CN204615691U - Be applied to the double-direction control drive circuit of energy storage inverter - Google Patents
Be applied to the double-direction control drive circuit of energy storage inverter Download PDFInfo
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- CN204615691U CN204615691U CN201520301304.1U CN201520301304U CN204615691U CN 204615691 U CN204615691 U CN 204615691U CN 201520301304 U CN201520301304 U CN 201520301304U CN 204615691 U CN204615691 U CN 204615691U
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- drive singal
- energy storage
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- storage inverter
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Abstract
The utility model relates to a kind of double-direction control drive circuit being applied to energy storage inverter, comprises current sampler, DSP module, compare threshold reference voltage generating circuit, comparator and four and door.DSP module produces charge and discharge mode signal, the first drive singal and the second drive singal; Comparator compare current sampler obtain voltage signal and compare threshold reference voltage produce compare threshold reference voltage signal and produce the 3rd drive singal; First with door and second and door input the first drive singal, the second drive singal and charge and discharge mode signal respectively and produce four-wheel drive signal and the 5th drive singal respectively and be connected to the former limit of energy storage inverter; 3rd inputs the first drive singal, the second drive singal and the 3rd drive singal with door and the 4th respectively with door and produces the 6th drive singal and the 7th drive singal respectively and be connected to energy storage inverter secondary.The utility model can realize the double-direction control of energy, is applicable to the energy storage inverter of energy in bidirectional flow.
Description
Technical field
The utility model belongs to converters technical field, relates to the double-direction control drive circuit that a kind of energy storage inverter is suitable for.
Background technology
Be applied to desirable LLC circuit in energy storage inverter when switching frequency fsw >=resonance frequency fr, secondary synchronous rectification MOSFET can drive synchro switch with former limit; And in fsw<fr situation, secondary rectification MOSFET drives will close driving before LrCr resonance terminates, otherwise can cause that energy is counter fills with, even cause resonance to be made mistakes and aircraft bombing.And there is a lot of parasitic parameter in side circuit and can affect LLC resonance, particularly the leakage inductance of transformer cannot accurately control, resonance frequency fr=1/2 π (Lr*Cr) ^0.5 is caused accurately to control, therefore produce and when secondary synchronous rectification drives, can not simply to use a fixing resonance frequency fr to control, and need to carry out controlling to export reasonable synchronization rectification and driving accordingly according to concrete resonance frequency and switching frequency.
But simulation LLC synchronous rectification chip determines open and turn off the moment by detecting synchronous rectification MOSFET pipe both end voltage usually at present.In energy storage inverter, energy demand double-direction control, former secondary all needs drived control, and therefore secondary simply cannot use special simulation synchronous rectification chip controls, otherwise when energy rightabout flows, the driving of synchronous rectification chip controls can affect normal work.So, need to design and be a kind ofly applicable to energy storage inverter that energy two-way circulates and the circuit of respective drive can be carried out as the case may be.
Summary of the invention
The purpose of this utility model is to provide a kind of drive circuit that can realize its double-direction control be rapidly applicable in energy storage inverter.
For achieving the above object, the technical solution adopted in the utility model is:
Be applied to a double-direction control drive circuit for energy storage inverter, comprise
Current sampler, described current sampler is connected with the secondary of described energy storage inverter and gathers secondary current signal and be treated to voltage signal;
DSP module, described DSP module produces and exports the first drive singal and second drive singal of charge and discharge mode signal and alternate conduction respectively;
Compare threshold reference voltage generating circuit, described compare threshold reference voltage generating circuit is connected with an output of described DSP module and described charge and discharge mode signal is converted to compare threshold reference voltage signal;
Comparator, the input of described comparator is connected with the output of described compare threshold reference voltage generating circuit with the output of described current sampler respectively, the voltage signal that described comparator is relatively described and described compare threshold reference voltage signal and produce the 3rd drive singal;
First with door and second and door, described first is connected the first described drive singal and described charge and discharge mode signal respectively with the input of door, described second is connected the second described drive singal and described charge and discharge mode signal respectively with the input of door, the described first four-wheel drive signal produced with door and described second and the 5th drive singal that produces of door be the former limit that the control drive singal on the described former limit of energy storage inverter is connected to described energy storage inverter;
3rd with door and the 4th and door, described the 3rd is connected the first described drive singal and the 3rd drive singal respectively with the input of door, described the 4th is connected the second described drive singal and the 3rd described drive singal respectively with the input of door, the described the 3rd the 6th drive singal produced with door and the described the 4th and the 7th drive singal that produces of door be the secondary that the secondary synchronous rectification signal of described energy storage inverter is connected to described energy storage inverter.
Preferably, described current sampler comprise the secondary current signal described in collection current transformer, be connected with described current transformer and described secondary current signal be converted on the sampled signal treatment circuit of described voltage signal, the rectification be connected with described sampled signal treatment circuit and voltage and lift circuit, described rectification and voltage lift circuit and are connected with described comparator.
Preferably, described four-wheel drive signal and the 5th described drive singal are connected to the former limit of described energy storage inverter by the former limit isolated drive circuit of described energy storage inverter; The 6th described drive singal and the 7th described drive singal are connected to the secondary of described energy storage inverter by the secondary rectification isolated drive circuit of described energy storage inverter.
Because technique scheme is used, the utility model compared with prior art has following advantages: double-direction control drive circuit of the present utility model can realize secondary MOSFET synchronous rectification under charge mode preferably, and the double-direction control of energy can be realized simultaneously, be applicable to the energy storage inverter of energy in bidirectional flow.
Accompanying drawing explanation
Accompanying drawing 1 is the system block diagram of double-direction control drive circuit of the present utility model.
Embodiment
Below in conjunction with embodiment shown in the drawings, the utility model is further described.
Embodiment one: as shown in Figure 1, energy storage inverter comprises the former limit and secondary that are connected by LLC resonant circuit, its limit, Central Plains comprises former limit signal source BUS and is connected to the former limit full-bridge circuit between former limit signal source BUS and the former limit of LLC resonant circuit, and secondary then comprises secondary side signal source BAT and is connected to the secondary full-bridge circuit between the secondary of LLC resonant circuit and secondary side signal source BAT.Former limit full-bridge circuit and secondary full-bridge circuit form full bridge structure by four field effect transistor S1-S4, S5-S8 respectively.LLC resonant circuit comprises transformer Tx and is arranged at resonant capacitance Cr and the resonance inductance L r on its former limit.When charging, energy flows to secondary by former limit, and when discharging, then energy flows to former limit by secondary.
A kind of double-direction control drive circuit being applied to above-mentioned energy storage inverter, comprise current sampler, DSP module, compare threshold reference voltage generating circuit and four and door, wherein, four with door be respectively first with door, second with door, the 3rd and door and the 4th and door.
Current sampler is for gathering the secondary current signal of energy storage inverter and being treated to voltage signal, and the secondary of all the other energy storage inverter is connected.Concrete, current sampler comprise gather secondary current signal current transformer, be connected with current transformer and secondary current signal be converted on the sampled signal treatment circuit of voltage signal, the rectification be connected with sampled signal treatment circuit and voltage and lift circuit, current transformer is arranged at the secondary place of LLC resonant circuit.
DSP module for generation of and export multiple desired signal, specifically comprise charge and discharge mode signal, the first drive singal PWM1 and the second drive singal PWM2.Be L when charge and discharge mode signal is for being H, electric discharge during charging.The duty ratio of the first drive singal PWM1 and the second drive singal PWM2 is 50%, and the phase difference of the two is 180 °, the two alternate conduction.
The input of compare threshold reference voltage generating circuit is connected with DSP module output, thus the charge and discharge mode signal that input DSP module produces, and charge and discharge mode signal is converted to the output of compare threshold reference voltage signal.
Comparator has two inputs, be connected with the output of compare threshold reference voltage generating circuit with the output rectification in current sampler and voltage being lifted circuit respectively, thus input the voltage signal and compare threshold reference voltage signal lifted in rectification and voltage respectively, these two signals compare by comparator, thus produce the 3rd drive singal PWM3 and export.
First is connected with two outputs of DSP module respectively with two inputs of door, thus connects input first drive singal PWM1 and charge and discharge mode signal, and produces four-wheel drive signal PWM4 and export.
Second is connected with two outputs of DSP module respectively with two inputs of door, thus connects input second drive singal PWM2 and charge and discharge mode signal, and produces the 5th drive singal PWM5 and export.
The 5th drive singal PWM5 that the first four-wheel drive signal PWM4 and second produced with door and door produce is the control drive singal on the former limit of energy storage inverter, the two is connected to the former limit of energy storage inverter by the former limit isolated drive circuit of energy storage inverter, thus controls the former limit full-bridge circuit of energy storage inverter.
3rd is connected with the output of comparator with an output of DSP module respectively with two inputs of door, thus connects input first drive singal PWM1 and the 3rd drive singal PWM3, and produces the 6th drive singal PWM6 and export.
4th is connected with the output of comparator with an output of DSP module respectively with two inputs of door, thus connects input second drive singal PWM2 and the 3rd drive singal PWM3, and produces the 7th drive singal PWM7 and export.
The 7th drive singal PWM7 that 3rd the 6th drive singal PWM6 and the 4th produced with door and door produce is the secondary synchronous rectification signal of energy storage inverter, the two is connected to the secondary of energy storage inverter by the secondary rectification isolated drive circuit of energy storage inverter, thus controls the secondary full-bridge circuit of energy storage inverter.
Adopt this programme, under can be implemented in battery charging mode according to user, the synchronous rectification of secondary rectifying tube; and control to regulate the speed soon; adaptation electric current rapid mutation state and abnormal overcurrent protection are closed former secondary instantaneously and are driven function, can realize the double-direction control of energy simultaneously, reduce secondary conduction loss.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection range of the present utility model.
Claims (3)
1. be applied to a double-direction control drive circuit for energy storage inverter, it is characterized in that: described double-direction control drive circuit comprises
Current sampler, described current sampler is connected with the secondary of described energy storage inverter and gathers secondary current signal and be treated to voltage signal;
DSP module, described DSP module produces and exports the first drive singal and second drive singal of charge and discharge mode signal and alternate conduction respectively;
Compare threshold reference voltage generating circuit, described compare threshold reference voltage generating circuit is connected with an output of described DSP module and described charge and discharge mode signal is converted to compare threshold reference voltage signal;
Comparator, the input of described comparator is connected with the output of described compare threshold reference voltage generating circuit with the output of described current sampler respectively, the voltage signal that described comparator is relatively described and described compare threshold reference voltage signal and produce the 3rd drive singal;
First with door and second and door, described first is connected the first described drive singal and described charge and discharge mode signal respectively with the input of door, described second is connected the second described drive singal and described charge and discharge mode signal respectively with the input of door, the described first four-wheel drive signal produced with door and described second and the 5th drive singal that produces of door be the former limit that the control drive singal on the described former limit of energy storage inverter is connected to described energy storage inverter;
3rd with door and the 4th and door, described the 3rd is connected the first described drive singal and the 3rd drive singal respectively with the input of door, described the 4th is connected the second described drive singal and the 3rd described drive singal respectively with the input of door, the described the 3rd the 6th drive singal produced with door and the described the 4th and the 7th drive singal that produces of door be the secondary that the secondary synchronous rectification signal of described energy storage inverter is connected to described energy storage inverter.
2. the double-direction control drive circuit being applied to energy storage inverter according to claim 1, it is characterized in that: described current sampler comprise the secondary current signal described in collection current transformer, be connected with described current transformer and described secondary current signal be converted on the sampled signal treatment circuit of described voltage signal, the rectification be connected with described sampled signal treatment circuit and voltage and lift circuit, described rectification and voltage lift circuit and are connected with described comparator.
3. the double-direction control drive circuit being applied to energy storage inverter according to claim 1, is characterized in that: described four-wheel drive signal and the 5th described drive singal are connected to the former limit of described energy storage inverter by the former limit isolated drive circuit of described energy storage inverter; The 6th described drive singal and the 7th described drive singal are connected to the secondary of described energy storage inverter by the secondary rectification isolated drive circuit of described energy storage inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301304.1U CN204615691U (en) | 2015-05-12 | 2015-05-12 | Be applied to the double-direction control drive circuit of energy storage inverter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301304.1U CN204615691U (en) | 2015-05-12 | 2015-05-12 | Be applied to the double-direction control drive circuit of energy storage inverter |
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| CN204615691U true CN204615691U (en) | 2015-09-02 |
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| CN201520301304.1U Withdrawn - After Issue CN204615691U (en) | 2015-05-12 | 2015-05-12 | Be applied to the double-direction control drive circuit of energy storage inverter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868776A (en) * | 2015-05-12 | 2015-08-26 | 江苏固德威电源科技有限公司 | Bidirectional control driving circuit applied to energy storage inverter |
| WO2021012155A1 (en) * | 2019-07-22 | 2021-01-28 | 深圳欣锐科技股份有限公司 | Drive module of resonant circuit llc |
| CN115622414A (en) * | 2022-12-16 | 2023-01-17 | 西安图为电气技术有限公司 | Synchronous rectification control method, control circuit and synchronous rectification system |
-
2015
- 2015-05-12 CN CN201520301304.1U patent/CN204615691U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868776A (en) * | 2015-05-12 | 2015-08-26 | 江苏固德威电源科技有限公司 | Bidirectional control driving circuit applied to energy storage inverter |
| CN104868776B (en) * | 2015-05-12 | 2016-10-12 | 江苏固德威电源科技股份有限公司 | It is applied to the double-direction control drive circuit of energy storage inverter |
| WO2021012155A1 (en) * | 2019-07-22 | 2021-01-28 | 深圳欣锐科技股份有限公司 | Drive module of resonant circuit llc |
| CN115622414A (en) * | 2022-12-16 | 2023-01-17 | 西安图为电气技术有限公司 | Synchronous rectification control method, control circuit and synchronous rectification system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215163 Kunlun high tech Zone, Jiangsu Province, Suzhou City Road, No. 189 Patentee after: JIANGSU GOODWE POWER SUPPLY TECHNOLOGY CO., LTD. Address before: 215163 Kunlun high tech Zone, Jiangsu Province, Suzhou City Road, No. 189 Patentee before: Jiangsu Goodwe Power Supply Technology Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20161012 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |