CN109613954A - A kind of modulated current feedback circuit of large-power broadband - Google Patents
A kind of modulated current feedback circuit of large-power broadband Download PDFInfo
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- CN109613954A CN109613954A CN201811626019.1A CN201811626019A CN109613954A CN 109613954 A CN109613954 A CN 109613954A CN 201811626019 A CN201811626019 A CN 201811626019A CN 109613954 A CN109613954 A CN 109613954A
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- 230000003321 amplification Effects 0.000 claims abstract description 33
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
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- 238000004458 analytical method Methods 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/66—Regulating electric power
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- General Physics & Mathematics (AREA)
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Abstract
The present invention provides a kind of modulated current feedback circuits of large-power broadband, including adjustable signal, and module, signal modulation module, power amplification circuit module, PWM phase modulation module, injection module, supplementary module occurs；The power amplification circuit module carries out reliable power amplification to the high-frequency modulation signal that front stage circuits transmit, and after PWM tune relative signal carries out phase controlling, generates high frequency voltage or electric current, and can inject a current into goal systems.The present invention uses the current feedback circuit of above-mentioned design, can generate that a series of large-power broadbands are modulated and phase can real-time control voltage or current, can be widely applied to the occasion for needing high-power modulated alternating-current voltage source or current source.
Description
[technical field]
The present invention relates to circuit design and analysis field, in particular to a kind of modulated electric current of large-power broadband occurs
Device.
[background technique]
During circuit design and debugging, needed in many cases, using high power adjustable stream source or electricity
Potential source.For example adjustable high-power current source or voltage source an equivalent harmonic source in power grid can be used, in power grid
Inject a harmonic voltage signal or harmonic current signal.It under normal circumstances, can be using based on switching tube and PWM technology
Mode designs a powerful current source, and by digital newspaper industry, controls the size and phase of output voltage and electric current,
Due to switching tube pressure resistance with higher and flow-resistant capacity, the high-power of power supply may be implemented, but switched frequency by switching tube
The influence of rate and the influence of digital control time precision, the large power supply of this topology are difficult to issue the voltage or electricity of high frequency
Stream.Another common power source design is realized based on analog circuit, i.e., the voltage of higher-frequency is issued using analog circuit
Signal, and power amplification is carried out, however in this scheme, the phase of signal is difficult to control, it is not easy to needed for being carried out to signal
Various operations, and passive network is generally used for using the power supply of this scheme, controllable voltage is generated for active electric network
Or electric current, especially alternating current active system, there are bigger difficulty.
[summary of the invention]
The purpose of the present invention is to provide a kind of modulated current feedback circuit of large-power broadband, realize that generation is a series of big
Power broadband is modulated and phase can real-time control voltage or current function.
To achieve the goals above, the present invention adopts the following technical scheme:
Module, signal modulation module, function occur for a kind of modulated current feedback circuit of large-power broadband, including adjustable signal
Rate amplification circuit module, PWM phase modulation module, injection module, supplementary module；
Module occurs for the adjustable signal for generating several phase locked signals to be modulated；
The signal modulation module carries out operation, synthesis modulation letter to the signal to be modulated that module output occurs for adjustable signal
Number；
The power amplification circuit module is used to carry out power amplification to the modulated signal that modulation is completed；
The PWM phase modulation module controls the phase of the signal after adjustment power amplification by PWM；
The injection module is used to that voltage signal to be converted to electric current letter when the output of PWM phase modulation module is voltage signal
Number, and the current signal is injected to goal systems；
The supplementary module includes power circuit and touch screen, and power circuit is that module, signal modulation occur for adjustable signal
Module, power amplification circuit module, PWM phase modulation module for power supply, touch screen realize the input of parameter and the display of operating status.
As an implementation, it includes several signal generating circuits, each signal that module, which occurs, for the adjustable signal
It is 1Hz to 1MHz that circuit, which occurs, for generating a modulated signal, the frequency range of the modulated signal, several signals occur
There is interconnection between circuit, the Phase synchronization of signal to be modulated occurs to control each signal generating circuit.
As an implementation, the signal modulation module is made of multiple integrated computation circuits, the integrated computation
Circuit includes add circuit, subtraction circuit, mlultiplying circuit, integrating circuit and differential circuit.
As an implementation, the power amplification circuit module includes muti-piece power amplification circuit, the muti-piece function
Rate amplifying circuit forms bridge architecture.
As an implementation, the PWM phase modulation module include inductor, capacitor, MOSFET, isolating transformer,
DSP chip, first voltage sensor and the first current sensor, position between the inductance and high-power amplifying circuit
Second voltage sensor and the second current sensor between the inductance and injection module.
As an implementation, the injection module is made of a powerful resistance, is connected to inductance and rear class
Between goal systems port.
Compared with the existing technology, the invention has the following advantages:
The modulated current feedback circuit of a kind of large-power broadband provided by the invention, using multiple letters based on analog circuit
The high-frequency voltage signal needed for module generates number occurs, and is modulated operation by modulation module, and then pass through power amplification
Circuit module amplifies signal, is adjusted in real time by phase of the adjustable PWM inductance to signal, and pass through injection module
Inject a current into goal systems, realize generate one high-power, broadband, modulated and controllable phase voltage or
The purpose of electric current.
Apparatus of the present invention structure is simple, reliable for operation, low cost, is applicable to the modulated voltage source of large-power broadband
Or the occasion of current source.
[Detailed description of the invention]
Fig. 1 is a kind of structural block diagram for the modulated current feedback circuit of large-power broadband that embodiment provides.
Fig. 2 is the functional block diagram for the signal modulation module that embodiment provides.
Fig. 3 is the functional block diagram for the power amplification circuit module that embodiment provides.
[specific embodiment]
The invention will be described in further detail with reference to the accompanying drawing.
Refering to Figure 1, the modulated current feedback circuit of a kind of large-power broadband provided in an embodiment of the present invention, including
Module 10, signal modulation module 20, power amplification circuit module 30, PWM phase modulation module 40, injection module occur for adjustable signal
50, supplementary module 60.
It includes several signal generating circuits that module 10, which occurs, for adjustable signal, when needing the end to an alternating current active network
When the current signal of mouth one modulation of injection, multiple AC signals, number, that is, institute of signal are generated by signal generating module first
The number of signal generator and the waveform of each signal generator generation signal are needed, is carried out by modulated signal to be generated reversed
Operation determines, e.g. broadband sine wave signal, broadband square-wave signal.Signal generating circuit is based on AD9833 chip and sets
Meter realizes that peripheral circuit connects resistance and a coupled capacitor, can be 1Hz to 1MHz (this with the frequency range of output signal
Broadband in text just refers to that frequency range up to 1Hz to 1MHz), has interconnection between multiple signal generating circuits, to
Realize that the Phase synchronization of signal occurs for multiple signal generating circuits.
10 connection signal modulation module 20 of module occurs for adjustable signal, i.e., adjustable signal generating module generates multiple wait adjust
Signal processed is sent into signal modulation module, and signal modulation module is constituted based on multiple integrated computation circuits, and structural block diagram is refering to figure
Shown in 2, add circuit, subtraction circuit, mlultiplying circuit, integrating circuit, differential circuit are arranged in parallel, and are in series with one respectively and are cut
Switch is changed, carries out selection use by switching switch, modulated signal can be treated and carry out addition, subtraction, multiplication, integral, micro-
The operation divided, thus the modulation of complete pair signals.
The electric current as needed for system to be implanted is larger, and the voltage of system port is also relatively high, after to modulation
Signal carry out voltage and Current amplifier, i.e. power amplification, in the present invention, power amplification circuit module 30 are based on high-power crystalline substance
Power amplification circuit is completed in the design of body pipe, carries out power amplification, including voltage amplification and electric current to the modulated signal of prime
Amplification.Power amplification circuit module uses muti-piece power amplification circuit to form bridge architecture simultaneously, such as shown in Fig. 3, power is put
Big circuit module forms bridge architectures using four pieces of power amplification circuits, and bridge architecture improves amplifying circuit pressure resistance and resistant to flow
The rated power of ability, power amplifier module is designed as 2kW；Also, due to amplifying circuit frequency band, bandwidth Design 10MHz is humorous
For wave distortion less than 0.01, signal-to-noise ratio is greater than 95dB, and effective amplification to high-frequency signal may be implemented.
Since there are ac voltage signals in system to be implanted, when controlling Injection Current, need pair
Amplified modulated signal carries out phase controlling, the PWM used in the present invention (Pulse width modulation) phase modulation
Module 40 is designed based on PWM controllable impedance, including inductor, capacitor, MOSFET (Metal-Oxide-Semiconductor
The abbreviation of Field-Effect Transistor, metal-oxide half field effect transistor), isolating transformer, dsp chip it is (flat as control
Platform), and first voltage sensor and the first current sensor between controllable impedance and power amplification circuit, it is respectively intended to
The phase of voltage and electric current before measuring controllable impedance, and the second voltage sensing between controllable impedance and injection module
Device and the second current sensor are respectively used to the phase of voltage and electric current after measurement controllable impedance；It can be real-time by PWM control
The value of equivalent inductance in circuit is adjusted, to adjust the phase of voltage and electric current in real time.
Injection module 50 is made of the resistance of one high-power (2000W), is connected to the target system of apparatus of the present invention and rear class
Between system, the conversion of voltage signal and current signal can be completed.When needing to provide an adjustable electricity to passive system
When pressure, i.e., when generator is equivalent to a voltage source, the high-power resistance of injection module can not be used, controllable impedance directly connects
Connect the passive network of rear class；And when needing to inject an adjustable electric current to an active electric network, it needs to connect injection module
It is connected between the inductor and active electric network in PWM phase modulation module, the voltage of prime is converted to electric current and has been injected by realization
In the system of source.
Supplementary module 60 described in the present embodiment includes power circuit and touch screen, and power circuit is that each module of system supplies
Electricity, touch screen realize generator parameter (such as the modulation format of signal, output size of current, phase and PWM controllable impedance
Control parameter) input function and generator operating status display function.
" first " " second " in above content is only for distinguishing, and does not express or imply relative importance or successively suitable
Sequence.
The modulated current feedback circuit of a kind of large-power broadband provided by the invention is occurred based on Analog Circuit Design signal
Module and signal modulation, power amplifier module, can occur the signal of high frequency band；Signal is realized by signal modulation module
Operation modulation function, the phase controlling of signal is realized by PWM phase modulation module；By the organic assembling of multiple functional modules,
It realizes and generates that one high-power, broadband, modulated and controllable phase electric current purpose.
Apparatus of the present invention structure is simple, reliable for operation, low cost, is applicable to the modulated voltage source of large-power broadband
Or the occasion of current source.
Claims (7)
1. a kind of modulated current feedback circuit of large-power broadband, which is characterized in that module, signal tune occurs including adjustable signal
Molding block, power amplification circuit module, PWM phase modulation module, injection module, supplementary module；
Module occurs for the adjustable signal for generating several phase locked signals to be modulated；
The signal to be modulated that adjustable signal module output occurs for the signal modulation module carries out operation, synthesizes modulated signal；
The power amplification circuit module is used to carry out power amplification to the modulated signal that modulation is completed；
The PWM phase modulation module controls the phase of the signal after adjustment power amplification by PWM；
The injection module is used to that voltage signal to be converted to current signal when the output of PWM phase modulation module is voltage signal, and
The current signal is injected to goal systems；
The supplementary module includes power circuit and touch screen, power circuit be adjustable signal occur module, signal modulation module,
Power amplification circuit module, PWM phase modulation module for power supply, touch screen realize the input of parameter and the display of operating status.
2. the modulated current feedback circuit of large-power broadband according to claim 1, which is characterized in that the adjustable signal
It includes several signal generating circuits that module, which occurs, and each signal generating circuit is for generating a modulated signal, the modulation
The frequency range of signal is 1Hz to 1MHz, has interconnection between several signal generating circuits, is occurred to control each signal
The Phase synchronization of signal to be modulated occurs for circuit.
3. the modulated current feedback circuit of large-power broadband according to claim 1, which is characterized in that the signal modulation
Module is made of multiple integrated computation circuits, and the integrated computation circuit includes add circuit, subtraction circuit, mlultiplying circuit, product
Parallel circuit and differential circuit.
4. the modulated current feedback circuit of large-power broadband according to claim 1, which is characterized in that the power amplification
Circuit module includes muti-piece power amplification circuit, and the muti-piece power amplification circuit forms bridge architecture.
5. the modulated current feedback circuit of large-power broadband according to claim 1, which is characterized in that the PWM phase modulation
Module includes inductor, capacitor, MOSFET, isolating transformer, dsp chip, is located at the inductance and high-power amplifying circuit
Between first voltage sensor and the first current sensor, between the inductance and injection module second voltage sensing
Device and the second current sensor.
6. the modulated current feedback circuit of large-power broadband according to claim 5, which is characterized in that the injection module
It is made of, is connected between inductance and the goal systems port of rear class a powerful resistance.
7. the modulated current feedback circuit of large-power broadband according to claim 5, which is characterized in that first voltage sensing
Device and the first current sensor are Hall sensor, and second voltage sensor and the second current sensor are hall sensing
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626019.1A CN109613954A (en) | 2018-12-28 | 2018-12-28 | A kind of modulated current feedback circuit of large-power broadband |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811626019.1A CN109613954A (en) | 2018-12-28 | 2018-12-28 | A kind of modulated current feedback circuit of large-power broadband |
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| Publication Number | Publication Date |
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| CN109613954A true CN109613954A (en) | 2019-04-12 |
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| CN201811626019.1A Pending CN109613954A (en) | 2018-12-28 | 2018-12-28 | A kind of modulated current feedback circuit of large-power broadband |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114006A (en) * | 2007-03-21 | 2008-01-30 | 辽宁荣信电力电子股份有限公司 | SVC signal generator |
| CN202217425U (en) * | 2011-09-30 | 2012-05-09 | 北京化工大学 | General modulation-demodulation experimental facility based on software radio |
| CN102904550A (en) * | 2012-09-26 | 2013-01-30 | 北京工业大学 | Multi-channel synchronous waveform generator based on AD9959 |
| CN202870132U (en) * | 2012-10-24 | 2013-04-10 | 广东电网公司电力科学研究院 | Large-power three-phase AC standard source |
| CN105897171A (en) * | 2016-04-05 | 2016-08-24 | 西北工业大学 | Wide-band excitation signal generator |
| CN106443097A (en) * | 2016-12-09 | 2017-02-22 | 北方民族大学 | High frequency harmonic current generator |
| CN209248382U (en) * | 2018-12-28 | 2019-08-13 | 北方民族大学 | A kind of modulated current feedback circuit of large-power broadband |
-
2018
- 2018-12-28 CN CN201811626019.1A patent/CN109613954A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101114006A (en) * | 2007-03-21 | 2008-01-30 | 辽宁荣信电力电子股份有限公司 | SVC signal generator |
| CN202217425U (en) * | 2011-09-30 | 2012-05-09 | 北京化工大学 | General modulation-demodulation experimental facility based on software radio |
| CN102904550A (en) * | 2012-09-26 | 2013-01-30 | 北京工业大学 | Multi-channel synchronous waveform generator based on AD9959 |
| CN202870132U (en) * | 2012-10-24 | 2013-04-10 | 广东电网公司电力科学研究院 | Large-power three-phase AC standard source |
| CN105897171A (en) * | 2016-04-05 | 2016-08-24 | 西北工业大学 | Wide-band excitation signal generator |
| CN106443097A (en) * | 2016-12-09 | 2017-02-22 | 北方民族大学 | High frequency harmonic current generator |
| CN209248382U (en) * | 2018-12-28 | 2019-08-13 | 北方民族大学 | A kind of modulated current feedback circuit of large-power broadband |
Non-Patent Citations (1)
| Title |
|---|
| 李虹达;朱东柏;刘骥;: "基于PWM控制连续可调电感的电路设计", 电网技术, no. 1, 15 August 2006 (2006-08-15), pages 268 - 270 * |
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