CN110138185A - The misphase formula full-bridge inverter current sharing control method of AC power source feeding mechanism - Google Patents
The misphase formula full-bridge inverter current sharing control method of AC power source feeding mechanism Download PDFInfo
- Publication number
- CN110138185A CN110138185A CN201810105783.8A CN201810105783A CN110138185A CN 110138185 A CN110138185 A CN 110138185A CN 201810105783 A CN201810105783 A CN 201810105783A CN 110138185 A CN110138185 A CN 110138185A
- Authority
- CN
- China
- Prior art keywords
- full
- bridge inverter
- signal
- pulse width
- width modulation
- 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.)
- Granted
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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
Abstract
The present invention discloses a kind of misphase formula full-bridge inverter current sharing control method of AC power source feeding mechanism, it includes a feedback control circuit, one Dead band controller, one first full-bridge inverter, one second full-bridge inverter and a delay circuit, the output end of the Dead band controller is electrically connected with the input terminal of the first full-bridge inverter, the input terminal of the delay circuit is connected to the Dead band controller, between the first full-bridge inverter, the output end of the delay circuit is electrically connected with the input terminal of the second full-bridge inverter, and set of pulses width modulation signal is received by the delay circuit, when the delay circuit receives the group pulse width modulation, then handled according to a time delay control, adjust the group pulse width modulation signal, generate another group pulse width modulation signal, so that the first full-bridge inverter and the second full-bridge inverter Output voltage phase cross-over 180 degree and consistent, to achieve the purpose that electric current flows effect after reducing manufacturing cost and reaching parallel connection.
Description
Technical field
The present invention is to be related to a kind of AC power source feeding mechanism, more particularly, to a kind of misphase of AC power source feeding mechanism
Formula full-bridge inverter current sharing control method.
Background technique
Pulse modulation circuit in traditional AC power source feeding mechanism usually receives one group of input letter by an input circuit
Number and one group of triangle carrier signal, the input circuit include two identical amplifying circuits, and connected by two amplifying circuits
Two Dead band controllers are connect, two full-bridge inverters are reconnected, can once export two voltage signals, but there is output electricity
The problem for pressing the distortion factor larger.
In the prior art, there is the pulse modulation circuit of another alternating expression, equally pass through an input circuit and receive one
Group input signal and two groups of triangle carrier signals, and the input circuit equally includes two identical amplifying circuits, passes through two
Amplifying circuit connects two Dead band controllers, although reduce distortion, but it is in parallel to generate two groups of full-bridge inverters
The uneven problem of electric current afterwards.
According in the prior art, there are the pulse modulation circuits of AC power source feeding mechanism, and there is the output voltage distortion factor to ask
The problem of topic, parallel-current are unequal, manufacturing cost increases, still needs the necessity for being proposed more solution.
Summary of the invention
In view of above-mentioned problem of the prior art, the main object of the present invention is to provide a kind of AC power source feeding mechanism
Misphase formula full-bridge inverter current sharing control method, is designed and improves for pulse modulation circuit, can reduce manufacture at
This and electric current flows after achieving the effect that parallel connection.
The technical way taken to reach above-mentioned purpose is to enable the misphase formula of above-mentioned AC power source feeding mechanism complete
Bridge inverter current sharing control method is to connect one first full-bridge inverter and a delay circuit by a Dead band controller
It is connected between the Dead band controller, one second full-bridge inverter, this method mainly executes following steps by the delay circuit:
Receive one first group pulse width modulation signal；
It is handled according to a time delay control, adjusts the first group pulse width modulation signal, generates one second group pulse
Width modulation signal, phase differ 180 degree with the first group pulse width modulation signal；
By same feedback control circuit, so that first inverter, the output voltage of second inverter are consistent, to enable
Electric current after parallel connection flows.
Preferably, the time delay control processing includes a delay phase 180 degree.
According to the above method, which receives the first group pulse width modulation signal of the Dead band controller, this prolongs
Slow circuit is handled according to the time delay control, adjusts that the first group pulse width modulation signal, to generate second group pulse wide
Modulating signal is spent, phase differs 180 degree with the first group pulse width modulation signal, to reach the effect of output ripple reduction
Can, output filter volume be reduced whereby, reduce manufacturing cost；Using same feedback control modulation route, so that this is first complete
Bridge inverter, the output voltage of the second full-bridge inverter are consistent, to achieve the purpose that electric current flows effect after parallel connection.
The another technical way taken to reach above-mentioned purpose is to enable the above-mentioned AC power source feeding mechanism include:
One input circuit has a signal output end；
One Dead band controller, has a signal input part and binary signal output end, and the signal of the Dead band controller inputs
End is electrically connected the signal output end of the input circuit；
One first full-bridge inverter, have binary signal input terminal and a signal output end, the two of the first full-bridge inverter
Signal input part is electrically connected with the binary signal output end of the Dead band controller；
One second full-bridge inverter has binary signal input terminal and a signal output end；
One delay circuit has binary signal input terminal and binary signal output end, the binary signal input terminal electricity of the delay circuit
It is connected between the Dead band controller, the first full-bridge inverter, the binary signal output end of the delay circuit and second full-bridge
The binary signal input terminal of inverter is electrically connected；
Wherein, the binary signal input terminal of the delay circuit receives one first group pulse width modulation signal, and with the time
Delay control adjust the first group pulse width modulation signal, generate one second group pulse width modulation signal, its phase with
The first group pulse width modulation signal differs 180 degree, which exports second group pulse by binary signal output end
Width modulation signal is to the second full-bridge inverter, so that the output electricity of the first full-bridge inverter and the second full-bridge inverter
Pressure pressure phase cross-over 180 degree and the first full-bridge inverter, the output voltage of the second full-bridge inverter are consistent, to enable simultaneously
Electric current after connection flows.
Preferably, the input circuit has more more than one signal input part, the signal input part of the input circuit
A control signal is generated to receive a sinusoidal reference signals, a feedback signal, and according to a triangle carrier signal.
Preferably, the input circuit includes a feedback control circuit.
Preferably, the signal input part of the Dead band controller receives the control signal of input circuit output, so that
The Dead band controller exports one first group pulse width modulation signal.
Preferably, the first full-bridge inverter is produced according to the one first group pulse width modulation signal that the Dead band controller exports
Raw one first output voltage signal；The delay circuit exports one second group pulse width modulation signal extremely by binary signal output end
The second full-bridge inverter, so that one second output voltage signal of the second full-bridge inverter generation and the first full-bridge change of current
The output voltage phase cross-over 180 degree of device can reduce output ripple and reduce output filter volume, and due to using
Same feedback control circuit keeps the first full-bridge inverter consistent with the second full-bridge inverter output voltage, to reach in parallel
Flow.
Preferably, the AC power source feeding mechanism further comprises an output filter；The first full-bridge inverter is somebody's turn to do
First output voltage signal, second output voltage signal are sent to the output filter respectively by the second full-bridge inverter.
According to above-mentioned construction, which receives the first group pulse width modulation signal of the Dead band controller, this prolongs
Slow circuit is handled according to the time delay control, adjusts that the first group pulse width modulation signal, to generate second group pulse wide
Spend modulating signal, phase differs 180 degree with the first group pulse width modulation signal so that the first full-bridge inverter with this
The output voltage phase cross-over 180 degree of two full-bridge inverters, to reach the efficiency of output ripple reduction, reduce output filtering whereby
Body product achievees the purpose that reduce manufacturing cost, and due to using same feedback control circuit, make the first full-bridge inverter with
Second full-bridge inverter output voltage is consistent, to achieve the purpose that electric current flows effect after parallel connection.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein,
Fig. 1 is the circuit framework block diagram of presently preferred embodiments of the present invention；
Fig. 2 is the current sharing control method schematic diagram of presently preferred embodiments of the present invention.
Description of symbols:
10 input circuit, 20 Dead band controller
30 first full-bridge inverter, 40 second full-bridge inverter
50 delay circuit, 60 output filter
Specific embodiment
With the following drawings and preferred embodiments of the present invention, the present invention is further explained to reach predetermined goal of the invention institute
The technological means taken.
It about presently preferred embodiments of the present invention, please refers to shown in Fig. 1, including an input circuit 10, a dead zone function
Device 20, one first full-bridge inverter 30, one second full-bridge inverter 40, a delay circuit 50 and an output filter 60；Its
In, which has more than one signal input part and a signal output end, and the signal of the input circuit 10 inputs
End generates a control signal to receive a sinusoidal reference signals, a feedback signal, and according to a triangle carrier signal；Yu Ben
The input circuit includes a feedback control circuit in preferred embodiment；The Dead band controller 20 includes more than one inverter.
The Dead band controller 20 has a signal input part and binary signal output end, and the signal of the Dead band controller 20 is defeated
Enter the signal output end that end is electrically connected the input circuit 10, and receives the control signal of the input circuit 10 output；This first
Full-bridge inverter 30 have binary signal input terminal and a signal output end, the binary signal input terminal of the first full-bridge inverter 30 with
The binary signal output end of the Dead band controller 20 is electrically connected, which exports according to the Dead band controller 20
One first group pulse width modulation signal generates one first output voltage signal.
Second full-bridge inverter 40 has binary signal input terminal and a signal output end；The delay circuit 50 has binary signal
Input terminal and binary signal output end, the binary signal input terminal of the delay circuit 50 be electrically connected to the Dead band controller 20, this first
Between full-bridge inverter 30, the binary signal input terminal of the binary signal output end of the delay circuit 50 and the second full-bridge inverter 40
Electrical connection, the binary signal output end of the delay circuit 50 receive the first group pulse width modulation of the Dead band controller 20 output
Signal, and controlled with a time delay and adjust the first group pulse width modulation signal, the delay circuit 50 is defeated by binary signal
Outlet exports one second group pulse width modulation signal to the second full-bridge inverter 40, so that the second full-bridge inverter 40 produces
The first output voltage signal phase cross-over 180 that raw one second output voltage signal and the first full-bridge inverter 30 generates
Degree achievees the purpose that reduction manufacturing cost to reach the efficiency of output ripple reduction, reduce output filter volume whereby, and
And due to using same feedback control circuit, keep the first full-bridge inverter consistent with the second full-bridge inverter output voltage, to reach
Electric current flows after to parallel connection；Finally, the first full-bridge inverter 30, the second full-bridge inverter 40 are respectively by the first output electricity
Pressure signal, second output voltage signal are sent to the output filter 60 and are filtered.
According to the construction of aforementioned presently preferred embodiments of the present invention, an AC power source is further provided in this preferred embodiment
It is first complete mainly to connect this by the Dead band controller 20 for the misphase formula full-bridge inverter current sharing control method of feeding mechanism
Bridge inverter 30 and the delay circuit 50 are connected between the Dead band controller 20, the second full-bridge inverter 40, are please referred to
Shown in Fig. 2, this method mainly executes following steps by the delay circuit 50:
Receive one first group pulse width modulation signal (S51) of the Dead band controller 20 output；
(S52) is handled according to a time delay control, the first group pulse width modulation signal is adjusted, generates one second group
Pulse width modulation signal (S53)；In this preferred embodiment, time delay control processing includes a delay phase 180 degree；
The second group pulse width modulation signal (S53) is exported, so that the second full-bridge inverter 40 and first full-bridge
The output voltage phase cross-over 180 degree of inverter 30 reduces output ripple, reduces output filter volume, to reduce manufacture
Cost.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, in the range of not departing from technical solution of the present invention, when the technology contents using the disclosure above make a little change or repair
Decorations are the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, technology according to the present invention are real
Matter any simple modification, equivalent change and modification to the above embodiments, still fall within the range of technical solution of the present invention
It is interior.
Claims (8)
1. a kind of misphase formula full-bridge inverter current sharing control method of AC power source feeding mechanism, which is characterized in that by one
Dead band controller connects one first full-bridge inverter and a delay circuit is connected to the Dead band controller, one second full-bridge changes
It flows between device, this method mainly executes following steps by the delay circuit:
Receive one first group pulse width modulation signal；
It is handled according to a time delay control, adjusts the first group pulse width modulation signal, generates one second group pulse width
Modulating signal, phase differ 180 degree with the first group pulse width modulation signal；
By same feedback control circuit, so that the first full-bridge inverter, the output voltage of the second full-bridge inverter are consistent,
To enable the electric current after parallel connection flow.
2. the misphase formula full-bridge inverter current sharing control method of AC power source feeding mechanism according to claim 1,
It is characterized in that, time delay control processing includes a delay phase 180 degree.
3. a kind of AC power source feeding mechanism, which is characterized in that the AC power source feeding mechanism includes:
One input circuit has a signal output end；
One Dead band controller has a signal input part and binary signal output end, the signal input part electricity of the Dead band controller
Connect the signal output end of the input circuit；
One first full-bridge inverter has binary signal input terminal and a signal output end, the binary signal of the first full-bridge inverter
Input terminal is electrically connected with the binary signal output end of the Dead band controller；
One second full-bridge inverter has binary signal input terminal and a signal output end；
One delay circuit, has binary signal input terminal and binary signal output end, and the binary signal input terminal of the delay circuit is electrically connected
Between the Dead band controller, the first full-bridge inverter, the binary signal output end of the delay circuit and the second full-bridge change of current
The binary signal input terminal of device is electrically connected；
Wherein, the binary signal input terminal of the delay circuit receives one first group pulse width modulation signal, and with a time delay
Control adjust the first group pulse width modulation signal, generate one second group pulse width modulation signal, phase and this first
Group pulse width modulation signal differs 180 degree, which exports the second group pulse width tune by binary signal output end
Varying signal is to the second full-bridge inverter, so that the output voltage phase of the first full-bridge inverter and the second full-bridge inverter
Staggeredly 180 degree and the first full-bridge inverter, the output voltage of the second full-bridge inverter are consistent, to enable the electricity after parallel connection
Stream flows.
4. AC power source feeding mechanism according to claim 3, which is characterized in that the input circuit has more more than one
Signal input part, the signal input part of the input circuit to receive a sinusoidal reference signals, a feedback signal, and according to
One triangle carrier signal generates a control signal.
5. AC power source feeding mechanism according to claim 3 or 4, which is characterized in that the input circuit includes a feedback
Control circuit.
6. AC power source feeding mechanism according to claim 4, which is characterized in that the signal input part of the Dead band controller
The control signal of input circuit output is received, so that the Dead band controller exports one first group pulse width modulation signal.
7. AC power source feeding mechanism according to claim 6, which is characterized in that the first full-bridge inverter is according to damned
One first group pulse width modulation signal of area controller output generates one first output voltage signal；The delay circuit passes through two
Signal output end exports one second group pulse width modulation signal to the second full-bridge inverter, so that the second full-bridge inverter
The output voltage phase cross-over 180 degree of one second output voltage signal and the first full-bridge inverter that generate, can reduce output
Ripple and reduce output filter volume, and due to using same feedback control circuit, make the first full-bridge inverter with
The second full-bridge inverter output voltage is consistent, to reach parallel current-sharing.
8. AC power source feeding mechanism according to claim 7, which is characterized in that the AC power source feeding mechanism is into one
Step includes an output filter；The first full-bridge inverter, the second full-bridge inverter respectively by first output voltage signal,
Second output voltage signal is sent to the output filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810105783.8A CN110138185B (en) | 2018-02-02 | 2018-02-02 | Parallel current sharing control method for staggered full-bridge converter of alternating current power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810105783.8A CN110138185B (en) | 2018-02-02 | 2018-02-02 | Parallel current sharing control method for staggered full-bridge converter of alternating current power supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110138185A true CN110138185A (en) | 2019-08-16 |
| CN110138185B CN110138185B (en) | 2022-04-19 |
Family
ID=67566918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810105783.8A Active CN110138185B (en) | 2018-02-02 | 2018-02-02 | Parallel current sharing control method for staggered full-bridge converter of alternating current power supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110138185B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332839A (en) * | 2011-08-23 | 2012-01-25 | 南京航空航天大学 | Cascade type time-interval variable-order multi-level static converter |
| CN102780221A (en) * | 2012-07-20 | 2012-11-14 | 上海交通大学 | System and method for controlling online type photovoltaic power generation microgrid without storage device |
| CN103346690A (en) * | 2013-07-05 | 2013-10-09 | 华为技术有限公司 | Multi-level inverter and power supply system |
| CN105846658A (en) * | 2016-03-23 | 2016-08-10 | 西安交通大学 | IGBT parallel static current sharing circuit |
-
2018
- 2018-02-02 CN CN201810105783.8A patent/CN110138185B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102332839A (en) * | 2011-08-23 | 2012-01-25 | 南京航空航天大学 | Cascade type time-interval variable-order multi-level static converter |
| CN102780221A (en) * | 2012-07-20 | 2012-11-14 | 上海交通大学 | System and method for controlling online type photovoltaic power generation microgrid without storage device |
| CN103346690A (en) * | 2013-07-05 | 2013-10-09 | 华为技术有限公司 | Multi-level inverter and power supply system |
| CN105846658A (en) * | 2016-03-23 | 2016-08-10 | 西安交通大学 | IGBT parallel static current sharing circuit |
Non-Patent Citations (1)
| Title |
|---|
| 刘萍: "交错并联BOOST电路的PFC均流技术研究", 《平顶山学院学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110138185B (en) | 2022-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104868493B (en) | Inverter and its control method | |
| CN106059365B (en) | For generating the bias voltage generator and method of the bias voltage of three-phase inverter | |
| CN104052304B (en) | Power conversion systems and operating methods | |
| CN104009618B (en) | The synchronous current-sharing control method and controller for driving parallel power module current transformer | |
| CN105144534B (en) | Inverter synchronizes | |
| CN106160457B (en) | DC converter and its operation method | |
| CN107786088A (en) | Power circuit, power supply circuit control method and storage medium | |
| CN107070228A (en) | A kind of plasma resonant vibration power-supply system based on optimal energy allocation | |
| CN102723872B (en) | Power supply apparatus and method for adjusting dead time | |
| CN102508183A (en) | Digital variable frequency PWM (Pulse Width Modulation) gradient amplifier with adaptively-controlled load | |
| CN104065270B (en) | Supply unit and arc component processing power source | |
| CN104158417A (en) | Control system and method for reducing switching loss of photovoltaic grid-connected inverter | |
| JP6148277B2 (en) | Control device for grid-connected inverter system | |
| CN110138185A (en) | The misphase formula full-bridge inverter current sharing control method of AC power source feeding mechanism | |
| CN207977893U (en) | AC power feeding mechanism | |
| CN217159658U (en) | High-power radio frequency power supply | |
| CN205004959U (en) | Industry resistance furnace control by temperature change frequency control device | |
| CN107634661A (en) | A kind of multi-channel DC out-put supply | |
| CN103944437B (en) | Supply unit and arc component processing power source | |
| CN111416537B (en) | Rectifier and modulation method thereof | |
| CN102684528A (en) | Self-adaptive dead-zone compensation method based on intelligent unit series high-voltage frequency converter | |
| CN109149989A (en) | A kind of inverter based on Induction Motor-Driven | |
| CN207124789U (en) | A kind of LED uses output power supply device | |
| CN105978378B (en) | A kind of circulation of inverter parallel connection detects and controls method | |
| CN109687730A (en) | A kind of electric power electric transformer system and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |