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Navigating the challenges posed by winter conditions is crucial for photovoltaic systems, especially concerning inverters. In a recent Solis seminar, experts shared insights on optimizing inverter performance in low-temperature environments.
Effects of Low Temperature on Inverter Operation:
Voltage Fluctuations:
Low temperatures elevate the open circuit voltage of PV modules, causing an increase in the inverter system voltage. Prolonged exposure to high pressure affects the inverter’s switching device, impacting its life and reliability. In low temperature conditions, the PV string voltage could exceed the inverter’s input voltage range, leading to potential issues.
Temperature-Sensitive Components:
Internal components like IGBTs, DSPs, capacitors, etc., have specific temperature ranges for optimal performance. Operating outside these ranges may affect the lifespan and reliability of the inverter.
Rapid temperature changes, induced by low temperatures, can stress these components, negatively affecting performance.
The temperature stress caused by repeated high and low temperature changes will lead to the reduction of the physical or chemical properties of the inverter material and device, affecting the working performance or service life of the product |
