Frequency conversion air conditioning inverter motherboard power supply

Y series best cast iron three phase induction motor
Specifications
1. 20 years manufacturing experience 
2. 12 months guarantee 
3. low noise and temperature rise 
4. high starting torque 

5. AC Voltage: 220V/380V, 380V/660V,400V/690V,220V/400V

Air-conditioning outdoor mainboard work power supplied with switching power supply, motherboard + 12 v and + 5 v power supply circuit. Mainly generator set spare parts for outdoor electrical relay (led outdoor power supply is no longer PTC but straight), fan control relay, four-way valve control relay to motor parts provide power supply. The main working voltage for outdoor CPU. Therefore, wholesalemotor.blogspot.com only the frequency conversion lamination power circuit of switching power supply work, to make the control of outdoor work, can maintain normal CPU communication between inside and outside the machine. 

The classification and characteristics of ac regulated power supply

Able to provide a stable voltage and frequency of power supply according to ac regulated power supply.At present most domestic manufacturers is the work done by ac voltage stability.Below the market some ac regulated power supply,the classification characteristics. motor vehicle spare parts Parameter adjustment (resonance):this kind of regulated power supply,voltage stability is the basic principle of LC series resonance,the early type of magnetic saturation voltage stabilizer is belong to this category.It has the advantage of simple structure,without many of the components,reliability is quite high ac electric motor voltage range is wide,strong anti-jamming and resistance to overload ability.The disadvantage is that large energy consumption,noise big,bulky and high cost.On the basis of the principle of magnetic saturation of development into the formation parameters voltage stabilizer and China have been popular in the 50 s of "magnetic amplifier gather digital ac voltage stabilizer" (614) are the principle of ac voltage stabilizer.Autoformer (than) gather: 1,mechanical pressure regulating type,i.e.,according to the servo motor to drive the carbon brushes in autotransformer winding sliding surface move,change Vo on the ratio of the Vi,in order to realize the adjustment of the output voltage and stability.

The voltage stabilizer can from several hundred to several kilowatts.It is characterized by simple structure,low cost,the output waveform distortion small; But because the carbon brush sliding contact are prone to edm,brush damage that burned and failure; Slow speed and voltage regulation.Type 2,change the tap,autotransformer to make multiple fixed tap,through a relay or SCR (SSR) as switch machine 10,automatically change the tap position,so as to realize the stability of output voltage.This type of circuit voltage regulator the method is simple,wide voltage stabilizing range (130 v to 280 v),high efficiency (95%) or higher,the price is low.While the disadvantage is that low voltage stabilizing precision (plus or minus 8 ~ 10%) working life is short,it is suitable for the family to the air conditioner power supply.Power voltage compensation type electrical motor - purifying type (including precise voltage stabilizer) it USES compensation link to realize the output voltage stability,easy to implement microcomputer control.It has the advantage of good anti-jamming performance,high precision voltage (+ / - 1%) or less,fast response (40 ~ 60 ms),simple circuit,reliable operation.

The disadvantage is that: with the computer,program-controlled switches,such as nonlinear load are low frequency oscillation phenomenon; Input side current distortion degree is big,the source power factor is low; The output voltage to input voltage phase shift.Against interference function to demand higher units,it is advisable to apply in the city,computer power supply,must choose the computer about 2 to 3 times the total power voltage regulator to use.Because has stabilized,anti-jamming,the advantages of fast response speed,moderate price,so widely used.Switching regulated power supply: it is applied to the high frequency pulse width modulation technology,and it is the difference between general switch power supply output must be with the input side of the same frequency and phase ac voltage.It had quasi square wave output voltage wave type,type of ladder wave,sine wave,etc.,in the market for uninterruptible power supply (UPS) from the storage power supplies and chargers,ac voltage regulator is a switch mode power supply voltage regulator and control function is strong,easy to realize intelligent,is a very promising ac regulated power supply.But because of its circuit www.facebook.com/dongfeng.motor is complex,the price is higher,so to promote more slowly.

The choice of single-phase capacitor electric mechanical and electrical capacity

The choice of single-phase capacitor small electric fan motor electric mechanical and electrical capacity Most of single-phase motor capacitor,such acmotor2.blogspot.com as washing machines,electric fans,submersible pump,small woodworking planer,etc.But due to capacitor spoiled or improper selection capacity,Motor running temperature,noise,power consumption increases,the speed is reduced,the phenomenon such as torque decreases,here the selection of electrical and mechanical capacity of the capacitor motor approach to electricity Work friends can do a introduction,for your reference. Calculation method 1:Single-phase capacitor electric mechanical and electrical capacity depends on the size of the deputy winding current.

Because of different sizes,single phase motor power to consider when choosing capacitance rev Dynamic torque,speed,temperature,noise and loss should be within the normal range.So first of all should from the nameplate detect single-phase motor power,calculate the primary winding of the electricity Flow,and then according to the primary winding current (0.5 0.7) times to perkins diesel generator setcalculate the current value of each winding current,according to the formula C = IC * 10 divided by 2 PI fVo.The formula of the I I = P = V is obtained. 2: the selection of capacitor Single-phase capacitor motor should first choose oil-immersed capacitor,pressure value should be above 400 v.Second optional www.facebook.com/guohong.trading ac

electrolytic capacitor,its small size,low prices,but life Life is a bit short.

Three-phase asynchronous motor speed and voltage have a relationship

Simple from the formula,the rotational speed of rotating speed and voltage are theoretically

acmotortrading.blogspot.com has nothing to do,in fact change the applied voltage is affect the speed of the motor.The following description can electric motors 12 volt help understand the asynchronous motor revolutions formula n = 60 f/p * (1-s) p-logarithm,s-slip Speed regulation method 1.Change the frequency of the power supply (2) pole change motor logarithmic 5kw permanent magnet generator 3.Change the slip.Slip changes can be made of the following measures to achieve 1.2.Change the applied voltage in mini electric motor the rotor circuit introduction plus resistance (3) the introduction of additional potential in the rotor circuit.

High efficiency motor energy saving effect is remarkable Huge market upside

Efficient motor is refers to the general standard motor has high efficiency.Efficient motor using new motor design,new technology and new materials,by reducing the wastage of the electromagnetic energy,heat energy and mechanical energy,improve the output efficiency.Compared with the standard motor,motor using efficient energy-saving effect is very obvious,normally efficiency can be increased by 4% on average.Figures show that China's industrial production of energy waste is serious,the motor power consumption accounts for 64% of the total electricity consumption in our country,based on the analysis of domestic motor application,most still ac electric motor is given priority to with ordinary motor,represented by efficient motor energy saving products market space is huge.Efficient motor is refers to the general standard motor has high efficiency.Efficient motor using new motor design,new technology and new materials,by reducing the wastage of the electromagnetic energy,heat energy and mechanical energy,improve the output efficiency.Compared with the standard motor,motor using efficient energy-saving effect is very obvious,normally efficiency can be increased by 4% on average.

Statistics show that's about 1.7 billion kilowatts,annual power consumption of about 3 trillion KWH,motor power consumption accounted for 64% of China's total power consumption,industrial electricity 75% efficient motor in domestic existing stock motor proportion less than 5%,the production of high efficiency motors are mainly sold to electric motorforeign countries.At the same time,the application of highly efficient motor in China at present is only 23% ~ 23%.Although our country in 2008 will be included in motor system energy saving country one of the ten major energy conservation projects,www.dongfeng- motor.com 2009 also include high efficiency,super efficient motor application in huimin engineering,June 2,2010,according to the notice will be highly efficient motor in energy-saving products huimin project scope,make efficient motor marketing focus.Embarrassing situation is that the high efficient motor has promotion on the market for many years,high efficiency motor has not fully integrated into the market,at present efficient motor proportion is still relatively low.Efficient motor research and development in our country basic keep pace with the international level,the technical progress in recent years,very optimistic,especially on the motor efficiency and abroad there is no difference.

But it is a pity that our country produce IE3 motors domestic application of too little,most for export.Domestic well-known motor expert member of ren-yuan tang said.Statistics from the ministry of industry and information technology,according to the current domestic with motor in efficient accounted for only about 5%.To solve the problem of efficient motor in domestic promotion difficult,China's government departments to the New Deal is constantly,in order to promote the development of industry.Energy efficiency standards 2012 China once in order to speed up the promotion of high efficiency motor,organized to GB18613-2006 "the small and medium-sized three-phase asynchronous motor limited value of energy efficiency and energy efficiency rating" revision,completed by China standardization institute and other units of the new GB18613-2012 "the small and medium-sized three-phase asynchronous motor limited value of energy efficiency and energy efficiency rating" countries have released in May 2012,and on September 1,2012.

After implementation,the standard of energy efficiency products will be banned from production,sales of

imports."2013 special action plan for energy saving and green industrial development from the miit on

IE2/IE3 electric motor March 26,issued by the 2013 industrial energy saving and green development action plan for special notice,in 2013 will focus on promoting the implementation of motor efficiency under special plans.: special action to implement goals so as to realize the national industrial power saving 1% (30 billion degrees),explore the development patterns and industrial energy saving and green,implementation to point with surface,drive the industrial energy saving and comprehensive utilization of the whole work progress.In 2013,according to plan,miit will from the promotion of efficient motor,eliminate inefficiencies and both the motor system energy saving technical reconstruction in six aspects,such as promotion,elimination and 100 million kw motor and motor system,the reform more efficient motor market,promote the motor product upgrading and industrial upgrading.

Motor temperature rise too high or winding burned

The number of positive &negative too ordinary,often make the motor work under launch condition,often cause temperature rise too high,and even burn winding.Common three phase induction motor reasons: being driven mechanical acmotortrading.blogspot.com card master,ambient temperature is too high,the belt too loose or too tight,the electromagnetic part of fault,the power supply voltage is too high,too low,the gap between the end of the motor coil and single phase capacitor start induction motor iron core vent plug,220v acelectric motors fan leaf damage,etc.

lamination electric motor spare parts

In recent years,rope machine mechanical industry developing rapidly,rope machinery manufacturing

enterprises in China has developed quite rapidly,large and small enterprises has arisen.Rope

machinery development will bring many convenience to people's life.In today's society,is suitable for

processing a sword hemp fibers as raw material of rope machine,also suitable for processing with

other natural fiber or synthetic fiber as raw material of rope machine,for the people acmotortrading.blogspot.com has greatly increased the production efficiency.Rope machine,including the frame and installed on the base of the conveying mechanism,closing mechanism,motivation mechanism,conveying mechanism by central axis,synchronous transmission gear train no.1,left,right,square plate and arrangement between left and right square frame board four line tray,closing mechanism by the rope,accept,pendulum string axis,one traction rope shaft axis,the no.2 traction axis,horizontal bevel gear,shaft bevel gear,bearing,bearing right and left 2 synchronous transmission gear train,dynamic mechanism is composed of motor and pulley drive,motor to drive through the belt pulley,deputy and number one and number two synchronous transmission gear train connection,a synchronous transmission gear train drive conveying mechanism to complete the pay-off.

2 synchronous transmission gear train drive the closing mechanism complete the rope and the rope,the fully automatic rope machine,automatic line,the machine can produce two strands of rope,rope three or four strands of rope,high production efficiency,product quality is good,save time,save work,and effort.Rope of the necessary conditions Explain when we are in use today or should pay attention to about the rope mechanical conditions: 1,the first rope machine model according to the class,type classification principle.In block letters with Chinese pinyin "said class of rope machine,model code,if there are repeated,expressed by two typical Chinese pinyin",expressed in the main parameters of generator parts stator rope machine structural characteristics.This kind of product is behind the main parameters of filling series,the main parameters and the serial number with a dash between links. 2,the design of rope machine should conform to the technical requirements of rope process,rational layout,elegant shape,6v electric motor reliable performance,simple operation,designed so that it would be easy to repair when failure occurs,can improve the high seriation,generalization and standardization level,rope machine should be in accordance with the prescribed procedures approval of drawings and technical documents manufacturing; 3,rope machine power and control devices and to ensure that basic performance of rope machine accessories and the use of special tools shall be issued by factory to install,and then supply. 4,the last rope machine should not have the appearance of the surface pattern without obvious bulge,sag,rough and other damage defects,such as rope machine lacquer layer should be uniform color,as long as after reaching the above basic conditions,rope machine can use better.

General electrical engineer to summarize the influence of frequency converter for motor

1 the efficiency of the motor and the problem of temperature rise In either in the form of a

frequency converter, both in the operation of the different degree of harmonic voltage and current,

make the motor in non-sinusoidal voltage, power flow operation. At the current widespread use of sine wave type PWM inverter as an example, the basic is zero, the low-order harmonic larger than the rest of the 220v electric motor carrier frequency times the left and right sides of

higher harmonic components as: 2 u + 1 (u for modulation ratio). Can lead to higher harmonic motor stator copper loss, rotor copper loss, iron loss and the increase of the additional loss, the most significant is the rotor copper loss; For asynchronous motor is close to the base wave frequency corresponds to the synchronous speed of rotation, therefore, higher harmonic voltage to a larger slip cutting rotor after conducting bar, will produce very big rotor loss; In addition, also should be considered because of skin effect produced by the additional copper loss. These losses will make motor extra heat, low efficiency, output power decreases, and such as ordinary motor running in the inverter output non-sinusoidal power supply conditions, the general temperature will increase 10% to 20%. 

2 motor insulation strength problem At present middle and small converter, many are using the

PWM control mode. It's about several thousand to more than 10 KHZ carrier frequency, which makes the

motor stator winding to withstand high voltage build-up rate, equivalent to impose great impulse

voltage gradient on motor, the motor of the turn-to-turn insulation withstand more ordeal. In

addition, the rectangular produced by PWM inverter chopper superposition of impulse voltage on the

motor operating voltage, which not only high peak and the high frequency impulse voltage, would pose

a threat to the electric motor 12v 500w insulation of the motor, to ground

insulation under the repeated impact of high pressure can accelerate ageing. 3 harmonic

electromagnetic noise and vibration Ordinary motor using frequency inverter power supply, can make the electromagnetic, mechanical, ventilation and other factors caused by the vibration and noise

becomes more complicated. Frequency conversion power harmonic and motor electromagnetic part contains all of the time the inherent space harmonic interference each other and form all kinds of

electromagnetic vibration force. When the electromagnetic wave frequency and motor of the body's natural vibration frequency is consistent or close to, will produce resonance phenomenon, so as to increase the noise. Due to the motor operating frequency range wide, wide speed change range, all

kinds of the electromagnetic wave frequency is difficult to avoid the components of the motor of the

inherent vibration frequency. 

Four shaft voltage increase Shaft voltage refers ac motor to two axes voltage or voltage between shaft and shaft, for motor frequency conversion power supply, usually on each phase voltage on the motor is balanced, however, because each phase rectifier components and control components differences in features, may be a momentary voltage imbalance, produced in the shaft larger shaft voltage; Combined with the harmonic voltage on the rotor will be bearing oil film as medium to form a earth capacitance, producing a capacitive current; The current flows through the oil film between shaft and bush, if critical lubrication condition, the oil film will be destroyed, there will be a large current flows through the oil film, thus shortening bearing alloy, bearing life or damage to the accident. 5 motor for frequent starting and braking ability to adapt As a result of the inverter power supply, motor can under low frequency and voltage start, in the form of no impact current and frequency converter is available for braking modes of the brake quickly, create conditions for the realization of the frequent starting and braking, and the

mechanical system and electromagnetic system of the motor is in circulation under the action of

alternating force, brings to the mechanical structure and insulation structure fatigue and

accelerated aging problem. 6 low-speed cooling problems First of all, the impedance of the

asynchronous motor is not ideal, when power frequency is low, the power loss caused by high order

harmonic. Second, general motors in speed decreases, current and magnetic flux basic keep

inconvenience, but the cooling air volume and speed of three proportional to reduce, cause the low

speed of a motor cooling conditions deteriorate, a sharp increase in temperature is difficult to

realize the constant torque output. General electrical engineer pointed out that, in view of the

above issues ahead of protective 8500w gasoline generator measures to prolong the

service life of click.