Natural Sampling SVM-Based Common-Mode Voltage Reduction in Medium-Voltage Current Source Rectifier

作者：Wei Qiang^*; Wu Bin; Xu Dewei; Zargari Navid Reza

来源：IEEE Transactions on Power Electronics, 2017, 32(10): 7553-7560.

DOI：10.1109/TPEL.2016.2632442

• Common-mode voltage (CMV)
• current source rectifier (CSR)
• low-order harmonics
• medium voltage (MV)
• natural sampling space vector modulation (SVM) (NS-SVM)

Conventional space vector modulation (SVM)-based common-mode voltage (CMV) reduction in medium-voltage (MV) current source rectifier (CSR) cannot be used in practice. Conventional SVM contains high-magnitude low-order harmonics, particularly the fifth and seventh harmonics, that are lying closely to the resonance frequency (4.5-5.5 p.u.) of the LC filter of the converter, thus, introducing resonance as the grid-side damping is small. Recently, a natural sampling SVM(NS-SVM) with superior low-order harmonics performance has been proposed for MV CSR. On this basis, a NS-SVM-based CMV reduction method is proposed for MV CSR in this paper. The proposed scheme achieves both good CMV reduction and superior low-order harmonics performance simultaneously. Additionally, effort to lower computational burden on calculating dwell times is made. Experiments are finally provided.

• 出版日期2017-10