CN204649850U - Photovoltaic DC-to-AC converter emc testing system - Google Patents
Photovoltaic DC-to-AC converter emc testing system Download PDFInfo
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- CN204649850U CN204649850U CN201520357483.0U CN201520357483U CN204649850U CN 204649850 U CN204649850 U CN 204649850U CN 201520357483 U CN201520357483 U CN 201520357483U CN 204649850 U CN204649850 U CN 204649850U
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Abstract
The utility model relates to a kind of photovoltaic DC-to-AC converter emc testing system, comprise the high-voltage DC power supply connected successively, photovoltaic DC-to-AC converter to be measured, Electro Magnetic Compatibility equipment and AC power, the contact between described Electro Magnetic Compatibility equipment and described AC power is connected with pull-up resistor or is connected with described high-voltage DC power supply.The utility model, by connecting a pull-up resistor between Electro Magnetic Compatibility equipment and AC power, forms opened loop control, absorbs the energy that described photovoltaic DC-to-AC converter to be measured exports; Or, a backfeed loop is connected to high-voltage DC power supply between Electro Magnetic Compatibility equipment and AC power, form closed-loop control, the energy back exported by described photovoltaic DC-to-AC converter to be measured is to described high-voltage DC power supply, under the prerequisite of the true using state of simulation photovoltaic DC-to-AC converter, improve test accuracy and security, reduce costs.
Description
Technical field
The utility model relates to photovoltaic DC-to-AC converter performance test field, particularly relates to a kind of photovoltaic DC-to-AC converter emc testing system.
Background technology
Along with the development of green novel energy source, photovoltaic industry, photovoltaic DC-to-AC converter industry are more and more burning hoter, described photovoltaic DC-to-AC converter is: the luminous energy that solar panel (direct supply) was collected is reverse into AC power, supplies household electrical appliance or excess energy is fed back to the equipment of electrical network.Before photovoltaic DC-to-AC converter dispatches from the factory, must through tests such as a series of service quality efficiency, technical requirement can be reached to check photovoltaic DC-to-AC converter, wherein, Electro Magnetic Compatibility (the EMC of photovoltaic DC-to-AC converter, English full name: Electro Magnetic Compatibility), namely equipment or system meet the requirements the ability run and any equipment in its environment is not produced to intolerable electromagnetic interference (EMI) in its electromagnetic environment, also day by day come into one's own.
At present, usually the real work characteristic simulating photovoltaic DC-to-AC converter is in laboratory environments needed, test with this Electro Magnetic Compatibility to photovoltaic DC-to-AC converter, this test macro comprises the high-voltage DC power supply (for analog solar panel) connected successively, photovoltaic DC-to-AC converter to be measured, Electro Magnetic Compatibility equipment and AC power and exports, in this test macro, described AC power does not support electric feedback function, very easily burn because electric current recharges, cause device damage, thus raise the cost; If directly select the AC power (as CIPROLINE2145 series or the AC power of chroma 61800 series) of reversible flow, its purchase cost is too high, also can greatly raise the cost.
Utility model content
The utility model provides a kind of photovoltaic DC-to-AC converter emc testing system, exports the problem of very easily burning because electric current recharges to solve AC power in existing photovoltaic DC-to-AC converter emc testing system.
For solving the problems of the technologies described above, the utility model provides a kind of photovoltaic DC-to-AC converter emc testing system, comprise the high-voltage DC power supply connected successively, photovoltaic DC-to-AC converter to be measured, Electro Magnetic Compatibility equipment and AC power, the contact between described Electro Magnetic Compatibility equipment and described AC power is connected with pull-up resistor or is connected with described high-voltage DC power supply.
Preferably, when the contact between described Electro Magnetic Compatibility equipment and described AC power is connected with pull-up resistor, the capacity of described photovoltaic DC-to-AC converter to be measured is less than 30KVA.
Preferably, the output voltage of described high-voltage DC power supply is greater than 300V, is less than 1500V.
Preferably, described Electro Magnetic Compatibility equipment comprises variable-frequency power sources, lightning test instrument, pulse tester or Harmonic Current tester.
Preferably, described high-voltage DC power supply comprises maximum power point tracking system.
Preferably, described maximum power point tracking system analog solar array exports.
Preferably, the solar array of described maximum power point tracking system simulation exports as I-V curve map.
Compared with prior art, a kind of photovoltaic DC-to-AC converter emc testing system tool that the utility model provides has the following advantages:
1, the utility model by connecting a pull-up resistor between Electro Magnetic Compatibility equipment and AC power, forms opened loop control, absorbs the energy that described photovoltaic DC-to-AC converter to be measured exports; Or, a backfeed loop is connected to high-voltage DC power supply between Electro Magnetic Compatibility equipment and AC power, form closed-loop control, the energy back exported by described photovoltaic DC-to-AC converter to be measured is to described high-voltage DC power supply, in laboratory environments, the true using state of photovoltaic DC-to-AC converter is simulated as far as possible exactly;
2, decrease the uncertainty of EMC site test, thus improve accuracy and the security of test, reduce cost simultaneously.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the photovoltaic DC-to-AC converter emc testing system of the utility model embodiment one;
Fig. 2 is the structured flowchart of the photovoltaic DC-to-AC converter emc testing system of the utility model embodiment two.
In Fig. 1: 11-high-voltage DC power supply, 12-photovoltaic DC-to-AC converter to be measured, 13-Electro Magnetic Compatibility equipment, 14-AC power, 15-pull-up resistor;
In Fig. 2: 21-high-voltage DC power supply, 22-photovoltaic DC-to-AC converter to be measured, 23-Electro Magnetic Compatibility equipment, 24-AC power.
Embodiment
In order to the technical scheme of the above-mentioned utility model of more detailed statement, below list specific embodiment and carry out Proof Technology effect; It is emphasized that these embodiments are not limited to for illustration of the utility model limit scope of the present utility model.
Embodiment one
A kind of photovoltaic DC-to-AC converter emc testing system that the utility model provides, please refer to Fig. 1, comprise the high-voltage DC power supply 11, photovoltaic DC-to-AC converter to be measured 12, Electro Magnetic Compatibility equipment 13 and the AC power 14 that connect successively, the contact between described Electro Magnetic Compatibility equipment 13 and described AC power 14 is connected with pull-up resistor 15 or is connected with described high-voltage DC power supply 11.The present embodiment utilizes pull-up resistor 15 to absorb the energy of described photovoltaic DC-to-AC converter to be measured 12 output, in this test macro, the flow direction of electric current remains the direction in Fig. 1 shown in arrow, thus avoid electric current backflow phenomena, and then avoid AC power 14 to burn because electric current recharges, guarantee in laboratory environments, simulate the true using state of photovoltaic DC-to-AC converter as far as possible exactly, improve accuracy and the security of test simultaneously, reduce costs.
Preferably, please continue to refer to Fig. 1, when contact between described Electro Magnetic Compatibility equipment 13 and described AC power 14 is connected with pull-up resistor 15, receive the restriction of pull-up resistor 15, the capacity of described photovoltaic DC-to-AC converter 12 to be measured need be less than 30KVA (kilovolt-ampere).
Preferably, described high-voltage DC power supply 11 requires that high voltage exports, and its output voltage is greater than 300V, is less than 1500V, with the function of analog solar panel.
Preferably, described Electro Magnetic Compatibility equipment 13 comprises variable-frequency power sources, lightning test instrument, pulse tester or Harmonic Current tester etc.
Preferably, described high-voltage DC power supply 11 comprises MPPT maximum power point tracking (Maximum Power PointTracking, be called for short MPPT) system, analog solar array exports, there is corresponding feature fast, and the solar array of the most described maximum power point tracking system simulation exports as I-V curve map.
The method of testing of the photovoltaic DC-to-AC converter emc testing system that the utility model provides is as follows, contact between described Electro Magnetic Compatibility equipment 13 and described AC power 14 connects a pull-up resistor 15, form opened loop control, absorb the energy that described photovoltaic DC-to-AC converter to be measured 12 exports.Improve security and the accuracy of test, reduce cost simultaneously.
Embodiment two
Please refer to Fig. 2, the present embodiment is with the difference of embodiment one: the contact between described Electro Magnetic Compatibility equipment 23 and described AC power 24 is connected with described high-voltage DC power supply 21.Corresponding, the method of testing of photovoltaic DC-to-AC converter emc testing system is: the contact between described Electro Magnetic Compatibility equipment 23 and described AC power 24 is connected to described high-voltage DC power supply 21, form closed-loop control, the energy back exported by described photovoltaic DC-to-AC converter 22 to be measured is to described high-voltage DC power supply 21.
The back electrical energy of AC power 24 to high-voltage DC power supply 21, is realized the recycling of electric energy by the present embodiment, further saves energy, reduces cost of investment.
In sum, a kind of photovoltaic DC-to-AC converter emc testing system that the utility model provides, comprise the high-voltage DC power supply connected successively, photovoltaic DC-to-AC converter to be measured, Electro Magnetic Compatibility equipment and AC power, the contact between described Electro Magnetic Compatibility equipment and described AC power is connected with pull-up resistor or is connected with described high-voltage DC power supply.The utility model, by connecting a pull-up resistor between Electro Magnetic Compatibility equipment and AC power, forms opened loop control, absorbs the energy that described photovoltaic DC-to-AC converter to be measured exports; Or, a backfeed loop is connected to high-voltage DC power supply between Electro Magnetic Compatibility equipment and AC power, form closed-loop control, the energy back exported by described photovoltaic DC-to-AC converter to be measured is to described high-voltage DC power supply, under the prerequisite of the true using state of simulation photovoltaic DC-to-AC converter, improve test accuracy and security, reduce costs.
Obviously, those skilled in the art can carry out various change and modification to utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (7)
1. a photovoltaic DC-to-AC converter emc testing system, comprise the high-voltage DC power supply connected successively, photovoltaic DC-to-AC converter to be measured, Electro Magnetic Compatibility equipment and AC power, it is characterized in that, the contact between described Electro Magnetic Compatibility equipment and described AC power is connected with pull-up resistor or is connected with described high-voltage DC power supply.
2. photovoltaic DC-to-AC converter emc testing system as claimed in claim 1, it is characterized in that, when the contact between described Electro Magnetic Compatibility equipment and described AC power is connected with pull-up resistor, the capacity of described photovoltaic DC-to-AC converter to be measured is less than 30KVA.
3. photovoltaic DC-to-AC converter emc testing system as claimed in claim 1, it is characterized in that, the output voltage of described high-voltage DC power supply is greater than 300V, is less than 1500V.
4. photovoltaic DC-to-AC converter emc testing system as claimed in claim 1, it is characterized in that, described Electro Magnetic Compatibility equipment comprises variable-frequency power sources, lightning test instrument, pulse tester or Harmonic Current tester.
5. photovoltaic DC-to-AC converter emc testing system as claimed in claim 1, it is characterized in that, described high-voltage DC power supply comprises maximum power point tracking system.
6. photovoltaic DC-to-AC converter emc testing system as claimed in claim 5, is characterized in that, described maximum power point tracking system analog solar array exports.
7. photovoltaic DC-to-AC converter emc testing system as claimed in claim 6, is characterized in that, the solar array of described maximum power point tracking system simulation exports as I-V curve map.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520357483.0U CN204649850U (en) | 2015-05-28 | 2015-05-28 | Photovoltaic DC-to-AC converter emc testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520357483.0U CN204649850U (en) | 2015-05-28 | 2015-05-28 | Photovoltaic DC-to-AC converter emc testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204649850U true CN204649850U (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520357483.0U Withdrawn - After Issue CN204649850U (en) | 2015-05-28 | 2015-05-28 | Photovoltaic DC-to-AC converter emc testing system |
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| CN (1) | CN204649850U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880612A (en) * | 2015-05-28 | 2015-09-02 | 快特电波科技(苏州)有限公司 | Photovoltaic inverter electromagnetic compatibility test system and test method |
| CN109490653A (en) * | 2017-09-10 | 2019-03-19 | 苏州电器科学研究院股份有限公司 | Electromagnetic compatibility (EMC) test method of photovoltaic DC-to-AC converter |
-
2015
- 2015-05-28 CN CN201520357483.0U patent/CN204649850U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880612A (en) * | 2015-05-28 | 2015-09-02 | 快特电波科技(苏州)有限公司 | Photovoltaic inverter electromagnetic compatibility test system and test method |
| CN104880612B (en) * | 2015-05-28 | 2019-01-15 | 德凯认证服务（苏州）有限公司 | Photovoltaic DC-to-AC converter electromagnetic compatibility testing system and test method |
| CN109490653A (en) * | 2017-09-10 | 2019-03-19 | 苏州电器科学研究院股份有限公司 | Electromagnetic compatibility (EMC) test method of photovoltaic DC-to-AC converter |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Acer Road, Suzhou City Industrial Park, No. 99 Jiangsu 215006 Patentee after: DeKay certification services (Suzhou) Co., Ltd. Address before: Acer Road, Suzhou City Industrial Park, No. 99 Jiangsu 215006 Patentee before: QuieTek Technology (Suzhou) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150916 Effective date of abandoning: 20190111 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150916 Effective date of abandoning: 20190115 |
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| AV01 | Patent right actively abandoned |