Design and Implementation of SRM Drive System

2013 ◽  
Vol 722 ◽  
pp. 331-335
Author(s):  
Shou Jun Song ◽  
Lu Sheng Wang ◽  
Zhi Hui Zhang
Keyword(s):  
Functional Module ◽  
Drive System ◽  
Control Methods ◽  
Loop Control ◽  
Switched Reluctance ◽  
Reluctance Machine ◽  
Program Flow ◽  
Dynamic Performances ◽  
Working Principle ◽  
And Control

In this paper, the basic operating principles and control methods of switched reluctance machine (SRM) are described briefly. Then, the drive system of a 3-phase SRM is designed and implemented. The design process includes two main parts: hardware and software. In hardware design, the structure and working principle of digital control and power drive circuit are presented. In software design, the program flow chart is provided, and details of each functional module are given as well. Finally, many experiments are carried out to verify the dynamic performances of the system. The phase current under different control methods, speed variation curve under closed-loop control and the mechanical characteristics of the system are given. Experimental results show that the designed SRM drive system has good speed adjusting ability and strong robustness.

Research on Density Control of Wind Jig Dry Coal Preparation System

2011 ◽  
Vol 179-180 ◽  
pp. 558-562 ◽  
Author(s):  
Wei Sheng Liu
Keyword(s):  
Coal Preparation ◽  
Control Methods ◽  
Preparation Technology ◽  
Loop Control ◽  
Density Control ◽  
Physical Density ◽  
Coal Particles ◽  
Working Principle ◽  
And Control ◽  
Close Loop Control

the paper exposits the purpose and the significance of the wind jig dry coal preparation technology, discuss the working principle and control methods of the wind jig dry coal preparation system. . Based on the dynamic data of the physical density, the control system auto tunes the speed of the opening by utilization of a frequency governor. Therefore, it controls the thickness of the beddepth very precisely and achieves the close loop control in the dry preparation system of coal dressing.Make use of adjustable air pressure and mechanical vibrations of materials according to the density and the particles on the sorting bed for loosing and layered, and using adjustable nesting institutions coal particles of different densities to classify, in order to achieve separation, refuse dumping, desulfurization purposes.

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