There are various classifications of the electromechanical industry: reducers, motors, generators, motors, variators, gearboxes, etc., and there are many small classifications for each reducer, motor, and motor. Different working principles of reduction motors, now let's briefly introduce the classification of reduction motors and their structure and working principles.

There are three types of geared motors: DC geared motors, synchronous geared motors, asynchronous geared motors, and DC geared motors are rotating motors that convert DC electrical energy into mechanical energy (DC motors) or mechanical energy into DC electrical energy (DC generators). According to its purpose, it can be divided into motors and generators, but there are also other special-purpose motors, such as torque motors used as executive components and general transmission power in automatic control systems. A ring-shaped permanent magnet is fixed inside the DC motor. The current passes through the coil on the rotor to generate Loren magnetic force. When the coil on the rotor is parallel to the magnetic field, the direction of the magnetic field that continues to rotate will change. Therefore, the brush at the end of the rotor contacts the conversion plate alternately, so that the current direction on the coil also changes, and the generated Loren magnetic force direction remains unchanged, therefore, the geared motor can maintain one direction of rotation. With the wide application and improvement of the thyristor rectifier power supply, DC generators are no longer used in many fields, but the application range of DC motors is further expanded. In some areas (such as vacuum smelting industry and no AC power grid and the occasion of DC power supply), DC generator still has a certain position. Structure of DC motor: main magnetic pole, commutating pole, machine base, brush device, rotor, armature core, armature winding, commutator, shaft, excitation mode of DC motor: excitation mode of DC motor, shunt DC Motor, series-excited DC motor, compound-excited DC motor

Synchronous reduction motors can be divided into generators, motors and compensation machines according to their uses, but they are mainly used as generators: if they are divided according to their structure, there are rotating armature type (magnetic poles are fixed on the stator) and rotating magnetic field type (The armature is fixed around the stator) synchronous reduction motor, which is a commonly used AC motor like induction motor. The characteristics are: steady-state operation, the rotor speed and the grid frequency has a constant relationship between n = ns = 60f/p,ns is called synchronous speed. If the frequency of the grid does not change, the speed of the synchronous motor is constant in steady state and has nothing to do with the size of the load. Synchronous gear motors are divided into synchronous generators and synchronous motors. The AC machines in modern power plants are mainly synchronous motors. Working principle: the establishment of the main magnetic field, current-carrying conductor, cutting motion, the generation of alternating potential, interchange and symmetry. There are roughly two types of synchronous motors in structure: the rotor is excited by direct current, and the rotor does not need to be excited. There are three main operating modes of synchronous motors, namely, as a generator, a motor and a compensation machine. Running as a generator is the most important mode of operation of synchronous motors, and running as a motor is another important mode of operation of synchronous motors.

Asynchronous gear motor is mainly used as a motor, it is the most widely used in various motors, the largest demand for a motor. About 90% of the electrical raw forces are asynchronous motors, of which small asynchronous motors account for 70%. In the total load of the power grid, the asynchronous motor accounts for more than 60%. Advantages: simple structure, convenient manufacture, low price and convenient operation. Disadvantages: power factor lag, light load power factor is low, speed performance is slightly worse. Mainly used for electric motors, generally do not do generator reduction motors

The classification, structure and principle of the reduction motor have made a basic introduction. If you want to deeply understand the structure, principle and classification of the reduction motor, you need to constantly explore it. It is best to read the development history of the reduction motor, from which you can learn the development and formation of the reduction motor and feel the great invention of mankind.