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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.9
- 수록면
- 1,207 - 1,216 (10page)
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초록· 키워드
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In order to suppress the low frequency oscillation of the neutral-point voltage for three-level inverters, this paper proposes a new discontinuous pulse width modulation (DPWM) control method. The conventional sinusoidal pulse width modulation (SPWM) control has no effect on balancing the neutral-point voltage. Based on the basic control principle of DPWM, the relationship between the reference space voltage vector and the neutral-point current is analyzed. The proposed method suppresses the low frequency oscillation of the neutral-point voltage by keeping the switches of a certain phase no switching in one carrier cycle. So the operating time of the positive and negative small vectors is equal. Comparing with the conventional SPWM control method, the proposed DPWM control method suppresses the low frequency oscillation of the neutral-point voltage, decreases the output waveform harmonics, and increases both the output waveform quality and the system efficiency. An experiment has been realized by a neutral-point clamped (NPC) three-level inverter prototype based on STM32F407-CPLD. The experimental results verify the correctness of the theoretical analysis and the effectiveness of the proposed DPWM method.
목차
Abstract
I. INTRODUCTION
II. THE BASIC PRINCIPLE OF DPWM CONTROL
III. THE INFLUENCE OF THE REFERENCE SPACE VOLTAGE VECTOR ON THE NEUTRAL-POINT CURRENT
IV. METHODS FOR SUPPRESSING THE LOW FREQUENCY OSCILLATION OF THE NEUTRAL-POINT VOLTAGE
V. EXPERIMENTAL VERIFICATION
VI. CONCLUSION
REFERENCES
참고문헌 (16)
참고문헌 신청
[학술지(정기간행물)] - A. Nabae / 1981 / A new neutral-point-clamped PWM Inverter / IEEE Trans. Ind. Appl., Vol 1A-17 (5) : 518 ~ 522
[학술지(정기간행물)] - C. C. Wang / 2010 / Analysis and calculation of Zero-Sequence Voltage Considering Neutral-Point Potential Balancing in Three-Level NPC converters / IEEE Trans. Ind. Electron. 57 (7) : 2262 ~ 2271
[학술지(정기간행물)] - J. S. Lee / 2014 / New Modulation Techniques for a Leakage Current Reduction and a Neutral-Point Voltage Balance in Transformerless Photovoltaic Systems Using a Three-Level Inverter / IEEE Trans. Power Electron 29 (4) : 1720 ~ 1732
[학술지(정기간행물)] - J. Pou / 2007 / Fast-Processing modulation strategy for the neutral-point-clamped converter with total elimination of low-frequency voltage oscillations in the neutral point / IEEE Trans. Ind. Electron 54 (4) : 2288 ~ 2294
[학술지(정기간행물)] - U. M. Choi / 2014 / New modulation strategy to balance the neutral-point voltage for three-level neutral-clamped inverter systems / IEEE Trans. Energy Convers 29 (1) : 91 ~ 100
[학술지(정기간행물)] - C. C. Wang / 2010 / Analysis and calculation of Zero-Sequence Voltage Considering Neutral-Point Potential Balancing in Three-Level NPC converters / IEEE Trans. Ind. Electron. 57 (7) : 2262 ~ 2271
[학술지(정기간행물)] - J. S. Lee / 2014 / New Modulation Techniques for a Leakage Current Reduction and a Neutral-Point Voltage Balance in Transformerless Photovoltaic Systems Using a Three-Level Inverter / IEEE Trans. Power Electron 29 (4) : 1720 ~ 1732
[학술지(정기간행물)] - J. Pou / 2007 / Fast-Processing modulation strategy for the neutral-point-clamped converter with total elimination of low-frequency voltage oscillations in the neutral point / IEEE Trans. Ind. Electron 54 (4) : 2288 ~ 2294
[학술지(정기간행물)] - U. M. Choi / 2014 / New modulation strategy to balance the neutral-point voltage for three-level neutral-clamped inverter systems / IEEE Trans. Energy Convers 29 (1) : 91 ~ 100
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UCI(KEPA) : I410-ECN-0101-2016-560-001877063