CN209627233U - Constant flow module series connection output voltage-equalizing control circuit and constant current output power-supply system - Google Patents
Constant flow module series connection output voltage-equalizing control circuit and constant current output power-supply system Download PDFInfo
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Abstract
It connects the utility model relates to constant flow module and exports voltage-equalizing control circuit and constant current output power-supply system, 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
Technical field
The utility model relates to field of circuit control more particularly to constant flow module series connection output voltage-equalizing control circuit and constant currents
Out-put supply system.
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.
Utility model content
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 utility model embodiment provides a kind of constant flow module series connection output voltage-equalizing control circuit, including equal and constant flow module
Corresponding voltage-equalizing control circuit 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 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；It is also used to that remaining constant flow module is corresponding into constant flow module series connection output by equalizing busbar
Voltage acquisition unit export the 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 utility model also provides a kind of constant current output power-supply system, including concatenated multiple constant flow modules and it is multiple such as
Above-mentioned constant flow module series connection output voltage-equalizing control circuit, each constant flow module is connected with each constant flow module exports voltage-equalizing control circuit
It corresponds.
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 the utility model one embodiment；
Fig. 2 is the module frame chart of the constant flow module series connection output voltage-equalizing control circuit of another embodiment of the utility model；
Fig. 3 is the electricity of three concatenated constant flow module series connection output voltage-equalizing control circuits of the utility model one embodiment
Lu Tu；
Fig. 4 is the circuit diagram of the constant flow module series connection output voltage-equalizing control circuit of the utility model one embodiment；
Fig. 5 is the step block diagram of the utility model one embodiment constant flow module series connection output pressure equalizing control method；
Fig. 6 is the step block diagram that the utility model one embodiment obtains reference voltage information；
Fig. 7 obtains current constant control ginseng according to reference voltage information and output voltage information for the utility model one embodiment
Examine the step block diagram of signal；
Fig. 8 obtains the step of current constant control reference signal according to first compensated information for the utility model one embodiment
Rapid block diagram；
Fig. 9 is the utility model one embodiment according to output current information and current constant control reference signal to constant flow module
Issue the step block diagram of control signal；
Figure 10 is the module frame chart of the utility model one embodiment constant flow module series connection output voltage-stabilizing controller；
Figure 11 is the step block diagram that the utility model one embodiment voltage-equalizing control circuit component parameter determines method；
The step of Figure 12 is the pole value and zero point value that the utility model one embodiment obtains constant flow module transmission function
Block diagram.
Specific embodiment
The purpose of this utility model, technical solution and technical effect in order to better understand, below in conjunction with attached drawing and reality
It applies example and further explaining illustration is carried out to the utility model.It states simultaneously, embodiments described below is only used for explaining this reality
With novel, it is not used to limit the utility model.
As shown in Figure 1, the utility model embodiment provides a kind of constant flow module series connection output voltage-equalizing control circuit, including equal
Press control circuit 1 and constant-current control circuit 2, wherein each constant flow module 3 corresponds to a voltage-equalizing control circuit 1 and a perseverance
Flow control circuit 2 controls.Voltage-equalizing control circuit 1 is connect with constant-current control circuit 2, and voltage-equalizing control circuit 1 obtains constant flow module
Output voltage information and reference voltage information, it is defeated to constant-current control circuit 2 according to output voltage information and reference voltage information
Current constant control reference signal out.Constant-current control circuit 2 obtains the output electric current of current constant control reference signal and constant flow module, according to
Current constant control reference signal and output electric current are sent to constant flow module controls signal, exports constant electricity to control constant flow module
Stream 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.
The utility model embodiment constant flow module series connection output voltage-equalizing control circuit is made by acquiring reference voltage information
For control reference, 2 output constant current of constant-current control circuit control reference signal is controlled, so that each constant flow module 3 is realized
Pressure and Control.Design is simple, and works as any one module when something goes wrong, can automatically select remaining normal module
Maximum 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 pass through the output end of in parallel resistance R2 and first capacitor and first operational amplifier U1
Connection.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 passes through the first ground resistance R00 ground connection, the remote ground terminal and second operational amplifier U2 of the first ground resistance R00
The second input terminal connection, with to second operational amplifier U2 carry out voltage input.The output end of second operational amplifier U2 with
Pressure Acquisition Circuit connection, also connect with equalizing busbar 100, for exporting first voltage information to pressure acquisition unit 12, and
The first voltage information of this constant flow module is exported to drive to the voltage-equalizing control circuit 1 of other constant flow modules by equalizing busbar 100
Dynamic 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
Corresponding voltage in the information of voltage of first voltage information and equalizing busbar 100 is worth a maximum information of voltage as base by circuit
Quasi- information of voltage is output to pressure compensation circuit.Optionally, second voltage follows circuit to can be third operational amplifier U3.The
The first input end of three operational amplifier U3 is connect with the output end of its own, the second input terminal of third operational amplifier U3 with
The output end of second operational amplifier U2 connects, and the second input terminal of third operational amplifier U3 is also used to and 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 utility model embodiment also provides a kind of constant current output power-supply system, including concatenated multiple constant flow modules and
With the constant flow module correspondingly multiple constant flow modules connect output voltage-equalizing control circuit 1.Wherein, constant flow module series connection is defeated
Voltage-equalizing control circuit 1 is the control circuit that any of the above-described embodiment provides out.
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 do not mean that the case where the utility model is only limitted to three constant flow module series connection.The present embodiment include the first constant flow module,
Second constant flow module and third constant flow module.Wherein each module is equipped with corresponding control circuit, the first constant flow module corresponding the
One control circuit, the second constant flow module correspond to second control circuit, and third constant flow module corresponds to third control circuit.Each control
The output end of the corresponding second operational amplifier U2 of circuit is linked together by equalizing busbar.If the output of three constant flow modules
Whens voltage is not equal, the output voltage of the second constant flow module is greater than with the output voltage of the first constant flow module, the second constant flow module
Output 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
The voltage value highest that voltage-equalizing control circuit is exported to equalizing busbar.Therefore, the second voltage-equalizing control circuit and third Pressure and Control electricity
Road detection reference voltage, second presses compensating unit and third compensating unit to be pressed to compensate respectively to reference current information,
I.e. second, which presses 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
The corresponding current value of the current constant control reference information that corresponding constant-current control circuit 2 receives increases, so that the second constant current
Module and the corresponding constant-current control circuit of third constant flow module control the current constant control reference information respectively received
Duty ratio increased control signal is obtained when signal modulation.And since three constant flow modules are connected, each constant flow module
Output 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 of the first constant flow module at this time
Circuit, therefore the increase of the second constant flow module and third constant flow module duty ratio will make respective output voltage values increase, directly
When equal to three constant flow module output voltage values, no longer there is voltage to the output of equalizing busbar in each voltage-equalizing control circuit
Difference, the corresponding pressure compensating unit of each constant flow module is zero to the compensation of reference current, so that each constant flow module keeps equal
Pressure output.
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 utility model embodiment also provides a kind of constant flow module series connection output pressure equalizing control method, application
In controlling 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 series connection output pressure equalizing control method provided by the embodiment of the utility model, by obtaining reference voltage letter
Breath, output voltage information and output current information obtain the output electric current and output voltage that can control series connection constant flow module
Control signal, to constant flow module carry out output parameter control.It, can and when any one constant flow module breaks down
Pressure and Control are carried out with the remaining normal constant flow module of selection.
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 utility model embodiment also provides a kind of constant flow module series connection output voltage-stabilizing controller, packet
It includes:
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 utility model embodiment also provides a kind of chip, is stored thereon with computer program, and computer program is processed
The step of any of the above-described embodiment of the method is realized when device executes.Specifically, by institute in each embodiment of the utility model method
The step of stating realizes that circuit integration into chip, enables the chip to run perseverance described in the utility model embodiment of the method
Flow module series connection output pressure equalizing control method.
In each embodiment of the utility model chip, the control method integrated in chip can improve computational accuracy, accelerate to receive
Speed is held back, and cost of implementation can be reduced, improves control efficiency.
As shown in figure 11, the utility model embodiment also provides a kind of determination side of voltage-equalizing control circuit component parameter
Method, voltage-equalizing control circuit include the first operational amplifier U1, second operational amplifier U2, third operational amplifier U3, the 4th fortune
Calculate the periphery connection circuit of amplifier U4 and operational transconductance device gm1 and each operational amplifier.Voltage-equalizing control circuit element ginseng
Several determination 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, therefore to make
The delayed phase for obtaining differential filtering does not influence loop stability, by the pole f of differential filteringdifSelect 20 times of fcrossPlace, then consider
Constant flow module exports maximum voltage, and selected appropriate attenuation value makes amplifier voltage output in linear output range.Constant flow module
Maximum 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 utility model embodiment 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 electricity of resistance R1, resistance R2 according to expression formula
The capacitance of resistance 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 utility model embodiment also provides a kind of storage medium, is above stored with computer program, and computer program is located
Reason device realizes the step of the utility model voltage-equalizing control circuit component parameter determines method each embodiment when executing.This field
Those of ordinary skill is understood that realize that above-mentioned voltage-equalizing control circuit component parameter determines whole or portion in embodiment of the method
Split flow can instruct relevant hardware to complete by computer program, and program can be stored in a kind of computer can
It reads in storage medium, 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
For magnetic disk, CD, 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 provided by the utility model embodiment
Voltage-equalizing control circuit component parameter determines the program (instruction) of method, wherein the utility model reality can be executed by executing the program
The step of voltage-equalizing control circuit component parameter provided by example determines method is applied, has the corresponding beneficial effect of execution method.It can
Referring to the description in above method embodiment, no longer repeated herein.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
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 remain by equalizing busbar into constant flow module series connection output
The corresponding voltage acquisition unit of remaining constant flow module 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.
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.
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| CN109936286A (en) * | 2019-03-21 | 2019-06-25 | 广州致远电子有限公司 | Constant flow module series connection output voltage-equalizing control circuit and parameter determination method |
| CN109936286B (en) * | 2019-03-21 | 2024-05-03 | 广州致远电子股份有限公司 | Constant-current module series output voltage equalizing control circuit and parameter determining method |
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Effective date of registration: 20220810 Address after: Room 304, 3rd Floor, No. 43, Sicheng Road, Tianhe District, Guangzhou City, Guangdong Province, 510000 Patentee after: Guangzhou Zhiyuan Instrument Co., Ltd. Address before: 510665 room 517, 1023 Gaopu Road, Tianhe Software Park, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU ZHIYUAN ELECTRONICS Co.,Ltd. |
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Granted publication date: 20191112 Effective date of abandoning: 20240503 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |