TY - JOUR
T1 - Sliding Mode Control With Grid Voltage Modulated DPC for Voltage Source Inverters Under Distorted Grid Voltage
AU - Gui, Yonghao
AU - Xu, Qianwen
AU - Blaabjerg, Frede
AU - Gong, Hong
PY - 2019/11
Y1 - 2019/11
N2 - The grid voltage modulated direct power control (GVM-DPC) for grid-connected voltage source inverters has been introduced so that it can overcome the poor steady-state performance of the DPC. However, it was designed for a non-distorted grid voltage. In this paper, the GVM-DPC is modified to overcome a distorted grid voltage (e.g., fifth and seventh harmonics). First, a band pass filter is applied to extract the fundamental component of the voltage so as to build a model for the implementation of the GVM-DPC method. Next, a sliding mode control (SMC) is designed to handle the terms of the harmonic in order to minimize the total harmonic distortion (THD) of the output currents. Simulations and experimental results are presented to verify the effectiveness of the proposed SMC with GVM-DPC control strategy. It is shown that although the performance of real and reactive powers are sacrificed, the THD of the current is significantly reduced.
AB - The grid voltage modulated direct power control (GVM-DPC) for grid-connected voltage source inverters has been introduced so that it can overcome the poor steady-state performance of the DPC. However, it was designed for a non-distorted grid voltage. In this paper, the GVM-DPC is modified to overcome a distorted grid voltage (e.g., fifth and seventh harmonics). First, a band pass filter is applied to extract the fundamental component of the voltage so as to build a model for the implementation of the GVM-DPC method. Next, a sliding mode control (SMC) is designed to handle the terms of the harmonic in order to minimize the total harmonic distortion (THD) of the output currents. Simulations and experimental results are presented to verify the effectiveness of the proposed SMC with GVM-DPC control strategy. It is shown that although the performance of real and reactive powers are sacrificed, the THD of the current is significantly reduced.
KW - Voltage Source Inverter
KW - grid voltage modulated direct power control (GVM-DPC)
KW - distorted grid voltage
KW - sliding mode control
KW - total harmonic distortion (THD)
U2 - 10.24295/CPSSTPEA.2019.00023
DO - 10.24295/CPSSTPEA.2019.00023
M3 - Journal article
SN - 2475-742X
VL - 4
SP - 244
EP - 254
JO - CPSS Transactions on Power Electronics and Applications
JF - CPSS Transactions on Power Electronics and Applications
IS - 3
ER -