Green uninterrupted power system

A power supply and green technology, applied in the field of green uninterruptible power supply, can solve the problems of no voltage high-end compensation function, low efficiency, high failure rate, etc.

Inactive Publication Date: 2006-03-22
郁百超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the shortcomings of traditional UPS such as high cost, low efficiency, complex circuit and high failure rate, overcome the shortcomings of UPSWI without high-end voltage compensation function, power factor correction function, and cannot output AC, and introduce a low-cost , high efficiency, simple circuit, low failure rate, safe and reliable, green uninterruptible power supply with...

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0030] Embodiment 1: It can output both AC and DC, and the ratio of AC voltage to DC voltage can be selected by the user.

[0031] When the mains is in the normal range, the relay RL is in the normally closed contact, and the input voltage only passes through the rectifier, power correction stage and phase inverter stage. The rectifier inverts the sinusoidal AC voltage of the mains into steamed waves, which is convenient for unilateral power factor correction. The purpose of unilateral power factor correction for AC voltage is to enable AC and DC voltage to pass through the same power channel, thereby simplifying the circuit structure and saving the cost of the whole machine. After the steamed bread wave voltage after power factor correction passes through the capacitor C2, the superimposed high-frequency pulse generated by the power factor corrector is filtered out, and then the steamed bread wave voltage is restored to a sinusoidal AC output voltage by the inverter stage Va...

Embodiment approach 2

[0037] Embodiment 2: Only output AC voltage.

[0038] If only the AC voltage is output, the filter stage connected after the power correction stage in the first embodiment can be removed, and the working process and working principle are the same as those in the first embodiment.

Embodiment approach 3

[0039] Embodiment 3: Only output DC voltage.

[0040]If only DC voltage is output, the inverter stage connected to the power correction stage in Embodiment 1 can be removed. The working process and working principle are basically the same as Embodiment 1. At this time, the battery voltage does not pass through the sine cutting stage, but directly enters the power Correction level, because the output voltage is DC, it is not necessary to cut the DC into a sine wave.

[0041] A few notes:

[0042] 1. The circuit composed of the field effect transistor Q1 in the sine cutting stage (see Figure 7 ), simple structure, less components and more functions:

[0043] 1) emitter follower,

[0044] 2) Linear DC regulator,

[0045] 3) low frequency power amplifier,

[0046] 4) High frequency power converter,

[0047] Q3, the pre-amplification stage of field effect transistor Q1, amplifies the unilateral pulsating sine wave reference signal Vsin entering from the source to the rated v...

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Abstract

This invention relates to a green power supply, which eliminates the inverter in the traditional supply and outputs AC voltage and DC voltage to keep all the advantages and overcome all the shortcomings of the traditional uninterrupted power supply: the power factor correct function and no interference to the net side, the THD is under 3% and the input factor is over 99%. It has the voltage high-end compensation function and works under the commercial power of 160-280V.

Description

technical field [0001] The invention relates to a green uninterruptible power supply. Background technique [0002] Traditional uninterruptible power supply UPS, when there is commercial power, first converts the commercial power to DC voltage through the AC / DC converter, then performs power factor correction through the DC / DC converter, and then through DC / AC conversion Converter, invert it into AC voltage, and provide it to user equipment; when there is no mains power, the DC voltage of the battery is boosted by the DC / DC converter first, and then converted into AC voltage through the DC / AC converter, and provided to the user The equipment also needs to perform DC / DC conversion to charge the battery. Both the voltage of the mains and the storage battery must undergo secondary or tertiary power conversion to reach the user equipment, so the power loss is large and the efficiency of the whole machine is low. At the same time, due to the complex circuit, many power conversi...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/06H02M7/48
Inventor 郁百超
Owner 郁百超
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