Close-loop Space Vector Control Scheme for Induction Motor Based on DSP

Author(s):  
Ze Ying ◽  
Zhi Rucheng ◽  
Han Long Zuo
1987 ◽  
Vol 107 (2) ◽  
pp. 191-198 ◽  
Author(s):  
Toshiaki Okuyama ◽  
Noboru Fujimoto ◽  
Takayuki Matsui ◽  
Yuzuru Kubota

Author(s):  
Ramana Vasu. R ◽  
George Fernandez S. ◽  
Vijayakumar K.

<p>A conventional vector control of the asynchronous machine makes an analogy of an equivalent separately excited DC machine. It offers a decoupled control of torque and flux which is perpendicular to each other hence one vector is not interfered by other parameters. So, torque and speed control is achieved in an isolated manner even though they are closely interlinked. This is implemented by aligning the rotor flux with the direct axis of the synchronously rotating reference frame. PI controllers play a key role to achieve the desired topology of the VFD. Three controllers are used in the system, flux, speed and torque controller. Tuning of flux controller is quite simple, but in case of speed and torque, it became quite tricky because the output of the speed controller is the reference signal of torque controller. Moreover, there is no distinct method to tune the controllers in the vector control system. Still, the entire high-performance dynamic response of the machine depends on the perfect tuning of those controllers. From the above analysis, it is understood that system identification is essential to tune the PI controllers. But being an asynchronous machine, to obtain system transfer function in a decoupled manner is very difficult. To overcome this problem, the proposed model will be Conventional sine PWM modulated switching pulses are used to implement variable frequency drives for induction motor. Space vector modulated PWM switching pulse is used to fire IGBT. In the case of sine, PWM modulated switching; DC bus voltage utilization is 50% whereas in space vector modulated inverter 57.73% DC Bus voltage utilization can be achieved. <strong></strong></p>


Author(s):  
M. LAKSHMISWARUPA ◽  
G Tulasi Ram Das ◽  
P.V. RAJGOPAL

This paper develops the application of a different control strategy to the vector control of the voltage-fed induction motor. The proposed model decomposes the control task into three loops, namely, the speed loop, the d-axis flux loop and the q -axis flux loop. Then, tracking of speed with different controllers is designed for each loop. Proportional- Integral update laws are used to adjust the control parameters, which increases the tracking performance (Z-N Method) .Simulations are obtained shows good robustness against parameter variations, high tracking performance and simplicity of implementation.


Author(s):  
Ansh Yadav ◽  
Soumyadip Sarojkumar Datta ◽  
Protik Pandey ◽  
Joseph Peter ◽  
Sivaprasad Athikkal

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