CN109936286A - Constant flow module series connection output voltage-equalizing control circuit and parameter determination method - Google Patents

Constant flow module series connection output voltage-equalizing control circuit and parameter determination method Download PDF

Info

Publication number
CN109936286A
CN109936286A CN201910218348.0A CN201910218348A CN109936286A CN 109936286 A CN109936286 A CN 109936286A CN 201910218348 A CN201910218348 A CN 201910218348A CN 109936286 A CN109936286 A CN 109936286A
Authority
CN
China
Prior art keywords
voltage
constant
current
information
control circuit
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.)
Pending
Application number
CN201910218348.0A
Other languages
Chinese (zh)
Inventor
周立功
彭浩
魏小忠
黎宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Zhiyuan Electronics Co Ltd
Original Assignee
Guangzhou Zhiyuan Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangzhou Zhiyuan Electronics Co Ltd filed Critical Guangzhou Zhiyuan Electronics Co Ltd
Priority to CN201910218348.0A priority Critical patent/CN109936286A/en
Publication of CN109936286A publication Critical patent/CN109936286A/en
Pending legal-status Critical Current

Links

Abstract

It connects the present invention relates to constant flow module and exports voltage-equalizing control circuit and parameter determination method, constant flow module series connection output voltage-equalizing control circuit includes voltage-equalizing control circuit corresponding with constant flow module and constant-current control circuit.Voltage-equalizing control circuit is used to obtain the output voltage information of reference voltage information and constant flow module, and controls reference signal to constant-current control circuit output constant current according to output voltage information and reference voltage information.Constant-current control circuit is used to obtain the output current information of current constant control reference signal and constant flow module, and control signal is issued to constant flow module according to current constant control reference signal and output current information, control signal is for controlling constant flow module output constant current, and the voltage that output matches with reference voltage information.

Description

Constant flow module series connection output voltage-equalizing control circuit and parameter determination method
Technical field
The present invention relates to field of circuit control more particularly to constant flow module series connection output voltage-equalizing control circuit and parameter to determine Method.
Background technique
With flourishing for electronic circuit industry, test power supply plays more and more important work in research and development and production With.And in order to meet the needs of different outputs, test power supply will not only can be realized High voltage output, but also can be realized constant current Output.
During R&D and production, to obtain high voltage output, usually by multiple constant currents test power supply series connection output.And Since the parameter between multiple constant currents test power module has differences, or due to each constant current test power module and outside The difference of line is easy to cause when by multiple constant currents test power module series connection output, each constant current test power module it Between output voltage it is unequal.If things go on like this, when the voltage difference between each constant current test power module is more than certain limit, It is easy to damage constant current test power module.
Summary of the invention
Based on this, it is necessary to when for the series connection output of above-mentioned constant flow module the technical issues of voltage un-balance, propose a kind of constant current The voltage-equalizing control circuit of block coupled in series output.
The embodiment of the present invention provides a kind of constant flow module series connection output voltage-equalizing control circuit, including opposite with constant flow module The voltage-equalizing control circuit and constant-current control circuit answered；
Voltage-equalizing control circuit is used to obtain the output voltage information of reference voltage information and constant flow module, and according to output electricity Information and reference voltage information is pressed to control reference signal to constant-current control circuit output constant current；
Constant-current control circuit is used to obtain the output current information of current constant control reference signal and constant flow module, and according to perseverance Flow control reference signal and output current information are issued to constant flow module controls signal, and control signal is defeated for controlling constant flow module Constant current out, and the voltage that output matches with reference voltage information.
In one of the embodiments, voltage-equalizing control circuit include corresponding voltage acquisition unit, pressure acquisition unit with And press compensating unit；
Voltage acquisition unit is used to obtain the output voltage information of corresponding constant flow module, and output voltage information is exported Acquisition unit is pressed to corresponding；Being also used to should to the corresponding voltage acquisition unit output of other constant flow modules by equalizing busbar Output voltage information；
Pressure acquisition unit is used to obtain the output voltage information of corresponding voltage acquisition unit and the electricity of equalizing busbar Information is pressed, reference voltage information is determined according to the information of voltage of output voltage information and bus, and reference voltage information is exported To pressure compensating unit；
Pressure compensating unit is for obtaining reference current information, output voltage information and reference voltage information, according to defeated Information of voltage and reference voltage information compensate reference current information out, obtain current constant control reference signal, and by constant current Control reference signal is output to constant-current control circuit.
Voltage acquisition unit includes that differential amplifier circuit and first voltage follow circuit in one of the embodiments,；
Differential amplifier circuit is used to obtain the output voltage information of corresponding constant flow module, and carries out to output voltage information Calculus of differences obtains first voltage information, and first voltage information is exported to first voltage and follows circuit；
First voltage follows circuit to export for obtaining first voltage information, and by first voltage information to pressure acquisition list Member and equalizing busbar.
Pressure acquisition unit includes that second voltage follows circuit in one of the embodiments,；
Second voltage follows circuit for obtaining the information of voltage of first voltage information and equalizing busbar, according to the first electricity The information of voltage of pressure information and equalizing busbar determines that the corresponding power information of maximum value is benchmark information of voltage, and by reference voltage Information is exported to pressure compensating unit.
Pressure compensating unit includes adder operation circuit and operational transconductance device in one of the embodiments,；
Operational transconductance device is for obtaining first voltage information and reference voltage information, to first voltage information and reference voltage Information carries out operational transconductance and obtains current compensation information, and current compensation information is exported to adder operation circuit；
Adder operation circuit mends reference current information and electric current for obtaining reference current information and current compensation information It repays information progress add operation and obtains current constant control reference signal, and current constant control reference signal is exported to current constant control electricity Road.
Differential amplifier circuit includes the first operational amplifier in one of the embodiments, and first voltage follows circuit packet Include second operational amplifier；
First input of the first operational amplifier is connected for holding by the first voltage input terminal of resistance R1 and constant flow module It connects, and is connect by resistance R2 and first capacitor in parallel with the output end of the first operational amplifier；First operational amplifier Second input terminal is used to connect by the second output terminal of resistance R3 and constant flow module, and passes through the electricity of resistance R4 in parallel and second Hold ground connection；The output end of first operational amplifier is connect with second operational amplifier；
The first input end of second operational amplifier is connect with its output end, the second input terminal of second operational amplifier with The output end of first operational amplifier connects, and the output end and second voltage of second operational amplifier follow the input terminal of circuit to connect It connects, and for being connect with equalizing busbar.
It includes third operational amplifier that second voltage, which follows circuit, in one of the embodiments,；Third operational amplifier First input end connect with its output end, the second input terminal of third operational amplifier for respectively with second operational amplifier Output end connected with equalizing busbar.
The output end of the first input end of operational transconductance device and third operational amplifier connects in one of the embodiments, Connect, the second input terminal of operational transconductance device is connect with the output end of the first operational amplifier, the output end of operational transconductance device with plus The connection of method computing circuit, and by third capacity earth, and pass through concatenated resistance R5 and the 4th capacity earth.
Adder operation circuit includes four-operational amplifier in one of the embodiments, and the of four-operational amplifier One input terminal is connect for obtaining reference current information with the output end of operational transconductance device；The second of four-operational amplifier Input terminal is connect by resistance R6 with the output end of four-operational amplifier, and is grounded by resistance R7；Four-operational amplifier Output end for being connect with constant-current control circuit.
The embodiment of the present invention also provides a kind of constant current output power-supply system, including concatenated multiple constant flow modules and with perseverance Multiple constant flow module series connection output voltage-equalizing control circuits, constant flow module series connection export voltage-equalizing control circuit to flow module correspondingly The constant flow module series connection output voltage-equalizing control circuit provided for the various embodiments described above.
The embodiment of the present invention a kind of determination method of voltage-equalizing control circuit component parameter is also provided comprising steps of
Obtain pole value, the zero point value of constant-current control circuit and the low frequency of constant-current control circuit of constant-current control circuit Locate the maximum output voltage of gain, constant-current control circuit, and the transmission function of constant-current control circuit is simulated, is simulated Curve；
Simulation curve is compensated, determine compensation zero point value, compensation pole value and constant-current control circuit passes through frequency Rate；
Resistance R1, resistance R2 are determined according to the maximum output voltage of the cross-over frequency of constant-current control circuit and constant flow module Resistance value and first capacitor capacitance, and according to compensation zero point value, compensation pole value determine third capacitor, the 4th electricity The capacitance of appearance and the resistance value of resistance R5.
Pole value, the zero point value of constant-current control circuit of constant-current control circuit are obtained in one of the embodiments, and The process of gain at the low frequency of constant-current control circuit, comprising steps of
Obtain Bode diagram curve of the constant-current control circuit on phase analyser；
According to the pole value of Bode diagram curve acquisition constant-current control circuit, the zero point value of constant-current control circuit and constant current Gain at the low frequency of control circuit.
The electricity of third capacitor, the 4th capacitor is determined according to compensation zero point value, compensation pole value in one of the embodiments, The process of capacitance and the resistance value of resistance R5, is obtained by following formula:
Wherein, fz is zero point value, and fp is pole value；C3For the capacitance of third capacitor, C4For the capacitance of the 4th capacitor, R5For the capacitance of the 5th capacitor.
In one of the embodiments, according to the maximum output of the cross-over frequency of constant-current control circuit and constant flow module electricity The process for determining the capacitance of resistance R1, the resistance value of resistance R2 and first capacitor is pressed, is obtained by following formula:
Wherein fcrossFor cross-over frequency, C1For the capacitance of first capacitor, VmaxFor maximum output voltage, V is constant flow module Maximum voltage, R1For the capacitance of resistance R1, R2For the resistance value of resistance R2.
The embodiment of the present invention also provides a kind of computing device of voltage-equalizing control circuit component parameter, comprising:
Analog module, for obtaining the pole value, the zero point value of constant-current control circuit and constant current control of constant-current control circuit Gain at the low frequency of circuit processed, constant-current control circuit maximum output voltage, and the transmission function of constant-current control circuit is carried out Simulation, obtains simulation curve；
Compensating module determines compensation zero point value, compensation pole value and current constant control for compensating to simulation curve The cross-over frequency of circuit；
Computing module determines resistance according to the maximum output voltage of the cross-over frequency of constant-current control circuit and constant flow module The capacitance of R1, the resistance value of resistance R2 and first capacitor, and third electricity is determined according to compensation zero point value, compensation pole value The resistance value of appearance, the capacitance of the 4th capacitor and resistance R5.
The embodiment of the present invention also provides a kind of storage medium, is stored thereon with computer program, and computer program is processed The step in any of the above-described embodiment of the method is realized when device executes.
Above-mentioned constant flow module series connection output voltage-equalizing control circuit is reference voltage to constant current from acquisition reference voltage information is crossed Module carries out output control, so that each constant flow module realizes Pressure and Control.Design is simple, and works as any one constant current When something goes wrong, the maximum output voltage that can automatically select remaining normal module carries out Pressure and Control to module.
Detailed description of the invention
Fig. 1 is the module frame chart of the constant flow module series connection output voltage-equalizing control circuit of one embodiment of the invention；
Fig. 2 is the module frame chart of the constant flow module series connection output voltage-equalizing control circuit of another embodiment of the present invention；
Fig. 3 is the circuit of three concatenated constant flow module series connection output voltage-equalizing control circuits of one embodiment of the invention Figure；
Fig. 4 is the circuit diagram of the constant flow module series connection output voltage-equalizing control circuit of one embodiment of the invention；
Fig. 5 is the step block diagram of one embodiment of the invention constant flow module series connection output pressure equalizing control method；
Fig. 6 is the step block diagram that one embodiment of the invention obtains reference voltage information；
Fig. 7 obtains current constant control with reference to letter according to reference voltage information and output voltage information for one embodiment of the invention Number step block diagram；
Fig. 8 obtains the step frame of current constant control reference signal according to first compensated information for one embodiment of the invention Figure；
Fig. 9 is that one embodiment of the invention is issued according to output current information and current constant control reference signal to constant flow module Control the step block diagram of signal；
Figure 10 is the module frame chart of one embodiment of the invention constant flow module series connection output voltage-stabilizing controller；
Figure 11 is the step block diagram that one embodiment of the invention voltage-equalizing control circuit component parameter determines method；
Figure 12 is that one embodiment of the invention obtains the pole value of constant flow module transmission function and the step block diagram of zero point value.
Specific embodiment
Purpose, technical solution and technical effect for a better understanding of the present invention, below in conjunction with drawings and examples Further explaining illustration is carried out to the present invention.It states simultaneously, embodiments described below for explaining only the invention, and does not have to It is of the invention in limiting.
As shown in Figure 1, the embodiment of the present invention provides a kind of constant flow module output series average-voltage control circuit, including voltage-controlled Circuit 1 and constant-current control circuit 2 processed, wherein each constant flow module 3 corresponds to a voltage-equalizing control circuit 1 and a constant current control Circuit 2 processed controls.Voltage-equalizing control circuit 1 is connect with constant-current control circuit 2, and voltage-equalizing control circuit 1 obtains the output of constant flow module Information of voltage and reference voltage information export perseverance to constant-current control circuit 2 according to output voltage information and reference voltage information Flow control reference signal.Constant-current control circuit 2 obtains the output electric current of current constant control reference signal and constant flow module, according to constant current Control reference signal and output electric current to constant flow module send control signal, with control constant flow module export constant electric current with And output voltage corresponding with reference voltage.
Wherein, constant flow module 3 can be DC/DC constant flow module, be also possible to AC/DC constant flow module.Each constant flow module 3 It is correspondingly arranged voltage-equalizing control circuit 1, voltage-equalizing control circuit 1 obtains the process of the output voltage information of constant flow module, can be with perseverance The output end connection of flow module 3 directly acquires output voltage, can also be by connecting indirect gain and perseverance with intermediate operational amplifier circuit The corresponding output voltage information of flow module 3.After voltage-equalizing control circuit 1 handles output voltage information, current constant control is generated Reference signal exports current constant control reference signal to constant-current control circuit 2.Voltage-equalizing control circuit 1 is to output voltage information Processing can be coefficient according to a certain percentage and carry out increasing processing or attenuation processing to output voltage information, be also possible to pair Output voltage information carries out difference or integral operation processing, with the corresponding letter that generates subsequent processing steps and can directly handle Breath.
Constant-current control circuit 2 obtains the process of the output electric current of constant flow module 3, can be defeated with the electric current of constant flow module 3 Outlet connection directly acquires, can also by and the connection of intermediate operational amplifier circuit obtain output electric current corresponding with constant flow module indirectly Information.Constant-current control circuit 2 handles output current information and current constant control reference signal to obtain control signal, here Output current information and current constant control reference signal are handled, can be and be modulated operation, is also possible to be mended Operation is repaid, as long as can obtain controlling signal accordingly, constant flow module 3 is controlled.Control signal is for controlling perseverance Flow module exports constant electric current, and the voltage that the control output of constant flow module 3 matches with reference voltage, and realization is pressed defeated Out.Constant-current control signal can be analog control signal, be also possible to digital controlled signal.
Constant flow module of embodiment of the present invention series connection output voltage-equalizing control circuit, by acquiring reference voltage information, as control System reference controls 2 output constant current of constant-current control circuit control reference signal, so that the realization of each constant flow module 3 is pressed Control.Design is simple, and works as any one module when something goes wrong, can automatically select the maximum of remaining normal module Output voltage carries out Pressure and Control.
In one of the embodiments, as shown in Fig. 2, voltage-equalizing control circuit 1 includes voltage acquisition unit 11, pressure acquisition Unit 12 and pressure compensating unit 13.
Wherein, pressure acquisition unit 12 is connect with voltage acquisition unit 11 and pressure compensating unit 13 respectively.Voltage acquisition Unit 11 is used to obtain the output voltage information of corresponding constant flow module 3, and output voltage information is exported to pressure and is acquired Unit 12.Voltage acquisition unit 11 is also used to issue by equalizing busbar 100 to the voltage acquisition unit 11 of other constant flow modules Output voltage information.Voltage acquisition unit 11 is output to pressure acquisition unit 12 after being handled output voltage information, It can also be directly by output voltage message transport to pressure acquisition unit 12.Pressure acquisition unit 12 obtains voltage acquisition unit 11 The output voltage information sent, and obtain the information of voltage of equalizing busbar 100.Obtain equalizing busbar 100 information of voltage be Obtain the information of voltage that the voltage acquisition unit 11 of other constant flow modules transmitted from equalizing busbar 100 exports.Pressure acquisition is single Member 12 therefrom determines that an information of voltage is output to pressure compensating unit as reference voltage information after obtaining these information 13.Reference voltage information can be the information of voltage from pressure acquisition unit 12 corresponding output voltage information and equalizing busbar 100 It is middle select corresponding voltage value be minimum value information of voltage as the reference voltage information, be also possible to select corresponding voltage Value is the information of voltage of maximum value as the reference voltage information, can be designed according to actual needs with electric circuit characteristic.? Pressure compensating unit 13 respectively with acquisition unit 12 and voltage acquisition unit 11 is pressed to connect, for obtaining reference voltage information, defeated Information of voltage and obtain reference current information out, according to reference voltage information and output voltage information to reference current information into Row compensation, obtains current constant control reference signal, which is output to constant-current control circuit 2.
In wherein some embodiments, voltage acquisition unit 11 can be a digit chip, be also possible to a voltage Circuit is followed, can also be the combination of multiple analog circuits, such as a differential amplifier circuit and voltage follower circuit Multistage-combination circuit.
As shown in Figure 3 and shown in Fig. 4, the present embodiment includes differential amplifier circuit and first voltage with voltage acquisition unit 11 The multistage-combination circuit of circuit is followed to describe in detail.Differential amplifier circuit obtains the output electricity of corresponding constant flow module Information is pressed, and voltage ratio calculation process is carried out to output voltage information, decaying and inhibition environmental disturbances appropriate is carried out, obtains To first voltage information, and first voltage information is exported to first voltage and follows circuit.First voltage follows circuit by first Information of voltage is exported respectively to pressure acquisition unit 12 and equalizing busbar 100.
Optionally, differential amplifier circuit includes a first operational amplifier U1, and it includes one that first voltage, which follows circuit, Second operational amplifier U2.The first input end of first operational amplifier U1 is used for through resistance R1 and corresponding constant flow module The connection of first voltage output end, and connected by the output end of resistance R2 and first capacitor and first operational amplifier U1 in parallel It connects.The second input terminal of first operational amplifier U1 is used to connect by resistance R3 with the second output terminal of corresponding constant flow module It connects, and passes through resistance R4 and the second capacity earth in parallel.The output end and second operational amplifier of first operational amplifier U1 U2 connection.First operational amplifier U1 is used to carry out input current after calculus of differences processing output first voltage information to the Two operational amplifier U2.
The first input end of second operational amplifier U2 is connected with the output end of second operational amplifier U2, the second operation The second input terminal of amplifier U2 is connect with the output end of the first operational amplifier U1.Optionally, the first operational amplifier U1 Output end is by the first ground resistance R00 ground connection, and the remote ground terminal of the first ground resistance R00 is with second operational amplifier U2's Second input terminal connection, to carry out voltage input to second operational amplifier U2.The output end of second operational amplifier U2 and Acquisition Circuit connection is pressed, is also connect with equalizing busbar 100, for exporting first voltage information to pressure acquisition unit 12, and is led to It crosses equalizing busbar 100 and exports the first voltage information of this constant flow module to the voltage-equalizing control circuit 1 of other constant flow modules to drive Equalizing busbar 100.
In some embodiments, pressure acquisition unit 12 can be comparison circuit or selection circuit.Optionally, this implementation Example includes that a second voltage follows circuit to be described in detail to press acquisition unit 12.Second voltage follows circuit to obtain the The first voltage information of one voltage follower circuit output, and the information of voltage of equalizing busbar 100 is obtained, second voltage follows electricity Corresponding voltage in the information of voltage of first voltage information and equalizing busbar 100 is worth a maximum information of voltage as benchmark by road Information of voltage is output to pressure compensation circuit.Optionally, second voltage follows circuit to can be third operational amplifier U3.Third The first input end of operational amplifier U3 is connect with the output end of its own, the second input terminal of third operational amplifier U3 and The output end of two operational amplifier U2 connects, and the second input terminal of third operational amplifier U3 is also used to connect with equalizing busbar 100 It connects and is grounded by the second ground resistance R01.
In some embodiments, pressure compensating unit 13 can be operational transconductance device gm1 and adder operation circuit.Mutual conductance fortune Device gm1 is calculated for obtaining first voltage information and reference voltage information, first voltage information and reference voltage information are carried out Input voltage can be converted into electric current output by the first compensation operation, obtain the first compensated information, and the first compensated information is exported To adder operation circuit.Adder operation circuit obtains the first compensated information and reference current information, to the first compensated information and Reference current information is overlapped operation, obtains current constant control reference signal, and current constant control reference signal is exported to constant current Control circuit 2.Superposition herein can be and carry out to the current value that the first compensated information and reference current information respectively indicate It is simple to be added, be also possible to it is one of be added again after reverse phase processing, or both all carry out reverse phase processing after be added, It can be configured according to the design needs, those skilled in the art can be realized by the setting to adder operation circuit, such as Adder calculator is set by adder operation circuit, details are not described herein.Optionally, the first input end of operational transconductance device gm1 It is connect with the output end of third operational amplifier U3, the second input terminal of operational transconductance device gm1 and the first operational amplifier U1's Output end connection, the output end of operational transconductance device gm1 are connect with adder operation circuit.Optionally, the output of operational transconductance device gm1 End is also by third capacity earth, and passes through concatenated resistance R5 and the 4th capacity earth.
Optionally, adder operation circuit can be four-operational amplifier U4.The first input of four-operational amplifier U4 End is connect with the output end of operational transconductance device gm1, the second input end grounding of four-operational amplifier U4, and is put with the 4th operation The output end connection of big device U4.Optionally, the second input terminal of four-operational amplifier U4 is put by resistance R6 and the 4th operation The output end connection of big device U4, and be grounded by resistance R7.The first input end of four-operational amplifier U4 by resistance R8 with The output end of operational transconductance device gm1 connects, and receives reference current information by resistance R9.
As shown in figure 4, in one embodiment, constant-current control circuit 2 includes current acquisition unit, reference signal acquisition list Member, current compensation unit and control unit.Wherein, current acquisition unit is used to acquire the output current information of constant flow module, And output current information is exported to current compensation unit.Optionally, current acquisition unit can be set to directly export Current information, which exports, gives current compensation unit, also can be set to be exported again after being handled output current information to electric current Compensating unit, for example output electric current is filtered, or carries out calculation process etc..Reference signal acquisition unit with press Control circuit 1 connects, for obtaining the current constant control reference signal of the generation of voltage-equalizing control circuit 1, and by current constant control with reference to letter Number output is to current compensation unit.Optionally, reference signal acquisition unit can be set to current constant control reference signal is straight Switch through output and give current compensation unit, also can be set to be exported again after being handled current constant control reference signal to electric current Compensating unit, for example current constant control reference signal is filtered, or carries out calculation process etc..Current compensation unit point It is not connect with reference signal acquisition unit and current acquisition unit, for according to the constant current control transmitted from reference signal acquisition unit Reference signal processed compensates the output current information transmitted from current acquisition unit, obtains current compensation information, and will be electric Stream compensated information is exported to control unit.Control unit handles current compensation information, obtains control signal, and will control Signal value output constant flow module, control constant flow module export constant electric current, and the output of control constant flow module and reference voltage The corresponding voltage of information.
In some embodiments, current acquisition unit can be the 5th operational amplifier U5.5th operational amplifier U5's First input for hold the first circuit output end by resistance R10 and constant flow module to connect, and by resistance R11 in parallel with 5th capacitor is connect with the output end of the 5th operational amplifier U5.The second output terminal of 5th operational amplifier U5 is for passing through electricity The second current output terminal for hindering R12 and constant flow module connects, and passes through resistance R13 and the 6th capacity earth in parallel.5th fortune The output end for calculating amplifier U5 is connect with current compensation unit.5th operational amplifier U5 is used for the output electric current to constant flow module Information carries out the second scale operation, obtains the second current information, and the second current information is exported to current compensation unit.
In some embodiments, reference signal acquisition unit can be the 6th operational amplifier U6.6th operational amplifier The first input end of U6 is connect by resistance R14 with voltage-equalizing control circuit 1.Optionally, the first of the 6th operational amplifier U6 is defeated Enter end to connect by resistance R14 with the output end of four-operational amplifier U4.The first input end of 6th operational amplifier U6 is also It is connect by resistance R15 and the 7th capacitor in parallel with the output end of the 6th operational amplifier U6.6th operational amplifier U6's Second input terminal is grounded by resistance R16.The output end of 6th operational amplifier U6 is connected by resistance R16 and current compensation unit It connects.6th operational amplifier U6 is used to carry out the first scale operation to current constant control reference signal, obtains the first current information, and First current information is exported to current compensation unit.
In some embodiments, current compensation unit can be the 7th operational amplifier.The first of 7th operational amplifier Input terminal is connect by resistance R17 with the output end of the 5th operational amplifier U5, and passes through the 8th capacitor and the 7th operation amplifier The output end of device connects, and is also connect by concatenated resistance R18 and the 9th capacitor with the output end of the 7th operational amplifier.7th Second input terminal of operational amplifier is connect by resistance R19 with the output end of the 6th operational amplifier U6.7th operation amplifier The output end of device is connect with control unit.7th operational amplifier compensates fortune to the first current information and the second current information It calculates, obtains current compensation information, and current compensation information is exported to control unit.
In some embodiments, control unit can be that by the control chip of output control.Chip is controlled to electricity Stream compensated information is modulated to obtain control signal, and control signal is exported to constant flow module.Control signal can be simulation Signal is controlled, digital controlled signal is also possible to.Optionally, control chip carries out pulse width tune according to current compensation information System obtains the duty cycle signals of the output electric current and output voltage for controlling constant flow module.
The embodiment of the present invention also provides a kind of constant current output power-supply system, including concatenated multiple constant flow modules and with institute State constant flow module multiple constant flow module series connection output voltage-equalizing control circuits 1 correspondingly.Wherein, constant flow module series connection output is equal Pressure control circuit 1 is the control circuit that any of the above-described embodiment provides.
In some embodiments, as shown in figure 3, being said by taking three constant flow module series connection output as an example to the present embodiment It is bright, but it is not intended that the invention is limited to the case where three constant flow modules are connected.The present embodiment includes the first constant flow module, second Constant flow module and third constant flow module.Wherein each module is equipped with corresponding control circuit, corresponding first control of the first constant flow module Circuit processed, the second constant flow module correspond to second control circuit, and third constant flow module corresponds to third control circuit.Each control circuit The output end of corresponding second operational amplifier U2 is linked together by equalizing busbar.If the output voltage of three constant flow modules Whens not equal, the output voltage of the second constant flow module, the output of the second constant flow module are greater than with the output voltage of the first constant flow module Voltage is greater than for the output voltage of third constant flow module, at this time the voltage-equalizing control circuit of first control circuit, i.e., first presses The voltage value highest that control circuit is exported to equalizing busbar.Therefore, the second voltage-equalizing control circuit and the inspection of third voltage-equalizing control circuit Reference voltage is surveyed, second presses compensating unit and third compensating unit to be pressed to compensate respectively to reference current information, i.e., and the Two, which press the operational transconductance device of compensating unit and third that the operational transconductance device of compensating unit is pressed to export, increases, so that respectively corresponding The corresponding current value of the current constant control reference information that receives of constant-current control circuit 2 increase so that the second constant flow module Control signal is carried out to the current constant control reference information respectively received with third constant flow module corresponding constant-current control circuit Duty ratio increased control signal is obtained when modulation.And since three constant flow modules are connected, the output of each constant flow module Electric current is identical, and the output electric current of the second constant flow module and third constant flow module is constantly equal to the output electricity of the first constant flow module at this time Road, therefore the increase of the second constant flow module and third constant flow module duty ratio will make respective output voltage values increase, until When three constant flow module output voltage values are equal, no longer there is voltage difference to the output of equalizing busbar in each voltage-equalizing control circuit, Each constant flow module it is corresponding pressure compensating unit be zero to the compensation of reference current so that each constant flow module holding press it is defeated Out.
In one embodiment, the series connection number of constant flow module can be obtained by following formula:
Wherein, N is constant flow module series connection number, RD2For the resistance value of the second ground resistance, IminFor the minimum electricity of equalizing busbar Stream, VmaxFor the maximum voltage on equalizing busbar.
As shown in figure 5, the embodiment of the present invention also provides a kind of constant flow module series connection output pressure equalizing control method, it is applied to control Make any one in multiple concatenated constant flow modules.Comprising steps of
Step S100 obtains reference voltage information, the output voltage information of constant flow module to be controlled and to be controlled The output current information of constant flow module.
Wherein, reference voltage information can be any information that can embody control constant flow module target output voltage.Than It such as can be the voltage value that need to control constant flow module final output target voltage, be also possible to can to embody the voltage value other Electric signal.The output voltage information of constant flow module to be controlled can be the actual output voltage value of constant flow module, be also possible to Other power information of constant flow module actual output voltage can be embodied, for example amplify or decay by filtering and by pre-determined factor Voltage value or current value etc..The output current information of constant flow module to be controlled can be the reality output of constant flow module Current value is also possible to that other power information of constant flow module actual output current can be embodied, such as by filtering and by predetermined The voltage value or current value etc. of coefficient amplification or decaying.
Step S200 obtains current constant control reference signal according to reference voltage information and output voltage information.
Wherein, current constant control reference signal is used for control the output parameter of constant flow module and providing reference value information.Constant current The output parameter of module includes output voltage and output electric current.Current constant control reference signal can be according to reference voltage by setting Operation method obtain, for example can be and obtained by analog logic circuit computing, be also possible to through computer software algorithm It is calculated.
Step S300 issues control signal, control to constant flow module according to output current information and current constant control reference signal Signal processed is for controlling constant flow module output constant current, and the voltage that output matches with reference voltage information.
Wherein, control signal, which can be, carries out software meter with current constant control reference signal by passing through output current information It obtains, is also possible to obtain by analog logic circuit computing.Control signal can be analog control signal, be also possible to count Word controls signal, exports constant electric current as long as constant flow module can be controlled and exports the voltage to match with reference voltage i.e. It can.
Constant flow module provided in an embodiment of the present invention series connection output pressure equalizing control method, by obtain reference voltage information, Output voltage information and output current information obtain the control of the output electric current and output voltage that can control series connection constant flow module Signal processed carries out output parameter control to constant flow module.And when any one constant flow module breaks down, Ke Yixuan It selects remaining normal constant flow module and carries out Pressure and Control.
As shown in fig. 6, in one of the embodiments, obtain reference voltage information process comprising steps of
Step S110 carries out voltage ratio operation to the corresponding output voltage information of constant flow module to be controlled, obtains the One information of voltage.
Wherein, voltage ratio operation is carried out to the corresponding output voltage information of constant flow module to be controlled, it is appropriate to carry out Decaying or filtering, obtain properly carry out next step operation first voltage value information.First voltage value information can be tool The voltage value of body is also possible to that other power information of reference voltage value, such as current information or power information etc. can be embodied. The first voltage information of the constant flow module to be controlled is used to embody the size of the output voltage of constant flow module to be controlled.
Step S111 obtains the corresponding first voltage information of other constant flow modules.
The control method of the present embodiment is to carry out Pressure and Control to the output voltage of concatenated multiple constant flow modules, therefore, Other than the constant flow module to be controlled, there are also other and the concatenated constant flow module of constant flow module to be controlled.Other are permanent The corresponding first voltage information of flow module, i.e., power information corresponding with the first voltage information of the constant flow module to be controlled. For example, the first voltage information of the constant flow module to be controlled is the specific output voltage of reality of the constant flow module, then its perseverance The corresponding first voltage information of flow module is also and the one-to-one output voltage of other constant flow modules.For another example, this is to be controlled The first voltage information of constant flow module be that the actual output voltage of the constant flow module passes through the obtained electricity of processing by certain coefficient Information is pressed, then the corresponding first voltage information of other constant flow modules is also obtained by certain coefficient by processing, and certainly, other are permanent The actual output voltage of flow module is had much by the treated method of certain coefficient, for example is handled by logic circuit, Or can be handled by software algorithm, as long as letter corresponding with the first voltage information of constant flow module to be controlled can be obtained Breath.
Step S112 selects the first voltage information for corresponding to maximum voltage value in each first voltage information to be determined as described Reference voltage information.In this step, it needs to select each first voltage information of acquisition.The method of selection has very It is more, for example, can directly be compared if first voltage information is specific voltage value, select the first electricity for representing maximum value Press information as reference voltage information.If first voltage information is the information of voltage after processing, calculation can be passed through Method processing searches out the first voltage information for representing maximum output voltage value, which is determined as reference voltage letter Breath.
As shown in fig. 7, obtaining constant current control according to reference voltage information and output voltage information in one of the embodiments, The process of reference signal processed, comprising steps of
Step S210 carries out the first compensation operation to reference voltage information and first voltage information, obtains the first compensation letter Breath.
Wherein, operation is compensated to reference voltage information and first voltage information, is according to reference voltage information to One information of voltage compensates operation.Reference voltage is in concatenated multiple corresponding first voltage information of constant flow module One for selecting corresponding maximum value is determined as reference voltage, and therefore, the corresponding first voltage information of each constant flow module is corresponding Voltage value is not more than reference voltage.And reference voltage embodies the target value of control constant flow module output voltage, therefore to be controlled Difference between the corresponding first voltage information of the constant flow module of system and reference voltage information embodies what constant flow module need to be adjusted Voltage differences.Difference between first voltage information and reference voltage information can obtain control constant flow module voltage output Control amount.Control amount can be information of voltage, be also possible to current information.In one embodiment, according to reference voltage information First voltage information is compensated, the first compensated information for embodying control constant flow module voltage output control amount is obtained. The method of compensation can there are many kinds of, letter can be carried out to reference voltage information and the corresponding voltage value of first voltage information It is single-phase to subtract to obtain voltage difference, then voltage difference is converted into current information, i.e. the first compensated information.It can also be to reference voltage Information and first voltage information are overlapped to obtain superposed signal, by scheduled method the first compensated information of corresponding output.
Step S211 obtains current constant control reference signal according to the first compensated information.
Wherein, current constant control reference signal is used for control the output of constant flow module and providing reference value information.It is mended to first It repays information to be handled, the current constant control reference signal of corresponding control constant flow module output can be obtained.For example, can be based on certain A preset reference signal is compensated with the first compensated information, obtains current constant control reference signal.It is also possible to based on to the One compensated information itself is handled, and carries out being converted to current constant control reference signal to the type of the first compensated information.
As shown in figure 8, obtaining the mistake of current constant control reference signal according to the first compensated information in one of the embodiments, Journey, comprising steps of
Step S221 obtains reference current information.
Wherein, reference current information provides for the treatment process for obtaining current constant control reference signal according to the first compensated information Benchmark foundation.Reference current information can be any information of instruction benchmark foundation.For example, reference current information can be tool The electric current of body sizes values is also possible to indicate the voltage of reference current value, as long as being capable of the place's of being identified compensation according to setting The a reference value of process, and carry out compensation deals.
Reference current information and the first compensated information are overlapped operation and obtain current constant control with reference to letter by step S222 Number.Reference current information and the first compensated information are overlapped operation, can be the current value for indicating reference current information It is simply added, is also possible to phase again after one of progress reverse phase processing with the current value of the first compensated information instruction Add, is also possible to be added to after both progress reverse phase processing.It can be configured according to actual design demand, in order to Reference current information is compensated according to the first compensated information, to obtain current constant control reference signal.
As shown in figure 9, in one of the embodiments, according to output current information and current constant control reference signal to constant current Module issues the process of control signal, comprising steps of
Step S231 carries out the first scale operation to current constant control reference signal and obtains the first current information.
First scale operation is carried out to current constant control reference signal, gain adjustment appropriate is carried out, obtains being appropriate for transporting The first current information calculated.First electric current value information is not limited to electric current, can also be its that can embody current constant control reference information His power information, such as information of voltage, current information etc..
Step S232 carries out the second scale operation to output current information and obtains the second current information.
Second scale operation is carried out to output current information, gain adjustment appropriate is carried out and filters out interference, it is suitable to obtain Carry out the second current information of next step operation.Second current information can be specific current value, be also possible to embody Other power information of output current value, such as information of voltage or power information etc..
Step S233 carries out the second compensation operation to the first current information and the second current information and obtains current compensation letter Breath.Output current information is compensated according to current constant control reference signal, i.e., the second electric current is believed according to the first current information Breath compensates, to obtain current compensation information.There are many kinds of the modes of compensation, can be simply Signal averaging, can also be with It is be added to the current value of power information instruction etc..
Step S234 obtains control signal according to current compensation information.
Current compensation information is carried out to handle available control signal.Control signal be also possible to it is a variety of, for example, can be with It is analog control signal, is also possible to digital controlled signal.As long as the defeated of constant flow module can be controlled to matching with constant flow module Electric current and output voltage out.
The process of control signal is obtained according to the current compensation information in one of the embodiments, comprising steps of
Step S240 carries out pulsewidth modulation to current compensation information, obtains for controlling accounting for for constant flow module output voltage Sky compares signal.
Duty cycle signals are used to control the make-and-break time of the switching device of constant flow module, and the variation of duty ratio is so that when on-off Between change, to influence the variation of the output voltage of constant flow module.Since multiple constant flow modules are to be connected in series, electricity It flows invariable, can only change the output voltage for exporting constant flow module to be controlled.
In wherein some embodiments, the first compensation operation can be PID (Proportion Integration Differentiation, proportional integral differential) compensation.Optionally, the second compensation operation is also possible to PID compensation.Optionally, First compensation operation and the second compensation operation are also possible to 3P3Z (3-Pole 3-Zero, 3 pole, 3 zero point), 2P3Z (2-Pole 3Zero, 2 pole, 3 zero point) etc. the digitial controller of multipoles point multi-zero control operation.
As shown in Figure 10, the embodiment of the present invention also provides a kind of constant flow module series connection output voltage-stabilizing controller, comprising:
Acquisition module 10, for obtaining the output voltage information and perseverance of reference voltage information, constant flow module to be controlled The output current information of flow module；
Computing module 20, for obtaining current constant control reference signal according to reference voltage information and output voltage information；
Output module 30 is controlled, is controlled for being issued according to output current information and current constant control reference signal to constant flow module Signal processed, control signal is for controlling constant flow module output constant current, and the electricity that output matches with reference voltage information Pressure.
The function of the above modules corresponds respectively to each in constant flow module series connection output pressure equalizing control method embodiment A step, details are not described herein again.
The embodiment of the present invention also provides a kind of chip, is stored thereon with computer program, and computer program is held by processor The step of any of the above-described embodiment of the method is realized when row.Specifically, by each step as described in the examples of the method for the present invention Circuit integration is realized into chip, enables the chip to run the series connection of constant flow module described in embodiment of the present invention method defeated Pressure equalizing control method out.
In each embodiment of chip of the present invention, the control method integrated in chip can improve computational accuracy, accelerate convergence speed Degree, and cost of implementation can be reduced, improve control efficiency.
As shown in figure 11, the embodiment of the present invention also provides a kind of determination method of voltage-equalizing control circuit component parameter, Pressing control circuit includes the first operational amplifier U1, second operational amplifier U2, third operational amplifier U3, the 4th operation amplifier The periphery connection circuit of device U4 and operational transconductance device gm1 and each operational amplifier.Voltage-equalizing control circuit component parameters are really Determine method comprising steps of
Step S400 obtains the pole value of constant-current control circuit, the zero point value of constant-current control circuit and current constant control electricity Gain at the low frequency on road, constant-current control circuit maximum output voltage, and the transmission function of constant-current control circuit is simulated, Obtain simulation curve.
Wherein, zero point indicates signal of the constant-current control circuit to some frequency, output response zero.Pole indicates constant current control Circuit processed exports as infinity the signal of some frequency.There are many ways to obtaining pole value and zero point value, can be by right The expression formula of constant-current control circuit transmission function solve and is calculated.It can also be by phase analyser to current constant control electricity Road measures to obtain.Gain can determine specific position of the constant-current control circuit transfer curve in Bode diagram at low frequency It sets.The transmission function of constant-current control circuit is simulated, is according to the zero point value of constant-current control circuit, constant-current control circuit Gain is simulated at the low frequency of pole value and constant-current control circuit, is obtained corresponding with the transmission function of constant-current control circuit Simulation curve.
Step S500, compensates simulation curve, determines compensation zero point value, compensation pole value and constant-current control circuit Cross-over frequency.
Simulation curve is compensated, using compensating unit to the zero point value of constant-current control circuit, constant-current control circuit Pole value compensates, so that simulation curve and constant-current control circuit transfer curve matched, so that it is determined that constant current control The cross-over frequency of circuit processed and the zero point value of compensating unit, i.e. compensation zero point value and the pole value of compensating unit, that is, mend Repay pole value.
Step S600 determines resistance according to the maximum output voltage of the cross-over frequency of constant-current control circuit and constant flow module The capacitance of R1, the resistance value of resistance R2 and first capacitor, and third electricity is determined according to compensation zero point value, compensation pole value The resistance value of appearance, the capacitance of the 4th capacitor and resistance R5.
Wherein, the cross-over frequency that voltage-equalizing control circuit can be determined according to the cross-over frequency of constant-current control circuit, in conjunction with perseverance The maximum output voltage of flow control circuit can determine the gain of differential amplifier circuit, so that it is determined that resistance R1, resistance R2 and First capacitor.Third capacitor, the 4th capacitor can be calculated in conjunction with physical circuit according to compensation zero point value, compensation pole value The resistance value of capacitance and resistance R5.
As shown in figure 12, the pole value of constant-current control circuit, current constant control electricity 2 are obtained in one of the embodiments, The process of gain at the low frequency of zero point value and constant-current control circuit, comprising steps of
Step S410 obtains Bode diagram curve of the constant-current control circuit on phase analyser.
Wherein, the Bode diagram curve of constant-current control circuit can be determined according to the transmission function of constant-current control circuit.Certainly, Being measured by phase analyser to constant flow module more can quickly obtain Bode diagram curve.
Step S411, according to the pole value of Bode diagram curve acquisition constant-current control circuit, the zero point value of constant-current control circuit, And gain at the low frequency of constant-current control circuit.
Wherein, Bode diagram is semilog plot of the transmission function to frequency of linear time-invariant system, utilizes Bode diagram It can be seen that the frequency response of system.From the Bode diagram of constant flow module, pole value, the perseverance of constant-current control circuit 2 can be determined Gain at the zero point value of flow control circuit 2 and the low frequency of constant-current control circuit 2.
The electricity of third capacitor, the 4th capacitor is determined according to compensation zero point value, compensation pole value in one of the embodiments, The process of capacitance and the resistance value of resistance R5, is obtained by following formula:
Wherein, fz is compensation zero point value, and fp is compensation pole value；C3For the capacitance of third capacitor, C4For the 4th capacitor Capacitance, R5For the resistance value of resistance R5.
It wherein, can be in conjunction with compensating unit physical circuit after compensation zero point value and compensation pole value are obtained by compensation The calculation expression of zero point value and pole value calculates third capacitor, the 4th capacitor and resistance R5.Specifically, the present embodiment In, circuit structure as shown in connection with fig. 3 is introduced.Simulation curve is compensated, it can be using operational transconductance device gm1 to mould Pseudocurve compensates.The compensation circuit of operational transconductance device gm1 composition, transmission function GcompAre as follows:
Wherein, gmFor mutual conductance, s is Laplce's complex variable, C3It is capacitor C3Capacitance, C4It is capacitor C4Capacitance, R5It is resistance R5Resistance value.By the available transmission function G of expression formula (1)compZero point and pole be
Wherein fcomp-p0For transmission function GcompFirst pole, fcomp-p1For transmission function GcompSecond pole, fcomp-zFor transmission function GcompZero point.Expression formula (3) and expression formula (4) are wherein combined, with transmission function GcompZero point mend The pole for repaying simulation curve, with transmission function GcompThe zero point of pole compensation simulation curve can make simulation curve and constant current 2 transfer curve matched of control circuit, at this time
fcomp-p1=fz (5)
fcomp-z=fp (6)
It can be obtained in conjunction with expression formula (3), expression formula (4), expression formula (5) and expression formula (6)WithTo obtain capacitor C3, capacitor C4And resistance R5Relationship, determine circuit parameter.
The maximum output of the cross-over frequency of the constant-current control circuit and constant flow module electricity in one of the embodiments, The process for determining the capacitance of resistance R1, the resistance value of resistance R2 and first capacitor is pressed, is obtained by following formula:
Wherein fcrossFor cross-over frequency, C1For the capacitance of first capacitor, VmaxFor the maximum output voltage of constant flow module, V For the maximum output voltage of the first operational amplifier U1 in constant flow module, R1For the resistance value of resistance R1, R2For the resistance of resistance R2 Value.
Generally, 1/6, Ke Yixuan of the cross-over frequency of voltage-equalizing control circuit at least below constant-current control circuit cross-over frequency It is taken as 1/10, and constant-current control circuit cross-over frequency is fcross, therefore selected grading ring bandwidth is fcross/ 10, thus be so that The delayed phase of differential filtering does not influence loop stability, by the pole f of differential filteringdifSelect 20 times of fcrossPlace, then consider perseverance Flow module exports maximum voltage, and selected appropriate attenuation value makes amplifier voltage output in linear output range.Constant flow module is most Big output voltage is Vmax, optionally, the maximum output voltage of the first operational amplifier U1 is set as 9V and then chooses attenuation multiple kdiffop=V/Vmax=9/Vmax, the parameter of available differential attenuation circuit.The pole for learning constant flow module transmission function is Fp, zero point fz, therefore the reset of compensator are as follows: fcomp_z=fp, the pole setting of compensator are as follows: fcomp_p1=fz, according to This calculates compensator respective resistance values and capacitance.
Wherein,
The embodiment of the present invention also provides a kind of computing device of voltage-equalizing control circuit component parameter, comprising:
Analog module, for obtaining the pole value, the zero point value of constant-current control circuit and constant current control of constant-current control circuit Gain at the low frequency of circuit processed, constant-current control circuit maximum output voltage, and the transmission function of constant-current control circuit is carried out Simulation, obtains simulation curve.
Compensating module determines compensation zero point value, compensation pole value and constant current for compensating to the simulation curve The cross-over frequency of control circuit 2.
Computing module is determined according to the maximum output voltage of the cross-over frequency of the constant-current control circuit and constant flow module The capacitance of resistance R1, the resistance value of resistance R2 and first capacitor, and it is true according to the compensation zero point value, compensation pole value Determine the resistance value of third capacitor, the capacitance of the 4th capacitor and resistance R5.
Wherein, computing module includes the first computing module, for calculating the electricity of third capacitor, the 4th capacitor according to expression formula The resistance value of capacitance and resistance R5.
Wherein, computing module further includes the second computing module, for calculating the resistance of resistance R1, resistance R2 according to expression formula The capacitance of value and first capacitor
The function of the above modules corresponds respectively to each in constant flow module series connection output pressure equalizing control method embodiment A step, details are not described herein again.
The embodiment of the present invention also provides a kind of storage medium, is above stored with computer program, computer program is by processor The step of voltage-equalizing control circuit component parameter of the present invention determines method each embodiment is realized when execution.Ordinary skill Personnel are understood that realize that above-mentioned voltage-equalizing control circuit component parameter determines all or part of the process in embodiment of the method, are Relevant hardware can be instructed to complete by computer program, program can be stored in a kind of computer-readable storage Jie In matter, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein storage medium can be magnetic disk, light Disk, read-only memory (Read-Only Memory:ROM) or random access memory (Random Access Memory: RAM) etc..Above-mentioned computer readable storage medium is for storing the ginseng of voltage-equalizing control circuit component provided by the embodiment of the present invention Number determines the program (instruction) of method, wherein voltage-equalizing control circuit provided by the embodiment of the present invention can be executed by executing the program Component parameter determines the step of method, has the corresponding beneficial effect of execution method.It can refer to retouching in above method embodiment It states, is no longer repeated herein.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (16)

1. constant flow module series connection output voltage-equalizing control circuit, which is characterized in that including corresponding with constant flow module voltage-controlled Circuit and constant-current control circuit processed；
The voltage-equalizing control circuit is used to obtain the output voltage information of reference voltage information and the constant flow module, and according to institute It states output voltage information and the reference voltage information and controls reference signal to the constant-current control circuit output constant current；
The constant-current control circuit is used to obtain the output current information of the current constant control reference signal and the constant flow module, And control signal, the control are issued to the constant flow module according to the current constant control reference signal and the output current information Signal processed is for controlling the constant flow module output constant current, and the electricity that output matches with the reference voltage information Pressure.
2. constant flow module series connection output voltage-equalizing control circuit according to claim 1, which is characterized in that
The voltage-equalizing control circuit includes corresponding voltage acquisition unit, presses acquisition unit and press compensating unit；
The voltage acquisition unit is used to obtain the output voltage information of the corresponding constant flow module, and by the output voltage Information is output to the corresponding pressure acquisition unit；It is also used to adopt by equalizing busbar to the corresponding voltage of other constant flow modules Collect unit and exports the output voltage information；
The pressure acquisition unit is used to obtain the output voltage information of the corresponding voltage acquisition unit and described presses The information of voltage of bus determines reference voltage information according to the information of voltage of the output voltage information and the bus, and will The reference voltage information exports to described and presses compensating unit；
The pressure compensating unit is for obtaining reference current information, the output voltage information and reference voltage letter Breath, compensates the reference current information according to the output voltage information and the reference voltage information, obtains constant current Reference signal is controlled, and the current constant control reference signal is output to the constant-current control circuit.
3. constant flow module series connection output voltage-equalizing control circuit according to claim 2, which is characterized in that the voltage acquisition Unit includes that differential amplifier circuit and first voltage follow circuit；
The differential amplifier circuit is used to obtain the output voltage information of the corresponding constant flow module, and to the output voltage Information carries out calculus of differences and obtains first voltage information, and the first voltage information is exported to the first voltage and follows electricity Road；
The first voltage follows circuit for obtaining the first voltage information, and the first voltage information is exported to institute It states and presses acquisition unit and the equalizing busbar.
4. constant flow module series connection output voltage-equalizing control circuit according to claim 3, which is characterized in that the pressure acquisition Unit includes that second voltage follows circuit；
The second voltage follows circuit for obtaining the information of voltage of the first voltage information and the equalizing busbar, root Determine that the corresponding power information of maximum value is benchmark voltage according to the information of voltage of the first voltage information and the equalizing busbar Information, and the reference voltage information is exported to described and presses compensating unit.
5. constant flow module series connection output voltage-equalizing control circuit according to claim 4, which is characterized in that the pressure compensation Unit includes adder operation circuit and operational transconductance device；
The operational transconductance device believes the first voltage for obtaining the first voltage information and the reference voltage information Breath and the reference voltage information carry out operational transconductance and obtain current compensation information, and the current compensation information is exported to institute State adder operation circuit；
The adder operation circuit is for obtaining the reference current information and the current compensation information, to the reference current Information and the current compensation information carry out add operation and obtain current constant control reference signal, and by the current constant control with reference to letter Number output is to the constant-current control circuit.
6. constant flow module series connection output voltage-equalizing control circuit according to claim 5, which is characterized in that the differential amplification Circuit includes the first operational amplifier, and it includes second operational amplifier that the first voltage, which follows circuit,；
First input of first operational amplifier is inputted for holding by the first voltage of resistance R1 and the constant flow module End connection, and connect by resistance R2 and first capacitor in parallel with the output end of first operational amplifier；Described first Second input terminal of operational amplifier is used to connect by resistance R3 with the second output terminal of the constant flow module, and passes through parallel connection Resistance R4 and the second capacity earth；The output end of first operational amplifier is connect with the second operational amplifier；
The first input end of the second operational amplifier is connect with its output end, the second input of the second operational amplifier End is connect with the output end of first operational amplifier, the output end of the second operational amplifier and the second voltage with It is connected with the input terminal of circuit, and for being connect with the equalizing busbar.
7. constant flow module series connection output voltage-equalizing control circuit according to claim 6, which is characterized in that the second voltage Following circuit includes third operational amplifier；The first input end of the third operational amplifier is connect with its output end, described Second input terminal of third operational amplifier for respectively with the output end of the second operational amplifier and the equalizing busbar Connection.
8. constant flow module series connection output voltage-equalizing control circuit according to claim 7, which is characterized in that
The first input end of the operational transconductance device is connect with the output end of the third operational amplifier, the operational transconductance device The second input terminal connect with the output end of first operational amplifier, the output end of the operational transconductance device and the addition Computing circuit connection, and by third capacity earth, and pass through concatenated resistance R5 and the 4th capacity earth.
9. constant flow module series connection output voltage-equalizing control circuit according to claim 8, which is characterized in that the add operation Circuit includes four-operational amplifier, and the first input end of the four-operational amplifier is for obtaining the reference current letter Breath, and connect with the output end of the operational transconductance device；Second input terminal of the four-operational amplifier by resistance R6 with The output end of the four-operational amplifier connects, and is grounded by resistance R7；The output end of the four-operational amplifier is used It is connect in the constant-current control circuit.
10. a kind of constant current output power-supply system, including concatenated multiple constant flow modules and corresponded with the constant flow module Multiple constant flow modules series connection output voltage-equalizing control circuit, which is characterized in that constant flow module series connection output Pressure and Control electricity Road is the described in any item constant flow module series connection output voltage-equalizing control circuits of claim 1-9.
11. the determination method of voltage-equalizing control circuit component parameter, which is characterized in that comprising steps of
It obtains and increases at the low frequency of the pole value of constant-current control circuit, the zero point value of constant-current control circuit and constant-current control circuit The maximum output voltage of benefit, constant-current control circuit, and the transmission function of constant-current control circuit is simulated, it is bent to obtain simulation Line；
The simulation curve is compensated, determine compensation zero point value, compensation pole value and constant-current control circuit passes through frequency Rate；
Resistance R1, resistance R2 are determined according to the maximum output voltage of the cross-over frequency of the constant-current control circuit and constant flow module Resistance value and first capacitor capacitance, and third capacitor, the are determined according to the compensation zero point value, compensation pole value The capacitance of four capacitors and the resistance value of resistance R5.
12. the determination method of voltage-equalizing control circuit component parameter according to claim 11, which is characterized in that described to obtain Take the mistake of gain at the low frequency of the pole value of constant-current control circuit, the zero point value of constant-current control circuit and constant-current control circuit Journey, comprising steps of
Obtain Bode diagram curve of the constant-current control circuit on phase analyser；
According to the pole value of Bode diagram curve acquisition constant-current control circuit, the zero point value of constant-current control circuit and current constant control Gain at the low frequency of circuit.
13. the determination method of voltage-equalizing control circuit component parameter according to claim 12, which is characterized in that according to benefit It repays zero point value, compensate the process that pole value determines the resistance value of third capacitor, the capacitance of the 4th capacitor and resistance R5, lead to Following formula is crossed to obtain:
Wherein, fz is the zero point value, and fp is the pole value；C3For the capacitance of the third capacitor, C4For the 4th electricity The capacitance of appearance, R5For the capacitance of the 5th capacitor.
14. the determination method of voltage-equalizing control circuit component parameter according to claim 13, which is characterized in that described The resistance of resistance R1, resistance R2 are determined according to the cross-over frequency of the constant-current control circuit and the maximum output voltage of constant flow module The process of the capacitance of value and first capacitor, is obtained by following formula:
Wherein fcrossFor the cross-over frequency, C1For the capacitance of the first capacitor, VmaxFor the maximum output voltage, V is The maximum voltage of constant flow module, R1For the capacitance of the resistance R1, R2For the resistance value of the resistance R2.
15. a kind of computing device of voltage-equalizing control circuit component parameter, characterized by comprising:
Analog module, for obtaining pole value, the zero point value of constant-current control circuit and the current constant control electricity of constant-current control circuit Gain at the low frequency on road, constant-current control circuit maximum output voltage, and the transmission function of constant-current control circuit is simulated, Obtain simulation curve；
Compensating module determines compensation zero point value, compensation pole value and current constant control for compensating to the simulation curve The cross-over frequency of circuit；
Computing module determines resistance according to the maximum output voltage of the cross-over frequency of the constant-current control circuit and constant flow module The capacitance of R1, the resistance value of resistance R2 and first capacitor, and the is determined according to the compensation zero point value, compensation pole value The resistance value of three capacitors, the capacitance of the 4th capacitor and resistance R5.
16. a kind of storage medium, which is characterized in that be stored thereon with computer program, the computer program is held by processor The step of any one of claim 11 to 14 the method is realized when row.
CN201910218348.0A 2019-03-21 2019-03-21 Constant flow module series connection output voltage-equalizing control circuit and parameter determination method Pending CN109936286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910218348.0A CN109936286A (en) 2019-03-21 2019-03-21 Constant flow module series connection output voltage-equalizing control circuit and parameter determination method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910218348.0A CN109936286A (en) 2019-03-21 2019-03-21 Constant flow module series connection output voltage-equalizing control circuit and parameter determination method

Publications (1)

Publication Number Publication Date
CN109936286A true CN109936286A (en) 2019-06-25

Family

ID=66987928

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910218348.0A Pending CN109936286A (en) 2019-03-21 2019-03-21 Constant flow module series connection output voltage-equalizing control circuit and parameter determination method

Country Status (1)

Country Link
CN (1) CN109936286A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005012557A (en) * 2003-06-19 2005-01-13 Sony Corp Device and method for decoding signal, and reference voltage generating device
CN102214994A (en) * 2010-04-07 2011-10-12 上海航锐电源科技有限公司 Input-series and output-series boost converter, voltage-equalizing and current-equalizing control circuit and voltage-equalizing and current-equalizing control method
JP2013085382A (en) * 2011-10-11 2013-05-09 Ricoh Co Ltd Switching regulator and method of controlling the same
US20150028842A1 (en) * 2013-07-29 2015-01-29 Microsemi Corp. - Analog Mixed Signal Group, Ltd. Integrated limiter and active filter
CN104980015A (en) * 2015-07-03 2015-10-14 哈尔滨工业大学深圳研究生院 Current difference control method for input-series and output-parallel type DC/DC converter
CN105101551A (en) * 2014-08-11 2015-11-25 矽力杰半导体技术(杭州)有限公司 Multipath LED constant current controller and control method
CN105207468A (en) * 2015-09-11 2015-12-30 哈尔滨工业大学深圳研究生院 Voltage difference control method of DC/DC converter
CN106774586A (en) * 2017-03-27 2017-05-31 深圳怡化电脑股份有限公司 Constant-current control circuit and self-service withdrawal equipment for photoelectric sensor
CN107612309A (en) * 2017-10-16 2018-01-19 四川英杰电气股份有限公司 A kind of series average-voltage control method and device
CN107947588A (en) * 2017-12-05 2018-04-20 南京航空航天大学 With the ISOP systems and its control method for pressing characteristic naturally
CN209627233U (en) * 2019-03-21 2019-11-12 广州致远电子有限公司 Constant flow module series connection output voltage-equalizing control circuit and constant current output power-supply system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005012557A (en) * 2003-06-19 2005-01-13 Sony Corp Device and method for decoding signal, and reference voltage generating device
CN102214994A (en) * 2010-04-07 2011-10-12 上海航锐电源科技有限公司 Input-series and output-series boost converter, voltage-equalizing and current-equalizing control circuit and voltage-equalizing and current-equalizing control method
JP2013085382A (en) * 2011-10-11 2013-05-09 Ricoh Co Ltd Switching regulator and method of controlling the same
US20150028842A1 (en) * 2013-07-29 2015-01-29 Microsemi Corp. - Analog Mixed Signal Group, Ltd. Integrated limiter and active filter
CN105101551A (en) * 2014-08-11 2015-11-25 矽力杰半导体技术(杭州)有限公司 Multipath LED constant current controller and control method
CN104980015A (en) * 2015-07-03 2015-10-14 哈尔滨工业大学深圳研究生院 Current difference control method for input-series and output-parallel type DC/DC converter
CN105207468A (en) * 2015-09-11 2015-12-30 哈尔滨工业大学深圳研究生院 Voltage difference control method of DC/DC converter
CN106774586A (en) * 2017-03-27 2017-05-31 深圳怡化电脑股份有限公司 Constant-current control circuit and self-service withdrawal equipment for photoelectric sensor
CN107612309A (en) * 2017-10-16 2018-01-19 四川英杰电气股份有限公司 A kind of series average-voltage control method and device
CN107947588A (en) * 2017-12-05 2018-04-20 南京航空航天大学 With the ISOP systems and its control method for pressing characteristic naturally
CN209627233U (en) * 2019-03-21 2019-11-12 广州致远电子有限公司 Constant flow module series connection output voltage-equalizing control circuit and constant current output power-supply system

Similar Documents

Publication Publication Date Title
CN105474116B (en) For the method and apparatus that not can access the average value of electric current according to can access Current calculation
JP3312167B2 (en) Method and apparatus for digitally measuring electrical energy consumption
US9577429B2 (en) Paralleling of active filters with independent controls
CN105119307B (en) A kind of high ferro Traction networks low-frequency oscillation suppression method based on Active Disturbance Rejection Control
CN103097178A (en) Device for recharging an automobile battery and method for managing the device
CN107248808B (en) A kind of power converter control circuit of achievable controller parameter Self-tuning System
CN108089141A (en) A kind of error correcting method and device of the current measuring device based on current divider
CN112731179B (en) Method and device for rapidly detecting health state of battery, detector and storage medium
CN106597291A (en) On-line battery parameter estimation method
CN107272792B (en) A kind of constant-current source device for breaker test
CN209627233U (en) Constant flow module series connection output voltage-equalizing control circuit and constant current output power-supply system
CN109387701B (en) Three-phase converter and capacitance estimation method
CN109861523A (en) Pressure equalizing control method, device and the chip of constant flow module series connection output
CN109936286A (en) Constant flow module series connection output voltage-equalizing control circuit and parameter determination method
CN101154818B (en) Method and system for parallel connection of UPS derated models with different capacitance grade
CN108051770A (en) A kind of correction method of three-phase intelligent electric-energy meter
CN105897397B (en) The chaos circuit of pot life constant realization amplitude-frequency control
CN116522773A (en) WPT system modeling method based on data driving
CN116015074A (en) High-precision semiconductor test power supply multi-output control method and system
CN106100820B (en) Amplitude-frequency is adjustable chaos signal generator
CN104600700B (en) Method for calculating incremental transmission loss based on Norton equivalence and generalized inverse of generator
CN105471261B (en) The compensation balance method and apparatus of buck single-phase voltage feedback transformation circuit
CN207625439U (en) A kind of control system of three-phase tri-level VIENNA rectifier
EP1460438B1 (en) Modular electricity meter
CN208060600U (en) A kind of integrator circuit applying to Rogowski coil signal processing

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
CB02 Change of applicant information

Country or region after: China

Address after: 510000 room 306, 3rd floor, 43 Sicheng Road, software park, Tianhe District, Guangzhou City, Guangdong Province

Applicant after: GUANGZHOU ZHIYUAN ELECTRONICS Co.,Ltd.

Address before: 510665 room 517, 1023 Gaopu Road, Tianhe Software Park, Tianhe District, Guangzhou City, Guangdong Province

Applicant before: GUANGZHOU ZHIYUAN ELECTRONICS Co.,Ltd.

Country or region before: China