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간접형 매트릭스 컨버터의 낮은 전류 리플을 갖는 향상된 예측 전류 제어

An Improved Predictive Current Control to Reduce Input-Output Current Ripple of an Indirect Matrix Converter

초록/요약

The predictive current control (PCC) for an indirect matrix converter (IMC) with reduced current ripple is presented in this paper. In the proposed PCC scheme, an IMC is driven by a split switching vector, which is used as a candidate vector of the cost function. The cost function of the proposed PCC includes a reference state and predicted state so that the optimal output vector is selected from the split switching vectors, thus alleviating current ripples on both the grid side and load side of the IMC. However, the use of the split switching vector increases computation complexity of the cost function optimization because the number of predicted states is increased by split switching vectors. Hence, the computation complexity reduction method in a deadbeat fashion is proposed for simple implementation of the proposed PCC on a digital signal processor. In addition, in this paper, the unity power factor on the grid side is guaranteed through a straightforward modulation technique when the maximum voltage is transferred. The performance of the proposed PCC for an IMC was verified by simulation and experimental results.

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목차

CHAPTER I. INTRODUCTION
CHAPTER II. OPERATIONAL PRINCIPLES OF THE IMC
2.1 Circuit Configuration
2.2 Modulation Technique for Unity Grid Power Factor
CHAPTER III. PREDICTIVE CURRENT CONTROL FOR IMC
3.1 Modeling of the Load and the IMC
3.2 Proposed Candidate Vector
3.3 Cost Function
3.4 Modulation Technique for the PCC
CHAPTER IV. IMPLEMENTATION OF THE PROPOSED PCC ON IMC
4.1 Computation Complexity Reduction Method
4.2 Delay Compensation
CHAPTER V. SIMULATION RESULTS
CHAPTER VI. EXPERIMENTAL RESULTS
CHAPTER VII. CONCLUSIONS
REFERENCES

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