CN205847094U - Numerical control regulated power supply - Google Patents
Numerical control regulated power supply Download PDFInfo
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- CN205847094U CN205847094U CN201620767882.9U CN201620767882U CN205847094U CN 205847094 U CN205847094 U CN 205847094U CN 201620767882 U CN201620767882 U CN 201620767882U CN 205847094 U CN205847094 U CN 205847094U
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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
This utility model relate to a kind of both can arbitrarily connection in series-parallel and output without the modular power scheme of series diode, improve whole efficiency, improve stability, reduce cost, digital technology networking can be given full play to again, control, scheduling, detection, protection, transmission, networking, remote measurement, remote signalling, remote regulating, the numerical control regulated power supply of the advantages such as remote control, constant current numerical control regulated power supply is followed by load by polylith constant flow module power output end parallel connection, the input of a polylith modular power source road in parallel connects the outfan of AC circuit, one tunnel connects the signal output part of governor circuit, one tunnel connects the synchronizing signal end of governor circuit, governor circuit can be with host computer bidirectional data communication；Or constant voltage numerical control regulated power supply by after polylith modular power source outfan parallel connection with the signal input part of analog-digital converter connect load, the signal output part of analog-digital converter connects the signal input part of governor circuit, and the signal input part of a polylith modular power source road in parallel connects the outfan of AC circuit.
Description
Technical field
This utility model relate to a kind of both can arbitrarily connection in series-parallel and the modular power scheme without series diode, carry
High whole efficiency, improves stability, reduces cost, can give full play to again digital technology networking, control, dispatches, detects, protects
Protect, transmit, networking, remote measurement, remote signalling, remote regulating, the numerical control regulated power supply of the advantage such as remote control, belong to Switching Power Supply and manufacture field.
Background technology
Existing digital power, only increases the Switching Power Supply of digital interface mostly, to realizing the numerical control of power supply, leading to
The functions such as letter, monitoring, do not enter into the core of Switching Power Supply；Also someone passes through microprocessor, DSP etc. and achieves digital PFC,
But its basic framework still could not jump out the circle of analogue technique, the most simply digitized of analogue technique, it is impossible to really sends out
Wave digital technology networking, control, dispatch, detect, protect, transmit, networking, remote measurement, remote signalling, remote regulating, the advantage of remote control.
In high power system, use multiple power module parallel running, see Figure 12, be current power technology
One of developing direction.Modular power parallel running has lot of advantages, and one is that low power power module can group easily
Synthesizing powerful power-supply system, its capacity can be with arbitrary extension；Two is the Redundancy Design realizing power-supply system, improves it reliable
Property；Three is that use occasion is unrestricted, combines as required, convenient, flexible；Four is that operation maintenance is convenient, it might even be possible between not
Change module in the case of cut-off electricity and complete maintenance.Its weak point: the most do not allow module outlet chamber directly to carry out
Parallel connection, due to the difference of parameter between each modular power source, the dutycycle of each module cannot keep consistent, easily causes electric current to pour in down a chimney
And interfere, a diode thus the outfan of each module needs to connect, and the intrinsic pressure drop of diode, especially in low pressure
Large-power occasions, causes serious loss (P=U*I).
Utility model content
Purpose of design: avoid the weak point in background technology, design one both can arbitrarily connection in series-parallel and without connecting
The modular power scheme of diode, improves whole efficiency, improves stability, reduces cost, can give full play to again digital technology
Networking, control, dispatch, detect, protect, transmit, networking, remote measurement, remote signalling, remote regulating, the numerical control regulated power supply of the advantage such as remote control.
Design: in order to realize above-mentioned purpose of design.This utility model is in the design of circuit structure, including master control electricity
Road, working in the pressure-adjustable prime of digital state, power inverter, wherein pressure-adjustable prime accepts major control data and exports according to this
Pwm signal drives switching device regulation output, power inverter to complete by the power change of pressure-adjustable prime to final load
Changing and isolate, when multiple module paralleling runs, institute's power inverter is driven by governor circuit, makes each modular power changer
With frequency push-push operation, the most each module outfan, without series diode, greatly improves the efficiency of power supply, improves stable
Property, reduce cost.
Technical scheme 1: a kind of numerical control regulated power supply, one or more constant flow module power supply in adjustable constant-flow DCPS digitally controlled power source
Outfan parallel connection is followed by load, and the input of modular power source is in parallel, and a road connects the outfan of AC circuit, a road connects governor circuit
Signal output part, a road connect the synchronizing signal end of governor circuit；Or one or more modular power source in adjustable constant voltage DCPS digitally controlled power source
Outfan parallel connection after with the signal input part of analog-digital converter connect load, the signal output part of analog-digital converter connects master control
The signal input part of circuit, the input of modular power source is in parallel, and a road connects the signal output part of AC sample circuit, a road connects master control
The signal output part of circuit, a road connect the synchronizing signal end of governor circuit.
Constant flow module power supply is turned by on-off circuit, microprocessor, power inverter, output circuit, drive circuit and modulus
Parallel operation is constituted；The outfan of on-off circuit input termination AC circuit, the input of the output termination power inverter of on-off circuit,
The input of the output termination output circuit of power inverter, the outfan of output circuit and the signal input part of analog-digital converter
And connecing load, the signal output part of analog-digital converter connects microprocessor signals input, and microprocessor signals output termination is opened
Closing the signal input part of circuit, drive circuit signal input part connects the synchronous signal output end of governor circuit, drive circuit defeated
Go out the signal input part of termination power changer；Or constant voltage modular power source is by on-off circuit, microprocessor, power inverter, defeated
Go out circuit, drive circuit and analog-digital converter to constitute；The outfan of on-off circuit input termination AC circuit, the output of on-off circuit
The input of termination power changer, the input of the output termination output circuit of power inverter, the outfan of output circuit
With the signal input part of analog-digital converter connect load, the signal output part of analog-digital converter connects microprocessor signals input
End, the signal input part of microprocessor signals output termination on-off circuit, drive circuit signal input part connects the same of governor circuit
Step signal output part, the signal input part of the output termination power inverter of drive circuit.
On-off circuit and microprocessor constitute adjustable digital prime and adjustable digital prime makes input by internal PFC algorithm
The change of current following input voltage, it is achieved PFC controls.The switching signal of power inverter is provided by single-chip microcomputer.Analog digital conversion
Device is the analog-digital converter in single-chip microcomputer or other digit chip.Power inverter is to be controlled by single-chip microcomputer or DSP digit chip
Soft switching power converters.Single-chip microcomputer 1 or DSP1 and single-chip microcomputer 2 or DSP2 can be same single-chip microcomputer or DSP.Master control electricity
Can combine together with the single-chip microcomputer of pressure-adjustable numeral prime or DSP when circuit is applied in road, control data and passed by internal processes
Pass.Power inverter is provided with sync cap, can receive the synchronizing signal that master control sends, when multi-power module is used in parallel, and can
With with frequency push-push operation.
This utility model compared with background technology, one be can arbitrarily connection in series-parallel and between module with module without connecting two
Pole is managed, and not only improves power supply conversion efficiency and stability, and reduces manufacturing cost；Two is to give full play to digital technology network
Change, have control, dispatch, detect, protect, transmit, networking, remote measurement, remote signalling, remote regulating, the advantage such as remote control.
Accompanying drawing explanation
Fig. 1 is the structural representation that constant current in parallel uses digital voltage regulation power supply.
Fig. 2 is the modular power source structural representation in Fig. 1.
Fig. 3 is the structural representation that constant voltage in parallel uses digital voltage regulation power supply.
Fig. 4 is band PFC function adjustable digital prime structural representation.
Fig. 5 is the BOOST circuit diagram of band PFC function.
Fig. 6 is the schematic diagram of pressure-adjustable numeral other implementations of prime.
Fig. 7 is the structural representation that constant pressure and flow uses digital voltage regulation power supply.
Fig. 8 is the modular power source schematic diagram that can receive synchronizing signal.
Fig. 9 is the schematic diagram of half-bridge circuit on-off circuit.
Figure 10 is the structural representation of modular power source.
Figure 11 is that governor circuit incorporates pressure-adjustable numeral prime schematic diagram when single channel is applied.
Figure 12 is the schematic diagram of background technology.
Detailed description of the invention
Embodiment 1: when constant current uses: with reference to Fig. 1.A kind of digital voltage regulation power supply includes: modular power source 1, modular power source
2... modular power source n (n is more than or equal to 1) composition, master control is connected with each module respectively, and each wired in parallel is also connected with load.Respectively
Modular structure sees Fig. 2.
Described pressure-adjustable numeral prime includes microprocessor and accepts the on-off circuit that microprocessor controls；Microprocessor one
End is connected with master control, and one end is connected with on-off circuit, and analog-digital converter input connects output circuit output, and outfan connects micro-
Processor, drive circuit is connected with power inverter.
Described governor circuit, according to setting or system set-point, transmits control data to the pressure-adjustable numeral of each module
Prime, set-point that described pressure-adjustable numeral prime sends according to governor circuit, the value of feedback of analog-digital converter, calculate through inside
Method forms pwm signal, drives on-off circuit regulation output voltage, delivers to load through power inverter, output circuit, complete output
Set up.
Described power inverter is industry known circuits, but is not involved in power adjustments, the most each module dutycycle and frequency
Rate can be consistent, accepts the synchronizing signal that master control sends simultaneously, makes each module with frequency push-push operation.
Described output circuit is industry known circuits, and the output of power inverter is adjusted to load required voltage.
Described analog-digital converter gathers the electric current of output circuit output, voltage, feeds back to pressure-adjustable number with data mode
Word prime.Described analog-digital converter can integrated in the microprocessor.
Described governor circuit also has data communication interface, can be with upper machine communication.User can be by master control
Man Machine Interface or PC control power supply.
Master control in real time with each module communication, when master control accepts instruction need to be to load conveying electric current I, master control is by electric current average mark
The modular power source of its subordinate of dispensing, each modular power source receives the electric current I/n that master controller is distributed.
The output electric current of each module detection oneself, when the electric current detected is more than I/n, pressure-adjustable numeral prime is i.e. turned down
Output voltage, until equal with distributed electric current.When the electric current detected is less than I/n, pressure-adjustable numeral prime is then heightened defeated
Go out voltage, until equal with distributed electric current.When the output electric current of each module is equal to I/n, total output electric current is I, complete
Become constant current output.
Embodiment 2: when constant voltage uses: referring to the drawings 3.If Uo is rated output voltage, Io is output-current rating.Master control
The voltage U at detection load two ends, and real-time and each module communication, be added output electric current I1, I2...In of each module, obtain
Total output electric current I, calculates the equivalent resistance R of load according to the voltage U and the electric current I counted of detection.By required voltage
Uo/R draws and loads required total current Io in the case of constant voltage.Electric current is averagely allocated to the modular power source of its subordinate by master control,
Each modular power source receives the electric current Io/n that master control is distributed.
The output electric current of each module detection oneself, when the electric current detected is more than Io/n, microprocessor will according to feedback
The output voltage of pressure-adjustable numeral prime reduces, until the electric current detected is equal with distributed electric current.When the electric current detected
During less than Io/n, the output voltage of pressure-adjustable numeral prime is raised by microprocessor according to feedback, until the electric current detected with
Distributed electric current is equal.When the output electric current of each module is equal to Io/n, total output electric current is Io, completes constant voltage output.
Embodiment 3: with reference to Fig. 4.Described pressure-adjustable numeral prime can also add current feedback and PFC algorithm, and making can
Pressure regulating digital prime has power factor emendation function concurrently while regulation output voltage.
The present embodiment breaker in middle circuit is preferred BOOST circuit, sees Fig. 5.
The purpose of PFC is intended to make the waveform of electric current I follow input voltage U, simultaneously PFC output voltage U_
pfc。
If it is equal with input voltage phase to meet input current, then load can be equivalent to resistance R.Therefore:
U=I*R
For BOOST circuit, its input voltage U with the relation of output voltage Uo and dutycycle D is:
U=I*R is substituted into:
U_pfc* (1-D)=I*R
Therefore:
Owing to power transducer gain G fixes, so output voltage Uo=U_pfc*G.
Wherein: D dutycycle, I is BOOST circuital current, and R is equivalent resistance, and G is power inverter fixed gain, Uo merit
Rate changer output voltage.
Pressure-adjustable numeral prime can calculate dutycycle according to the BOOST circuital current of sampling and the output voltage of feedback,
Pressure-adjustable numeral prime is made to have power factor emendation function concurrently while regulation output voltage.
Embodiment 4: with reference to Fig. 6.Described pressure-adjustable numeral prime can also control known simulation by microprocessor
Chip realizes.
Set-point that pressure regulating digital prime sends according to governor circuit, the value of feedback of analog-digital converter, through internal algorithm shape
Becoming digital controlled signal, and be converted to analog control signal by digital to analog converter, known analog chip controls letter according to simulation
Number regulation PWM, drive on-off circuit regulation output voltage, through power inverter deliver to load, complete output set up.Described number
Weighted-voltage D/A converter can integrated in the microprocessor.
Embodiment 5: with reference to Fig. 7.The constant current source of a kind of digital voltage regulation power supply includes: modular power source 1, modular power source 2...
Modular power source n (n is more than or equal to 1) composition, master control is connected with each module respectively, and each module is connected with load respectively.
Master control in real time with each module communication, when master control accept instruction need to load 1, load 2... load n conveying electric current I1,
I2...In, each required electric current is distributed to the modular power source of each correspondence of its subordinate by master control.
The output electric current of each module detection oneself, when the electric current detected is more than set-point, microprocessor is according to feedback
Reducing PWM duty cycle, the output voltage of pressure-adjustable numeral prime reduces, until detection electric current is equal to set-point.When detect
When electric current is less than set-point, microprocessor increases PWM duty cycle according to feedback, and the output voltage of pressure-adjustable numeral prime raises,
Until detection electric current is equal to set-point.When the output electric current of each module is equal to set-point, complete constant current output.
Embodiment 6: with reference to Fig. 7.The constant voltage source of a kind of digital voltage regulation power supply includes: modular power source 1, modular power source 2...
Modular power source n (n is more than or equal to 1) composition, master control is connected with each module respectively, and each module is connected with load respectively.
Master controller in real time with each module communication, when master controller accepts that instruction need to 2... load n be defeated to load 1, load
Power transmission pressure U1, U2...U3.Each required voltage is distributed to the modular power source of each correspondence of its subordinate by master controller.
The output voltage of each module detection oneself, when the voltage detected is more than set-point, microprocessor is according to feedback
Reducing PWM duty cycle, the output voltage of pressure-adjustable numeral prime reduces, until detection voltage is equal to set-point.When detect
When voltage is less than set-point, microprocessor increases PWM duty cycle according to feedback, and the output voltage of pressure-adjustable numeral prime raises,
Until detection voltage is equal to set-point.When the output voltage of each module is equal to set-point, complete constant voltage output.
Embodiment 7: see Fig. 8.Described power inverter can utilize the exploitation of microprocessor simply, and multichannel input is defeated
Go out, logical operations can be carried out, can the feature of sequencing contro, control power inverter and make it work in Sofe Switch state.
In the present embodiment, power inverter is preferred half-bridge circuit, sees Fig. 9.
Assuming that Q2 conducting, mid-point voltage V_mid is equal to DC bus-bar voltage V_dc.
State one: according to the time set, control circuit makes Q2 turn off, and internal timer starts timing simultaneously, due to humorous
Shaking the existence of electric capacity C2, mid-point voltage V_mid is equal to DC bus-bar voltage V_dc, Q2 zero voltage turn-off.Resonant capacitance C2 passes through
Transformator T1 discharges, and circuit enters resonant condition.
State two: owing to the leakage inductance energy of T1 not yet drains, therefore T1 electric current is the most from left to right, when resonant capacitance C2 discharges
Complete, diode D3 afterflow turns on, and control circuit detects mid-point voltage zero passage, and control circuit makes Q3 turn on, and Q3 no-voltage is opened
Logical.Timer stops the turn-off time t1 of timing recording Q2 simultaneously.
State three: according to the time set, control circuit makes Q3 turn off, due to the existence of resonant capacitance C2, mid-point voltage
V_mid is equal to 0, Q3 zero voltage turn-off.
State four: according to circuit symmetry principle, the turn-off time t1 that i.e. may utilize switching tube Q2 determines switching tube Q3's
Turn-off time, thus control switching tube Q2 conducting, now Q2 is no-voltage conducting.Return to state one re-circulation.
Owing to can measure or calculate the change (because of load change) of switching tube switching speed during controlling, therefore may be used
To realize servo antrol (drive with switching tube switching speed and change with load change).
The microprocessor 1 of power inverter microprocessor 2 and pressure-adjustable numeral prime can be by a microprocessor, ginseng
See Figure 10.
Embodiment 8: with reference to Figure 11.Described governor circuit can be with the monolithic of pressure-adjustable numeral prime when single channel is applied
Machine (or DSP) combines together, controls data and is transmitted by internal processes.User controls output by host computer or Man Machine Interface
Voltage or output electric current.
It is to be understood that: the detailed word although mentality of designing of the present utility model is contrasted by above-described embodiment
Describe, but these words describe, simply the simple text of this utility model mentality of designing is described rather than new to this practicality
The restriction of type mentality of designing, any combination without departing from this utility model mentality of designing, increases or revises, and each falls within this practicality new
In the protection domain of type.
Claims (8)
1. a numerical control regulated power supply, is characterized in that: in adjustable constant-flow DCPS digitally controlled power source, one or more constant flow module power supply is defeated
Going out to hold parallel connection to be followed by load, the input of a modular power source road in parallel connects the outfan of AC circuit, a road connects the letter of governor circuit
Number outfan, a road connect the synchronizing signal end of governor circuit；Or one or more modular power source in adjustable constant voltage DCPS digitally controlled power source
With the signal input part of analog-digital converter connect load after outfan parallel connection, the signal output part of analog-digital converter connects master control electricity
The signal input part on road, the input of a modular power source road in parallel connects the signal output part of AC sample circuit, a road connects master control electricity
The signal output part on road, a road connect the synchronizing signal end of governor circuit.
Numerical control regulated power supply the most according to claim 1, is characterized in that: constant flow module power supply is by on-off circuit, micro-process
Device, power inverter, drive circuit, output circuit and analog-digital converter are constituted；The output of on-off circuit input termination AC circuit
End, the input of the output termination power inverter of on-off circuit, the input of the output termination output circuit of power inverter,
The outfan of output circuit and the signal input part of analog-digital converter also connect load, and the signal output part of analog-digital converter connects micro-
Processor signal input, the signal input part of microprocessor signals output termination on-off circuit, drive circuit signal input part
Connect the synchronous signal output end of governor circuit, the signal input part of the output termination power inverter of drive circuit；Or constant voltage mould
Block power supply is made up of on-off circuit, microprocessor, power inverter, drive circuit, output circuit and analog-digital converter；Switch electricity
The outfan of road input termination AC circuit, the input of the output termination power inverter of on-off circuit, power inverter defeated
Going out to terminate the input of output circuit, the outfan of output circuit and the signal input part of analog-digital converter also connect load, mould
The signal output part of number converter connects microprocessor signals input, and the signal of microprocessor signals output termination on-off circuit is defeated
Entering end, drive circuit signal input part connects the synchronous signal output end of governor circuit, the output termination power conversion of drive circuit
The signal input part of device.
Numerical control regulated power supply the most according to claim 2, is characterized in that: on-off circuit and microprocessor constitute adjustable digital
Prime and adjustable digital prime make input current follow the change of input voltage by internal PFC algorithm, it is achieved PFC controls.
Numerical control regulated power supply the most according to claim 3, is characterized in that: pressure-adjustable numeral prime can also be by micro-process
Device controls known analog chip and realizes, set-point that i.e. pressure regulating digital prime sends according to governor circuit, analog-digital converter
Value of feedback, forms digital controlled signal through internal algorithm, and is converted to analog control signal, known simulation by digital to analog converter
Chip regulates PWM according to analog control signal, drives on-off circuit regulation output voltage, delivers to load through power inverter, complete
Become output set up, described digital to analog converter can integrated in the microprocessor；Or described pressure-adjustable numeral prime is all right
Add current feedback and PFC algorithm, make pressure-adjustable numeral prime have PFC merit concurrently while regulation output voltage
Energy.
Numerical control regulated power supply the most according to claim 2, is characterized in that: the switching signal of power inverter is carried by single-chip microcomputer
Supply；Analog-digital converter is the analog-digital converter in single-chip microcomputer or other digit chip.
Numerical control regulated power supply the most according to claim 2, is characterized in that: power inverter is by single-chip microcomputer or DSP numeral
The Soft switching power converters of chip controls.
Numerical control regulated power supply the most according to claim 6, is characterized in that: single-chip microcomputer 1 or DSP1 and single-chip microcomputer 2 or DSP2 can
To be same single-chip microcomputer or DSP.
Numerical control regulated power supply the most according to claim 2, is characterized in that: governor circuit can be with adjustable when circuit is applied
Single-chip microcomputer or the DSP of pressure numeral prime combine together, control data and are transmitted by internal processes.
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| CN201620767882.9U CN205847094U (en) | 2016-07-18 | 2016-07-18 | Numerical control regulated power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100328A (en) * | 2016-07-18 | 2016-11-09 | 杭州重芯力科技有限公司 | Numerical control regulated power supply and pressure regulation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106100328A (en) * | 2016-07-18 | 2016-11-09 | 杭州重芯力科技有限公司 | Numerical control regulated power supply and pressure regulation method |
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