Converting a modified sine wave inverter into a true sine wave Ensure you purchase a solar inverter that has undergone independently testing and has a demonstrated history of reliable operation for Australia’s often harsh conditions. A long warranty is no guarantee of quality as companies can shut up shop overnight, rendering the warranty useless. Cheap imports are flooding our shores and in many cases, these devices will be inefficient and may pose safety issues. A heavy inverter usually means a high quality heavy-duty power transformer.Įven among sine wave inverters, there’s a great deal of difference in quality. High quality heavy-duty power transformer.An ability to adjust parameters such as auto-start and battery depth of discharge (for off grid systems) is also helpful.
SOLAR POWER CONVERTER MANUAL
This will save you a lot of manual switching and/or wasted power An auto start allows an inverter to switch to a low power consumption standby state when nothing is connected and turned on. We only sell this kind of solar inverter for grid connect and off-grid applications.Ī high quality solar inverter for off grid applications will include: Efficiency has reached up to about 98% and the electricity from these devices is of a higher quality than grid power almost anywhere in the world. To operate higher-end electronic equipment, experts recommend a sine wave inverter. True sine wave invertersĪ true sine wave inverter, also known as a digital inverter, has a design to replicate and even improve the quality of electricity supplied by utility companies. The devices are usually about 70% efficient, so expect some significant power losses if you are using a modified sine wave inverter in your system. They usually lack many features such as auto-start or any type of tweaking ability.
These low cost inverters are generally available from electrical stores, hardware stores, automotive store and electronic suppliers. It is also a fact that cheaper modified sine wave inverters have given this type of inverter a bad name. A modified sine wave is easier and cheaper to produce than a sine wave inverter. Virtually all low cost power inverters are “modified sine wave”. It is cheaper, but may present certain compromises with some loads such as computers, microwave ovens, laser printers, clocks and cordless tool chargers. The differences between these two types of inverters are subtle but significant in the way they operate.Įxamples of modified “sine” wave vs true sine wave:Ī modified sine wave inverter can adequately power some household appliances and power tools. There are basically two types of inverters: modified sine wave (aka modified square wave) and true sine wave. Modified sine wave and true sine wave inverters compared
Peak efficiency – represents the highest efficiency that the inverter can achieve.Although some inverter manufacturers claim high IP ratings suitable for outdoor installation, the quality and location of the seals and ventilation will greatly affect the ability of the inverter to outlast the many years solar installations are expected to work. IP rating – defines the ability of the inverter seals to prevent water and dust ingress.TVs and refrigerators are examples of items that require only relatively low power once running, but require a high surge to start. The inverter must be able to hold its surge rating for at least 5 seconds. Surge Rating: A high surge is required to start some appliances and once running they may need considerably less power to keep functioning.Half Hour Rating: This is handy as the continuous rating may be too low to run a high energy consumption power tool or appliance, however if the appliance was only for occasional use then the half hour rating may well suffice.Continuous Rating: This is the amount of power you could expect to use continuously without the inverter overheating and shutting down.The ratings that you should look at when buying solar inverters (depending on the type) are: Grid connect inverters – true or modified sine wave?.Converting a modified sine wave inverter into a true sine wave inverter?.Modified sine wave and true sine wave inverters compared.You can have the best solar panels available, but if your solar inverter is of poor quality, overall system performance can be greatly impacted. A solar inverter is an integral part of a system, but attention to this aspect is often overlooked.
Without this conversion from DC to AC, special appliances or adapters often need to be purchased – and DC appliances are often more expensive than their AC counterparts. In the context of renewable energy, solar inverters or power inverters are devices that will convert DC battery/solar panel voltage into mains type AC power suitable for use in your home or business.Ĭheck out our huge range of true sine wave inverters
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