Petrochemical system with explosion-proof motor

 Cast Iron electrical motor auto spare parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality
3. Delivery Detail:within 10 days after receiving deposit 
 (1) increased safety and no spark machine demand will rise. Petrochemical system users in the use of practice; Has realized the development of our country the necessity of increasing safety and no spark motor. In electric motor 12v 500w addition, a large number of the 1970 s [bow into the device the increased safety of form a complete set, no spark machine has to adopt a suitable alternative goods. (2) the reliability of the explosion-proof electric motor have been petrochemical system user attention increasingly. Petrochemical enterprise development has become increasingly large scale and continuous operation, the system to realize the long period operation and maintenance free or less maintenance. Therefore, explosion-proof motor becomes the key equipment to ensure the above requirements. (3) explosion-proof and efficient single phase motor frequency conversion motor has become a petrochemical user pressing for the development of energy-saving products. 


gost motor 7.5kw

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
In recent years has produced YBx and YAX explosion-proof series high efficiency motor, after the market is very popular with users. Explosion-proof motor energy conservation work has two aspects: one is to develop efficient explosion-proof electrical products, 2 it is to develop various kinds of special explosion-proof motor speed control products, especially the fan and pump will have great potential for energy saving and compressor motor is designed for speed regulating motor. (4) the coastal petrochemical enterprise's development will bring the new requirements. China's coastal area will be built a batch of oil refinery, all needs motor electric to import crude oil, and high sulphur content in crude oil imports, serious corrosion, and therefore requires explosion-proof motor improve anti- corrosion performance; in addition to import crude oil must be by sea, the high head big flow pump storage tanks requires matching of explosion-proof motor. (5) the western big development of petroleum industry in our country, development is suitable for hot desert environment of explosion- proof motor products. Hydrogenation unit supporting type with large capacity increased safety brushless excitation synchronous motor market needs to be increased year by year.

Research on the positioning control of asynchronous motor - scheme design

 At the beginning of the three-phase ac asynchronous motor brake,the commonly used inverter control,when go downhill to a lower end (e.g.,50 RPM),switch to this system.Due to the ac motor is strong coupling,multi-variable,nonlinear complex controlled object,more difficult to establish accurate mathematical model,and fuzzy control motor magnet does not need to establish a precise mathematical model of controlled object,has strong robustness.In practice,a motor with load is uncertain,but there are a range of.By fuzzy control to determine the location in a certain range.Energy consumption braking of ac motor parts motor is a motor spindle speed is zero,the braking torque to zero as well,so,in the motor brake mode choice with the method of braking energy.

Braking energy: the energy generator generator set consumption of the asynchronous motor brake,the stator winding of the motor from three-phase power source and immediate access to the stator winding dc current.No dc power supply,can be used as shown in figure 1 a circuit;If a dc power supply,can be used as shown in figure b connection mode.Circuit shown in figure 1,the normally open contacts of contactor KM1,when closed to the three-phase ac power supply,motor stator motor running on electric state.For braking energy,can make the power coil,contactor XK acmotortrading.blogspot.com motor from three-phase ac power supply.Immediately make the contactor coil electricity KM2,normally open contacts closed KM2,within two phase winding of the stator flux into the dc power supply.