Title :
Vector-control of induction motor: study of sampling time, switching frequency and output quantization step
Author :
Aphiratsakun, Narong ; Techakittiroj, Kittiphan ; Threevithayanon, Wutthikorn
Author_Institution :
Fac. of Eng., Assumption Univ., Bangkok, Thailand
Abstract :
This work studies the effect of sampling time, the switching frequency and quantization step on the position performance and efficiency of a vector-control inverter. The sampling time is affected by the computational power of the processing unit. The switching frequency and quantization step are caused by the CPU clock and the PWM frequency of the processing unit. Usually the cost of the processing unit counts as 10-20% of a small inverter for motor control. By being able to reduce the computational power and the PWM frequency, the processing unit can cost be lower and allows cost saving for a vector-control inverter.
Keywords :
PWM invertors; cost reduction; induction motors; machine vector control; switching convertors; CPU clock; PWM frequency; cost saving; motor control; position performance; processing unit; quantization step; sampling time effect; switching frequency; vector-control inverter; Central Processing Unit; Clocks; Costs; Induction motors; Motor drives; Pulse width modulation; Pulse width modulation inverters; Quantization; Sampling methods; Switching frequency;
Conference_Titel :
TENCON 2004. 2004 IEEE Region 10 Conference
Print_ISBN :
0-7803-8560-8
DOI :
10.1109/TENCON.2004.1414857