What is an inverter for?
The simplest and most common use of an inverter is to use it as a backup or emergency source of 220 volts from a car.
You connect the inverter to the battery (12 volts DC) and then plug your household appliance into a 220 volt outlet on the inverter case, receiving a 220 volt mobile source. With the help of an inverter, you can power almost any household appliances: kitchen appliances, microwave oven, power tools, TV, stereo, computer, printer, refrigerator, not to mention any lighting devices. All this technique you can use anywhere and whenever you want!
Today, telecommunication and information systems are being used more and more often, as well as computer control systems for equipment. Such systems require uninterrupted power supply in the event of a power outage. Very often, battery-powered inverter systems are a great solution when power must be available all the time.
Here is a simple example: the electricity was cut off at the dacha, and you do not have light, you cannot watch your favorite TV series in the evening, and, what is most unpleasant, the refrigerator dripped. With an inverter and batteries, you can provide yourself with electricity for at least a few hours. Another example. The inverter will come in handy, autonomously, from a car battery, to use power tools (drills, saws, planes, etc.) when building or repairing objects where there is no 220 volt network nearby.
The uninterruptible power system installed in your home, and includes batteries and an inverter, will allow you to become independent from power outages of 220 volts. In case of shutdown of an external network, lighting and devices of your house will be powered from rechargeable batteries through the inverter. After the resumption of electricity supply, the inverter will automatically charge the batteries. A particular area of application for inverters is solar powered systems. Usually, solar panels produce 24 volts direct current, which is then converted by an inverter into a 220 volt household AC current.
Inverter or generator?
You can also use a generator as a backup power source , but the inverter system has advantages, for example, noiselessness, and the fact that you do not need to buy gasoline / diesel and do not need to change the oil and filters in the engine of the generator. The inverter system has no moving parts and therefore is more reliable and requires almost no service.
In some systems of uninterrupted power supply of cottages, inverter power systems can be supplemented with a generator for recharging the batteries and achieving longer battery life. Some high-tech Xantrex SW type inverters have built-in generator start control relays that allow you to turn the generator on or off when the battery charge is demanded. In this case, there is no need to buy the generator “with automation”.
Inverter system is a complex of devices for uninterrupted power supply of private houses, cottages, office premises, banks, medical institutions, mobile complexes, etc. Its main elements are power inverters Energy, which serve as an uninterruptible power supply and energy intensive rechargeable batteries.
The construction of a specific system directly depends on the requirements dictated by the user. Invertor PremiumVolt systems in basic execution are completed with one or several OutBack Power inverters, batteries, proprietary system controller and elements for installation.
PracticVolt systems have a simpler configuration and consist of Victron Energy inverters and drives. At the request of the customer, battery controllers for battery monitoring, battery racks and other devices can be added to the basic configuration. The price of uninterruptible power systems – from 40 thousand rubles for the base model. High-tech single-phase or three-phase electrical systems are built from the components, which can operate from batteries without power supply from a few hours to a day, without the need for maintenance, consumables and refueling. The specific battery life is determined by the intensity of energy consumption at the facility and the number of batteries.
All OutBack Power models are warranted for up to five years, and for Victron Energy devices, up to two, subject to the rules for installation and use. In this case, the life of the inverter – uninterruptible power supply, declared by the manufacturer, is 25 years, and for special batteries – 10-12 years. Batteries should be replaced after the expiration period.
The principle of operation of the inverter power supply system When there is a power failure in the power grid, the energy concentrated in the drives is converted by the inverter into alternating current with a pure sine voltage of 220 V and a frequency of 50 Hz, which is optimal for power supply of the most demanding electronic devices, home appliances and special equipment. Switching to battery power occurs in automatic mode in 16–20 ms, so that all switched on devices
continue to function normally.
When a mains voltage appears, the charger built into the UPS inverter will automatically begin to recharge the battery. OutBack Power and Victron Energy multifunctional models are able to add power from batteries to mains power, control generator start-up and shutdown, connect in parallel to increase power.
Inverter systems with hybrid inverters OutBack or Victron can use several energy sources at once, of which the basic is the power grid, and the additional one is a generator. It is also possible to connect alternative sources, such as solar panels and wind turbines. In this case, the settings of these inverters allow to ensure the priority use of an alternative source, and the network will automatically be connected only when necessary.
Inverter systems are relevant for use as not only a backup power source, but also for autonomous power supply in a situation if there is no standard connection to the power grid.
The use of UPS inverters in business
Inverters as uninterruptible power supplies (UPS) together with batteries are used for power supply:
restaurants, cafes and hotels;
cinemas and telecentres;
boats and yachts;
mobile complexes with different purposes;