Introduction:
Inverters are essential components in solar energy systems, converting direct current (DC) power from solar panels into usable alternating current (AC) power. However, comprehending the technical terminology associated with inverters can be challenging for buyers. In this guide, we will demystify the common jargon found in inverter product descriptions, helping you understand key terms to make informed decisions when purchasing inverters.
1. Power Rating or Capacity:
The power rating of an inverter represents its maximum output capacity, typically measured in kilowatts (kW). Different power ratings are available to accommodate various system sizes. Here are some examples:
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1kW Inverter:
Suitable for small residential systems or small-scale applications. Compatible with a limited number of PV panels or a small battery bank.
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5kW Inverter:
Ideal for medium-sized residential systems. Compatible with a moderate number of PV panels or a medium-sized battery bank.
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20kW Inverter:
Designed for larger residential or commercial systems. Compatible with a substantial number of PV panels or a large battery bank.
It's crucial to match the inverter's power rating with the capacity of your PV panel array or battery bank to ensure optimal performance.
2. MPPT (Maximum Power Point Tracking):
MPPT is a technology used in many inverters to maximise energy production from solar panels. Inverters can have one or multiple MPPT inputs. Each MPPT input can optimise the output of a group of PV panels. Here's what you need to know:
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1MPPT Inverter: Suitable for systems with a single orientation or a limited number of PV panel strings. It can optimise the output from one group of PV panels.
- 2MPPT Inverter: Ideal for systems with different orientations or shading conditions. It can independently optimise the output from two separate groups of PV panels, providing flexibility and maximising energy production.
Choosing the appropriate number of MPPT inputs depends on the configuration of your PV panels and their exposure to sunlight.
3. Electrical System Phase:
Inverters are designed to work with specific electrical system phases. The most common phases are single-phase (1PH) and three-phase (3PH). Here's what you should consider:
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1PH (single phase) Inverter: Suitable for residential and small commercial systems. It is compatible with single-phase electrical systems, which are common in households.
- 3PH (three phase) Inverter: Designed for larger commercial or industrial systems. It is compatible with three-phase electrical systems, offering higher power capacity and robustness for demanding applications.
Ensure the inverter's phase compatibility aligns with your electrical system requirements to ensure seamless integration.
4. DC Isolator:
A DC isolator is a safety device used in photovoltaic (PV) systems to safely disconnect the DC power generated by solar panels from the rest of the system. It ensures that the DC power can be safely isolated during maintenance or emergencies. Having a built-in DC isolator eliminates the need for a separate external isolator and enhances the safety of the overall system.
Conclusion:
Understanding the jargon associated with inverters empowers you as a buyer to make well-informed decisions towards your power lifestyle destination.
In this guide, we explored common terms found in inverter product descriptions, focusing on power rating, MPPT inputs, and electrical system phases.
Remember to match the inverter's power rating with your PV panel array or battery bank capacity. Consider the number of MPPT inputs based on your PV panel configuration, and select the appropriate phase compatibility for your electrical system.
By considering these factors, you can choose the right inverter that optimises energy production and meets your specific requirements.