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How does solar pure sine wave inverter work?

Solar Pure Sine Wave Inverter

 

1. Home backup system:

When AC grid power is available, inverter charges battery, at the same time, AC grid power bypass through inverter to household appliances, such as refrigerator, TV. When AC grid power is off, it will automatic transfer switch to battery power and convert DC to AC power.
 
2. Wind or Solar Power system:
Convert DC to AC power. When battery power is lacking, it will automatic transfer to grid power for powering continuously.
 
Solar energy has emerged as a sustainable and environmentally friendly alternative to traditional power sources. To harness the maximum potential of solar power, an essential component is a solar pure sine wave inverter. But how does it work?
 
solar pure sine wave inverter is a device that converts the direct current (DC) produced by solar panels into alternating current (AC) compatible with household appliances. Unlike modified sine wave inverters, which produce a choppy and less efficient AC output, pure sine wave inverters generate a smooth and clean electrical signal that mimics the utility grid power.
 
The secret behind the smooth output lies in the internal circuitry of the inverter. The DC power from the solar panels enters the inverter, where it undergoes a two-step process. First, the DC power is transformed into a high-frequency AC signal using power transistors. Next, this high-frequency AC is converted into a pure sine wave using filtering and modulation techniques.
 
This pure sine wave output ensures that sensitive electronic devices, such as laptops, televisions, and medical equipment, run smoothly without any interference or damage. It also maximizes the efficiency of appliances, reducing energy waste.
 
Solar pure sine wave inverters come in various sizes and capacities to cater to different energy demands. Some advanced models also include features like built-in MPPT (Maximum Power Point Tracking) charge controllers, allowing for optimal solar power utilization.
 
With their reliable and efficient performance, solar pure sine wave inverters have become an essential component of residential and commercial solar power systems. They enable users to make the most of their solar energy investments, ensuring a seamless and uninterrupted power supply.
 
Investing in a solar pure sine wave inverter is not only an eco-friendly choice but also a smart financial decision in the long run. It not only reduces reliance on conventional power sources but also saves money by harnessing the abundant and free energy from the sun.
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Photovoltaic Energy Storage for Anti-Backflow Project Investment Analysis

With increasing in the capacity of solar photovoltaic power plants,  there are newly installed photovoltaics not allowed to be sent to the grid in many palce due to consumption reasons. When the photovoltaic power is greater than the load power, the more part can only be wasted, which will reduce the income of the power station. If the time is longer and the wasted power is greater, there may be no investment value. it is necessary to Installing anti-backflow and solar energy storage devices can reduce the power loss of anti-backflow, and can be used as a backup power supply for the load, which is more economical than a simple grid-connected anti-backflow system.


The solar backflow prevention device is to install a current sensor at the grid connection point. When it detects that there is current flowing to the grid, the photovoltaic output power remains unchanged, and the bidirectional converter is activated to store the excess electrical energy in the battery. Wait for the photovoltaic power to decrease or Release when the load power increases. From the cost point of view, to install a set of anti-backflow system, it is necessary to add energy storage equipment, including energy storage converters and batteries. The price is about $320/kWh, and the cost is about $0.078 per kWh. The cost is still relatively high. , So when designing an energy storage system, pay attention to the following three points:

 

Firstly is to track the photovoltaic power generation curve, the load’s power curve, and calculate the energy storage configuration; the second is to select the technical solution of energy storage. From the cost point of view, the AC coupling design is flexible and more suitable for anti-backflow energy storage; the third is to Choose the anti-backflow detection point to install the current sensor. If the selection is improper, a lot of power may be wasted.

 

In a small solar home system below 30kW, if the proportion of photovoltaic self-use is more than 80%, the excess electricity is not too much, the total daily kWh is below 15 degrees, or the daily electricity bill is below $3; the electricity price is less than $0.078, which is close to the installation of energy storage. Electricity cost, it is recommended to configure an anti-reverse flow device, which is low cost, safe and reliable; if the excess photovoltaic capacity is greater than 20%, or the excess photovoltaic power is greater than 30kW, the daily electricity exceeds 100 kWh, and the electricity price is higher than 0.5 yuan, it is recommended to configure storage can.

 

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