Is the most widely used in all kinds of motor ac asynchronous motor

Is it convenient to use,reliable operation,low cost,firm structure,but power factor Low,speed is also more difficult.The large capacity of low speed synchronous motor is commonly used engine (see synchronous motor).Synchronous motor power factor is high,and its speed and negative Size has nothing to do,only www.dongfeng-motor.com depends on the frequency of power grid.Work more stable.In wide scope use dc motor speed control occasions.But it has a commutator,the structure is complex,the price Expensive,maintenance difficulties,not suitable for bad environment.Since the 1970 s,with the development of power electronic technology,ac motor speed control technology is mature,equipment prices Reducing increasingly,have begun to get the application.Motor working in prescribed format (continuous duty system,short-time duty system,intermittent cycle) can assume without cause motor Thermal Motor vehicle maximum output mechanical power as its rated power,should pay attention to when using the provisions of the nameplate.Motor must be noticed when running the load characteristics and characteristics of the motor Match,avoid coasters or shut down.Electric function provides a large range of power,class from milliwatts to kilowatts.The use of the motor and control is very convenient and has since Motion,acceleration,braking,reverse and stopper live ability,can meet various operation requirements; The working efficiency of three phase generator the motor is higher,and without dust,smell,no pollution and noise Also small.Because of its series of advantages,so in industrial and agricultural production,transportation,national defense,commercial and household appliances,medical electrical equipment and so on various aspects are widely used.a A motor drive its output power will change with the rotational speed.