In simple terms, an inverter is a device or electronic
circuit that functions to convert or convert a direct current (DC) into an
alternating voltage (AC) so that the inverter works is the opposite of a power
supply converter such as a handphone charger, a simple power supply, a charger
mini drill etc. which are included in the type of adapter.
Generally the power inverter is often recognized on UPS or Uninterruptible Power Supply or on the latest AC, namely AC Inverter, from the type of inverter there is another classification of distribution of output such as 1 phase, or 3 phase.
Then what’s the
difference between 1 phase with 3 phases?
1 phase has a voltage of 220 volts, while the three phases have a voltage of 380 volts. Three phases are commonly used for electricity with large electric power, which is to divide into 3 electric currents with 220 volts each. The three electricity lines use 4 cables which are usually coded R-S-T and 0 (neutral).
3 phases are used at least for electricity above 6,600 Watts. The easiest way to detect the electrical phase of your home is to look at your home or office electricity meter? If electricity from PLN consists of 2 cables, it is definitely one phase, if 4 cables and has a fuse 3 means three phases. Easy isn’t it?
At present there are many types of inverters in the form of circuits or assemblies that have already been installed. Only connect to a DC battery which usually ranges from 12 VDC – 24 VDC so we can get 220 Volt AC although there is no PLN grid at all, here for example a 1000 watt inverter
The main function of the inverter is as a voltage converter from direct current, for example from a battery to alternating current like a PLN grid. The most widely seen example is the use of a UPS that functions as a backup power supply on a computer unit so that it does not directly die when electricity occurs suddenly dies or the voltage of the PLN goes down.
But now the use of inverters is wider even in the industrial world and is often used also on devices that require high precision power and can be changed linearly. Lately, AC is quite popular by using inverter technology, which of course has many advantages compared to AC with conventional motor voltages.
How the Inverter works
To understand how the basic principle of an inverter works produces AC electricity.
If we have a battery / battery which one of the poles is connected to a transformer at the foot of CT (center tap) and quickly and continuously the switch as in the image is moved position then on the transformer secondary coil, an electric current will emerge in the form of AC. In theory, the secondary voltage can be regulated in such a way just by increasing the number of coil transformers that will multiply the voltage produced.
This can happen because there is an induction produced from the battery. Then how can we produce an effect like this switch that is moved back and forth?
The trick is to use a circuit / astable multivibrator circuit (unstable multivibrator) of a pair of transistors, or better yet by using a MOSFET which is certainly more efficient in terms of power, the illustration is below this unstable multivibrator is described as an oscillator and passed to the power amplifier .
Then how do inverter
work on AC?
As we know that the compressor motor in the air conditioner that serves to drain freon gas / refrigerant works depends on the temperature of the room where the indoor air conditioner is installed. If indeed the temperature is detected high then the control circuit will order to turn on the capacitor start motor and the compressor will be ON with the maximum speed until the desired temperature is reached
The disadvantage is that the compressor motor works fully even though the actual room is still quite cold, as long as there is a signal to turn on the compressor, the compressor motor will return to work at full speed.
Comparison of AC inverters and Non Inverters
Remember that the more often the AC start compressor motor stops, the greater the shock voltage produced so that the electricity consumption can be very large. Just imagine the power needed to rotate a compressor motor can be up to thousands of watts and will continue to occur every cycle of the compressor on
This is where the advantages of inverter systems on air conditioners, by using an inverter system so that the motor speed can be adjusted so that the compressor does not need to work full time because it is possible to control the amount of frequency that enters the AC compressor, in other words the cold temperature has been reached and will keep the temperature stable so electricity savings can be achieved.
Here are some Advantages Inverter Generator:
More efficient electricity AC becomes faster cold The compressor motor sound is quieter because it does not work fully There is no shock voltage from the compressor
Type of inverter
What needs to be known further is the type of inverter which is generally divided into 3 based on the type of wave produced
1. Square Sine Wave Inverter
In this type the signal produced by the inverter has a box signal output form as the name implies and is very unsuitable for use with a coil such as a refrigerator, or a certain transformer because it can damage the equipment.
2. Modified Sine Wave Inverter
Basically this type of inverter is a modification of a square sine wave inverter, this inverter device can be used in loads with coils but the results are not optimal with large power losses so it is still not recommended for use in sensitive equipment such as home theater or other audio equipment.
3. Pure Sine Wave Inverter
This type is the best output inverter because the form of the signal is pure like PLN so that it can be used for all electrical devices, but the disadvantage is that this type of inverter is very expensive
4. Car / Portable
When in a car, we want to use AC voltage for purposes such as cellphone, laptop, etc., then the inverter car is needed. The disadvantages of this car inverter are usually the output capacity is small, not more than 200W, considering that one power is taken from a car battery which when the power is taken together with the power taken for the operational needs of the car, the car battery will be quickly damaged. And also this inverter is usually only squre wave or modified square wave, there is no pure sine wave.
5. Solar Inverter
Solar Inverter is used to convert DC voltage from solar panels or batteries / batteries to AC voltage. Some Solar Inverters are also equipped with a battery charger, for all charging the battery. Technology for charging batteries in the inverter, on average, is included in the MPPT category.
6. “Interruptible Power Supply” UPS
This UPS is a combination of rectifiers and inverters and stabilizers. Rectifier is a device that converts AC voltage to DC and the inverter is a device that converts DC voltage to AC. Rectifiers are useful for charging voltage to batteries, while Inverters are useful to discharge battery voltage to PLN voltage. While the stabilizer is useful for stabilizing the voltage at the rectifier, so that the battery can contain at the optimum voltage.
7. Variable Speed Drive
Variable Speed Drive is also a combination of rectifiers and inverters, but not equipped with batteries. The purpose of converting AC to DC voltage is to do digitizing of DC voltage waves, so that frequency can be adjusted and after it is set, the conversion is done again into AC voltage to drive induction type electrical devices, such as electric motors, etc. With the change in frequency, the rotational speed of the electric motor rotor can change with a straight comparison.
The Pros and Cons of inverter Generators
Generators ar having an instant. Specifically, moveable gas generators ar undergoing a technological makeover that dramatically boosts their level of performance. thus if you are looking into obtaining one, you will need to think about AN electrical converter generator. they are available at a premium—and conjointly with nice blessings.
An inverter generator electronically throttles the engine up and right down to meet demand, rather than running full tilt all the time. The ensuing improvement in potency means, for the same size gasoline tank, you will not got to fill it up as usually. AN inverter generator produces lower emissions, and it’s terribly quiet.
“You will persevere a conversation next to AN electrical converter generator,” says Dave Trezza, who oversees CR’s generator testing.
All of that explains why numerous new models ar shooting up reception centers and on-line.
How is the quality of
inverters like many in the market?
It cannot be denied that generators and inverters are indeed circulating in the market, some offer at very cheap prices. The quality of the inverter at a price below the average can be said to be minimal. Quality control of inverters is often lacking and often makes customers have to accept generator sets as they are. The lack of this model inverter can be seen directly physically from the quality of the material or finishing that is less neat which can usually also be heard when the engine is on. The vibration is quite fast and the sound is less smooth.
Another thing that should also get attention in choosing a good inverter is after-sales network – after sales service. Guaranteed availability of spare parts must also be your calculation in choosing the best inverter. It’s useless if it’s cheap but it’s only used for a short period of time because spare parts aren’t available when your inverter is damaged.
CV.2PMS also has an inverter, but we are very concerned about the quality of the inverter. The right way to choose an inverter with good quality will also be very beneficial for you as a consumer or user
A New class of Generator
To help you create higher sense of your choices, Cr has revamped the classes for generator ratings, adding a replacement one for inverter generators. we have a tendency to break them up into 3 groups:
With only a few exceptions, the massive electrical converter generators in our ratings weigh around 250 pounds or additional (wheels included). that is too massive to haul on to a tailgate, and simply large enough to power your house: They generate five,000 watts of power or additional (at 220 volts). This class of inverter generator are often connected on to your electrical panel with a security device referred to as a transfer switch, that Cr powerfully recommends.
These weigh eighty pounds or additional, and should or might not go together with wheels. They turn out a pair of,500 to 4,500 watts however do not permit the suggested choice of connecting to your electrical panel with a transfer switch. Instead, you plug appliances or natural philosophy directly into the generator.
These weigh fifty to sixty pounds, and ar designed to be carried with one hand. Most recreational models reach at around a pair of,000 watts, that ought to be lots for tailgating or inhabitation. do not let the scale lull you into a false sense of security, though: They still emit carbon monoxide, which might kill you at high enough concentrations, and will ne’er be operated within an inside area.
Other inverter maintenance is also needed if your inverter uses electric starters in addition to a starter pedal or recoil. electric starter inverters need an inverted inverter for a certain period of time, ie once a week. The point for charging an inverter battery that can run out if it’s not used for a long time.