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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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In this paper, a novel strategy of current regulation is proposed that utilizes a voltage model of induction motor and compensates for the current deviation due to the non-ideal behaviors of inverter and the difference between the voltage model and real system with PI controller. A good steady-state performance is obtained by means of an integral compensation and fast transient response is also possible since the required voltage is calculated from the voltage model directly.
The other aspect of current regulation, i.e. modulation part, is how the control voltage will be generated from PWM inverter. It is known that space voltage vector method yields more exact inverter output voltage than ramp-comparison PWM in high modulation index. So, this method is adopted as a switching strategy. In addition, the variable modulation scheme is presented which is changed from three phase to two phase modulation at high modulation index.
The other aspect of current regulation, i.e. modulation part, is how the control voltage will be generated from PWM inverter. It is known that space voltage vector method yields more exact inverter output voltage than ramp-comparison PWM in high modulation index. So, this method is adopted as a switching strategy. In addition, the variable modulation scheme is presented which is changed from three phase to two phase modulation at high modulation index.
목차
Abstract
1.Introduction
2.Field-Oriented Control of Induction Motor
3.Characteristics of Various Types of Current Regulator
4.Novel feedforward/feedback current control
5.Performance evaluation of each current regulator from simulation results
6.Conclusion
7.Reference
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