved sections, the rotor shown in FIG. And the air gap length of each point is as shown in FIG.

자극 중심선에서 가장 작은 에어 갭의 에어 갭 길이를 gmin으로 정의하고, 만약 그 점을 벗어나는 기계 극 호각을 θ로 하면, 전기기기의 극 쌍수 p의 값은 2 이며, 그 극 호각의 전기 각도는 극 호각 θ와 극 쌍수 p의 승적 pθ이며 값은 2θ이고, 전기 각도 pθ에 대응되는 에어 갭 길이를 g(pθ)로 정의한다면, g(pθ)는 아래와 같은 공식으로서,If the air gap length of the smallest air gap at the pole center line is defined as g min , and if the machine pole whistle outside of that point is θ, the value of the pole pair p of the electric machine is 2, and the electric angle of the pole whistle If the product is a product of p arc of the polar arc angle θ and the pole pair p, the value is 2θ, and the air gap length corresponding to the electric angle pθ is defined as g (pθ), g (pθ) is expressed as

0≤pθ≤73°일 때, 즉 0≤θ≤36.5°

Figure 112011022157384-pct00005
When 0≤pθ≤73 °, i.e. 0≤θ≤36.5 °
Figure 112011022157384-pct00005

73°≤ pθ≤107°일 때, 즉 36.5°≤θ≤53.5°When 73 ° ≤pθ≤107 °, i.e. 36.5 ° ≤θ≤53.5 °

Figure 112011022157384-pct00006
Figure 112011022157384-pct00006

107°≤ pθ≤180°일 때, 즉 53.5°≤θ≤90°107 ° ≤pθ≤180 °, i.e. 53.5 ° ≤θ≤90 °

Figure 112011022157384-pct00007
Figure 112011022157384-pct00007

pθ≥180°일 때, 즉 θ≥90°일 때, 에어 갭의 길이 g(pθ)는 주기성 변화를 나타내며, 즉 When pθ≥180 °, i.e., when θ≥90 °, the length g (pθ) of the air gap indicates a change in periodicity, i.e.

Figure 112011022157384-pct00008
Figure 112011022157384-pct00008

상기 공식 중 k는 임의의 정수이다.K in the formula is any integer.

Claims (2)

고정자와, 상기 고정자 내에 설치되어 있는 회전자가 포함되며,
상기 회전자의 원주면과 상기 고정자의 내벽 사이에는 에어 갭이 형성되는 교류 영구자석 동기 전기기기에 있어서,
자극 중심선에서 가장 작은 에어 갭의 에어 갭 길이를 gmin으로 정의하고, 만약 그 점을 벗어나는 기계 극 호각을 θ로 하면, 전기기기의 극 쌍수는 p이며, 그 극 호각의 전기 각도는 극 호각 θ와 극 쌍수 p의 승적 pθ이며, 전기 각도 pθ에 대응되는 에어 갭 길이를 g(pθ)로 정의한다면, g(pθ)는 아래와 같은 공식으로서,
0≤ pθ≤73°일 때
Figure 112012076776202-pct00009

73°≤ pθ≤107°일 때
Figure 112012076776202-pct00010

107°≤ pθ≤180°일 때
Figure 112012076776202-pct00011

pθ≥180°일 때, 에어 갭의 길이 g(pθ)는 주기성 변화를 나타내며, 즉
Figure 112012076776202-pct00012

상기 공식 중 k는 임의의 정수이며,
상기 전기기기 극 쌍수의 값은 회전자 극수의 1/2이고,
상기 회전자는 회전자철심과, 상기 회전자철심 내에 균일하게 삽입된 영구자석이 포함되고, 상기 영구자석의 횡단면은 직사각형인 것을 특징으로 하는 교류 영구자석 동기 전기기기.A stator and a rotor installed in the stator,
In the AC permanent magnet synchronous electric device wherein an air gap is formed between the circumferential surface of the rotor and the inner wall of the stator,
If the air gap length of the smallest air gap at the pole center line is defined as g min , and if the machine pole whistle outside of that point is θ, the pole pair number of the electric machine is p, and the electric angle of the pole whistle is pole whistle θ. If the product is a product of p pairs of pole pairs p and an air gap length corresponding to the electrical angle pθ is defined as g (pθ), g (pθ) is expressed as
0≤ pθ≤73 °
Figure 112012076776202-pct00009

When 73 ° ≤ pθ≤107 °
Figure 112012076776202-pct00010

When 107 ° ≤ pθ≤180 °
Figure 112012076776202-pct00011

When pθ≥180 °, the length g (pθ) of the air gap indicates the periodicity change, i.e.
Figure 112012076776202-pct00012

K in the formula is any integer,
The value of the pole number of the electric device is 1/2 of the number of poles of the rotor,
And the rotor includes a rotor core and a permanent magnet uniformly inserted into the rotor core, and a cross section of the permanent magnet is rectangular. 삭제delete
KR1020117007006A 2008-12-29 2009-03-13 Ac permanent magnet synchronous electrical machine KR101241391B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN200810163507A CN101771316A (en) 2008-12-29 2008-12-29 AC permanent magnet synchronous motor
CN200810163507.3 2008-12-29
PCT/CN2009/070780 WO2010078734A1 (en) 2008-12-29 2009-03-13 Ac permanent magnet synchronous electrical machine

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KR20110053371A KR20110053371A (en) 2011-05-20
KR101241391B1 true KR101241391B1 (en) 2013-03-11

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CA2737357A1 (en) 2010-07-15
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CA2737357C (en) 2013-10-08

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