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Uninterruptible power source circuit and control method thereof

A technology of power circuit and inductance, which is applied in the field of communication, can solve the problems of large charger, low integration, large overall UPS volume, etc., and achieve the effect of simplifying the circuit structure, improving the circuit integration, and reducing the volume of the whole machine

Inactive Publication Date: 2014-02-05
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing online UPS structure includes a charger. The charger is large in size and complex in structure, which makes the UPS overall large in size and low in integration.

Method used

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  • Uninterruptible power source circuit and control method thereof
  • Uninterruptible power source circuit and control method thereof
  • Uninterruptible power source circuit and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see Picture 1-1 , the embodiment of the present invention provides a UPS circuit, including:

[0042] AC input module 1, positive boost module 2, negative boost module 3, battery 4, first switching tube S1, first thyristor Q1, second thyristor Q2 and first diode D1;

[0043] The AC input module 1 is used to convert the mains power into a DC voltage. The positive Boost boost module 2 is connected to the AC input module 1. The positive Boost boost module 2 is used to output the AC input module 1 in the positive half cycle of the mains power. The DC voltage is boosted, and the negative Boost boost module 3 is connected to the AC input module 1. The negative Boost boost module 3 is used to boost the DC voltage output by the AC input module 1 in the negative half cycle of the mains power. The first The thyristor Q1 is used to selectively connect the AC input module 1 and the battery 4 to the positive Boost boost module 2 or the negative Boost boost module 3;

[0044] The c...

Embodiment 2

[0068] An embodiment of the present invention provides a method for controlling a UPS circuit, which can control any of the UPS circuits provided in the above embodiments, see figure 2 , the method includes:

[0069] Step 201: Control the conduction of the first switch tube, so that the first output filter capacitor in the positive boost module outputs current to the first inductor in the positive boost module, so that the first inductor stores energy;

[0070] Step 202: Control the first switching tube to turn off, discharge the first inductor in the positive boost module and charge the battery through the second thyristor and the first diode.

[0071] Preferably, the above step 201 may be:

[0072] Control the conduction of the first switch tube, so that the current in the first output filter capacitor in the positive Boost boost module flows into the neutral of the mains through the first switch tube, the first inductor and the second switch tube in the positive Boost boo...

Embodiment 3

[0078] see Figure 3-1 , the embodiment of the present invention provides a UPS circuit, including:

[0079] AC input module 1, positive boost module 2, negative boost module 3, battery 4, first switching tube S1, first thyristor Q1, second thyristor Q2 and first diode D1;

[0080] The AC input module 1 is used to convert the mains power into a DC voltage. The positive Boost boost module 2 is connected to the AC input module 1. The positive Boost boost module 2 is used to output the AC input module 1 in the positive half cycle of the mains power. The DC voltage is boosted, and the negative Boost boost module 3 is connected to the AC input module 1. The negative Boost boost module 3 is used to boost the DC voltage output by the AC input module 1 in the negative half cycle of the mains power. The first The thyristor Q1 is used to selectively connect the AC input module 1 and the battery 4 to the positive Boost boost module 2 or the negative Boost boost module 3;

[0081] The e...

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Abstract

The invention discloses an uninterruptible power source circuit and a control method of the circuit, and belongs to the field of communication. The circuit comprises an alternating-current input module, a positive Boost module, a negative Boost module, a battery, a first switch tube, a first thyristor, a second thyristor and a first diode. The collector electrode of the first switch tube is connected with the cathode of a second diode of the positive Boost module and a first output filter capacitor in the positive Boost module, the emitting electrode of the first switch tube is connected with the cathode of the first diode, the cathode of the first thyristor and a first capacitor in the positive Boost module, the anode of the first thyristor is connected with the cathode of the battery and the cathode of the second thyristor, the cathode of the first thyristor is connected with the cathode of the first diode and the first capacitor of the positive Boost module, the anode of the first diode is connected with the cathode of the battery and a second capacitor of the negative Boost module, and the cathode of the first diode is connected with the first capacitor in the positive Boost module. The circuit has the advantages of improving the circuit integrated degree, and reducing the size of the whole machine.

Description

technical field [0001] The invention relates to the communication field, in particular to an online UPS circuit and a control method thereof. Background technique [0002] Online UPS is mainly used to protect important loads such as computers or communication equipment, so that computers or communication equipment will not be affected by various disturbances (including power outages) in the power grid, and computers or communication equipment can operate normally and protect data under any circumstances. . [0003] The current online UPS consists of a rectifier circuit, a positive Boost circuit, a negative Boost circuit, a battery, a charger, and a thyristor. The rectifier circuit is connected to the positive Boost circuit and the negative Boost circuit. Connect with the negative Boost circuit, the charger is connected with the battery, the mains power is converted into a DC voltage through the rectification circuit, and output to the positive Boost circuit and the negative...

Claims

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Application Information

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IPC IPC(8): H02J7/00
Inventor 程洋石浩刘培国
Owner HUAWEI TECH CO LTD
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