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Many users do not know what is the difference between synchronous motor and asynchronous motor in frequency conversion speed regulation. Today, JINJIU Motor will take you to learn it, hoping to help friends in need. 1. Frequency control of synchronous motor (1) The rotor of the synchronous frequency conversion speed regulating motor has the same DC poles as the stator winding poles. After the motor is started, the motor is transferred to normal operation, and the stator rotating magnetic field drives the rotor to perform synchronous operation. At this time, the motor speed is based on The number of poles of the motor and the input power frequency of the motor form a strict correspondence, and the speed is not affected by the load and other factors. (2) Due to the strict correspondence between the speed of the motor and the power frequency, the speed accuracy of the motor mainly depends on the accuracy of the output power frequency of the inverter, and the control system is simple. The rotation speed is consistent, and no expensive optical encoder is needed for closed-loop control. (3) An independent forced cooling fan is added to the synchronous frequency conversion speed regulation motor to adapt to the efficient heat dissipation of the motor at low speed and reduce the wind friction of the motor at high speed. 2. Frequency control of asynchronous motor (1) Asynchronous frequency conversion motor is derived from ordinary asynchronous motor. Due to adapting to the characteristics of the output power of the inverter, the motor has made great changes in the rotor slot shape, insulation process, electromagnetic design check, etc., especially Ventilation and heat dissipation of the motor. In general, an independent forced cooling fan is added to adapt to the efficient heat dissipation of the motor at low speed and reduce the wind friction of the motor at high speed. (2) The output of the inverter generally shows the output frequency of the power supply, and the speed output is displayed as the calculated number of poles of the motor and the output frequency of the power supply, which is very different from the actual speed of the asynchronous motor. (3) Since the slip rate of the asynchronous motor is determined by the manufacturing process of the motor, its dispersion is very large, and the load change directly affects the speed of the motor. To accurately control the speed of the motor, only a photoelectric encoder can be used for closed-loop control When the single machine is controlled, the accuracy of the speed is determined by the number of pulses of the encoder. When controlled by multiple machines, the speed of multiple motors cannot be strictly synchronized, which is determined by the asynchronous motor.

First, the advantages of DC motors 1. DC motor has good starting characteristics and speed regulation characteristics 2. The torque of the DC motor is relatively large 3. Maintenance is cheaper. 4. The DC of the DC motor is more energy-saving and environmentally friendly than ac. Second, the disadvantages of DC motors 1. DC motor manufacturing is more expensive 2. There is a carbon brush Third, the advantages of AC motors 1. AC motor is cheaper to manufacture. 2. The development of vector frequency conversion technology can already be simulated into direct current with frequency conversion motors 3. Compared with the DC motor, it has sufficient advantages in terms of simple structure, easy maintenance, low environmental requirements, energy saving and productivity improvement, so that AC speed regulation has been widely used in industrial and agricultural production, transportation, national defense and daily life. Fourth, the disadvantages of AC motors 1. The starting and speed regulation of the AC motor are poor AC motors can be divided into synchronous motors and asynchronous motors according to the speed. First, synchronous motor There are three main modes of operation of synchronous motors, namely as generators, motors and compensators. Running as a generator is the most important way of running a synchronous motor, and running as a motor is another important way of running a synchronous motor. The power factor of the synchronous motor can be adjusted, and the application of large synchronous motors can improve the operating efficiency in the absence of speed regulation. In recent years, small synchronous motors have begun to be more widely used in frequency conversion speed regulation systems. Synchronous motors can also be connected to the grid as synchronous compensators. At this time, the motor does not carry any mechanical load, and the inductive or capacitive reactive power required is sent to the grid by adjusting the excitation current in the rotor to achieve the purpose of improving the power factor of the power grid or adjusting the grid voltage. Second, asynchronous motor An asynchronous motor is an AC motor whose speed at load is not a constant ratio to the frequency of the connected grid. It also changes with the size of the load. The greater the load torque, the lower the speed of the rotor. Asynchronous motors include induction motors, doubly-fed asynchronous motors, and AC commutator motors. Induction motors are the most widely used, and without causing misunderstanding or confusion, induction motors can generally be called asynchronous motors. Advantages: simple structure, easy manufacturing, cheap price, easy to run. Disadvantages: power factor lag, light load power factor is low, speed regulation performance is slightly worse. Mainly for electric motors, generally do not do generators! Three-phase asynchronous motor is divided into cage type and winding type according to the rotor structure form; According to the shell structure, it can be divided into open type, protective type, closed type and explosion-proof type; According to the installation form, it can be divided into vertical and horizontal.

Exhibition name:IHE 2022 The name of the pavilion:Tehran International Permanent Fairground Exhibition hall address:Dr. Chamran Highway Tadjrish Tehran Iran exhibition has been successfully concluded, welcome friends from all walks of life to visit, guide and negotiate business.

Exhibition name:IHE 2022 The name of the pavilion:Tehran International Permanent Fairground Exhibition hall address:Dr. Chamran Highway Tadjrish Tehran Iran exhibition has been successfully concluded, welcome friends from all walks of life to visit, guide and negotiate business.

Hangzhou Jinjiu Electric Appliance Co., Ltd. website has been successfully upgraded, welcome to new customers to visit, we will do our best to serve you!

As the "big heart" of mechanical movement, the motor appears in our living environment all the time, such as shopping malls, office buildings, hotels, schools, hospitals and other places are inseparable from the auxiliary operation of the motor. With the rapid development of industry, the matching of motors in all walks of life is particularly important, that is, the motor is required to be high-precision, miniaturized, and low-speed. The advantages and disadvantages of high-precision motors mainly depend on the mechanical properties of the motor, and high-speed and accurate motor positioning technology is one of the conditions of many industrial controllers. In recent years, the electronics manufacturing industry has flourished, and the development of industrial machinery automation has become the trend of the future, so the requirements for motor motors with high accuracy related to mechanical movement have become more and more stringent. The motor miniaturization is a topic that has been discussed for a long time, in fact, the types of micro motors are more varied, which can be roughly divided into 13 categories, and the market application field is very extensive, and micro motors can be seen in all occasions where motor drives are needed. The manufacturing process of micromotors is quite complex, involving precision machinery, fine chemicals, magnetic material processing, insulation treatment and other process technologies. On the other hand, the general traditional motor is rotated at high speed, but at present, this high-speed traditional motor is difficult to meet the operating needs of various types of industrial equipment, if only this traditional motor, it can only be used with a huge deceleration mechanical structure equipment. This has caused problems such as cumbersome processes, time-consuming and laborious, and rising equipment maintenance costs, so the development of low-speed motors has become a matter of certainty. But it is not to say that the high-speed motor is at an absolute disadvantage, with the continuous emergence of new materials, the continuous improvement of the processing technology, the high-speed motor out of the original "stereotype", from the cancellation of the traditional deceleration mechanical structure equipment, the transmission efficiency has become higher, the noise has become smaller, and the operation has gradually become smaller by the load change.

The fan is a machine that relies on the input of mechanical energy to increase the gas pressure and discharge the gas, which is a kind of driven fluid machinery. Fan is the customary abbreviation of gas compression and gas delivery machinery in China .There are many categories, there are DC Fan Motor,blower,EC motor, wind turbine. Fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and ventilation of boilers and industrial furnaces; Cooling and ventilation in air conditioning equipment and household appliances; Drying and selection of grain, wind tunnel wind sources and inflating and propulsion of hovercraft, etc Jinjiu fans has high quality, low noise, long service life, centrifugal fan are mainly used in FFU air filter units and air purifiers External rotor axial fan and shaded pole motor can be used for refrigeration equipment and heater equipment such as condensers, radiators, evaporators, etc

Motor Definition: A motor is a device that realizes the conversion or transmission of electrical energy. Also known as (commonly known as a motor), it is represented in circuits by the letter "M" (the old Motor standard used "D"). Its main role is to generate drive torque as a power source for electrical appliances or various machinery. Generators are represented in the circuit by the letters "G" generator. Its main role is to use mechanical energy into electrical energy, the most commonly used is, water energy and so on to promote the generator rotor to generate electricity, with the maturity of wind power generation technology, wind power is also slowly entering our lives. transformer), which is called a stationary motor in some books. From the definition of the motor, it is also true to say so.

Our factory covers an area of about 10,000 square meters, has an annual production capacity of 2 million motors and fans, and has a history of 16 years of motor production. Scientific quality management system and professionally customized automatic production equipment ensure reliable product performance. Excellent quality comes from professionalism, we use excellent quality and reasonable price to serve customers. The integrity, strength and product quality of Hangzhou Jinjiu Electric Appliance Co., Ltd. have been recognized by the industry.

1. According to the type of working power supply: it can be divided into DC motor and AC motor. 1) DC motor can be divided according to structure and working principle: brushless DC motor and brushed DC motor. Brushed DC motors can be divided into: permanent magnet DC motors and electromagnetic DC motors. Electromagnetic DC motor division: series excitation DC motor, parallel excitation DC motor, other excitation DC motor and compound excitation DC motor. Permanent magnet DC motor division: rare earth permanent magnet DC motor, ferrite permanent magnet DC motor and aluminum nickel cobalt permanent magnet DC motor. 2) Among them, THE AC motor can also be divided into: single-phase motor and three-phase motor. 2,.according to the structure and working principle can be divided: can be divided into DC motor, asynchronous motor, synchronous motor. 1) Synchronous motor can be divided into: permanent magnet synchronous motor, magnetoresistive synchronous motor and hysteresis synchronous motor. 2) Asynchronous motor can be divided into induction motor and AC commutator motor. Induction motors can be divided into three-phase asynchronous motors, single-phase asynchronous motors and shaded-pole asynchronous motors. AC commutator motors can be divided into: single-phase series excitation motors, AC-DC dual-purpose motors and push-repulsion motors. 3. According to the starting and operating mode, it can be divided: capacitor starting single-phase asynchronous motor, capacitive running single-phase asynchronous motor, capacitive starting single-phase asynchronous motor and split-phase single-phase asynchronous motor. 4. According to the use, it can be divided: drive motor and control motor. 1) The drive motor can be divided into: electric tools (including drilling, polishing, polishing, slotting, cutting, reaming and other tools) with motors, home appliances (including washing machines, electric fans, refrigerators, air conditioners, tape recorders, video recorders, VIDEO DISC players, vacuum cleaners, cameras, hair dryers, electric shavers, etc.) with motors and other general small mechanical equipment (including various small machine tools, small machinery, medical equipment, electronic instruments, etc.) with motors. 2) The control motor is divided into stepper motors and servo motors. 5. According to the structure of the rotor, it can be divided: cage induction motor (the old standard is called squirrel cage asynchronous motor) and winding rotor induction motor (the old standard is called winding type asynchronous motor).

In the case of energy conservation and emission reduction in the world, high-efficiency and environmental protection and energy-saving motors have become the consensus of the world's motor industry development planning. The motor industry chain as a green environmental protection, new energy technology, new energy vehicles, high-end equipment manufacturing and processing manufacturing industry plug-in industrial chain, must be fully supported by the new national policy, coupled with the continuous improvement of the use of motors in industrial production, and its brushless DC motor in HVAC, cars and consumer electronics application of popularity, the sales market will be improved, the future of everyone's demand for brushless DC motors will gradually increase

Motor is a kind of mechanical equipment that is more common in everyone's daily life, the motor as the key equipment for energy conversion of mechanical and electrical engineering, is the basic component of electrical transmission, the main use is extensive, the product types are many, the specifications and models are complex, and its product characteristics are decided that the market concentration of the industrial chain is not high, the manufacturing enterprises and the segmentation areas involved are more, and there is no significant regularity, regionality, and periodicity. So do you know which field the motor is the source of power? In fact, through the interaction of electricity and magnetism, the conversion between electrical energy and kinetic energy is realized. Motors in the narrow sense mainly refer to electric motors, and in a broad sense, they can include motors and generators. Therefore, in life, the motor we are talking about mainly refers to the motor.

Hangzhou Jinjiu Electric Appliance Co., Ltd. (formerly Hangzhou Fuyang Jinma Motor Factory), is a professional production of hooded extreme cabinet motor, external rotor fan, FFU fan and other products of the company, plant area of 10,000 square meters, annual production capacity of 2 million motors and fans, with 16 years of motor production history; Product performance is reliable, scientific quality management system, with professional customized automated production equipment, quality quality, derived from professional, we with excellent quality, reasonable price for customer service. Hangzhou Jinjiu Electric Appliance Co., Ltd. integrity, strength and product quality have been recognized by the industry, welcome friends from all walks of life to visit, guide and business negotiations. If there is any feedback, we will reply patiently and carefully in a timely manner. We take the time and effort to solve every problem, no matter how mundane the problem you may encounter. We will always accommodate you, and you will find that we speak your language and understand your technical problems. That's why we've been so successful working with our clients from many countries over the years.