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Solar and commercial power complementary uninterruptable power system

A power supply system and complementary technology, applied in battery circuit devices, current collectors, photovoltaic power generation, etc., can solve the problem of slow switching speed, and achieve the effect of fast switching and efficient use of energy

Inactive Publication Date: 2008-10-22
ZHEJIANG PROV ENERGY RESOURCE INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention mainly solves the technical problem of slow switching speed of the existing solar power supply and mains power supply switching device, and provides a DC-driven vmos tube with fast switching speed, which does not restart the load and protects the safety of various loads. Solar and mains complementary uninterruptible power supply system

Method used

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  • Solar and commercial power complementary uninterruptable power system
  • Solar and commercial power complementary uninterruptable power system
  • Solar and commercial power complementary uninterruptable power system

Examples

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Embodiment 1

[0036] Embodiment 1: as figure 1 Shown, according to a kind of solar energy and mains complementary uninterrupted power supply system of the present invention, this system comprises:

[0037] City power and solar photovoltaic power supply system, the city power system includes a city power and a rectifier circuit connected to the city power, and the solar photovoltaic power supply system includes:

[0038] The solar panels connected in series are used to prevent the battery from overcharging the overcharge protection circuit, the battery used to store electric energy is used to output the undervoltage signal circuit of the control signal; the over-discharge protection circuit is connected to the battery and used To prevent the battery from over-discharging, a diode D1 with anti-reverse charge function is also connected between the solar panel and the battery; the undervoltage signal circuit is mainly composed of integrated circuit IC4, resistor R43, and resistor R44. The 5 pi...

Embodiment 2

[0050] Embodiment 2: as image 3 Shown, according to a kind of solar energy and mains complementary uninterrupted power supply system of the present invention, this system comprises:

[0051] City power and solar photovoltaic power supply system, the city power system includes a city power and a rectifier circuit connected to the city power, and the solar photovoltaic power supply system includes:

[0052] The solar panels connected in series, the overcharge protection circuit used to prevent the battery from overcharging, the battery used to store electric energy, the over-discharge protection circuit used to prevent the battery from over-discharging, between the solar panel and the over-discharge circuit A diode D31 with an anti-reverse charge function is also connected between them. As shown in Figure 4, the overcharge protection circuit includes a VMOS transistor T31, a triode T32 and a diode D31, the D pole and the S pole of the VMOS transistor T31 are connected to the s...

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Abstract

The invention discloses a solar energy and commercial power complementary uninterrupted power supply system. The system comprises a commercial power system and a solar photovoltaic power supply system, wherein the commercial power system comprises 220V commercial power and a rectification circuit connected with the commercial power; the solar photovoltaic power supply system comprises a solar cell plate, an overcharge protective circuit, a storage battery, an under-voltage signal circuit, an overdischarge protective circuit, a PWM inversion circuit, a rectification circuit and a switching circuit which are orderly connected in series; the switching circuit consists of a diode and a VMOS tube, wherein an input end of the diode is connected with an output end of the overdischarge protective circuit, and an output end of the diode is connected with G pole of the VMOS tube, and D pole of the VMOS tube is connected with electric loads. Because the quick on-off of the VMOS tube in the switching circuit is realized by utilizing DC, the system realizes the quick switch between the commercial power system and the solar photovoltaic power supply system, and the switch time reaches ms level, thereby not causing loads to restart and ensuring the safety of all loads.

Description

technical field [0001] The invention relates to a control system for switching power sources, in particular to a complementary uninterrupted power supply system of solar energy and commercial power. Background technique [0002] With the development of society, people pay more and more attention to energy saving. Solar energy has been widely used due to its non-polluting, renewable and inexhaustible advantages. Some areas have formed a dual mode of power supply using solar energy and mains power supply In this way, the solar power supply system mainly uses batteries to store electricity, but when the batteries are not charged in time due to weather or other reasons, the batteries will be in an over-discharged state due to low battery power and cannot supply power to the load. This requires a quick switch to the mains Power status. [0003] A Chinese patent discloses a "complementary solar uninterruptible power supply controller" (patent number: 200620153408.3), including a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/35H02H7/18
CPCY02E10/566Y02E10/56
Inventor 金步平陈哲艮
Owner ZHEJIANG PROV ENERGY RESOURCE INST
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