Extracting the highest possible amount of energy from the solar panels
A key function of the inverter is to find the optimal voltage at which the solar panels can generate the maximum power. This voltage is called the Maximum Power Point (MPP) voltage. A standard solar panel generates an open-circuit voltage (Voc) of several dozen volts in daylight. However, when the circuit is closed, this voltage decreases, and current starts to flow. Power (in watts) is the product of voltage (volts) and current (amperes), expressed as P = U x I. By maintaining the voltage at the point where power output is maximized, the highest possible amount of energy is extracted from the solar panels.
The Optimal Balance Between Current and Voltage
The ideal balance between current and voltage varies for each type of panel and depends on sunlight exposure and temperature. Since light conditions and temperature constantly change, it is crucial that the inverter quickly adapts to shifting weather conditions. A good inverter rapidly identifies the MPP voltage. Modern larger inverters come equipped with multiple MPP trackers, allowing systems with different orientations or tilt angles to be connected to a single inverter.
The Purpose of the MPP Tracker
The MPP tracker is essential for achieving high efficiency. Some inverters include specialized MPP tracking software that ensures the highest possible energy yield, even in shaded conditions. Zonnefabriek is happy to assist you in finding the best inverter for your system. Check our inverter overview to compare different models.
