CN203596747U - Isolated DC-DC converter - Google Patents
Isolated DC-DC converter Download PDFInfo
- Publication number
- CN203596747U CN203596747U CN201320701502.8U CN201320701502U CN203596747U CN 203596747 U CN203596747 U CN 203596747U CN 201320701502 U CN201320701502 U CN 201320701502U CN 203596747 U CN203596747 U CN 203596747U
- Authority
- CN
- China
- Prior art keywords
- output
- circuit
- voltage
- controller
- isolated
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides an isolated DC-DC converter. The isolated DC-DC converter comprises a PWM converting circuit, a power pulse transformer, a high-frequency pulse rectification circuit, a controller, a first electric isolation device and an output voltage adjusting device. An output chopped wave is changed into a power PWM pulse through the PWM converting circuit. The power pulse transformer converts the voltage outputted from the PWM converting circuit from the original terminal to the secondary terminal. The high-frequency pulse rectification circuit rectifies the power pulse outputted from the secondary terminal of the power pulse transformer. The high-frequency pulse rectification circuit and the controller are connected through the first electric isolation device. The output voltage adjusting device comprises a voltage sampling proportion transformation circuit, a voltage comparator, a D/A converter, a second electric isolation device and a fourth electric isolation device. The converter has a function of adjusting output voltage remotely and can be conveniently applied to a power supply system needing dispatch control.
Description
Technical field
The utility model relates to a kind of DC-DC transducer.More particularly, the utility model relates to a kind of isolated DC-DC transducer that can carry out to output voltage remote adjustment.
Background technology
In the civilian system of direct current electricity consumption, load is various household electrical appliance, in some cases, also need to have the interconnection of audio signal or vision signal or media data signal etc. between load, present stage, wired electrical connection form was also a kind of effective form of interconnection.The signal that this interconnection can cause some equipment room electrically altogether.For the short circuit that prevents from producing altogether due to this, and the interference refluxing altogether to signal, requiring load signal ground and connecting between the power supply ground of power-supply system is electricity isolation.And at power supply side, isolation DC-DC can realize ambipolar power supply especially easily.
The source of DC power-supply system electric power often has a variety of, can be from exchanging AC civil power, solar power generation, wind power generation, natural gas power, multiple battery accumulate etc., these different types of electric power, through " conversion ", " mixing ", after " synthesizing ", become the power source in direct current system.Meanwhile, due to the restriction of device, equipment and technology, can not make the infinitely-great single equipment of power, when required power expansion and the high-power system, also " synthesize " and realize by a lot of small-power modules.
To these multiple power sources of direct current system, need suitable scheduling strategy, to realize the high efficiency of using energy source.For example: shine upon sufficient time the preferentially direct utilization of solar energy; While thering is no sunshine, the electric power of having deposited will be used, when having deposited electric power and using up, electric main will be used; And in the time of electricity consumption trough, preferentially use AC wave trough civil power, and meanwhile, can be by the storage of trough civil power, and use afterwards.The electric energy in various sources is converted to direct current, then just can synthesizes more powerful electric energy output according to circuit shown in Fig. 1.Regulate the output of certain converting unit, just can control the size of this converting unit power output, thereby realize the scheduling controlling to multiple power source electric energy output.Wherein for as just can use DC-DC equipment to realize the conversion of AC-to DC from the direct current DC of solar energy.
Known existing DC-DC equipment, the adjusting of output voltage is a resistance-type potentiometer simple realization based on equipment, this mode cannot be applied to the electric power system that needs scheduling controlling.
The information that is disclosed in this background of invention technology part is only intended to deepen the understanding to general background technology of the present invention, and should not be regarded as admitting or imply that in any form this information structure has been prior art known in those skilled in the art.
Utility model content
The utility model is devoted to solve the problems referred to above relevant with prior art, propose a kind of can remote adjustment, set the method that DC-DC exports, in order to realize easily the scheduling controlling of energy resource supply.
The utility model proposes a kind of isolated DC-DC transducer, described isolated DC-DC transducer comprises PWM change-over circuit, output pulses transformer, high-frequency impulse rectification circuit, controller, the first electricity isolation device and output voltage regulator.Wherein, described PWM change-over circuit and input termination alternating voltage, will input copped wave and form power P WM pulse; Described output pulses transformer has former end/time end turn ratio that design needs, and is connected with the output of described PWM change-over circuit, and the voltage of described PWM change-over circuit output is converted to time end from the former end of described output pulses transformer; Described high-frequency impulse rectification circuit is connected with time end of described output pulses transformer, and the output pulses of time end output to described output pulses transformer carries out rectification; Described controller is connected with described PWM change-over circuit, and is connected with described high-frequency impulse rectification circuit by the first electricity isolation device; Described the first electricity isolation device is connected between described high-frequency impulse rectification circuit and described controller; Described output voltage regulator comprises: the transformation of scale circuit of voltage sampling, voltage comparator, D/A converter, the second electricity isolation device, the 4th electricity isolation device, wherein, the transformation of scale circuit of described voltage sampling is connected with the output of described high-frequency impulse rectification circuit, and the output voltage of described circuit of synchronous rectification is sampled to normalized; The input of described D/A converter is connected with controller by the 4th electricity isolation device, and the output of described controller is carried out to D/A conversion; Described voltage comparator has first input end mouth and the second input port, wherein said first input end mouth is connected with the output of described high-frequency impulse rectification circuit, described the second input port is connected with the output of D/A converter, and the output of described voltage comparator is connected with controller by the second electricity isolation device; Described the second electricity isolation device is connected between described voltage comparator and described controller; Described the 4th electricity isolation device is connected between described D/A converter and described controller.
Alternatively, isolated DC-DC transducer has current control device, described current control device comprises current sampling circuit, current loop circuit, and the 3rd electricity isolation device, wherein, described current sampling circuit is connected with the output of described high-frequency impulse rectification circuit, and the output direct current of described high-frequency impulse rectification circuit is carried out to current sampling; The input of described current loop circuit is connected with the output of described current sampling circuit, and input is connected with described controller by the 3rd electricity isolation device; Described the 3rd electricity isolation device is connected between described current loop circuit and described controller.Described controller is controlled the output direct current of described impulse commutation circuit according to the output valve of described current loop circuit.
Alternatively, isolated DC-DC transducer has the simulation control line of input analog voltage amount, and described output voltage regulator and described controller are according to via the analog voltage amount of described simulation control line input, the output voltage of described DC-DC transducer being regulated.
Alternatively, isolated DC-DC transducer has the communication bus of remote setting voltage-target, described communication bus is connected with described controller by isolation R-T unit, described controller produces the value corresponding with described voltage-target according to the tables of data that is stored in described controller inside and exports described output voltage regulator to, and the output voltage of described DC-DC transducer is regulated.
Alternatively, isolated DC-DC transducer has the protective device to output overvoltage, overcurrent, short circuit and equipment excess temperature, and the execution unit of described protective device is power switch.
Alternatively, the described simulation control line of isolated DC-DC transducer communicates the operating state of described DC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
Alternatively, the described communication bus of isolated DC-DC transducer communicates the operating state of described DC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
The isolated DC-DC transducer the utility model proposes, has the function of output voltage being carried out to remote adjustment, can be conveniently used in needing in the electric power system of scheduling controlling.
Method and apparatus of the present utility model has other characteristic and advantage, these characteristics and advantage will be apparent from the accompanying drawing that is incorporated herein and embodiment subsequently, or will in the accompanying drawing being incorporated herein and embodiment subsequently, state in detail, these the drawings and specific embodiments are jointly for explaining certain principles of the present utility model.
Accompanying drawing explanation
By including accompanying drawing herein in and being used from subsequently the embodiment of explanation some principle of the present utility model with accompanying drawing one, the further feature that device of the present utility model has and advantage will become clear or more specifically be illustrated.
Fig. 1 is according to the structural representation of isolated DC-DC transducer of the present utility model.
Reference numeral:
PWM change-over circuit 1
Output pulses transformer 2
High-frequency impulse rectification circuit 3
Controller 4
The transformation of scale circuit 5 of voltage sampling
Voltage comparator 6
D/A converter 7
Isolation R-T unit 10
Communication bus 11
Output voltage regulator 14
Current control device 15
The first electricity isolation device 21
The second electricity isolation device 22
The 3rd electricity isolation device 23
The 4th electricity isolation device 24.
Embodiment
A lot of details are set forth in the following description so that fully understand the utility model.But the utility model can be implemented to be much different from alternate manner described here, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, and therefore the utility model is not subject to the restriction of following public specific embodiment.
Fig. 1 has according to of the present utility model a structural representation that output voltage is carried out to the isolated DC-DC transducer of remote adjustment function.
As shown in Figure 1, isolated DC-DC transducer comprises transformation of scale circuit 5, voltage comparator 6, D/A converter 7, current sampling circuit 8, current loop circuit 9, isolation R-T unit 10, the first electricity isolation device 21, the second electricity isolation device 22, the 3rd electricity isolation device 23 and the 4th electricity isolation device 24 of PWM change-over circuit 1, output pulses transformer 2, high-frequency impulse rectification circuit 3, controller 4, voltage sampling.
PWM change-over circuit 1, output pulses transformer 2, high-frequency impulse rectification circuit 3 are connected in series successively.Wherein, the signal dutyfactor of PWM change-over circuit 1 control inputs direct voltage Vin and change the electric current of the former end that inputs to output pulses transformer 2.The alternating voltage of time end output of output pulses transformer 2 is through the rectification of high-frequency impulse rectification circuit 3, output dc voltage.Controller 4 is connected with PWM change-over circuit 1, PWM change-over circuit 1 is controlled, and be connected with high-frequency impulse rectification circuit 3 by the first electricity isolation device 21, can realize electrical isolation.
Therefore PWM change-over circuit 1, output pulses transformer 2, high-frequency impulse rectification circuit 3, controller 4 and the first electricity isolation device 21 can be realized the most basic function of isolated DC-DC, realize AC-DC conversion.
Transformation of scale circuit 5, voltage comparator 6, D/A converter 7 and second electricity isolation device 22 of voltage sampling formed the output voltage regulator 14 of DC-DC transducer.Wherein, the transformation of scale circuit 5 of the voltage sampling that input is connected with the output of high-frequency impulse rectification circuit 3 and D/A converter 7 are connected to respectively first input end mouth and second input port of voltage comparator 6, and D/A converter 7 is connected with controller 4 with the 4th electricity isolation device 24 by the 3rd electricity isolation device 23 respectively with voltage comparator 6, to realize electrical isolation.Wherein, the normalized result that the transformation of scale circuit 5 of voltage sampling is exported inputs to the first input end mouth of voltage comparator 6, the reference voltage Vref that controller 4 is exported is converted to after analog voltage through D/A converter 7, the second input port of input voltage comparator 6, voltage comparator 6 compares two voltages, the deviation voltage that controller 4 is exported according to voltage comparator 6 is controlled the duty ratio of PWM change-over circuit output pulse, realize the tracking to reference voltage Vref, thereby can indirectly realize the adjusting of the voltage of the final output of DC-DC transducer.
Isolated DC-DC transducer preferably has simulation control line 12, according to the analog voltage amount of inputting via simulation control line 12, realizes the adjusting to DC-DC converter output voltage by voltage regulating device 14 and controller 4.
Isolated DC-DC transducer preferably has communication bus 11, be connected with controller 4 by isolation R-T unit 10 by communication bus 11, utilize the communication bus 12 can remote setting voltage-target, controller 4 produces the value corresponding with voltage-target according to the tables of data that is stored in phase inside and exports voltage regulating device 14 to, this value inputs to voltage comparator 6 equally after the D/A conversion of D/A converter 7, compare with the normalized voltage after the conversion of the transformation of scale circuit 5 of voltage sampling, realize the tracking of the magnitude of voltage to setting, thereby realize the adjusting to DC-DC converter output voltage.
Isolated DC-DC transducer preferably has the protective device 13 to output overvoltage, overcurrent, short circuit and equipment excess temperature, and the execution unit of this protective device can be power switch.In the time of output overvoltage, controller 4 switch-off power switches; In the time there is overcurrent, controller 4 switch-off power switches; By the working temperature of detection power switch and the overheat protector of power switch self, when excess temperature can be realized, automatically shut down power switch.
Preferably, isolated DC-DC transducer communicates its operating state and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback by simulation control line 12 to upper control main frame.
Alternatively, isolated DC-DC transducer communicates its operating state and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback by communication bus 11 to upper control main frame.
Claims (7)
1. an isolated DC-DC transducer, is characterized in that, described isolated DC-DC transducer comprises:
PWM change-over circuit, the input termination alternating voltage of described PWM change-over circuit, will input copped wave and form power P WM pulse;
Output pulses transformer, has former end/time end turn ratio that design needs, and is connected with the output of described PWM change-over circuit, and the voltage of described PWM change-over circuit output is converted to time end from the former end of described output pulses transformer;
High-frequency impulse rectification circuit, is connected with time end of described output pulses transformer, and the output pulses of time end output to described output pulses transformer carries out rectification;
Controller, described controller is connected with described PWM change-over circuit, and is connected with described high-frequency impulse rectification circuit by the first electricity isolation device;
The first electricity isolation device, is connected between described high-frequency impulse rectification circuit and described controller; And
Output voltage regulator, described output voltage regulator comprises:
The transformation of scale circuit of voltage sampling, the transformation of scale circuit of described voltage sampling is connected with the output of described high-frequency impulse rectification circuit, and the output voltage of described circuit of synchronous rectification is sampled to normalized;
D/A converter, the input of described D/A converter is connected with controller by the 4th electricity isolation device, and the output of described controller is carried out to D/A conversion;
Voltage comparator, described voltage comparator has first input end mouth and the second input port, wherein said first input end mouth is connected with the output of described high-frequency impulse rectification circuit, described the second input port is connected with the output of D/A converter, and the output of described voltage comparator is connected with controller by the second electricity isolation device;
The second electricity isolation device, is connected between described voltage comparator and described controller; And
The 4th electricity isolation device, is connected between described D/A converter and described controller.
2. isolated DC-DC transducer according to claim 1, is characterized in that having current control device, and described current control device comprises:
Current sampling circuit, described current sampling circuit is connected with the output of described high-frequency impulse rectification circuit, and the output direct current of described high-frequency impulse rectification circuit is carried out to current sampling;
Current loop circuit, the input of described current loop circuit is connected with the output of described current sampling circuit, and input is connected with described controller by the 3rd electricity isolation device;
The 3rd electricity isolation device, is connected between described current loop circuit and described controller;
Wherein, described controller is controlled the output direct current of described impulse commutation circuit according to the output valve of described current loop circuit.
3. isolated DC-DC transducer according to claim 1 and 2, it is characterized in that having the simulation control line of input analog voltage amount, described output voltage regulator and described controller are according to via the analog voltage amount of described simulation control line input, the output voltage of described DC-DC transducer being regulated.
4. isolated DC-DC transducer according to claim 1 and 2, it is characterized in that having the communication bus of remote setting voltage-target, described communication bus is connected with described controller by isolation R-T unit, described controller produces the value corresponding with described voltage-target according to the tables of data that is stored in described controller inside and exports described output voltage regulator to, and the output voltage of described DC-DC transducer is regulated.
5. isolated DC-DC transducer according to claim 1 and 2, is characterized in that having the protective device to output overvoltage, overcurrent, short circuit and equipment excess temperature, and the execution unit of described protective device is power switch.
6. isolated DC-DC transducer according to claim 3, is characterized in that described simulation control line communicates the operating state of described DC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
7. isolated DC-DC transducer according to claim 4, is characterized in that described communication bus communicates the operating state of described DC-DC transducer and overvoltage, overcurrent, excess temperature malfunction Real-time Feedback to upper control main frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701502.8U CN203596747U (en) | 2013-11-07 | 2013-11-07 | Isolated DC-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701502.8U CN203596747U (en) | 2013-11-07 | 2013-11-07 | Isolated DC-DC converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596747U true CN203596747U (en) | 2014-05-14 |
Family
ID=50677603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320701502.8U Expired - Lifetime CN203596747U (en) | 2013-11-07 | 2013-11-07 | Isolated DC-DC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491428A (en) * | 2018-11-05 | 2019-03-19 | 深圳市德普微电子有限公司 | A kind of power control circuit |
-
2013
- 2013-11-07 CN CN201320701502.8U patent/CN203596747U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491428A (en) * | 2018-11-05 | 2019-03-19 | 深圳市德普微电子有限公司 | A kind of power control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hofer et al. | Hybrid AC/DC building microgrid for solar PV and battery storage integration | |
| CN102215012B (en) | Bidirectional transformation system of solar energy and electric energy | |
| Liu et al. | Photovoltaic DC-building-module-based BIPV system—Concept and design considerations | |
| CN202111642U (en) | Solar energy electric energy bidirectional transformation system | |
| US20140333141A1 (en) | Photovoltaic (pv)-based ac module and solar systems therefrom | |
| EP3788697A1 (en) | Systems and methods of dc power conversion and transmission for solar fields | |
| Manojkumar et al. | Power electronics interface for hybrid renewable energy system—A survey | |
| CN102545580B (en) | In-system programming universal PFC multifunctional processor | |
| CN203596754U (en) | Isolated ac-dc converter | |
| CN105960746B (en) | The method for being formed and operating multiple terminals electric system | |
| CN201392462Y (en) | Energy-saving switch device | |
| CN113193755B (en) | Multi-port converter based on topology integration, control method and system | |
| CN201918762U (en) | Battery charging and discharging system with energy in bidirectional flow | |
| CN203596747U (en) | Isolated DC-DC converter | |
| CN203596636U (en) | AC-DC charger | |
| CN107154730B (en) | A kind of generation of electricity by new energy two-way changing circuit and control method | |
| CN112106285A (en) | High-efficiency converter arrangement for charging systems for electric vehicles for connecting an electrical network, a battery store and other sources | |
| CN105048505A (en) | Wind-light complementary micro-grid system used for intelligent cell | |
| Sansare et al. | Design of standalone PV charging system for lead acid battery using controlled boost converter | |
| CN102487199B (en) | Soft switching grid-connected inverter | |
| CN201813582U (en) | Photovoltaic electricity generation controller used for LED public lighting system | |
| CN202333838U (en) | Isolated grid-connected inverter power supply | |
| RU66124U1 (en) | SYSTEM OF AUTONOMOUS POWER SUPPLY OF CONSUMERS | |
| CN210016290U (en) | Microgrid control system | |
| KR101278533B1 (en) | Module intergrated power regulator system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |