Permanent magnet synchronous motor（Permanent Magnet Synchronous Motor，For shortPMSM）As a high performance、High efficiency、High reliability motor，It has many advantages。The following is a specific summary of its advantages：

one、High efficiency and energy saving

• High efficiency：The average efficiency of permanent magnet synchronous motor is higher in the rated power point and the whole speed regulation range。Its exciting magnetic field is provided by a permanent magnet，The rotor requires no excitation current，Thus, the motor efficiency is improved。Compared with asynchronous motors，Permanent magnet synchronous motor can save power at any speed point，Especially at low speed advantage is more obvious（source：driving）。

• Energy saving：High efficiency means lower energy consumption，Helps to reduce operating costs，And meet the requirements of modern industry for energy conservation and emission reduction。

two、High power density and lightweight

• High power density：Due to the use of high-performance permanent magnet materials（Such as rare earth metal permanent magnets），Permanent magnet synchronous motor in the same capacity，The volume and weight can be greatly reduced。This allows the motor to provide greater power output in a limited space。

• Light weight：The lightweight of the motor is conducive to reducing the weight of the overall equipment，Reduce energy consumption，And improve the dynamic performance of the equipment。In areas such as electric vehicles，Lightweight is particularly important for improving driving range and reducing energy consumption。

three、Good dynamic performance

• High starting torque：Permanent magnet synchronous motor generally adopts asynchronous starting mode，And the rotor winding can meet the requirements of high starting torque during design。This allows the motor to quickly reach the desired speed during startup and acceleration。

• High acceleration：Because the moment of inertia is small and the allowable pulse torque is large，Permanent magnet synchronous motor can obtain higher acceleration，Meet the application scenarios that require high dynamic performance。

four、Low noise and vibration

• Low noise：Permanent magnet synchronous motor has little heat，The cooling system is simple in structure and small in size，Reduced mechanical vibration and noise。meanwhile，The gearless design also eliminates gear wear and noise。

• Low vibration：The smooth operation and low vibration characteristics of the motor help to extend the service life of the equipment，And improve the comfort of the working environment。

five、High reliability and maintenance free

• High reliability：The overload current allowed by permanent magnet synchronous motor is large，And the system adopts a completely closed structure，No transmission gear wear and noise，Free lubricating oil、maintenance-free。These features enable the motor to maintain stable operation in harsh environments。

• maintenance-free：Brushless design and gearless construction reduce maintenance efforts，Reduced maintenance costs。

six、A wide range of applications

• Permanent magnet synchronous motor is widely used in industrial automation because of its superior performance、Robot technology、Textile machinery、Printing machinery、New energy vehicle、Wind power generation、aerospace、Home appliances and medical equipment and other fields。In these areas，Permanent magnet synchronous motor plays an important role，It has promoted the development and progress of related industries。

To sum up，Permanent magnet synchronous motor for its high efficiency、High power density、Good dynamic performance、Low noise and vibration、High reliability and maintenance-free and a wide range of applications，It has become an indispensable and important equipment in modern industry。