A Composite Power Supply with Emergency Power Supply and Active Filtering Function
A technology of emergency power supply and composite power supply, which is applied in the direction of emergency power supply arrangement, electrical components, reactive power compensation, etc., can solve problems such as unsatisfactory solution effects, resource sharing, resource waste, etc., to improve power supply quality, optimize city power, The effect of improving power quality
Active Publication Date: 2018-08-28
青岛创统科技发展有限公司
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- Description
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- Application Information
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Problems solved by technology
That is, one problem corresponds to one solution device, resources cannot be shared, and problem solving has great limitations, resulting in a serious waste of resources, and the solution effect is not ideal
Method used
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Embodiment Construction
[0027] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0028] The composite power supply of this embodiment proposes a brand-new power supply circuit topology for the problem that some electric loads require a second power supply and are prone to generate harmonics during the load operation process, causing pollution to the power grid, so that a The power supply equipment has two functions of emergency power supply and active filter. By sharing hardware resources, the design purpose of reducing product cost is achieved while improving power supply quality.
[0029] Such as figure 1 As shown, the composite power supply of this embodiment is mainly provided with a mains input terminal VIN, a load output terminal VOUT, an active inverter INV, an LC filter circuit, a battery pack BAT, and multiple switching elements KM1, KM2, MK3, and KM4. Wherein, the mains input terminal VIN is used for connecting ...
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The invention discloses a composite power supply with an emergency power supply and an active filter function. The composite power supply includes a commercial power input terminal, a load output terminal, an active filter, a reactive compensator, a current transformer, a storage battery, a dual switching device and a centralized controller. The centralized controller controls the current transformer to work in a rectification state when the commercial power is normal. After the active filter and the reactive compensator are turned on to carry out harmonic wave inhibition and reactive compensation on the commercial power, externally connected loads are powered up, and energy of the storage battery is accumulated. The centralized controller controls the current transformer to work in an inversion state when the commercial power is abnormal. A direct current output by the storage battery is inverted into an alternating current, and an uninterruptible power supply is provided for the externally connected loads. The power supply quality is improved while load power demands are satisfied. The transfer efficiency of the uninterruptible power supply is greatly improved, the energy utilization rate is improved, the caloric value of a system circuit is reduced, and the service life of the uninterruptible power supply is prolonged.
Description
technical field [0001] The invention belongs to the technical field of emergency power supply, and in particular relates to a composite power supply with both functions of emergency power supply and active filter. Background technique [0002] With the progress of society and the development of science and technology, more and more electrical equipment has put forward higher and higher requirements for the quality, safety and reliability of power supply. On the one hand, these electrical equipment (such as fire-fighting facilities, elevators, base stations, etc.) need to be equipped with a second power supply so that they can provide emergency power when the grid suddenly loses power, and the electrical equipment can continue to run for a period of time, avoiding the power consumption of the electrical equipment. Safety accidents that may be caused by sudden power failure and stop operation; on the other hand, these electrical equipment will generate a large number of harmon...
Claims
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IPC IPC(8): H02J3/01H02J3/18H02J9/06
CPCH02J3/01H02J3/18H02J9/06H02J9/062Y02E40/30Y02E40/40
Inventor 郜克存隋学礼
Owner 青岛创统科技发展有限公司