CN105656332B - A method of using rectification dead zone be low-voltage power supply - Google Patents
A method of using rectification dead zone be low-voltage power supply Download PDFInfo
- Publication number
- CN105656332B CN105656332B CN201610208578.5A CN201610208578A CN105656332B CN 105656332 B CN105656332 B CN 105656332B CN 201610208578 A CN201610208578 A CN 201610208578A CN 105656332 B CN105656332 B CN 105656332B
- Authority
- CN
- China
- Prior art keywords
- voltage
- low
- dead zone
- power supply
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
Abstract
The time of two zero crossings being detected by zero passage detection input microprocessor using the method that rectification dead zone is low-voltage power supply the invention discloses a kind of, mains frequency is calculated, according to the size formula of circuit filtering capacitanceCalculate filtered minimum voltage, with formula Uu=Um*sin (ω t+ Ф), inverse is needed to go out the phase angle of minimum voltage according to circuit, from ceiling voltage Umax to minimum voltage Umin, this section of time microprocessor by IO send out switching signal turn on the switch give low-voltage system charge.The present invention is powered using this dead zone voltage to low-voltage system, and space and cost is greatly saved, and effectively provides the power factor of product.
Description
Technical field
It is specifically a kind of to utilize the method that rectification dead zone is low-voltage power supply the present invention relates to a kind of method of supplying power to.
Background technology
Based on the electric circuit characteristic of low-power factor, voltage commutation post filtering capacitance at low voltage, is in discharge condition, this
When input voltage be less than capacitance both ends voltage, the present invention using this dead zone voltage give low-voltage system power, be greatly saved
Space and cost, and the power factor of product is effectively provided.
Invention content
The purpose of the present invention is to provide a kind of using the method that rectification dead zone is low-voltage power supply, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides the following technical solutions：
A method of using rectification dead zone be low-voltage power supply, pass through zero passage detection input microprocessor, detect two mistakes
The time of zero calculates mains frequency, according to the size formula of circuit filtering capacitanceFiltered minimum voltage is calculated, with formula Uu=Um*
Sin (ω t+ Ф) needs inverse to go out the phase angle of minimum voltage, from ceiling voltage Umax to minimum voltage according to circuit
Umin, this section of time microprocessor by IO send out switching signal turn on the switch give low-voltage system charge.
As further scheme of the invention：The process discharged using filter capacitor, input voltage are less than capacitance both ends
Voltage, input voltage dead time give low-voltage system power supply.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is supplied using this dead zone voltage to low-voltage system
Space and cost is greatly saved in electricity, and effectively provides the power factor of product.
Description of the drawings
Fig. 1 is to utilize the process that filter capacitor electric discharge is utilized in the method that rectification dead zone is low-voltage power supply；
Fig. 2 is the circuit diagram using the method that rectification dead zone is low-voltage power supply.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig.1 ~ 2, in the embodiment of the present invention, a method of using rectification dead zone it is low-voltage power supply, passes through zero passage
Input microprocessor is detected, the time of two zero crossings is detected, calculates mains frequency, it is public according to the size of circuit filtering capacitance
FormulaFiltered minimum voltage is calculated, with formula Uu
=Um*sin (ω t+ Ф) needs inverse to go out the phase angle of minimum voltage, from ceiling voltage Umax to minimum electricity according to circuit
Press Umin, this section of time microprocessor by IO send out switching signal turn on the switch give low-voltage system charge, pass through the method
Increase the load in voltage low side, the phase difference for reducing voltage and electric current improves circuit to improve following for input current
Power factor；The process discharged using filter capacitor, input voltage are less than the voltage at capacitance both ends, and input voltage dead time is given
Low-voltage system is powered, and the phase difference of voltage and electric current is reduced, to improve the power factor of complete machine.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (2)
1. a kind of utilizing the method that rectification dead zone is low-voltage power supply, which is characterized in that pass through zero passage detection input microprocessor, inspection
The time of two zero crossings is surveyed, mains frequency is calculated, according to the size formula of circuit filtering capacitanceCalculate filtered minimum voltage, with formula Uu=
Um*sin (ω t+ Ф) needs inverse to go out the phase angle of minimum voltage, from ceiling voltage Umax to minimum voltage according to circuit
Umin, this section of time microprocessor by IO send out switching signal turn on the switch give low-voltage system charge.
2. according to claim 1 utilize the method that rectification dead zone is low-voltage power supply, which is characterized in that utilize filter capacitor
The process of electric discharge, input voltage are less than the voltage at capacitance both ends, and input voltage dead time is powered to low-voltage system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208578.5A CN105656332B (en) | 2016-04-06 | 2016-04-06 | A method of using rectification dead zone be low-voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610208578.5A CN105656332B (en) | 2016-04-06 | 2016-04-06 | A method of using rectification dead zone be low-voltage power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105656332A CN105656332A (en) | 2016-06-08 |
| CN105656332B true CN105656332B (en) | 2018-08-21 |
Family
ID=56496054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610208578.5A Active CN105656332B (en) | 2016-04-06 | 2016-04-06 | A method of using rectification dead zone be low-voltage power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105656332B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4111581A4 (en) | 2020-02-28 | 2023-10-11 | Astec International Limited | Power measurements in switched mode power supplies |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336504Y (en) * | 1998-03-02 | 1999-09-01 | 哈尔滨蓝波高技术开发有限公司 | Automatic dynamic reactive compensation arrangement |
| US8451627B2 (en) * | 2007-11-16 | 2013-05-28 | Itron, Inc. | Devices and methods for converting alternating current (AC) power to direct current (DC) power |
| CN102081116B (en) * | 2009-12-01 | 2013-03-06 | 广芯电子技术(上海)有限公司 | Adaptive digital method for detecting zero crossing point of alternating voltage |
| CN102288814B (en) * | 2011-08-03 | 2013-11-13 | 苏州大学 | Real-time detection method for voltage dip |
| JP2013066274A (en) * | 2011-09-16 | 2013-04-11 | Diamond Electric Mfg Co Ltd | Power supply circuit |
| JP6075048B2 (en) * | 2012-12-11 | 2017-02-08 | サンケン電気株式会社 | Switching power supply control circuit |
-
2016
- 2016-04-06 CN CN201610208578.5A patent/CN105656332B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105656332A (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202276536U (en) | Static eliminator | |
| CN104748288B (en) | Soft start charging circuit and its control method | |
| WO2017076366A8 (en) | Five-voltage level inverter topology circuit, and three-phase and five-voltage level inverter topology circuit | |
| WO2012154810A3 (en) | Power conversion apparatus and methods employing variable-level inverters | |
| US9806526B2 (en) | Bi-directional direct-current-to-direct-current converter, grid-connected inverter system, and solar energy grid-connected inverter system | |
| CN106160651A (en) | A kind of system suppressing photovoltaic battery panel PID effect | |
| WO2012152619A3 (en) | Converter assembly | |
| CN105656332B (en) | A method of using rectification dead zone be low-voltage power supply | |
| CN107743005A (en) | A kind of method for suppressing asynchronous machine current harmonics | |
| CN203851010U (en) | Isolation-type uninterrupted power supply mains supply detection circuit | |
| CN202737735U (en) | Main power source circuit of variable-frequency air conditioner | |
| CN103545800B (en) | Air-conditioning capacitor discharge system | |
| EP2387153A3 (en) | Signal level crossing detector circuit | |
| CN205376403U (en) | Undervoltage protection ware is crossed to relay drive circuit and self -resuming formula | |
| CN202550915U (en) | Push-pull type inverter | |
| CN205566131U (en) | Utilize circuit of rectification blind spot for low pressure power supply | |
| CN202468255U (en) | Controller for direct-current frequency-conversion compressor | |
| CN204067924U (en) | A kind of box-type substation | |
| MY185958A (en) | An interactive electrostatic field high energy storage ac blocking capacitor | |
| CN107528333A (en) | Three-phase electricity balanced output circuit and method | |
| CN106026345A (en) | Anti-interference device of motor | |
| CN206472026U (en) | A kind of out-put supply change-over circuit of three-phase intelligent phase-controlled device | |
| CN206076911U (en) | A kind of anti-isolated island protection circuit from grid-connected energy storage device | |
| CN202918236U (en) | Novel generator voltage-stablizer | |
| CN203870423U (en) | Zero line automatic selection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210622 Address after: 201203 Building 2, 439 Chunxiao Road, Pudong New Area pilot Free Trade Zone, Shanghai Patentee after: SHANGHAI SINOMCU MICROELECTRONICS Co.,Ltd. Address before: Room 345, block B, building 1, 977 Shangfeng Road, Pudong New Area, Shanghai, 200120 Patentee before: SHANGHAI SINO-SAGE INTELLIGENT TECHNOLOGY Co.,Ltd. |