关键词
:三相异步电动机,设计,伺服
Abstract
With the progress of time, the development of science and technology, the motor is also
developing, superior performance, low price, convenient control of the motor can better meet
the needs of the market and technical requirements.
Three-phase AC servo motor into permanent magnet synchronous servo motor and three-
phase AC induction servo motor , Permanent magnet synchronous servo motors and AC
induction servo motor, compared with the following features (1) Permanent magnet
synchronous servo motor than the cost of three-phase asynchronous servo motors to be
expensive.(2) Permanent magnet synchronous motor rotor use of permanent magnet materials,
capacity is limited only in the following 5.5 KW, capacity will increase further difficulties.
But AC induction servo motor is no capacity constraints on this issue. (3) Permanent magnet
synchronous servo motor torque when certain, will Magnet demagnetization, and AC
induction servo motor does not exist to this phenomenon. (4) Permanent magnet synchronous
servo motor with rotor magnet, so when running in high-speed motors, permanent magnet is
shedding risk.(5) Permanent magnet synchronous servo motor due to the use of permanent
magnet rotor constitute, at runtime rotor not produce heat, and three-phase AC induction
servo motor rotor at runtime will have considerable heat, the heat, permanent magnet
synchronous servo machine than three-phase asynchronous servo motor superiority.
Integrated said, considering China is a developing country, the electrical demand is still huge,
Motor's cost-effectiveness is an important consideration standards, Three-phase AC induction
servo motor than the permanent magnet synchronous servo motor on the whole, is more
suitable for China's national conditions and the direction of development. Three-phase AC