| Power supply redundancy general scheme has a capacity to take cold standby redundancy, redundancies, N + 1 backup flow, such as redundant waste heat backup way. Capacity redundancy refers to the maximum load power supply capacity is greater than the actual load, it does little to improve the reliability. Redundant cold backup refers to the power supply is composed of multiple function the same module, by one of the normal power supply, when the failure, the backup module starts to work immediately.The shortcoming of this approach is the power switch time interval, easy to cause the voltage gouges where whole pieces were missing.The flow to the N + 1 backup way is refers to the power supply is composed of multiple identical units, each unit through the or gate diodes connected in parallel, at the same time to the device from the respective power supply. This solution during a power failure will not affect the load power supply, but easily affected all unit load short circuit.Redundant heat backup refers to the power supply is composed of multiple cells, and work at the same time, but only by one of the power supply to the equipment, other light. Main power supply failure backup power supply can be immediately, small output voltage fluctuations. For some need long time continuous operation, high reliable system, such as base station equipment, communication equipment, * server, often require high reliable power supply. Redundant power supply design is one of the key part, plays an important role in the high availability system.Redundant power supplies power of 2 or more general configuration. When a power failure, other power supply can immediately put into, don't interrupt normal operation of the equipment. This is similar to the working principle of UPS power: when the power grid by the battery power supply. The difference between the redundant power supply and UPS mainly by different power supply and power supply, UPS is a power supply another standby at any time, automatic switch, whenever they are needed. |
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