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Capacitance partial pressure isolated low power consumption standby power supply

A technology of capacitive voltage divider and standby power supply, applied in high-efficiency power electronic conversion, electrical components, reactive power compensation and other directions, can solve the problem of large standby power consumption of standby power supply, reduce harmonic current pollution, improve harmonic current, The effect of improving the power factor

Inactive Publication Date: 2009-06-24
张飞然
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  • Application Information

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Problems solved by technology

The invention solves the problem that the power consumption of the standby power supply of various electrical equipment is relatively large at present, and at the same time, it has the function of reactive power compensation

Method used

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  • Capacitance partial pressure isolated low power consumption standby power supply
  • Capacitance partial pressure isolated low power consumption standby power supply
  • Capacitance partial pressure isolated low power consumption standby power supply

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Embodiment Construction

[0026] 1, figure 1 It is a schematic diagram of the capacitor voltage divider rectifier filter circuit in the capacitor voltage divider isolation type low power consumption standby power supply of the present invention. Take an example to illustrate the calculation method of each parameter: For example, AC power supply voltage ACin=220V, AC power frequency 50Hz, design a DC power supply with no-load output voltage Vo=30V and maximum working current Io 50mA, according to formula 3 and formula Four, Imax=0.1A, C1=Imax / ACinω=0.1 / (220×6.28×50)≈1.45×E-6(F)=1.45UF, 1.5 microfarad 630 volt capacitor can be used; according to formula two, Get C2=(C1×ACin / 0.707Vo)-C1=(1.5×220 / 0.707×30)-1.5≈14UF, 15 microfarad 50 volt non-polar electrolytic capacitor can be used; the selection method of rectifier filter electrolytic capacitor C3 and Ordinary DC power supply is the same, you can choose 470 microfarads 50 volts. Zener tube DZ1 is used to absorb the pulse voltage in the power grid or the tran...

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Abstract

The invention aims to provide a capacitive voltage-division isolation low power-consumption standby power supply with power factor compensation function. The technical proposal for realizing the purpose includes that low-voltage ac is obtained through the capacitive voltage division of ac commercial power; then the low-voltage ac is processed with rectification filtering, low-voltage switch power supply isolation voltage-regulation to obtain stable ac voltage; the stable ac voltage is supplied for standby circuit of an electrical appliance as standby power supply. Capacitor is the most commonly used power factor compensation device; as the invention adopts capacitive voltage-division and is capacitive in power grid, and has power factor compensation effect. The invention solves the high standby power consumption problem of standby power supply in various electrical appliances, and has the reactive power compensation effect at the same time.

Description

Technical field [0001] The invention belongs to the technical field of DC stabilized power supplies, and particularly relates to a capacitor voltage divider isolation type low power consumption standby power supply with power factor compensation function. Background technique [0002] The global energy is facing a crisis. In 2000, the International Energy Agency put forward the “1 Watt Plan” to reduce the standby energy consumption of all electrical appliances around the world to 1 watt in 10 years. For this reason, the European Union promised to reduce standby energy consumption year by year, and by 2010, the standby energy consumption of most equipment will be reduced to 1 watt; the US Environmental Protection Agency and the Department of Energy have also launched the "Energy Star" program; In 2002, China began to formulate China's "1 Watt Plan" and proposed to upgrade the "standby energy consumption to 1 Watt" to the industry standard. [0003] At present, the number of color ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/12H02M1/42H02J3/18
CPCY02B70/16Y02B70/126Y02E40/30Y02B70/10
Inventor 张飞然张亦翔张幼彬
Owner 张飞然
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