CN105337555B - Single-phase bulky capacitor operation of electrically driven machine - Google Patents
Single-phase bulky capacitor operation of electrically driven machine Download PDFInfo
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- CN105337555B CN105337555B CN201410413555.9A CN201410413555A CN105337555B CN 105337555 B CN105337555 B CN 105337555B CN 201410413555 A CN201410413555 A CN 201410413555A CN 105337555 B CN105337555 B CN 105337555B
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Abstract
The present invention relates to a kind of single-phase bulky capacitor operation of electrically driven machines, it includes main winding (21), auxiliary winding (22) and the first operation capacitor (23), main winding (21) is connected with auxiliary winding (22), first operation capacitor (23) is connected in parallel on the both ends of main winding (21), main winding (21) and auxiliary winding (22) are respectively used to be connected to the both ends of power supply (24), the capacitance C of first operation capacitor (23) is determined by following formula: C=C1*a, a is constant and value range is 3~7, C1 is the capacitance of the second operation capacitor of single phase capacitor operating type motor.Above-mentioned single-phase bulky capacitor operation of electrically driven machine, pass through major-minor windings in series, operation capacitor is connected in parallel on the both ends of main winding and the capacitance of operation capacitor is determined by above-mentioned formula, so that the capacitance of operation capacitor increases, the role of the operation capacitor while dynamic condenser of bearing the responsibility, and then in the case where the starting torque of the single-phase bulky capacitor operation of electrically driven machine of guarantee is big, above-mentioned single-phase bulky capacitor operation of electrically driven machine structure is simple and at low cost.
Description
Technical field
The present invention relates to a kind of motor, especially a kind of single-phase bulky capacitor operation of electrically driven machine.
Background technique
Currently, single phase capacitor operating type motor needs starting torque big, then need to start capacitance also big, and transport
Row capacitance is excessive, and motor working current will be excessive, and motor is made to can not work normally or even burn motor, so motor rises
It is dynamic to use a capacitor with operation.Under this technical contradiction, people solve this frequently with two value capacitor motor
One problem, but two value capacitor motor needs centrifugal switch, and centrifugal switch failure is more, structure is complicated, at high cost.
Summary of the invention
Based on this, it is necessary to provide a kind of structure simple and at low cost single-phase bulky capacitor operation of electrically driven machine.
A kind of single-phase bulky capacitor operation of electrically driven machine comprising main winding (21), auxiliary winding (22) and the first operation capacitor
(23), which connects with the auxiliary winding (22), which is connected in parallel on the two of the main winding (21)
End, the main winding (21) and the auxiliary winding (22) are respectively used to be connected to the both ends of power supply (24), first operation capacitor (23)
Capacitance C determined by following formula: C=C1*a, a be constant and value range be 3~7, C1 be single phase capacitor operating type electricity
The capacitance of second operation capacitor (13) of motivation.
In one of the embodiments, when the voltage at the single-phase bulky capacitor operation of electrically driven machine both ends is 380V, the value of a
Range is 3~4.
In one of the embodiments, when the voltage at the single-phase bulky capacitor operation of electrically driven machine both ends is 220V, the value of a
Range is 5~7.
The number of turns ratio of the main winding (21) and the auxiliary winding (22) is 1:1.2~1 in one of the embodiments:
1.4。
The number of turns ratio of the main winding (21) and the auxiliary winding (22) is 1:1.3 in one of the embodiments,.
The coil of the main winding (21) is 130 circles in one of the embodiments, and the coil of the auxiliary winding (22) is 168
Circle.
First node is formed after the main winding (21) is in parallel with first operation capacitor (23) in one of the embodiments,
(25) and second node (26), the first node (25) are used to be connected to one end of the power supply (24), and the second node (26) is even
It is connected to one end of the auxiliary winding (22), the other end of the auxiliary winding (22) is used to be connected to the other end of the power supply (24).
C1=120000*I/2P*F*U*COS ω in one of the embodiments, wherein I is the single phase capacitor operating type
The electric current of motor, 2P are constant, and F is supply frequency, and U is the voltage at the single phase capacitor operating type motor both ends, and COS ω is
Power factor.
Above-mentioned single-phase bulky capacitor operation of electrically driven machine runs the both ends that capacitor is connected in parallel on main winding by major-minor windings in series
And the capacitance for running capacitor is determined by above-mentioned formula, so that the capacitance of operation capacitor increases, which takes on simultaneously
The role of dynamic condenser is played, and then compares single phase capacitor operating type motor in the starting torque of the single-phase bulky capacitor operation of electrically driven machine of guarantee
Starting torque it is big in the case where；Structure is simple and at low cost for opposite two value capacitor motor.
Detailed description of the invention
By being more particularly described for the preferred embodiment of the present invention shown in the drawings, above and other mesh of the invention
, feature and advantage will become more fully apparent.Identical appended drawing reference indicates identical part in all the attached drawings, with emphasis on
In showing the gist of the present invention.
Fig. 1 is the circuit diagram for the single-phase bulky capacitor operation of electrically driven machine that embodiment provides.
Fig. 2 is the circuit diagram that motor is compared used in embodiment.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
Referring to Fig. 1, the single-phase bulky capacitor operation of electrically driven machine 20 that embodiment provides includes main winding 21, auxiliary winding 22 and fortune
Row capacitor 23.
The main winding 21 is connected with the auxiliary winding 22, which is connected in parallel on the both ends of the main winding 21, the master around
Group 21 and the auxiliary winding 22 are respectively used to be connected to the both ends of power supply 24.Specifically, the main winding 21 and the operation capacitor 23 be simultaneously
First node 25 and second node 26 are respectively formed after connection, which is used to be connected to one end of the power supply 24, this
Two nodes 26 are connected to one end of the auxiliary winding 22, and the other end of the auxiliary winding 22 is used to be connected to the other end of the power supply 24.
The capacitance C of the operation capacitor 23 is determined by following formula: C=C1*a, wherein a is constant and value range is 3
~7.C1 is the capacitance of the operation capacitor 13 of single phase capacitor operating type motor (incorporated by reference to Fig. 2).The so-called list of the present embodiment
Phase capacitance-run motor is the motor being formed by connecting using circuit diagram as shown in Figure 2.The single-phase capacitor running
Formula motor includes the capacitor 13 that capacitance is C1, main winding 11 and auxiliary winding 12.Wherein, C1=120000*I/2P*F*U*
COS ω, wherein I is the electric current of the single phase capacitor operating type motor, and 2P is constant, and F is supply frequency, and U is the single-phase capacitance
The voltage at operating type motor both ends, COS ω are power factor.
Above-mentioned single-phase bulky capacitor operation of electrically driven machine 20 is connected by major-minor winding 21,22, operation capacitor 23 be connected in parallel on it is main around
The capacitance for organizing 21 both ends and operation capacitor 23 is determined by above-mentioned formula, so that the capacitance of operation capacitor 23 increases, the fortune
The role of row capacitor 23 while dynamic condenser of bearing the responsibility, and then in the starting torque for ensureing single-phase bulky capacitor operation of electrically driven machine 20 than single
In the case that the starting torque of phase capacitance-run motor is big, structure is simple for two value capacitor motor and cost
It is low.
Below by way of illustrating that the motor 20 of embodiment (calls in the following text pair than single phase capacitor operating type motor by way of contrast
Than motor) superiority in performance.It should be pointed out that for convenience of explanation, applicant is using self-control dynamometer machine to right
Parameter measurement is carried out than motor and the motor of embodiment 20.Self-control dynamometer machine is to be exclusively used in measuring the big of power plant power
The starting torque size of small and motor and what oneself manufactured and designed.The main operational principle of self-control dynamometer machine is: defeated from power supply
Entering direct current, electric current generates the excitation of dynamometer machine, and under the dragging of tested power-equipment, dynamometer machine excitation magnetic force generates negative moment,
Exciting current appropriate is inputted, the negative moment with the power relative equilibrium of tested power-equipment is can produce, at this moment inputs measurement of power
The size of the exciting current of machine can represent the size of tested power-equipment shaft power, thus method can power scale, electric motor starting
Torque etc. parameter.It is 35 degrees Celsius that parameters in following table, which are all making dynamometer machine and tested motor by oneself in temperature,
In the environment of measure gained, the variation of temperature can cause parameter to be varied, but the not comparison of affecting parameters result.It can manage
Solution can also be used other types of dynamometer machine and carry out under the conditions of to power-equipment in practical applications, and the measurement of function compares.
Comparative example 1
Using the extremely former dedicated capacitance-run motor of water pump using voltage 220V in 750W, 2, (motor can be from market
Buy) as objective for implementation 1.The stator main winding lead of the motor is red, and auxiliary winding lead is yellow, and main winding is secondary
Oneself is concatenated line to winding inside motor casing, and common lead is green.Red, yellow and green totally 3 leads.
Capacitor 13 is accessed into objective for implementation 1 according to the circuit diagram of Fig. 2 and obtains comparison motor 1, it is electronic comparing
In machine 1, the capacitance C1 of capacitor 13 is 20 μ F (original capacitance), U=220V.Comparison motor 1 operates after connecting with the mains, and surveys
Obtain 1 operating parameter of comparison motor such as the following table 1.
Capacitor 23 is accessed into objective for implementation 1 according to the circuit diagram of Fig. 1 and obtains the motor of the present embodiment, in this reality
It applies in the motor of example, the voltage at the single-phase bulky capacitor operation of electrically driven machine both ends is 380V, and the value range of a is 3~4.At this
In comparative example 1, preferably, a=4, therefore, the capacitance C of capacitor 23 is 20*4=80 μ F, that is to say the 4 of 13 capacitance of capacitor
Times.The motor 20 of the present embodiment operates after connecting with the mains, and measures 20 operating parameter of the present embodiment motor such as the following table 1:
Table 1
The project name of upper table 1 is described as follows:
Voltage: the voltage at motor both ends；
Electric current 1: motor input current；
Apparent energy: motor consumes visual power；
Electric current 2: when motor load, the exciting current of dynamometer machine；
Efficiency ratio: the every input 1A DC excitation electric current of dynamometer machine will consume the ratio of electronic electric power；
Survey revolving speed: the revolving speed surveyed when motor full load；
Capacitance: required capacitance (capacitance when including starting) when motor running；
Electric current 3: before motor unstart, first inputting a certain amount of exciting current to dynamometer machine, then start motor, electricity
The exciting current for the limited maximum input that motivation can start.Electric current 3 is bigger, and the starting torque for representing motor is bigger.
It should be pointed out that the objective for implementation 1 is that water pump is dedicated, main winding and auxiliary winding have been connected in inside, outside
Terminals can not change motor steering, so the direction of rotation of comparison motor 1 and 20 direction of rotation phase of the present embodiment motor
Instead, but not the parameter measurement of this comparative example 1 is hindered.
Comparative example 2
Using the extremely former capacitor start capacitance operation diadic motor using 220V voltage in 1.5KW, 2, (motor can be from
Market is bought) it is used as objective for implementation 2.The stator main winding lead of the motor is 2 red lines, and auxiliary winding lead is 2 black
Colo(u)r streak, it is 2 yellow lines that centrifugal switch, which controls lead, shares 6 leads.Since the present invention does not need centrifugal switch, so 2
Yellow line and a dynamic condenser not need to access circuit.
Capacitor 13 is accessed into objective for implementation 2 according to the circuit diagram of Fig. 2 and obtains comparison motor 2, it is electronic comparing
In machine 2, the capacitance C1=35 μ F (original capacitance) of capacitor 13, U=220V.Comparison motor 2 operates after connecting with the mains, and surveys
Obtain 2 operating parameter of comparison motor such as the following table 2.
Capacitor 23 is accessed into objective for implementation 2 according to the circuit diagram of Fig. 1 and obtains the motor 20 of the present embodiment, at this
In the motor 20 of embodiment, the voltage at the single-phase bulky capacitor operation of electrically driven machine both ends is 380V, and the value range of a is 3~4.
In this comparative example 2, preferably, a=3.8, therefore, the capacitance C=35*3.8=135 μ F of capacitor 23 that is to say capacitor 13
3.8 times of capacitance.The motor of the present embodiment operates after connecting with the mains, and measures the motor 20 of the present embodiment such as the following table 2
Operating parameter.
Table 2
The project name of upper table 2 illustrates the project name explanation that please join table 1.
The apparent energy, efficiency of the motor 20 of the present embodiment, which are when surveyed, it can be seen from the above comparative example 1 and 2 turns
The operating parameters such as speed when survey the operating parameters such as revolving speed close to identical, especially with apparent energy, the efficiency of comparison motor
On actual measurement revolving speed, the motor 20 of the present embodiment is bigger than comparison motor, and the electric current 3 of the motor 20 of the present embodiment compares
The big even several times more than 60% of electric current 3 of motor are compared, this shows the starting torque increase of the motor 20 of the present embodiment, property
Can be better than comparison motor, while using 20 smooth running of motor and low noise of the present embodiment of big operation capacitor.
Comparative example 3
Applicant oneself designs 1.2KW, 2 poles, the single-phase bulky capacitor operation of electrically driven machine using 220V power supply.Related design ginseng
Number is described as follows: complete machine shell, stator core, rotor are all to use 1.5KW two value capacitor motor original-pack, and stator winding is whole more
It changes.24 slot of number of stator slots, major-minor umber of turn ratio is 1:1.2~1:1.4, in this comparative example 3, preferably, major-minor winding turns
Number ratios are 1:1.3,130 circle coil of main winding, 168 circle coil of auxiliary winding, and compare motor 2 (1.5KW, 2 pole 220V voltages
Two value capacitor motor) main winding be 240 circles, auxiliary winding is 236 circles, and turn ratio is about 1:1, and main winding and auxiliary winding total number of turns
(476 circle) is greater than self-designed single-phase bulky capacitor operation of electrically driven machine total number of turns (298 circle).The single-phase bulky capacitor of the present embodiment is transported
Turn the winding wiring method of motor with the wiring method with 1.5KW, 2 pole 220V voltage two value capacitor motors.With line line footpath:
Main winding 0.85 square millimeter 2, two-wire coiling, auxiliary winding 0.85 square millimeter 1,1 square millimeter of 1 two-wire coiling.This
Circuit connecting method such as Fig. 1 of the motor 20 of embodiment, main winding 21 are connected with auxiliary winding 22, and operation capacitor 23 is connected in parallel on master
21 both ends of winding, one end of main winding 21 and one end of auxiliary winding 22 are connected to 220V power supply line both ends.Since this is single-phase
The voltage at bulky capacitor operation of electrically driven machine both ends is 220V, therefore the value range of a is 5~7, in this comparative example 3, preferably, a=
5.7.Therefore the capacitance C=35*5.7=200 μ F of capacitor 23, as the 5.7 of capacitor C13 capacitance times.The present embodiment it is electronic
Machine 20 operates after connecting with the mains, and measures 20 operating parameter of motor of the present embodiment such as the following table 3.
Table 3
| Project name | The present embodiment motor | Compare motor 2 |
| Voltage (U) | 220V | 220V |
| Electric current 1 (I) | 7.9A | 9.58A |
| Apparent energy | 1738W | 2107W |
| Electric current 2 | 1.96A | 2.27A |
| Efficiency ratio | 886W/A | 928W/A |
| Survey revolving speed | 2880 revs/min | 2840 revs/min |
| Run capacitor | 200μF | 35μF |
| Electric current 3 | 0.7A | 0.2A |
By upper table 3 it is found that the actual measurement revolving speed of the actual measurement rotating ratio comparison motor 2 of the motor 20 of the present embodiment is high, and
For the electric current 3 of the motor of the present embodiment but than 3 big two times of electric current or more of comparison motor, this shows the motor of the present embodiment
20 starting torque increases, and performance is transported better than comparison motor, while using the motor 20 of the present embodiment of big operation capacitor
Turn steady and low noise.Meanwhile in the comparative example 3, the motor 20 of the present embodiment uses the supply voltage of 220V, so that this
The application range of the motor 20 of embodiment is more extensive.
Can be seen that implementation the technical program by above 3 comparative examples has 2 kinds of technological means (method) feasible.First
Kind technological means: increase the capacitance of operation capacitor, while increasing supply voltage, this point is illustrated by comparative example 1 and 2.Second
Kind technological means: increase the capacitance of operation capacitor, do not increase supply voltage, then major-minor winding total number of turns is reduced, by comparative example 3
Illustrate this point.
The embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not be because
This and be interpreted as limitations on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art,
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (1)
1. a kind of single-phase bulky capacitor operation of electrically driven machine, which is characterized in that it includes main winding (21), auxiliary winding (22) and the first fortune
Row capacitor (23), the main winding (21) are connected with the auxiliary winding (22), which is connected in parallel on the main winding
(21) both ends, the main winding (21) and the auxiliary winding (22) are respectively used to be connected to the both ends of power supply (24), first operation
The capacitance C of capacitor (23) is determined by following formula: C=C1*a, a are constant and value range be 3~7, C1 is single-phase capacitance
The capacitance of second operation capacitor (13) of operating type motor；When the voltage at the single-phase bulky capacitor operation of electrically driven machine both ends is
When 380V, the value range of a is 3~4；When the voltage at the single-phase bulky capacitor operation of electrically driven machine both ends is 220V, the value model of a
Enclose is 5~7；The number of turns ratio of the main winding (21) and the auxiliary winding (22) is 1:1.3；The coil of the main winding (21) is 130
Circle, the coil of the auxiliary winding (22) are 168 circles；First segment is formed after the main winding (21) is in parallel with first operation capacitor (23)
Point (25) and second node (26), the first node (25) are used to be connected to one end of the power supply (24), the second node (26)
It is connected to one end of the auxiliary winding (22), the other end of the auxiliary winding (22) is used to be connected to the other end of the power supply (24)；C1
=120000*I/2P*F*U*COS ω, wherein I is the electric current of the single phase capacitor operating type motor, and 2P is constant, and F is power supply
Frequency, U are the voltage at the single phase capacitor operating type motor both ends, and COS ω is power factor.
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| CN201410413555.9A CN105337555B (en) | 2014-08-11 | 2014-08-20 | Single-phase bulky capacitor operation of electrically driven machine |
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| CN201410413555.9A CN105337555B (en) | 2014-08-11 | 2014-08-20 | Single-phase bulky capacitor operation of electrically driven machine |
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| CN105634226A (en) * | 2016-03-02 | 2016-06-01 | 江门日野电机有限公司 | Single-phase capacitor motor, capacitor device and driven oil pump and gate |
| CN107017748A (en) * | 2017-05-24 | 2017-08-04 | 福安市伊莱特电机有限公司 | Monophase machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780344A (en) * | 2012-08-17 | 2012-11-14 | 张湘明 | Single-phase capacitor running asynchronous motor |
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| KR100498302B1 (en) * | 2000-12-27 | 2005-07-01 | 엘지전자 주식회사 | Copacity variable motor for linear compressor |
| DE602005017970D1 (en) * | 2004-04-24 | 2010-01-14 | Lg Electronics Inc | Variable speed motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780344A (en) * | 2012-08-17 | 2012-11-14 | 张湘明 | Single-phase capacitor running asynchronous motor |
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| Title |
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| 电容运转电动机电容量的选取;沈明元;《电工技术》;19961111;第54-56页 |
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