Photovoltaic synchronization inverter with photovoltaic array IV test function and test method

A photovoltaic array and testing function technology, which is applied in photovoltaic modules, photovoltaic power generation, and measurement of electrical variables, etc., can solve problems such as difficult to meet various power stations and inconvenient operation, achieve convenient service life and fault analysis, and improve power generation efficiency Effect
CN101752877AInactive Publication Date: 2010-06-23HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEFEI UNIV OF TECH
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a photovoltaic synchronization inverter with a photovoltaic array IV test function, which is composed of an inverter main circuit and a system controller; the inverter main circuit adopts an adjustable-voltage inverter and comprises a one-phase and three-phase synchronization system; the photovoltaic synchronization inverter is characterized in that: a current sensor CT1 for measuring photovoltaic array input current is arranged between a photovoltaic array input port and a filter capacitor C1; a direct-current bus bar voltage sensor VT1 for measuring the voltage of the filter capacitor C1 end is arranged; a direct-current breaker K1 is arranged at the photovoltaic array output port, the photovoltaic array output general current is input to the photovoltaic synchronization inverter, the direct-current bus bar voltage sensor VT1 and the current sensor CT1 through the direct-current breaker K1; the photovoltaic synchronization inverter is suitable for the conventional synchronization inverting system, can test the photovoltaic array IV characteristics of the system conveniently, and the test data is used for analyzing and evaluating the photovoltaic array characteristics of the system and the power generating capacity.
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Description

technical field

[0001] The invention relates to a high-power photovoltaic grid-connected inverter device of tens of kilowatts to MW level, more specifically a photovoltaic grid-connected inverter with a photovoltaic array IV test function and a testing method. Background technique

[0002] With the rapid development of solar photovoltaic grid-connected power generation, large-scale solar photovoltaic grid-connected power generation is the future development trend, and there will be more and more large or extra-large photovoltaic grid-connected power stations. Photovoltaic arrays are an important component of photovoltaic power generation systems Part of it determines the power generation of the photovoltaic system and also accounts for the main part of the cost of the photovoltaic system. Theoretically, the power generation of a photovoltaic array is the sum of the power generated by all the single solar cell components that make up the array, but in practice, the power gene...

Claims

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