The core of energy storage system is the storage and release of electricity energy. The conversion efficiency of charge and discharge will affect the energy utilization rate of energy storage system.
The higher the conversion efficiency, the higher the energy utilization, the smaller the electricity loss. And the conversion efficiency of charge and discharge is related to current. At the same power, the lower the current, the lower the loss. The efficiency of a conventional low-voltage battery is about 95% on a single charge and discharge, and the electricity utilization rate of a single charge-discharge cycle use is only about 90%. TSUN Hybrid Storage Unit adopts high-voltage battery models, so the voltage of charge-discharge is high and the current is low.
What's more, the single charge-discharge efficiency reaches 98%, and the electricity utilization rate of a single charge-discharge cycle use is more than 95%.
Flexible and Multiple Use
TSUN Hybrid Storage Unit provides multiple working modes to demand customers' use.
Auto Scheduling Mode: When electricity energy generated PV system is enough to use during the day (especially the next morning when the PV system is not working), TSUN Hybrid Storage Unit can store the unused electricity during the day and release it at night.
Time-sharing Tariff Mode: When electricity energy generated PV system is not enough to use during the day (especially the next morning when the PV system is not working), TSUN Hybrid Storage Unit can be charged for specific time that users set( Usually at night when the electricity price is low), then releasing the electricity during the peak demand in the morning. In this mode, users can obtain the benefits between different electricity price.
Back up Mode: When the users' local power grid is unstable and exists power outage, this mode can store enough electricity for customers to use.
As a solar energy conversion device, PV modules can output energy under sunlight and cannot be turned off, which makes the DC high voltage must exist in PV array under the condition of sunlight. When a building with PV system is on fire, firefighters cannot use water to put out the fire if the PV string wire is damaged.
Because it exists the risk of electric shock, threatening the safe of firefighters. TSUN Module-level Rapid Shutdown meets the requirement of NEC2017/2020, which is installed in PV string.
In case of fire, the PV string can be cut off to eliminate the DC high voltage, so the firefighters can safely use water to put out fire and avoid the risk of electric shock.
Multiple Ways to Rapid Shutdown
TSUN Module-level Rapid Shutdown possesses multiple ways to rapid shutdown, which can be flexibly chosen based on the practical situation of the field.
In emergency situations such as fire, the users can turn off the switch on the control box with one key. When the users presses the switch, Rapid Shutdown will cut off DC electricity in the PV strings within 10 seconds to ensure no DC high voltage in PV system, so as to guarantee the safety of firefighters.
TSUN Rapid Shutdown possesses over-temperature detection function. When the temperature near the shutdown is detected to be above 85°, it can automatically shutdown to ensure no DC high voltage in PV system and restore the connection when the temperature drops.
In a word, compared with other manufacturers, TSUN Hybrid Storage Unit and Module-level Rapid Shutdown possess excellent product performance, unique structural design, reliable product quality. To know more product details, please read the related website. Hybrid Storage Unit, Model-level Rapid Shutdown