TY - GEN
T1 - Decentralized Control-Scheme for DC-Interconnected Solar Home Systems for Rural Electrification
AU - Narayan, Nishant
AU - MacKay, Laurens
AU - Malik, Bryan Oscareno
AU - Popovic-Gerber, Jelena
AU - Qin, Zian
AU - Bauer, Pavol
AU - Zeman, Miroslav
PY - 2019
Y1 - 2019
N2 - Solar Home Systems (SHS) have proven to be an effective means to tackle the global energy poverty that still affects around 1 billion people. However, present-day SHS (which are standalone systems with usually a purely dc architecture) have a limited power rating (usually up to 100 Wp). To enable higher power levels of electricity access in an economically viable way, energy sharing between these individual SHS through interconnectivity is a logical progression. The interconnectivity has to be implemented at a higher voltage level in order to reduce the conduction losses and cable costs. Existing control schemes do not take into account the multi-voltage dc microgrids. In this paper, the state of charge (SOC) balancing in such an interconnected SHS-based dc microgrid is addressed. In particular, the adaptive droop-based SOC control is extended for multiple voltage levels in a dc microgrid without any means of active communication. This is achieved through the creation of a voltage dead-band, SOC-based droop resistances, and the use of voltage ratios in dc-dc converters.
AB - Solar Home Systems (SHS) have proven to be an effective means to tackle the global energy poverty that still affects around 1 billion people. However, present-day SHS (which are standalone systems with usually a purely dc architecture) have a limited power rating (usually up to 100 Wp). To enable higher power levels of electricity access in an economically viable way, energy sharing between these individual SHS through interconnectivity is a logical progression. The interconnectivity has to be implemented at a higher voltage level in order to reduce the conduction losses and cable costs. Existing control schemes do not take into account the multi-voltage dc microgrids. In this paper, the state of charge (SOC) balancing in such an interconnected SHS-based dc microgrid is addressed. In particular, the adaptive droop-based SOC control is extended for multiple voltage levels in a dc microgrid without any means of active communication. This is achieved through the creation of a voltage dead-band, SOC-based droop resistances, and the use of voltage ratios in dc-dc converters.
KW - adaptive droop
KW - dc microgrid
KW - rural electrification
KW - SOC balancing
KW - Solar home systems
UR - http://www.scopus.com/inward/record.url?scp=85098207750&partnerID=8YFLogxK
U2 - 10.1109/ICDCM45535.2019.9232831
DO - 10.1109/ICDCM45535.2019.9232831
M3 - Conference contribution
AN - SCOPUS:85098207750
T3 - 2019 IEEE 3rd International Conference on DC Microgrids, ICDCM 2019
BT - 2019 IEEE 3rd International Conference on DC Microgrids, ICDCM 2019
PB - Institute of Electrical and Electronics Engineers (IEEE)
T2 - 3rd IEEE International Conference on DC Microgrids, ICDCM 2019
Y2 - 20 May 2019 through 23 May 2019
ER -
