TY - JOUR
T1 - A Carrier Synchronization Method for Global Synchronous Pulse Width Modulation Application Using Phase-Locked-Loop
AU - Xu, Tao
AU - Gao, Feng
AU - Wang, Xiongfei
AU - Blaabjerg, Frede
PY - 2019/11
Y1 - 2019/11
N2 - When many distributed parallel inverters are integrated into grid without switching sequence coordinated control capability, the high frequency harmonics will accumulate randomly at the Point of Common Coupling (PCC). Global synchronous pulse width modulation (GSPWM) method can significantly attenuate the accumulated switching ripples by intentionally assuming an intelligent optimization algorithm and a communication system. To avoid the dependence on low-latency communication system, this paper proposes a novel phase locked loop based PWM carrier synchronization (PLL-CS) method for GSPWM system, where the switching sequences can be effectively synchronized as expected without using low-latency synchronization signals. By doing so, the operational reliability of the whole GSPWM system can be significantly improved while the additional hardware cost of GSPWM can be dramatically reduced, which can enhance the implementation adaptability of GSPWM method. Experimental results have verified the performance of the proposed PLL-CS GSPWM method.
AB - When many distributed parallel inverters are integrated into grid without switching sequence coordinated control capability, the high frequency harmonics will accumulate randomly at the Point of Common Coupling (PCC). Global synchronous pulse width modulation (GSPWM) method can significantly attenuate the accumulated switching ripples by intentionally assuming an intelligent optimization algorithm and a communication system. To avoid the dependence on low-latency communication system, this paper proposes a novel phase locked loop based PWM carrier synchronization (PLL-CS) method for GSPWM system, where the switching sequences can be effectively synchronized as expected without using low-latency synchronization signals. By doing so, the operational reliability of the whole GSPWM system can be significantly improved while the additional hardware cost of GSPWM can be dramatically reduced, which can enhance the implementation adaptability of GSPWM method. Experimental results have verified the performance of the proposed PLL-CS GSPWM method.
KW - Synchronization
KW - Inverters
KW - Power harmonic filters
KW - Harmonic analysis
KW - Pulse width modulation
KW - Communication systems
KW - Phase locked loops
KW - Carrier synchronization method
KW - global synchronous pulse width modulation
KW - phase locked loop
KW - distributed inverters
KW - Carrier synchronization (CS) method
KW - Distributed inverters
KW - Global synchronous pulsewidth modulation (GSPW)
KW - Phase-locked loop (PLL)
UR - http://www.scopus.com/inward/record.url?scp=85072104944&partnerID=8YFLogxK
U2 - 10.1109/TPEL.2019.2897725
DO - 10.1109/TPEL.2019.2897725
M3 - Journal article
VL - 34
SP - 10720
EP - 10732
JO - I E E E Transactions on Power Electronics
JF - I E E E Transactions on Power Electronics
SN - 0885-8993
IS - 11
M1 - 8634934
ER -