Fault processing method and device for power supply equipment
A fault handling method and power supply equipment technology, applied in the electronic field, can solve problems such as poor power supply reliability, low equipment power supply stability, interruption of power supply output of inverter power system, etc., to achieve high applicability, improve power supply reliability, and ensure normal operation The effect of power supply
Active Publication Date: 2017-11-17
HUAWEI DIGITAL POWER TECH CO LTD
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Problems solved by technology
In the scenario where there are multiple power supply modules used in parallel in the inverter power system, if a faulty module occurs among the multiple power supply modules during the working process of the inverter power system, a fault loop will be formed in the multiple power supply modules. In turn, other normal modules cannot work normally, and eventually the power supply output of the inverter power supply system is interrupted, which affects the normal operation of key loads, and the power supply stability of the equipment is low, and the power supply reliability is poor
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[0029] Embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
[0030] see figure 1 , is a structural diagram of the inverter power system. like figure 1 , in the block diagram of a typical inverter power supply system, the inverter power supply system mainly includes three parts, including DC / DC module (also called DC / DC power converter), AC to DC power supply AC / DC module (also called AC / DC DC power converter) and DC to AC power supply (DC / AC module) (also known as DC / AC power converter), etc. The inverter power supply system usually has three power ports: DC (such as battery) input port, AC (such as mains) input port and AC output port. The above three power ports correspond to the above three power converters respectively, wherein the DC input port corresponds to the DC / DC power converter, the AC input port corresponds to the AC / DC power converter, and the AC output port corresponds to the...
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The embodiment of the invention discloses a fault processing method and device for power supply equipment; and the method is applied to an inverter power supply system in the power supply equipment. The inverter power supply system comprises at least one DC / DC module including fuses F1 and F2, relays K1 and K2, inductors L1 and L2, switch modules Q1, Q2, and Q3, and direct-current bus capacitors C1 and C2. In addition, the fault processing method includes: if a fault of any DC / DC module inc is detected, an assembly with the fault in the fault module is detected; and if a fault occurs at the assembly C1 or C2 and the inverter power supply system is in a battery discharging mode, the Q2 in the fault module is conducted and thus the F1 and F2 in the fault module are fused to realize disconnection between the fault module and other DC / DC modules. Therefore, the circuit stability of the DC / DC module is improved and power supply reliability of the inverter power supply system is enhanced.
Description
technical field [0001] The present invention relates to the field of electronic technology, in particular to a fault handling method and device for power supply equipment. Background technique [0002] The inverter power supply system is widely used in various equipment with high power supply reliability requirements, and the inverter power supply system is used to supply power for loads with high power supply stability requirements. For example, in the communication field, an inverter power system such as an inverter or an uninterruptible power system (Uninterruptible Power System, UPS) is usually used to supply power to key loads that require high power supply stability. [0003] In the prior art, as the capacity of the inverter power supply system becomes larger and larger, more and more power supply modules in the inverter power supply system are used in parallel. There are also a large number of cases where DC power supplies (DC / DC) are used in parallel. In the scenar...
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IPC IPC(8): H02J7/34
CPCH02J7/34H02J4/00H02J7/0034H02J2207/20G01R31/40H02J7/0029H02J7/0047H02M3/1584
Inventor 蒋正东肖波
Owner HUAWEI DIGITAL POWER TECH CO LTD