Loosely power flow control scheme for piezoelectric energy harvesting

2010 ◽  
Vol 46 (25) ◽  
pp. 1689 ◽  
Author(s):  
C.K. Lee ◽  
P.K.W. Chan ◽  
S.W. Or
Keyword(s):  
Energy Harvesting ◽  
Flow Control ◽  
Power Flow ◽  
Piezoelectric Energy Harvesting ◽  
Power Flow Control ◽  
Piezoelectric Energy ◽  
Control Scheme

scholarly journals A Centralized Power Flow Control Scheme of EV-Connected DC Microgrid to Satisfy Multi-Objective Problems under Several Constraints

2021 ◽  
Vol 13 (16) ◽  
pp. 8863
Author(s):  
Faris Adnan Padhilah ◽  
Kyeong-Hwa Kim
Keyword(s):  
Flow Control ◽  
Power Flow ◽  
Experimental Tests ◽  
Dc Microgrid ◽  
Power Flow Control ◽  
Multi Objective ◽  
Operating Modes ◽  
Control Scheme ◽  
Prime Objective ◽  
Standard Energy

Integrating electric vehicles (EVs) into a microgrid improves the efficiency, flexibility, and robustness of microgrids. Unfortunately, the uncertainties of EVs, in terms of their connection/disconnection times and their initial SOC values, make integrating EVs into microgrids a more challenging issue. Contrary to the standard energy management system (EMS), integrating EVs into microgrids raises several multi-objective problems that need to be solved. In this study, a centralized power flow control scheme for an EV-connected DC microgrid (DCMG) is proposed to satisfy these multi-objective problems under several constraints. Two prime objective functions of the DCMG are presented to demonstrate the benefits to both the DCMG system and EV owners. Then, a reliable and optimized DCMG system is constructed to satisfy the selected prime objective function. The operating modes of each agent in the DCMG are defined based on information regarding the EV connection/disconnection status, the initial EV SOC values, the generation power of the wind power agent, the battery SOC levels, and the grid availability. The effectiveness and robustness of the proposed scheme have been validated by in-depth simulations and experimental tests under the uncertainties of DG power, grid availability, electricity price conditions, and EV connections. In addition, the proposed scheme reliably regulates the DC-link voltage without severe transience, even if these uncertainties cause the task of controlling the DC-link voltage to be transferred from one agent to another.

scholarly journals d-q Control Scheme for Unified Power Flow Controller

2020 ◽  
Vol 22 (12) ◽  
Author(s):  
Rohan Khonde S ◽  
◽  
Sandeep Gaigowal R ◽  
Priya Gaikwad P ◽  
Manisha Gaikwad ◽  
...  
Keyword(s):  
Flow Control ◽  
Power Flow ◽  
Voltage Regulation ◽  
Active Power ◽  
Unified Power Flow Controller ◽  
Power Flow Control ◽  
Control Scheme ◽  
Active Power Flow ◽  
Flow Controller ◽  
Power Flow Controller

Unified Power Flow Controller (UPFC) is the most prominent versatile FACTS controller applied in power system providing dynamic control of transmission line parameters. It can achieve Voltage regulation, series compensation and phase shifting independently. It provides combined advantages of STATCOM and SSSC by connecting two VSC’s with common dc coupling. Active power and reactive power can be directly controlled using UPFC. This paper presents UPFC for active power flow control through transmission lines. Control scheme based on d-q transformation is demonstrated. System studies are presented in MATLAB Simulink to present the active power flow control in the line.

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