CN2115604U - High-efficiency energy-saving sine winding motor - Google Patents

Abstract

The utility model discloses a high-efficient energy-conserving sinusoidal winding motor, it is the improvement on the basis of ordinary three-phase winding motor. The wiring mode is extended triangle and star triangle. The electrical angle of each phase winding of the star-shaped part is 30 degrees after that of the phase winding of the triangle part in the stator slot, the phase potentials of the triangle part and the star-shaped triangle part are 120 degrees, the electrical angle is 120 degrees, and the number of turns of each phase winding of the triangle part is that of the star-shaped partThe length of the series conductor of each phase winding being a star-shaped portionThe cross-section of the series conductor being a star-shaped partThe phase resistance is 3 times that of the star portion.

Description

High effective energy saving motor with sine windings

The utility model relates to a kind of energy-efficient sinusoidal winding motor, and specifically improved sinusoidal winding motor on the basis of common three-phase winding motor belongs to electric motors.

As everyone knows, on three phase windings of common induction motor, the strong and weak motor properties that directly influences of the high order harmonic component that is comprised, existing three-phase winding motor, owing to itself intrinsic mode of connection, it is very strong to use high order harmonic component, directly influence the power output of motor, and it is very big to use noise, the temperature height, the more important thing is owing to five times in three phase windings, seven inferior a series of harmonic magnetic potential influences, a series of high order harmonic components can not be eliminated in the magnetic potential curve, directly influence motor performance, use relatively expense, Chinese patent CN2053396U discloses a kind of efficient threephase asynchronous, it is the improvement to existing J02 series motor, its scheme is: every phase trough of belt number that will have 60 ° of facies tract stator winding now is divided into qY and q △ two parts by certain requirement, the facies tract of respectively doing for oneself, again with several to the homophase on the same group under the magnetic pole qY and after the utmost point phase component of q △ is not connected in a certain way, the winding that obtains is connected into star triangle polyphone winding, this method of attachment can reduce the loss of motor, improves electric efficiency, but can't accomplish for reaching purpose of energy saving from winding wiring mode elimination high order harmonic component.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art, and provides a kind of mode of connection from coil to reach purpose of energy saving, eliminates high order harmonic component, strengthens the energy-efficient sinusoidal winding motor of motor first-harmonic and magnetic potential.

The purpose of this utility model is achieved in that the utility model is an improved energy-efficient sinusoidal winding motor on the basis of common three-phase winding motor.Its mode of connection is two kinds on extend-triangle and a star triangle.The extend-triangle connected mode is: respectively the triangular portions winding is connected into a triangle, star part winding connects into a star, then three tail heads of star winding are connected to three tops of delta windings, the first head of star are drawn be connected to power supply; Star triangle connected mode is: respectively the triangular portion sub-winding is connected into a triangle, three of being connected into after the star star of star winding enter the top that head is connected on delta windings respectively, and star is partly drawn tap and is connected to power supply then.

The purpose of this utility model can also reach by following measure: the every phase winding of star part is arranged in stator slot and is lagged behind 30 ° of electrical degrees of triangular portions phase winding, makes induced potential in two parts phase winding that the phase difference of 30 ° of electrical degrees be arranged.120 ° of electrical degrees of extend-triangle and the leg-of-mutton electromotive force mutually of star mutual deviation, for reaching the purpose of eliminating high order harmonic component, in positive chorded winding, the every phase winding number of turn of triangular portions that extend-triangle connects is the star part

Doubly, every phase winding series conductor length is the star part

Doubly, triangle polyphone cross-sectional area of conductor is the star cross-sectional area of conductor of partly contacting

Doubly, the every phase resistance in triangle coupling part is 3 times of the every phase resistance of star part.The coefficient of star winding is 0.58-0.72.

The utility model is described in further detail to implement meeting below in conjunction with (accompanying drawing):

The structural representation that Fig. 1 connects with positive chorded winding of the present utility model.

Fig. 2 is an extend-triangle syndeton schematic diagram of the present utility model.

Fig. 3 is a star triangle syndeton schematic diagram of the present utility model.

The wiring arrangement mode of Fig. 1 is that two groove triangles connect A _{△ 1}, a groove Y-connection AY ₁, two groove Y-connection BY ₂, so once arrange.The connected mode of figure intermediate cam shape is A _{△ 1}For triangle connects A _△The first days of a year or a month, A _{△ 2}Be tail head, B _{△ 1}For triangle connects B _△The first days of a year or a month, B _{△ 2}Be tail head, C _{△ 1}For triangle connects C _△The first days of a year or a month, C _{△ 2}Be tail head, A _{△ 1}With C _{△ 2}Be connected B _{△ 1}With A _{△ 2}Be connected C _{△ 1}With B _{△ 2}Be connected, extract three statures 1,2,3 respectively out.The connected mode of star part is AY ₁Be the first days of a year or a month of Y-connection AY, AY ₂Be tail head, BY ₁Be the first days of a year or a month that star BY connects, BY ₂Be tail head, CY ₁Be the first days of a year or a month of Y-connection CY, CY ₂Be tail head, AY ₁Be connected BY with triangle tap 1 ₁Be connected CY with triangle tap 2 ₁Be connected with triangle tap 3, by AY ₂, BY ₂CY ₂The tap 4,5,6 of drawing is received on the power supply respectively.

Embodiment 1: to the transformation of J02-42-4 5.5kw motor.

Before the transformation: number of stator slots 36, every slot coil number of turn=42

Lead wire gauge: 1.12mm high strength enamelled wire

Winding configuration: individual layer staggered form

Connection: triangle connects

Parallel branch one road triangle connects

Transform the back: positive chorded winding extend-triangle, the leg-of-mutton computational methods of star:

Winding configuration: double-deck lap wound

The every groove number of turn of star part NY=NS * 0.7=29.4 gets NY=28

The every groove number of turn of gable N △=NS *

=50.9 get N △=50

Cross-sectional area of conductor is long-pending:

Star coil sections number of turn sectional area: AY=AC *

=1.71mm

Route selection rule 2-φ 1.04mm

The triangular portion coil section is long-pending: A △=AY *

=0.99mm

Route selection rule φ 1-1.12mm

Positive chorded winding star triangle:

The every slot coil number of turn of star part NY=NS * =48 get 50

The every slot coil number of turn of gable N △=NS * 2=84 gets 86

Star coil sections sectional area AY=AC * =0.86mm

Route selection rule 1-φ 1.06mm

The triangular portions coil section is long-pending: A △=AC * 1/2=0.49mm

Route selection rule 1-φ 0.83mm

Embodiment 2:GJ02 series motor.GJ02 series motor is sinusoidal winding motor, is improved in the motor base (MB) of J02 series.

GJ02 series electromotor series is 2-4-6

The groove number is 24-36-54-72

Capacity is 3.0kw-30kw

The computing formula of the positive chorded winding of GJ02 motor is:

Star part: electric current I Y=I ₁=I φ (I ₁Be electric current, I φ is a phase current)

Current density: JY=(IY)/(AY)=(I ₁)/(AY)=(I φ)/(AY) (IY is a star part phase current, and JY is the current density of star part, and AY is the series coil sectional area of star part) triangular portions: electric current

Current density:

(I _△Be the triangular portions phase current, I φ is the triangular portions current density, A _△Be triangular portions series coil sectional area)

Triangular portions and star coil sections number equate that the every phase number of turn of triangular portions is the every number of turn mutually of star part and every groove conductor number with every groove conductor number

Doubly, series conductor length triangular portions is the star part

Doubly, series conductor cross section triangular portions is the star part

Times, every phase resistance triangular portions is 3 times of star part.The triangular portions reactance is 3 times of star part reactance.The every slot coil number of turn of star part winding coefficient is between 0.58-0.72, and optimum coefficient is 0.7, extend-triangle and 120 ° of the leg-of-mutton electromotive force mutually of star mutual deviations

Embodiment 3: compare J ₀₂The positive chorded winding GJ of series motor ₀₂Series energy saving motor list

Model	Capacity	Number of poles	The groove number	Energy-conservation %
					GJ 02Series	3.0kw	2	24	5.6
4	36	8.7
			6	36			12
7.5kw	2	24						5.6
			4	36		8.7
	6	36					12
			10kw	2		24		5.6
4	36	8.7
				6		54	8.7
22kw	2	36						3.4
			4	36		8.7
	6	54					8.7

Because improved high-efficiency energy-saving motor adopts the mode of connection of positive chorded winding, Eliminate highter harmonic significantly, so the utlity model has following advantage:

1, starting current is little;

2, no-load current is low;

3, Oscillation Amplitude is little, and noise is low;

4, temperature rise descends;

5, energy-saving effect height;

6, power factor, high efficiency.

Claims (5)

1, a kind of on the basis of common three-phase winding motor improved energy-efficient sinusoidal winding motor, the connected mode that it is characterized in that positive chorded winding is extend-triangle and star triangle,

A, extend-triangle connect: respectively the triangular portions winding is connected into a triangle, star part winding connects into a star, then three tail heads of star winding are connected to three tops of delta windings, the first head of star are drawn be connected to power supply;

B, star triangle connect: respectively the triangular portion sub-winding is connected into a triangle, three of being connected into after the star star of star winding enter the top that head is connected on delta windings respectively, and star is partly drawn tap and is connected to power supply then.

2, energy-efficient sinusoidal winding motor according to claim 1 is characterized in that the every phase winding of star part is arranged to lag behind 30 ° of electrical degrees of triangular portions phase winding in stator slot.

3, energy-efficient sinusoidal winding motor according to claim 1 is characterized in that 120 ° of electrical degrees of the leg-of-mutton electromotive force mutually of extend-triangle and star mutual deviation.

4, energy-efficient sinusoidal winding motor according to claim 1, the every phase winding number of turn of triangular portions that it is characterized in that the extend-triangle connection are the star part

Doubly, every phase winding series conductor length is the star part

Doubly, triangle polyphone cross-sectional area of conductor is the star cross-sectional area of conductor of partly contacting

Doubly, the every phase resistance in triangle coupling part is 3 times of the every phase resistance of star part.

5, energy-efficient sinusoidal winding motor according to claim 1, the coefficient that it is characterized in that the star winding is 0.58-0.72.

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