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Where is the post erection of supercapacitors published now?

by:GREEN TECH     2021-04-06


Supercapacitors have the characteristics of high output power density, long life, good safety, and strong environmental adaptability. They can meet the requirements of high-power power supplies for drones and other ejection devices. Professionals at the conference expressed a high degree of interest in this . This is another emerging application field that supercapacitors have emerged after their mature applications in new energy vehicles, wind turbine pitching, and smart microgrids.

With the increasing maturity of system solutions, the characteristic energy storage effect of super capacitors is evident. Because supercapacitors have the characteristics of high output power density, long life, good safety, and strong environmental adaptability, they can meet the requirements of high-power power supplies for drones and other ejection devices. Professionals at the conference expressed a high degree of interest in this.

This is another emerging application field that supercapacitors have emerged after their mature applications in new energy vehicles, wind turbine pitch, and smart microgrids. This is not so much a breakthrough in the application of supercapacitors with the help of drones, but rather a key signal for the continuous development of supercapacitors and the release of potential energy.

From the same 'wind': two places take advantage of the momentum to soar

Today, when many industries are 'waiting for the windThe audible 'wind' is at the pitch of the wind turbine, and the invisible 'energy' is at the grid-connected wind power.

As the backup power supply of the wind turbine pitch control system, the super capacitor improves the reliability, safety and maintenance-free performance of the pitch power supply. At the beginning of this month, the National Energy Administration issued a notice stating that a number of wind power industry standards need to be formulated (revised), and the technical specifications for supercapacitors for the pitch system of wind turbines are among them.

The main technical content of the specification includes: use environmental conditions, modeling design, technical requirements, test specifications, packaging, transportation and storage. The standard is planned to be completed in 2018 and will promote the market for supercapacitors in the field of wind turbine pitch to become bigger and stronger.

Due to the uncertainty and dispersion of wind power generation, there are some problems in the absorption and grid connection. Super capacitors can play an effective role in energy storage and power compensation. Kilowatt-megawatt supercapacitor energy storage units are used in the composite energy storage system of wind power microgrids, which can provide short-term power compensation up to megawatts and improve the power quality of the microgrid.

Compared with traditional power grids, the scale of wind power grids is small, the system inertia is not large, and the network and load often fluctuate, which has a serious impact on the stable operation of the grid. The super capacitor energy storage system can effectively solve this problem. It can store excess electric energy when the load is low, and feed it back to the microgrid to adjust the power demand when the load is peak.

In the specific application process, the super capacitor energy storage system is connected in parallel to the bus or feeder in the microgrid. During the charging and discharging process of the super capacitor, the terminal voltage range changes greatly, and usually a DC/DC converter must be used as an interface circuit to adjust Energy storage and discharge of supercapacitors.

Run with 'cars': great potential in the post-cheat era

New energy vehicles are undoubtedly the first large-scale application of supercapacitors. The braking energy recovery system composed of super capacitor modules absorbs and stores almost all braking kinetic energy when the passenger car is braking, and releases this energy when the passenger car starts or accelerates. In the working conditions of frequent start and stop of urban buses and congestion, it greatly saves fuel consumption and reduces emissions. It's just that such a strong technical advantage has fallen a bit in the face of Xinyuan Automobile's fraudulent replenishment incident.

The fraud investigation opened at the end of 2015 has become the sword of Damocles hanging over the head of car companies. Taking into account the many uncertain factors in the survey results, car companies have generally slowed down the pace of the new energy sector this year, which directly led to fewer orders for super capacitor companies than in the same period in previous years.

Aside from the industrial policy, the market is paying a lot of attention to the application of supercapacitors in new energy buses. In the early stage of the rise of new energy vehicles, Yutong Bus has jumped out of the technical route of charging (fast charging, slow charging) or battery swap to develop new energy buses. It has adopted relatively mature technology and high-safety super capacitors to solve the problem. The battery system has problems such as high cost, short life, frequent replacement, etc. The cycle life is as long as 1 million times, and the aging time is more than 8 years, realizing the same life of the battery and the entire vehicle.

According to the operating data in several cities, the fuel saving effect of vehicles reaches 30%.

New 'rail' construction: the application of energy storage is prospering in the early days

The emerging application of supercapacitors in recent years is the rail transit market. In urban rail systems, supercapacitors have both braking energy recovery and voltage stabilization functions: the energy is stored when a train is braking, and then released when the vehicle accelerates, reducing energy consumption in the form of heat release. Above the moving resistance.

When multiple vehicles accelerate at the same time, the system voltage will be greatly reduced, resulting in frequent low-voltage fluctuations of the vehicle. The super capacitor energy storage system can discharge when the voltage drops to the specified limit value to increase the system voltage to ensure the vehicle Continuous and stable voltage during operation.

In the early stage of the construction of rail transit, super capacitors also have related applications. For example, the construction of the first phase of the Changzhou Rail Transit Line 1 project started, and the construction scene of the super capacitor variable frequency locomotive is eye-catching. After exclaiming, people found that the application of supercapacitors in the field of construction machinery should not be underestimated.

Out of the public eye, super capacitor companies are also conducting innovative research on materials and structures to expand industrial applications. 

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