Research on the Application of LED DC Centralized Power Supply in Tunnel Lighting
Tunnel lighting works 24 hours a day,and the total load is large,which has higher requirements for the energy efficiency and reliability of lamps.The high energy efficiency can decrease the electrical load of tunnel lighting,and reduce the tunnel engineering cost and maintenance cost.DC power supply eliminates the circuit conversion part of AC to DC,which can significantly improve the power supply efficiency.The DC power supply circuit system topology is simpler,which failure rate and maintenance cost are lower than the AC power supply system,and the tunnel lighting system reliability is higher that can better meet the 24-hour power supply demand.In terms of security,DC is safer than AC.Since the new energy is usually direct current,such as solar energy,DC power supply can also be better compatible with the new energy system,without going through the process of new energy-inverter AC-DC conversion,saving system costs and further improving efficiency.Tunnel lighting is also usually related to the need for emergency lighting,and DC centralized power supply can seamlessly connect with emergency lighting systems(ELS).
high efficiency and energy savingno stroboscopicreliabilitysafetycompatible with new energy
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