CN107565810A - A kind of strong load capacity protocol converter of High Power Factor and its control strategy - Google Patents
A kind of strong load capacity protocol converter of High Power Factor and its control strategy Download PDFInfo
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- CN107565810A CN107565810A CN201710702436.9A CN201710702436A CN107565810A CN 107565810 A CN107565810 A CN 107565810A CN 201710702436 A CN201710702436 A CN 201710702436A CN 107565810 A CN107565810 A CN 107565810A
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- power factor
- protocol converter
- circuit
- converter
- control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a kind of High Power Factor protocol converter and its control strategy, protocol converter includes circuit of power factor correction, electric main input is exported after circuit of power factor correction rectification to DC-DC converter, DC-DC converter exports the power supply of certain specification, is supplied to protocol converter MBUS control circuit；Control strategy is：When protocol converter MBUS communicating circuits do not work, complete machine power is relatively low, not startup power factor correcting circuit, i.e., control circuit does not export Q1 gate drive signal；When protocol converter MBUS communicating circuits work, complete machine power is larger, now startup power factor correcting circuit, i.e., the pulsewidth waveform control output Q1 changed with pulse width by sinusoidal rule gate drive signal；Protocol converter power factor of the present invention is high, and external harmonic wave interference is small, adapts to field application demand.
Description
Technical field
The present invention relates to intelligent grid field, the strong load capacity protocol converter of specifically a kind of High Power Factor and its control
System strategy.
Background technology
State Grid Corporation of China proposes the requirement of " actively promoting electricity, water, air and heat ' multiple-in-one ' collection " in June, 2015,
The work of water, electricity, gas " three tables " integral collecting is planned, innovation copies and accepts business model, realizes the public utility charges such as water, electricity, gas
The major reform of mode.Realize all standing of taiwan area ammeter data collection and utilize the wireless collection net of ammeter on the basis of collection entirely
Network is realized to water meter, all standing of gas meter and full collection.The two-way collection in real time of water meter, gas meter data can be realized, is ladder
Aqueous vapor price, pre-payment etc. lay the foundation.Therefore, the research and development of protocol converter are imperative.Establish water, electricity, gas, hot field letter
Resources Sharing Mechanism is ceased, to Zone by Conforming Social Resources, promotes the construction of intelligent community, creating smart city all has positive effect.Mesh
Before, the whole world is saved sustainable development of the energy for China and had very important significance all in the state of energy scarcity.Pass
Manual metering (water, electricity, gas, heat) mode error of system is big, workload is big, not only inconvenient but also dangerous.By computer technology, net
The newest research results of network technology and microelectric technique are applied to kilowatt meter reading-out system, it is not necessary to which personnel reach the spot with regard to that can complete data
Automatic data collection, timing are sent and monitoring in real time, saves time, human and material resources, improves operating efficiency.And real-time user
Using data, be advantageous to the monitoring management that administrative department realizes the energy, improve utilization benefit, be to realize that energy dispatching is automatic in the future
The basis of change.
When protocol converter MBUS buses work, power reaches 30 watts or so.When power factor is low, harmonic wave is caused to power network
Interference.In order to improve the input power factor of protocol converter, existing protocol converter has used passive valley fill circuit power
Factor correcting technology.
The content of the invention
The present invention provides a kind of strong load capacity protocol converter of High Power Factor and its control strategy, it is therefore intended that uses
Active power factor correction technology solves power factor and improves and reduce external interference problem, reduces input harmonics content, subtracts
Few pollution to power network.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of strong load capacity protocol converter of High Power Factor, including circuit of power factor correction, electric main input
Exported after circuit of power factor correction rectification and export the power supply of certain specification to DC-DC converter, DC-DC converter, be supplied to
Protocol converter MBUS control circuit；Circuit of power factor correction concrete structure：ACN, ACL input for electric main, the two
It is connected to rectifier bridge BD1 ac input ends；Rectifier bridge BD1 output cathodes end is connected to electric capacity CX1, inductance L1, sampling resistor R1；
Sampling resistor R1 is connected to divider resistance R2；The sampled voltage that R1 and R2 is formed is connected to the sampling of protocol converter control chip
Circuit；Inductance L1 is connected to metal-oxide-semiconductor Q1, diode D1；Metal-oxide-semiconductor Q1 source electrode is connected to rectifier bridge BD1 negative poles；Metal-oxide-semiconductor Q1's
Grid is connected to the drive signal of protocol converter control circuit output；Diode D1 is connected to filter capacitor EC1；Filter capacitor
EC1 negative poles are connected to rectifier bridge BD1 negative poles.
Preferably, the circuit of power factor correction is made using singlechip chip control.
Preferably, the control strategy of the strong load capacity protocol converter of High Power Factor, control strategy are：In protocol conversion
When device MBUS communicating circuits do not work, complete machine power is relatively low, not startup power factor correcting circuit, i.e. control circuit is not defeated
Go out Q1 gate drive signal；When protocol converter MBUS communicating circuits work, complete machine power is larger, now starts work(
Rate factor correcting circuit, i.e., the pulsewidth waveform control output Q1 changed with pulse width by sinusoidal rule gate drive signal.
The beneficial effects of the invention are as follows：
1. use Active Power Factor Correction Technology so that power factor reaches more than 95%, and externally interference is few, keeps away
The influence to communication is exempted from.
2. using MCU driving circuit of power factor correction, reduce element use, reduce cost, improve reliable
Property.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is the system of a kind of strong load capacity protocol converter of High Power Factor of the present invention and its control strategy schematic diagram
Connection figure.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
As shown in figure 1, the present invention discloses a kind of strong load capacity protocol converter of High Power Factor, including power factor school
Positive circuit, electric main input are exported after circuit of power factor correction rectification to DC-DC converter, DC-DC converter output one
The power supply of set pattern lattice, it is supplied to protocol converter MBUS control circuit；Circuit of power factor correction concrete structure：ACN、ACL
Inputted for electric main, the two is connected to rectifier bridge BD1 ac input ends；Rectifier bridge BD1 output cathodes end is connected to electric capacity
CX1, inductance L1, sampling resistor R1；Sampling resistor R1 is connected to divider resistance R2；The sampled voltage that R1 and R2 is formed is connected to association
Discuss the sample circuit of converter control chip；Inductance L1 is connected to metal-oxide-semiconductor Q1, diode D1；Metal-oxide-semiconductor Q1 source electrode is connected to whole
Flow bridge BD1 negative poles；Metal-oxide-semiconductor Q1 grid is connected to the drive signal of protocol converter control circuit output；Diode D1 connections
To filter capacitor EC1；Filter capacitor EC1 negative poles are connected to rectifier bridge BD1 negative poles.
The circuit of power factor correction is made using singlechip chip control, has been lacked element use, has been reduced cost, has carried
High reliability.
The control strategy of the strong load capacity protocol converter of High Power Factor, control strategy are：In protocol converter MBUS
When communicating circuit does not work, complete machine power is relatively low, not startup power factor correcting circuit, i.e., control circuit does not export Q1's
Gate drive signal；When protocol converter MBUS communicating circuits work, complete machine power is larger, now startup power factor
Correcting circuit, i.e., the pulsewidth waveform control output Q1 changed with pulse width by sinusoidal rule gate drive signal.
Instantiation：During protocol converter MBUS not meter readings, complete machine power is smaller, approximately less than 5W, is now not turned on work(
Rate factor adjustment circuit.When protocol converter MBUS meter readings, complete machine power is larger, about 30W, now opens power factor adjustment
Circuit.Driving pulse, single-chip microcomputer memory storage sine switch periods value are sent using SCM PWM mouth, driving metal-oxide-semiconductor works in
8KHZ frequencies.Single-chip microcomputer is sampled to DC bus-bar voltage, and closed loop is adjusted.Metal-oxide-semiconductor Cycle by Cycle excessively stream is controlled using hardware circuit
Protection, electric current reach setting value, that is, turn off metal-oxide-semiconductor driving.
Principle：Using chip detection input voltage, detection input current, suitable drive signal is provided so that input electricity
Stream tracking input voltage sinusoidal waveform, so as to improve power factor.
The embodiments of the present invention described above are not intended to limit the scope of the present invention.It is any in the present invention
Spirit and principle within the modifications, equivalent substitutions and improvements made etc., should be included in the claim protection model of the present invention
Within enclosing.
Claims (3)
1. a kind of High Power Factor protocol converter, it is characterised in that including circuit of power factor correction, electric main input warp
Exported after circuit of power factor correction rectification and export the power supply of certain specification to DC-DC converter, DC-DC converter, be supplied to association
Discuss converter MBUS control circuit；Circuit of power factor correction concrete structure：ACN, ACL input for electric main, and the two connects
It is connected to rectifier bridge BD1 ac input ends；Rectifier bridge BD1 output cathodes end is connected to electric capacity CX1, inductance L1, sampling resistor R1；Adopt
Sample resistance R1 is connected to divider resistance R2；The sampled voltage that R1 and R2 is formed is connected to the sampling electricity of protocol converter control chip
Road；Inductance L1 is connected to metal-oxide-semiconductor Q1, diode D1；Metal-oxide-semiconductor Q1 source electrode is connected to rectifier bridge BD1 negative poles；Metal-oxide-semiconductor Q1 grid
Pole is connected to the drive signal of protocol converter control circuit output；Diode D1 is connected to filter capacitor EC1；Filter capacitor
EC1 negative poles are connected to rectifier bridge BD1 negative poles.
2. the strong load capacity protocol converter of High Power Factor according to claim 1, it is characterised in that the power factor
Correcting circuit is made using singlechip chip control.
3. the control strategy of the strong load capacity protocol converter of High Power Factor according to claim 1, it is characterised in that control
Strategy processed is：When protocol converter MBUS communicating circuits do not work, complete machine power is relatively low, not startup power factor correcting
Circuit, i.e. control circuit do not export Q1 gate drive signal；When protocol converter MBUS communicating circuits work, complete machine power supply
Power is larger, now startup power factor correcting circuit, i.e., the pulsewidth waveform control changed with pulse width by sinusoidal rule is defeated
Go out Q1 gate drive signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710702436.9A CN107565810A (en) | 2017-08-16 | 2017-08-16 | A kind of strong load capacity protocol converter of High Power Factor and its control strategy |
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| CN201710702436.9A CN107565810A (en) | 2017-08-16 | 2017-08-16 | A kind of strong load capacity protocol converter of High Power Factor and its control strategy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108289058A (en) * | 2018-03-14 | 2018-07-17 | 安徽南瑞中天电力电子有限公司 | A kind of energy source gateway setting MBUS bus voltages |
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Application publication date: 20180109 |