CN201312280Y - Load balance device for digital generator set with a plurality of oil engines - Google Patents
Load balance device for digital generator set with a plurality of oil engines Download PDFInfo
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- CN201312280Y CN201312280Y CNU2008201007031U CN200820100703U CN201312280Y CN 201312280 Y CN201312280 Y CN 201312280Y CN U2008201007031 U CNU2008201007031 U CN U2008201007031U CN 200820100703 U CN200820100703 U CN 200820100703U CN 201312280 Y CN201312280 Y CN 201312280Y
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- 230000005611 electricity Effects 0.000 claims description 22
- 210000002268 wool Anatomy 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Abstract
The utility model discloses a load balance device for a digital generator set with a plurality of oil engines, comprising a current sensor and a load balance control part, wherein the current sensor is used for detecting output current of generators, the load balance control part adjusts the output current of each generator to achieve balance by controlling a controllable rectification circuit or a rectified DC power adjusting circuit of the corresponding generator according to the relation between the output current of each generator and an average current. The output of the generator is suitably reduced when the current of a certain generator is larger than an average value and is amplified when the current of the generator is smaller than the average value so that the output of the generators are basically kept balanced, the oil engines achieve balanced load and the generators achieve ideal power generating effect. If an output load is a reference variable, the load balance device has the same theory.
Description
Technical field
The utility model relates to the big moving rate permanent magnetism digital electricity generating group that is formed in parallel by many table oils machine, specifically a kind of device of the load balancing of each oily machine after the parallel connection of the above-mentioned heavy wool machine digital electricity generating group of finger solution.
Background technology
Traditional excitation gasoline/diesel engine generator, the frequency of output AC electricity and oily machine rotating speed are proportional, and therefore the alternating current that can't guarantee each generating set can not in parallel generate electricity with frequency and synchronous.Therefore the voltage of digital electricity generating output AC electricity, frequency, phase place can realize the generating in parallel of many digital electricity generating groups by its controller (inverter) control.Digital electricity generating is parallel with DC parallel and exchanges dual mode in parallel: DC parallel is the direct current of output after each self-rectifying and together of each permanent magnet generator, again by an external output AC of inverter; Exchanging parallel connection is that each permanent magnet generator respectively has an inverter, these inverter synchronous workings, the alternating current of each inverter output and external more together output AC.In theory, can realize a plurality of less bigger electric energy of oily machine output by the parallel connection generating.In fact, need also to guarantee that whole load shares comparatively uniformly on each oily machine, otherwise will an oily machine fully loaded, and other oily machine also is in zero load, promptly each oily machine is load unbalanced, has a strong impact on the effect of generating in parallel.
The utility model content
At the prior art above shortcomings, the purpose of this utility model provides a kind of heavy wool machine digital electricity generating group load equalizer, the balance of each oily machine load when using this device can realize heavy wool machine parallel connection generating.
The technical solution of the utility model is achieved in that a kind of heavy wool machine digital electricity generating group load equalizer, it is made up of current sensor and load balancing control assembly, current sensor and generator are one by one to being applied to detect corresponding generator output current, the output current of all current sensor senses is transferred to the load balancing control assembly, the load balancing control assembly is according to the relation of the output current and the average current of each generator, the output current that controlled rectification circuit by controlling corresponding generator or the direct current power regulating circuit behind the corresponding generator commutation are regulated each generator.
Above-mentioned generator output current is the alternating current of each generator output or the direct current after rectification.
Also the output current of above-mentioned generator can be changed into output load and control by identical mode and realize load balancing.
Adopt this load equalizer, when the suitable output that reduces this motor during greater than mean value of certain current of electric, the output that increases this motor when less than mean value makes the output of each motor in a basic balance thus, realize each oily machine load balancing, make generating in parallel reach desirable effect.When with output load when considering, principle is the same.
Description of drawings
First kind of execution mode structural representation of Fig. 1-the utility model;
Second kind of execution mode structural representation of Fig. 2-the utility model;
The third execution mode structural representation of Fig. 3-the utility model;
The 4th kind of execution mode structural representation of Fig. 4-the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Heavy wool machine digital electricity generating group load equalizer of the present utility model, it is made up of current sensor and load balancing control assembly, current sensor and generator are one by one to being applied to detect corresponding generator output current, the output current here both can be a preceding direct current in parallel, also can be preceding alternating current in parallel.The output current of all current sensor senses is transferred to the load balancing control assembly, the load balancing control assembly calculates average current according to the signal of current sensor, and according to the relation of the output current and the average current of each generator, the output current that controlled rectification circuit by controlling corresponding generator or the direct current power regulating circuit behind the corresponding generator commutation are regulated each generator.If the output current of certain generator, is then controlled the direct current power regulating circuit (pwm control circuit) after its SCR rectification circuit or the rectification greater than mean value, reduce its load, reduce output current; Otherwise,, make the load current of each oily machine roughly the same thus if this generator output current less than mean value, then increases its output current.
Also can calculate the output load of each generator according to electric current, voltage, control SCR rectification circuit or pwm control circuit realize that the load of each oily machine is basic identical, and principle is identical with the mode that detects electric current.
The oily machine here both can be that petrol engine also can be a Diesel engine.
Digital electricity generating shown in Figure 1 is the DC parallel mode, regulates the output current of each generator by the controlled rectification circuit of controlling corresponding generator, and the output current that obtains is the direct current after rectification.
Digital electricity generating shown in Figure 2 also is the DC parallel mode, regulates the output current of each generator by controlling direct current power regulating circuit behind the corresponding generator commutation, and the output current that obtains is the direct current after rectification.
Digital electricity generating shown in Figure 3 is for exchanging parallel way, regulates the output current of each generator by the controlled rectification circuit of controlling corresponding generator, and the output current that obtains is the direct current after rectification.
Digital electricity generating shown in Figure 4 is for exchanging parallel way, regulates the output current of each generator by the controlled rectification circuit of controlling corresponding generator, and the output current that obtains is the alternating current of each generator output.
The load balancing control assembly can be made an independently controller, also can be to be integrated with inverter controller, is called a functional part of inverter.
Claims (6)
1, a kind of heavy wool machine digital electricity generating group load equalizer, it is characterized in that: it is made up of current sensor and load balancing control assembly, current sensor and generator are one by one to being applied to detect corresponding generator output current, the output current of all current sensor senses is transferred to the load balancing control assembly, the load balancing control assembly is regulated the output current of each generator according to the relation of the output current and the average current of each generator by the controlled rectification circuit of controlling corresponding generator.
2, a kind of heavy wool machine digital electricity generating group load equalizer, it is characterized in that: it is made up of current sensor and load balancing control assembly, current sensor and generator are one by one to being applied to detect corresponding generator output current, the output current of all current sensor senses is transferred to the load balancing control assembly, the load balancing control assembly is according to the relation of the output current and the average current of each generator, regulates the output current of each generator by controlling direct current power regulating circuit behind the corresponding generator commutation.
3, a kind of heavy wool machine digital electricity generating group load equalizer, it is characterized in that: it is made up of load detector and load balancing control assembly, load detector and generator are one by one to being applied to detect corresponding generator output load, the output load that all load detectors detect is transferred to the load balancing control assembly, the load balancing control assembly is regulated the output load of each generator according to the output load of each generator and the relation of average load by the controlled rectification circuit of controlling corresponding generator.
4, a kind of heavy wool machine digital electricity generating group load equalizer, it is characterized in that: it is made up of load detector and load balancing control assembly, load detector and generator are one by one to being applied to detect corresponding generator output load, the output load that all load detectors detect is transferred to the load balancing control assembly, the load balancing control assembly is according to the output load of each generator and the relation of average load, regulates the output load of each generator by controlling direct current power regulating circuit behind the corresponding generator commutation.
5, according to claim 1 or 2 or 3 or 4 described heavy wool machine digital electricity generating group load equalizers, it is characterized in that: above-mentioned generator output current is the alternating current of each generator output.
6, according to claim 1 or 2 or 3 or 4 described heavy wool machine digital electricity generating group load equalizers, it is characterized in that: above-mentioned generator output current is the direct current after rectification of each generator output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201007031U CN201312280Y (en) | 2008-11-26 | 2008-11-26 | Load balance device for digital generator set with a plurality of oil engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201007031U CN201312280Y (en) | 2008-11-26 | 2008-11-26 | Load balance device for digital generator set with a plurality of oil engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201312280Y true CN201312280Y (en) | 2009-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201007031U Expired - Fee Related CN201312280Y (en) | 2008-11-26 | 2008-11-26 | Load balance device for digital generator set with a plurality of oil engines |
Country Status (1)
| Country | Link |
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| CN (1) | CN201312280Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211195A1 (en) * | 2016-06-07 | 2017-12-14 | 维尔纳（福建）电机有限公司 | Reconfigurable single-phase digital frequency-variable generator |
| CN108594642A (en) * | 2018-04-23 | 2018-09-28 | 深圳市华之任有限公司 | Run power cycle variation device group's load the Uniform Control method and system |
-
2008
- 2008-11-26 CN CNU2008201007031U patent/CN201312280Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211195A1 (en) * | 2016-06-07 | 2017-12-14 | 维尔纳（福建）电机有限公司 | Reconfigurable single-phase digital frequency-variable generator |
| CN108594642A (en) * | 2018-04-23 | 2018-09-28 | 深圳市华之任有限公司 | Run power cycle variation device group's load the Uniform Control method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING RUINAI TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HE PEIXIANG Effective date: 20100618 Free format text: FORMER OWNER: YANG SHI XIAN JIKAI |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400716 COLLEGE OF ENGINEERING AND TECHNOLOGY, SOUTHWEST AGRICULTURAL UNIVERSITY, BEIBEI DISTRICT, CHONGQING CITY TO: 400700 NO.19, YUNKAI ROAD, BEIBEI DISTRICT, CHONGQING CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100618 Address after: 400700, Beibei District, Chongqing No. 19 Open Cloud Road Patentee after: Chongqing ruinai Technology Co., Ltd. Address before: 400716 School of engineering and technology, Southwest Agricultural University, Beibei District, Chongqing Co-patentee before: Yang Shi Patentee before: He Peixiang Co-patentee before: Xian Jikai |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20151126 |