COSUPER Power Inverter

COSUPER Power Inverter

As one of the leading inverter suppliers, Cosuper power electronics inverters wholesale is an electrical appliance that changes the stored direct current in a battery into regular home alternating electricity. The high-frequency power inverter types are compact, and light loses little power while not in use, and has an efficiency of over 90%. Good pure sine wave inverter provides alternating currents without electromagnetic pollution, and digital power inverter is compatible with almost all electronic products, gadgets, and appliances. Widely used in emergency backup power, solar power system, vehicles, boat, camping, etc.


How To Choose A Power Inverter


What is an electrical inverter

A power electronics inverter is a converter that converts DC power (such as batteries, or power batteries) into constant-frequency constant-voltage or frequency-modulated and voltage-regulated AC power, like DC to AC power inverter. An inverter converter is a device composed of an inverter rectifier bridge, control logic, and filter circuit.

Power inverter types

According to the output waveform, it can be roughly divided into a sine wave, modified wave, and square wave.

Pure sine wave

The output waveform of the pure sine wave inverter is almost the same as the waveform of our main power.

The advantage is that the purity of the waveform is higher than that of the mains, and the voltage fluctuation is small, so it is widely used. The EPS emergency power system can be formed in place equipment, satellite communication equipment, military vehicles, medical ambulances, ships, solar energy, and wind power generation. But the price is relatively higher.

Modified Sine Wave

The modified sine wave power inverter adopts the PWM pulse width modulation method to generate the modified wave. This is a popular product whose conversion efficiency and cost performance are better than those of sine waves. Modified Sine Wave inverter is suitable for home appliances, such as TVs, computers, stereos, motors below 1000W, and other resistive loads. And it has a lower price and is the mainstream product in the small power inverter market.

The advantage is that using intelligent circuits and high-power FETs greatly reduces the power loss of the system. The soft start function is added to effectively ensure the reliability of the digital power inverter. If the requirements for the quality of power consumption are not very high, it can meet the needs of most electrical equipment.

But the disadvantage is that there is 20% harmonic distortion, which will cause problems when running precision equipment and will also cause high-frequency interference to communication equipment.

Square wave

The advantages of a square wave inverter are simple circuits, low prices, and easy maintenance. But it will cause noise and higher harmonics. Therefore, its carrying capacity is poor, and it will produce large harmonics for general inductive loads and produce noise to motors and TVs.


How to choose a power inverter

  • Equipment operating environment (temperature and humidity, altitude, the impact of application scenarios on other equipment, etc.);

  • Characteristics of load equipment (rated power, starting power, etc.);

  • DC power system matching with inverter power supply (12V/24/48V/higher voltage level);

  • It depends on local electricity and self-generated electricity;

  • The rated power of the inverter must be greater than the maximum power of the electrical appliance; especially for equipment with large start power requirements, such as motors, air conditioners, etc.

Select the power inverter with rated power according to the load type:

Resistive load

such as incandescent lamps, electric furnaces, heating wires, etc., the inverter can choose 1-1.2 times the load power, thus P inverter = (1-1.2) P load

Inductive load

such as motors, transformers, TVs, etc., the starting impulse power is 3-5 times that of the load itself, and the inverter can choose 3-5 times the load power, that is, P inverter = (3-5) P load

Other factors

inverter working environment temperature, altitude, etc., increase the rated power of the inverter appropriately, such as altitude/1000m, and derate the inverter by about 10%.


How to determine the working time of a power inverter battery?

The inverter battery capacity is rated at ampere-hours (Ah), and the ampere-hour is the maximum discharge capacity of the battery in one hour. For example, a battery is rated at 100AH, which means that it can be discharged within one hour. The maximum continuous output current is 100A. Therefore, we can use this value to calculate the time that the load can be used.

For example 4 pcs 12V 14Ah batteries, calculate the use time of 300W bulbs

Battery working time = battery voltage * battery capacity/load power * inverter efficiency

12*(14*4)/300*80% (inverter efficiency)=2.5h

Car Power Inverter Buying Guide

With more and more people enjoying outdoor self-driving trip nowadays, we can see an increasing demand for mobile vehicles. In such a case, a portable power inverter for car will always come in handy. In this article, we’ll show you this compact but sometimes very necessary device, and recommendations that you should buy car inverter.

A car power inverter is a device that allows you to use electrical appliances and devices in your car, such as laptops, TVs, and other electronics. When buying a car power inverter, there are a few important factors to consider.

First, you need to decide on the wattage you need. This will depend on the type of devices you plan to use with the inverter. Make sure to choose an inverter with sufficient wattage to power your devices.

Second, consider the types of power inverters you need. There are two types: pure sine wave and modified sine wave. Pure sine wave inverters are more expensive but provide a cleaner, more stable power output. Modified sine wave inverters are more affordable but may produce some electrical noise that could affect certain devices.

Lastly, consider how to choose the right size power inverter and power inverter function like portability. If you plan to use it on the go, make sure it's compact and easy to transport.

Car Power Inverter Buying Guide

How To Use A Power Inverter?

How to Use a Power Inverter

Power electronics inverters are the most common electrical devices which can be seen in many inverter applications. Improper operation can easily cause fire and damage the device. In this case, it is very important to know the power inverter uses after owning the inverter. Below are a few guidelines that users should be aware of before operating a power inverter.

1. Each digital power inverter has an input DC voltage, such as 12V, 24V, etc. It is required that the selected battery voltage must be consistent with the DC input voltage of the inverter. For example, a 12V inverter must select a 12V battery.

2. The output power of the inverter must be greater than the power used by the electrical appliances, especially for electrical appliances with high power at startup, such as refrigerators and air conditioners, a larger margin should be left.

3. Positive and negative poles must be connected correctly—the DC voltage connected to the inverter is marked with positive and negative poles. Red is positive (+), black is negative (-), the battery is also marked with positive and negative, red is positive (+), black is negative (-), must be connected to positive (red to red), negative Negative (black to black). The diameter of the connecting wire must be thick enough, and the length of the connecting wire should be minimized.

4. It should be placed in a ventilated and dry place and keep a distance of more than 500px from surrounding objects. Keep away from flammable and explosive materials, and do not place or cover other items on the device. The ambient temperature should not exceed or fall below its allowable working temperature.

5. Charging and Inversion cannot be performed at the same time. That is, the charging plug cannot be inserted into the electrical circuit of the inverter output during the inverter.

6. Hooking up—When connecting the inverter to the battery always use an overcurrent protection device, such as a fuse or circuit breaker, and use the thickest wire available, in the shortest length practical.

7. The interval between two startups is not less than 5 seconds (cut off the input power).

8. Please wipe with dry cloth or anti-static cloth to keep the machine clean and tidy.

9. Before connecting the input and output of the machine, please ground the machine accordingly.

10. In order to avoid accidents, it is strictly forbidden for users to open the case for operation and use.

11. When connecting the battery, make sure that there are no other metal objects on your hands, so as to avoid short circuits of the battery and burning the human body.

Power Inverter wholesale FAQs


Types of Power Inverters?


There are two main types of power inverters: pure sine wave dc to ac inverters and modified sine wave power inverters. Pure sine wave inverters produce a clean, stable power output and are ideal for sensitive electronic devices. Modified sine wave inverters are more affordable but may produce electrical noise that could affect some devices.


Why does the electrical inverter turn itself off?


If the electric power inverter's audible alarm sounds and a fault L.E.D illuminates, this indicates that there is a fault or error, and the inverter may turn off. Most commonly this would be caused by an appliance that is drawing too much power (overloading), low battery voltage, or voltage drop due to insufficient size cables or poor connections.


Why the electrical inverter will not run my appliance even though the appliance draws less power (Watts) than the size of the inverter?


Electrical appliances can be divided into three groups by the way they draw energy (current) from their power supply. These groups are "Resistive", "Inductive" and "Capacitive" appliances or also called "loads". Some appliances may draw all three types of power.

Resistive Loads such as normal incandescent lights (wire filament) always draw a constant power (watts) from the power supply, that is a 100 Watt light will draw approximately 100 Watts from the power supply at all times. Resistive loads are the easiest appliances for an inverter to run.

Inductive Loads such as a refrigerator (Electric Motor) require a large rush of power (surge current) to start and then usually draw a more constant power once running. Inductive loads contain coils of wire (motors, transformers, ballasts, solenoids). When the power is first turned on, these coils of wire draw a large surge current which forms the magnetic flux (magnetic field) which allows these appliances to work. This magnetic flux is a kind of stored energy.

The most common inductive appliances are fridges, air compressors, transformers/ chargers, pumps, power tools, and fluorescent lights. These appliances may draw up to 10 times their normal running power to start up; that is to run an 80W fridge you may need a 600 or 1000 Watt inverter.

Capacitive Loads such as many TVs or many electronic appliances require a large surge current to start only when they have not been used for a while. This is often due to large capacitors in the power supply that must be quickly charged when the appliance is turned on. If the appliance is not used for a few days these capacitors slowly go flat. Resetting the inverter a couple of times may allow these appliances to work.


What is a power inverter used for?


A power inverter for sale is used to convert DC (direct current) power from a battery or solar panel into AC (alternating current) power that can be used to power electronic devices and appliances that require AC power, such as laptops, TVs, and other household appliances.


How does a power inverter work


A electricity inverter works by converting DC (direct current) power from a battery or other power source into AC (alternating current) power, which is what most household appliances and electronics use. This allows you to power your devices on the go, using your car or other battery-powered devices as the power source.

What Are Power Inverters Used For?

Cool Life, Super Power.
Contact Professional Power Inverter Company
Melisa Yuan Sales:
Suzhou Cosuper Energy Technology Co., Ltd.
Building 18th, No.99 Gangtian Road, SIP, Suzhou City, Jiangsu Province, 215121, China
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