CN1346173A - Self-correction step-up active filtering switch power source - Google Patents
Self-correction step-up active filtering switch power source Download PDFInfo
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- CN1346173A CN1346173A CN 00116126 CN00116126A CN1346173A CN 1346173 A CN1346173 A CN 1346173A CN 00116126 CN00116126 CN 00116126 CN 00116126 A CN00116126 A CN 00116126A CN 1346173 A CN1346173 A CN 1346173A
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Abstract
The self-correcting step-up active filter switch power supply consists of six portions of protection inhibit circuit, radio-frequency interference filter circuit, commutating circuit, correcting step-up circuit, high-frequency filter circuit and D.C. output voltage circuit. It is set between power supply and load, and possesses the following characteristics; raising power factor, reducing total harmonic filtering of current, inhibiting radio-frequency interference and obtaining high-quality D.C. voltage, can be extensively used for power supply filtering of electric equipment.
Description
The present invention relates to a kind of self-correction step-up active filtering switch power source.It is to correct the harmonic wave of electrical appliance generation and the filter power supply of power factor.
At present, the required direct voltage of various electric equipments all is to adopt alternating voltage to be obtained by capacitor filtering behind rectifier rectification again.This to obtain direct voltage mode power factor by capacitor filtering by rectifier again after to ac voltage rectifier low, and the total harmonic wave of electric current is big, and the utmost point is unfavorable for the utilance of electric energy and power supply is caused severe contamination, even causes fire and damage electronic equipment.
The purpose of this invention is to provide a kind of filter power supply, it can not only make various electric equipments obtain high-quality direct-current working volts, and can suppress radio frequency interference, improve power factor, reduce the total harmonic wave of electric current,, reduce the purpose of power pollution to reach the raising utilization rate of electrical.
The object of the present invention is achieved like this: be provided with the self-correction step-up active filtering switch power source circuit of being made up of diode, field effect transistor, rectifier, resistance, electric capacity, coil, fuse, piezo-resistance in the self-correction step-up active filtering switch power source; it is arranged between AC power and the load; suppress circuit by protection, radio frequency interference filter circuit, rectification circuit, correction step-up circuit, high-frequency filter circuit, dc voltage output circuit six parts are formed.Protection suppresses circuit and is made of fuse F and piezo-resistance RV; The radio frequency interference filter circuit is made of capacitor C 1, C2, C3, C4, inductance L; Rectification circuit is made of diode D1, D2, D3, D4; The correction step-up circuit is made of resistance R 1, R2, R3, R4, R5, R6, step-up transformer T, rectifier A, field effect transistor Q, forward conduction diode D; Filter circuit is made of electrochemical capacitor C5; VD is made of R7, R8, R9.Wherein rectifier A is made of error amplifier 1, corrector 2, zero-crossing detector 3, phase inverter 4, identifier 5, trigger 6, reference voltage 7, deviation amplifier 8, starter 9.
Owing to adopt such scheme, can when obtaining the high-quality direct voltage, power factor reach more than 0.99, the total harmonic wave of electric current reaches below 10%.
Below comprehensive accompanying drawing and implement that the present invention is further described.
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is a frame principle figure of the present invention.
F is a fuse among Fig. 1; RV is a piezo-resistance; C1, C2, C3, C4 are the radio frequency interference filter capacitors; L is the radio frequency interference filter inductance; D1, D2, D3, D4 are rectifier diodes; R1, R2 are half-sinusoid dc pulse moving voltage divider resistances; T is a step-up transformer; A is a rectifier; R3 is a current-limiting resistance; Q is the switched field effect pipe; D5 is the forward conduction diode; R4, R5, R6 are dc partial voltage resistance; C5 is the pulse voltage electrolytic capacitor filter; R7, R8, R9 are the VD divider resistances.
1 narrate circuit working principle of the present invention in conjunction with the accompanying drawings now, alternating voltage AC is through overcurrent fuse F and transient state suppressing piezo-resistance RV after energized, the rfi filter of being made up of capacitor C 1, C2, C3, C4 and inductance L filters radio frequency interference, obtains 100HZ half-sinusoid dc pulse moving voltage again after rectifier D1, D2, D3, D4 rectification.This voltage by electrochemical capacitor C5 filtering, obtains a low voltage starting, operation DC voltage by the elementary and diode D5 of step-up transformer T after divider resistance R5, R6 dividing potential drop.This voltage is input to the starter 9 in the rectifier A, produces a transient state starting impulse voltage.This voltage is input to trigger 6 again, by trigger 6 outputs one trigger impulse voltage, makes field effect transistor Q conducting through resistance R 3, at this moment step-up transformer T energy storage.After pulse voltage finishes, field effect transistor Q turn-offs, the elementary generation high-voltage pulse of step-up transformer T, be coupled to secondary through step-up transformer T, on secondary, produce an action of low-voltage pulse voltage, this pulse voltage is input to the zero-crossing detector 3 in the rectifier A again, by output one pulse voltage after zero-crossing detector 3 zero passage detection.This pulse voltage is input to phase inverter 4, exports the pulse voltage of required phase place to identifier 5 by phase inverter 4 again.The direct voltage that is obtained by divider resistance R6 dividing potential drop is input to the deviation amplifier 8 in the rectifier A, carries out deviation with reference voltage 7 and amplifies.Deviation voltage by deviation amplifier 8 outputs is input to error amplifier 1 with the 100HZ half-sinusoid dc pulse moving voltage that is obtained by resistance R 2 dividing potential drops.Voltage after the error computing is input to corrector 2 again.2 li of correctors the voltage after the error computing is revised, the required correction voltage that obtains is input to identifier 5 again.The pulse voltage that phase inverter 4 the is exported voltage that 2 outputs have been revised according to corrector is discerned at identifier 5, to obtain the pulse voltage of required frequency.This pulse voltage is input to trigger 6 again, the trigger impulse voltage that is produced removes to control field effect transistor Q through resistance R 3, make field effect transistor Q conducting, this moment, step-up transformer T began energy storage again again, and after trigger impulse voltage finished, field effect transistor Q turn-offed, the elementary high-voltage pulse that produces again of step-up transformer T, be coupled to secondaryly through step-up transformer T, the action of low-voltage pulse voltage that produces on secondary is input to the zero-crossing detector 3 in the rectifier A again, and a new duty cycle begins again.Through the high frequency periodic duty, on electrochemical capacitor C6, just can obtain one and stablize voltage boosting dc voltage DC.By the dc partial voltage of resistance R 7, R8, R9, also can obtain various direct voltage.Pass through self-correction step-up active filtering switch power source filtering according to the height and the phase place of input sine wave voltage like this, make input current and input voltage have same phase and same waveform as, effectively reduced the total harmonic wave of electric current, improved power factor, reduce power pollution to reach, improve the purpose of utilization rate of electrical.
Claims (1)
- A kind of self-correction step-up active filtering switch power source; in self-correction step-up active filtering switch power source, be provided with the self-correction step-up active filtering switch power source circuit of forming by diode, field effect transistor, rectifier, resistance, electric capacity, coil, fuse, piezo-resistance; it is arranged between AC power and the load; suppress circuit by protection, radio frequency interference filter circuit, rectification circuit, correction step-up circuit, high-frequency filter circuit, dc voltage output circuit six parts are formed.Protection suppresses circuit and is made of fuse F and piezo-resistance RV; The radio frequency interference filter circuit is made of capacitor C 1, C2, C3, C4, inductance L; Rectification circuit is made of diode D1, D2, D3, D4; The correction step-up circuit is made of resistance R 1, R2, R3, R4, R5, R6, step-up transformer T, rectifier A, field effect transistor Q, forward conduction diode D; Filter circuit is made of electrochemical capacitor C5; VD is made of R7, R8, R9.Wherein rectifier A is made of error amplifier 1, corrector 2, zero-crossing detector 3, phase inverter 4, identifier 5, trigger 6, reference voltage 7, deviation amplifier 8, starter 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00116126 CN1346173A (en) | 2000-09-26 | 2000-09-26 | Self-correction step-up active filtering switch power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00116126 CN1346173A (en) | 2000-09-26 | 2000-09-26 | Self-correction step-up active filtering switch power source |
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| CN1346173A true CN1346173A (en) | 2002-04-24 |
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| CN 00116126 Pending CN1346173A (en) | 2000-09-26 | 2000-09-26 | Self-correction step-up active filtering switch power source |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005101638A1 (en) * | 2004-04-16 | 2005-10-27 | System General Corp. | Discontinuous mode pfc controller having a power saving modulator and operation method thereof |
| CN100352151C (en) * | 2004-01-12 | 2007-11-28 | 南京航空航天大学 | Power factor correction transducer capable of parallel working |
| CN101132132B (en) * | 2006-08-25 | 2011-05-18 | 佛山市顺德区顺达电脑厂有限公司 | Power factor adjusting device and power supply system |
| CN101102079B (en) * | 2006-07-03 | 2011-12-21 | 半导体元件工业有限责任公司 | Power factor correction circuit and method therefor |
| CN101383218B (en) * | 2008-06-26 | 2012-05-09 | 复旦大学 | Radio frequency electric power for generating four-pole electric field |
| CN109194104A (en) * | 2018-09-17 | 2019-01-11 | 镇江博慧自动化技术研究院有限公司 | A kind of linear high stable DC filtering circuit |
-
2000
- 2000-09-26 CN CN 00116126 patent/CN1346173A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352151C (en) * | 2004-01-12 | 2007-11-28 | 南京航空航天大学 | Power factor correction transducer capable of parallel working |
| WO2005101638A1 (en) * | 2004-04-16 | 2005-10-27 | System General Corp. | Discontinuous mode pfc controller having a power saving modulator and operation method thereof |
| CN1938932B (en) * | 2004-04-16 | 2010-09-29 | 崇贸科技股份有限公司 | Discontinuous mode PFC controller with energy-saving modulator and its operating method |
| CN101102079B (en) * | 2006-07-03 | 2011-12-21 | 半导体元件工业有限责任公司 | Power factor correction circuit and method therefor |
| CN101132132B (en) * | 2006-08-25 | 2011-05-18 | 佛山市顺德区顺达电脑厂有限公司 | Power factor adjusting device and power supply system |
| CN101383218B (en) * | 2008-06-26 | 2012-05-09 | 复旦大学 | Radio frequency electric power for generating four-pole electric field |
| CN109194104A (en) * | 2018-09-17 | 2019-01-11 | 镇江博慧自动化技术研究院有限公司 | A kind of linear high stable DC filtering circuit |
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