Power Inverter Price List
-Tuesday, March 23, 2021
Different voltage power inverter have different prices. Power inverter is a device that can convert DC (the battery and accumulator jar) into AC (normally the sinusoidal wave of 220V and 50Hz). It is composed of inverter bridge, control logic and filter circuit. With a power inverter, direct current (battery, switching power supply, fuel cell, etc.) can be converted into alternating current to provide stable and reliable power protection for electrical appliances, such as laptops, mobile phones, handheld PCs, digital cameras, and various instruments. Inverters can also be used with generators, which can effectively save fuel and reduce noise. The power inverter has a wide range of uses. It can be used in various vehicles, such as automobiles, ships and aircraft.
Inverter is commonly used in the industrial field and its main function is to convert the current in a certain way. Transformer is a device that can change the AC voltage based on the electromagnetic induction principle. It is mainly composed of primary coil, secondary coil and iron core (magnetic core). To make it easier to understand the inverter, hereby the difference between inverter and transformer will be discussed.
Power inverter has many specifications, and these specifications usually include rated power and peak power. The rated power is the continuous output power, which refers to the power that the inverter keeps working for a long time. The peak power is the starting power, which is generally twice the rated power. It is mainly used to meet the instantaneous peak value when individual home electrical appliances are started. For example, for a power inverter with 2000 watts continuous power, its peak power can reach 4000 watts. Therefore, for an inverter, its peak power must be able to meet the instantaneous power when the home appliance starts to ensure normal operation. When selecting an inverter, its power should be higher than the starting power of the home electrical appliances used. When working, the inverter itself consumes part of the power. Its input power is greater than its output power. For example, if an inverter inputs 100 watts of direct current and outputs 85 watts of alternating current, its efficiency is 85%.
What is the difference between power inverter and frequency inverter? The detail analysis of inverter and frequency inverter is as following.
What is a power inverter?
Power inverter is a device that can convert DC (the battery and accumulator jar) into AC (normally the sinusoidal wave of 220V and 50Hz). It is composed of inverter bridge, control logic and filter circuit. In fact, it is a voltage inversion process with the adapter. The adapter converts the AC voltage of the mains power grid into a stable 12V DC output, while Inverter converts the 12V DC voltage output by the Adapter into high-frequency high-voltage AC. Now, the inverters generally use PWM pulse width modulation technology to obtain high-power, high-efficiency AC inverter output.
This inverter efficiency value depends on inverter load power capacity variation, as the efficiency increases and may reach to its max value at higher load power capacity in compare to lower loading power capacity, and in condition that not going above inverter output power capacity limit. Generally, below 15% inverter loading, the efficiency will be quite low. Consequently, good matching between inverter capacity and its load capacity will enable us harvest larger efficiency, which means larger inverter ac output power for the same dc input power.
What is the power inverter typical inputs?
Of course, it is DC supply voltage, but with different values, it may be small like 12V DC, 24V DC, 48V DC, or medium like 200V DC, 450V or high like hundreds of thousands of voltages. In all cases the DC supply must be stable and capable of supplying requested power demand to the AC load in addition to some very small power loss (inefficacies).
The car inverter is a small device that can convert 12V or 24V DC power into 110V or 220V AC power. The 12V/24V DC power is from the car battery. Though a car inverter, the car power will be converted to AC power and powered for household appliances.
The power of a general laptop is about 60W ~ 70W. So for common user, buying a 150W continues power car inverter is completely enough. Because most family cars have the power of 12VDC and ＜20A current, that is to say, it allows the maximum of about 230 watts appliances. And even some older cars only allow current of 10A. So we cannot blindly seek high power car inverter. Currently connect 12V inverter with power 150W or less to car for electrical appliances use is the best choice.
Power Inverter FAQ
-Wednesday, January 29, 2020
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?
-Tuesday, January 28, 2020
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 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.
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
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.
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.
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.
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, ...
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.
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.
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.
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.
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.