power inverter

Power Inverter FAQ
1. Power inverter how it works? Power inverter is a device that can directly convert DC power to AC power. It can be used for car/RV/truck/house. The DC power is from the car battery or home battery. The AC power converted by power inverter can be directly used for charging the phone/laptop/iPad or powering electric fan/refrigerator in the car. 2. How to calculate the power of power inverter according to my car battery? If the specification of the battery is DC 12 volt/ 120 Ah, the output power of the battery is: 12v * 120 Ah = 1440 watts. That means, the battery can provide a maximum power of 1440 watts for a power inverter. So the power selection of power inverter should be lower than 1440W. The 1000W 12V DC to 110V AC power inverter is a good choice.
What is PWM Power Inverter?
Simply put, the power inverter is a kind of electronic device converting low-voltage (12/24/48 volts) DC into 110V/ 120V/ 220V/ 240V AC power. It is named so because we usually transform AC into DC, but the role of inverter does the opposite. The power inverter mainly adopts the PWM (Pulse Width Modulation) control technology, which can suppress or eliminate low-order harmonics. Coupled with the use of self-shutdown devices, the switching frequency is greatly increased, and the output waveform can be very close to a sine wave.
Power Inverter vs. Converter
Power inverters and converters are both electrical devices to play a role of electrical power conversion in our life. The power inverter is actually to convert direct current (DC) into alternating current (AC). The converter is a process of changing an electrical power source to another required one, such as a voltage converter. Both are frequently applied to the circuit elements in the circuit, but there are still some similarities and differences between the power inverter and the converter.
10 Tips for Using a Power Inverter Correctly
Power inverter that converts DC power to AC power provides a great convenience people's lives, especially in home appliances, such as air conditioner, refrigerator, TV, VCR, etc. In order to optimize the use of the inverters in these home appliances, people should pay much attention to proper operation of power inverters. This article will give you some tips how to use the power inverter properly. 1. The DC input voltage of the inverter should be the same as the battery voltage. 2. Power inverter output power must be greater than the power of home appliances ...
The Core Component of Power Inverter - IGBT
IGBT is a kind of power device, which assumes the function of power conversion and energy transmission in the power inverter. It is the heart of the inverter. At the same time, IGBT is also one of the most unreliable components in the power inverter. It is very sensitive to the temperature, voltage and current of the device. In case of even a slight stand exceeding, it becomes incompetent and cannot be repaired. IGBT damage means the inverter must be replaced or overhauled. Therefore, IGBT is the key protection object of the power inverter.
What Size of an Inverter Do I Need for my RV?
Is an inverter necessary for the RV or how to choose the right one. As a matter of fact, it depends on our electricity demand. The 12V battery of the RV can only enable electrical appliances with low power to work normally, such as 12V refrigerator and LED light, ventilation fan or small TV. If you want to use a high-powered electric appliance such as a rice cooker, a microwave oven, an electric kettle, or an induction cooker, you need a power inverter.
When to Fuse, When not to Fuse for Solar System?
For the current string power inverters, different manufacturers have different technical routes. Single-phase inverters of below 6 kW and three-phase inverters of below 10 kW generally use two MPPT loops. Each MPPT loop is equipped with one string. For the small industrial and commercial projects, power inverters of 20kW to 40kW are usually used. The number of MPPTs ranges from 2 to 4, and each MPPT loop is equipped with 2 to 4 strings. As to the large-scale power stations, high-power string inverters of 60kW to 80kW are generally selected. The number of MPPTs ranges from 1 to 6, and each MPPT loop is matched with 2 to 12 strings.
PV Off-Grid Solar System Troubleshooting
The photovoltaic off-grid power generation system is mainly used to solve the basic electricity consumption problem for residents in areas without electricity or insufficient electricity. The photovoltaic off-grid power generation system is mainly constituted by the photovoltaic component, bracket, controller, power inverter, storage battery and power distribution system. Compared with the photovoltaic grid-connected system, the off-grid system has an additional controller and storage battery. In addition, the inverter directly drives the load, so the electrical system is more complicated. Since the off-grid system may be the only power source of the user and the user relies more on the system, the off-grid solar system design and operation must be more reliable.
How Does Input Voltage Affect a Grid-Tie Inverter?
In the photovoltaic grid-tie inverter, there are many input voltage technical parameters: Maximum DC input voltage, MPPT operating voltage range, full-load voltage range, start-up voltage, rated input voltage and so on. These parameters have their own focus and all of them are useful.
Differences between Central Inverter and String Inverter
Central inverter: The power is between 100kW and 2500kW. With the development of power electronics technology, the string inverter is having an increasingly bigger market, and the central inverters below 500KW have already basically been eliminated from the market. The power device adopts high-current IGBT. The system topology adopts DC-AC first-level power electronic device to transform the full-bridge inverter. The latter stage is generally connected to the double-split power-frequency boost isolation transformer. The protection level is generally IP20. It has a large size and is vertically installed indoor.
How to Troubleshoot the Wrong Wired On Grid Inverter?
As to the photovoltaic grid-tie inverter, the input end is connected to the photovoltaic component and the output end is connected to the power grid. The component has only positive and negative poles, and it is not easy to wire incorrectly. Since the component is a certain distance away from the inverter, it is required to add an extension cable. The correct connection method is that the photovoltaic connector has a female connector on one side and a male connector on the other side, so that the positive and negative directions will not change. However, some green hands will also make the two connectors of the extension cable the same. If the power inverter is connected, the positive and negative poles will be reversed.

PV system testing

How to Select an Inverter for PV Off Grid System?
In the photovoltaic off-grid system, the power parameter of the power inverter selecting is generally confirmed according to the load type and power of the user. The load is classified into the following types according to the impedance property: Resistive load, inductive load, and capacitive load. The load is classified into the following types according to the impedance property: Resistive load, inductive load, and capacitive load. The resistive load: The load with no phase difference between current and voltage is a resistive load, such as the electric cooker, bulb, electric furnace, electric soldering iron and so on.
How to Improve Efficiency of Power Inverters?
The efficiency of the power inverter is directly related to the generated energy of the system, so it is an important indicator that customers care much about. It is of great importance to increase the conversion efficiency of the power inverter. The only way to improve the efficiency of power inverters is to reduce the losses. The main losses of inverters come from IGBT, MOSFET and other power switch tubes, as well as magnetic devices such as transformers and inductors, which is related to the current, voltage and the process adopted by the selected materials.
Pure Sine Wave vs. Modified Sine Wave Inverters
Pure sine wave inverters output the true sine wave AC power which is the same as or even better than the power grid we use every day since there is no electromagnetic pollution. Pure sine wave inverters, with high efficiency, stable sine wave output and high frequency technology, are suitable for all kinds of loads, which can not only power any common electrical equipment (including phone, heater, etc.), but also run the sensitive electronics or appliances (like microwave, fridge, etc.).
How to Make a Simple Power Inverter?
Today we'll introduce how to make a power inverter. This homemade inverter has simple circuit, low cost, easy maintain, and high efficiency. And it can be made by anyone who has a little practical ability. Although this DIY inverter does not have the same high-end and complex switching power supply integrated circuit as high-quality power inverters on the market, as well as field effect power amplification, its effectiveness is not inferior to others.
How Does an Inverter Work?
In our daily life, most electronic products are used through 110V or 220V AC by switching power supply or some other rectifier circuit to convert AC to DC, and the so-called inversion is the process of converting DC to AC, which is a reverse process of rectifier conversion, so the inverter is named after this. Inverters bring us a lot of convenience in our life, such as outdoor barbecue, outdoor lighting, car refrigerators, etc., which are all used by converting DC power in storage batteries into AC power through inverters. Let's learn about the basic working principle of power inverter.
What is an inverter?
An inverter or power inverter, refers to an electronic device that converts direct current (DC) into alternating current (AC). In our daily life, we often convert 110V or 220V AC power into DC power for use, while the inverter plays the opposite role. In other words, the inverter is used to convert the 12V, 24V or 48V DC power via car battery or battery bank to AC 110V, 120V, 220V, 230V, or 240V AC power. The power inverter can provide AC household power on the move, ideal for charging the electronics or appliances such as mobile phones, iPad, computers, TV, washing machines, rice cookers, refrigerators, video recorders, fans, lighting, air conditioning, electric grinding wheel, electric tools, etc. Therefore, the inverter is a must-have when you are working outside, traveling, camping or encountering emergency power failure.