As a result, the turbines will slow down and the AC frequency will decrease. For instance, if there is too much load-too many devices consuming energy-then energy is removed from the grid faster than it can be supplied. Power frequency is an important indicator for monitoring the health of the electrical grid. The motion of these generators produces AC power as the device rotates, which also sets the frequency, or the number of times the sine wave repeats. Historically, electrical power has been predominantly generated by burning a fuel and creating steam, which then spins a turbine generator, which creates electricity. Solar-plus–battery storage systems rely on advanced inverters to operate without any support from the grid in case of outages, if they are designed to do so. In addition to converting your solar energy into AC power, it can monitor the system and provide a portal for communication with computer networks. If you have a household solar system, your inverter probably performs several functions. They control the flow of electricity in response to outside electrical signals. Transistors are made of semiconductor materials like silicon or gallium arsenide. Today we make electrical switches out of transistors, solid-state devices with no moving parts. A spinning motor, for example, would be used to continually change whether the DC source was connected forward or backward. The first inverters were created in the 19th century and were mechanical. The sine wave is a shape or pattern the voltage makes over time, and it’s the pattern of power that the grid can use without damaging electrical equipment, which is built to operate at certain frequencies and voltages. In addition, filters and other electronics can be used to produce a voltage that varies as a clean, repeating sine wave that can be injected into the power grid. As a result, a DC input becomes an AC output. Inverters are just one example of a class of devices called power electronics that regulate the flow of electrical power.įundamentally, an inverter accomplishes the DC-to-AC conversion by switching the direction of a DC input back and forth very rapidly. In AC, electricity flows in both directions in the circuit as the voltage changes from positive to negative. In DC, electricity is maintained at constant voltage in one direction. It’s a device that converts direct current (DC) electricity, which is what a solar panel generates, to alternating current (AC) electricity, which the electrical grid uses. On request, high quality conformal coating can be provided to protect the inverter's circuit boards against high temperature and humidity in uncontrolled environments.An inverter is one of the most important pieces of equipment in a solar energy system. Our robust INV-W and INV-R products meet stringent EN50155 standards and can be ruggedised for locomotive and marine applications. High reliability is standard throughout the range. You also get an overload capability of 150% for up to 3 seconds making these models particularly suitable for motor type applications. Load sharing is automatically distributed across all of the connected inverters and the outputs synchronised. Where high power and/or redundancy is required, up to 5 identical INV-P units can be operated in parallel connection. Transfer to the secondary line is within 10ms. This allows the inverter to be set to run from a DC or AC input, with an automatic switchover to the backup supply. The INV-B provides an automatic transfer function. Wallmounting and desktop models are available, as well as 19" rackmounting units.įor critical applications such as power stations, a constant supply is required. We offer a variety of case styles to suit your application. This is why all of our inverters are controlled by an intelligent microprocessor. Many electrical devices such as computerised loads require a highly stable sinewave output to operate correctly. Systems start at 125VA up to modular systems capable of 48kVA, with both 115VAC or 230VAC outputs possible. With each unit providing a pure sinewave output, you can depend on our DC-AC inverters to backup your business.
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