5 advantages of super capacitors

The super capacitor is a new type of energy storage device, which has characteristics such as high power density, short charging time, long service life, good temperature characteristics, energy saving, and environmental protection. What are the advantages of super capacitors? The following small series will introduce the five major advantages of super capacitors in detail, hoping to help everyone.

There are two types of energy storage systems for fan-powered electric pitch systems: one uses a super capacitor and the other uses a battery. Batteries are an effective energy storage device for many applications. Pitch systems have also widely used batteries as energy storage devices. However, after the super capacitor appeared and began to be applied to fan pitch, its unique advantages were fully reflected.

The pitch system continuously adjusts the blade pitch to match the fan's operating principle. This not only ensures that the fan maintains a constant power output, avoids blade fracture due to excessive mechanical pressure, but also reduces mechanical stress on the turbine structure, thereby extending its service life.

As we all know, in the process of fan operation, if the grid fails, the fan needs to start the emergency backup system. The backup system is a kind of energy storage system, which can provide enough electric energy to allow the fan blades to return to the neutral position, achieve a safe shutdown, and avoid serious damage to the fan due to excessive wind or uneven even completely scrapped.

According to reports, the fan pitch system uses a super capacitor as an energy storage system, which has five major advantages over the battery:

One is high power density = instantaneous release of high power. Unlike batteries, supercapacitors can instantaneously release high power, ensuring that blades can quickly return to a neutral position in the event of a grid failure. Since supercapacitors charge much faster than batteries, supercapacitors also provide high reliability in the event of short-term mismatches in power demand and power supply capabilities.

The second is to reduce the total cost of acquisition. The initial investment cost of an electric pitch system with a super capacitor is the same as that of a battery system, but a battery-powered electric pitch system (without energy storage devices) requires a more complicated charging and monitoring system, which leads to a higher cost. Systems using ultracapacitors require fewer components, and mechanisms such as mechanical mounting and vibration reduction are simpler than battery systems.

Third, long service life and predictable aging cycles. The average lifetime of a supercapacitor under normal operating conditions is 12 years. This is mainly due to two things: First, the supercapacitor can work in a wide temperature range of -40°C to 65°C; and second, it can reliably run 500,000 to 1 million times. Cycle charge and discharge. Unlike ultracapacitors, batteries have a narrow operating temperature range, harsh environmental conditions, and continuous charging and discharging can cause batteries to suffer severe damage. Every two to four years require battery replacement.

Fourth, there is no heating and cooling costs. The battery is susceptible to extreme temperatures, and supercapacitors do not matter. The battery needs to heat the refrigeration system. Therefore, the design cost of using a battery system will inevitably be higher, and supercapacitors do not require this extra high maintenance cost.

The fifth is light weight. Battery energy storage systems often have to use very large designs to meet peak power requirements, and battery-based systems are relatively large and cumbersome. The supercapacitor is significantly lighter, because the supercapacitor itself can instantaneously release high power, fully meeting the peak power requirements, and therefore does not require an oversized design.

In the long term, batteries can have high maintenance and replacement costs, and supercapacitors can avoid this cost. Fan pitch system uses super capacitors as energy storage equipment, which can save a lot of manpower, material resources, and cost-effectiveness.