TY - JOUR
T1 - Investigations on EMI Mitigation Techniques
T2 - Intent to Reduce Grid-Tied PV Inverter Common Mode Current and Voltage
AU - Subramaniam, Umashankar
AU - Bhaskar, Sagar Mahajan
AU - J.Almakhles, Dhafer
AU - Padmanaban, Sanjeevikumar
AU - Leonowicz, Zbigniew
PY - 2019/9/1
Y1 - 2019/9/1
N2 - Power inverters produce common mode voltage (CMV) and common mode current (CMC) which cause high-frequency electromagnetic interference (EMI) noise, leakage currents in electrical drives application and grid-connected systems, which consequently drops the efficiency of the system considerably. This CMV can be mitigated by designing suitable EMI filters and/or investigating the effects of different modulation strategies. In this paper, the effect of various modulation techniques over CMV and CMC are investigated for two-level and three-level inverters. It is observed that the modified third harmonic injection method reduced the CMV and CMC in the system by 60%. This modified pulse width modulation (PWM) technique is employed along with EMI chokes which results in reduced distortion of the system.
AB - Power inverters produce common mode voltage (CMV) and common mode current (CMC) which cause high-frequency electromagnetic interference (EMI) noise, leakage currents in electrical drives application and grid-connected systems, which consequently drops the efficiency of the system considerably. This CMV can be mitigated by designing suitable EMI filters and/or investigating the effects of different modulation strategies. In this paper, the effect of various modulation techniques over CMV and CMC are investigated for two-level and three-level inverters. It is observed that the modified third harmonic injection method reduced the CMV and CMC in the system by 60%. This modified pulse width modulation (PWM) technique is employed along with EMI chokes which results in reduced distortion of the system.
KW - ELECTROMAGNETIC interference
KW - PULSE width modulation transformers
KW - PULSE width modulation
KW - TELEMATICS
KW - ELECTRIC potential
KW - common mode current
KW - common mode voltage
KW - electromagnetic interference
KW - grid connected inverters
KW - mitigation
KW - modulation techniques
U2 - 10.3390/en12173395
DO - 10.3390/en12173395
M3 - Journal article
SN - 1996-1073
VL - 12
JO - Energies
JF - Energies
IS - 17
ER -