 GDCPH supercapacitor solar/wind power generation system energy collection/use controller uses supercapacitors as the solar/wind energy collection buffer. During energy collection, supercapacitors are temporarily stored in the supercapacitor bank, and the energy is transferred to the battery after reaching a certain amount of energy storage. When using the battery energy, the battery first transfers the energy to the supercapacitor bank, which directly supplies energy to the load. Supercapacitors, which store energy directly, can also be used without batteries. Solar panel/wind generator GDCPH supercapacitor bank battery (lead acid/nickel/lithium, etc.) load (street lamp or other output end) DC-DC controller Schematic diagram of power collection/usage controller for GDCPH supercapacitor solar/wind power generation system Working steps: Charging link: The current output from the solar cell/wind generator directly enters the supercapacitor bank. When the supercapacitor bank reaches the set voltage V1, the electric energy in the capacitor bank stably charges the battery through DC-DC. When the voltage of the supercapacitor bank drops to the set voltage V2, DC-DC stops charging the battery. Wait until the supercapacitor bank is charged again by the solar cell/wind generator until V1 starts working again, stop charging the battery after detecting that the battery is fully charged, then charge the supercapacitor bank until V3 is fully charged and cut off the power generation link to charge the supercapacitor bank. Discharge link: By the super capacitor Banks through DC - DC to provide load voltage, current from the battery to the super capacitor charging, super capacitor Banks to stop after a certain voltage V4, super capacitor Banks as the discharge voltage decreases, after reaching the V5 start battery charged to the super capacitor Banks again, detected after put the electric battery discharge closed to the super capacitor group, After that, the energy in the ultracapacitor bank is put to a certain voltage or completely exhausted, and the power supply to the load is stopped. System features: In the case of instantaneous large current, it can realize efficient collection of short-time large current energy; Avoid the battery by the impact of high current and because it is difficult to accept high charging current for a short time, energy collection is not complete - 1 - In particular, it can solve the problem of complete collection of energy in the instant wind of the wind generator. In the case of low voltage and low current, efficient collection of small current can be achieved. In the case of solar cells in rainy weather or wind turbines in low wind, these power generation systems can only output low voltage and low current. In this case, Usually traditional directly to the battery charging controller because the voltage is less than battery voltage to the battery to charge, or reach the charging voltage and current is too small and reach the purpose of filling into the battery loss is too big, so that the system is rainy day/tiny wind environment can still will power link to produce small energy battery for power. Traditional design always need to consider the situation of the continuous rainy day/small wind can't to battery charging and many times more the design of the electrical generation and energy storage, such as solar panels more area is not only the increase of the cost, at the same time under the condition of strong winds due to the large choke area is also prone to scrape away, even there is the case of solar street light light pole blown down; Power to the load case, the battery is often uncertain due to load condition, too big or too small, resulting in a battery, the battery premature failure, the super capacitor discharge directly to the load, can meet the requirements of short time load power, improve and increase the output power of the system, and the output voltage is more stable, especially in low temperature environment, The charging/discharging capacity of the battery will be greatly reduced. In addition, there is no need to worry about overdischarge of supercapacitor because the working voltage of supercapacitor can be as low as 0V. The traditional pattern of battery discharge directly, in large load discharge situation is likely to cause failure, also can cause failure in a small load case, this is due to shut off after detected after electric battery load, battery will in no-load condition, at this time due to the nature of the battery will be battery open circuit voltage rise gradually, Is to a certain voltage will lead to the controller for the electricity supply power to the load, the load cases, right controller work load will immediately pull voltage of the battery is low, so as to stop discharging, in small load cases, the battery voltage is gradually reduced, the load will be forced to get energy from the battery, resulting in battery produced put, This situation is particularly common in LED street lamps, which is also the reason for the sharp increase in short-term battery failure after the adoption of more energy-efficient LED street lamps; Application design examples: Solar panel -GDCPH Supercapacitor energy controller - Solar street lamp system with high efficiency LED light source The solar panel uses 12V 40 ~ 60W, the supercapacitor bank uses 80 ~ 100F/17.5V, the battery uses 12V 45 ~ 60Ah, the load is 30 ~ 50W high-efficiency white LED, and the lamp pole is 6 meters high. Its solar panels and batteries use nearly half as much energy as traditional solar streetlights. The street lamp can still work normally under continuous cloudy and rainy conditions. Even in the case of extreme energy shortage, it can still work normally in the first 3-5 hours after the street lamp is turned on. In the following time, the brightness of the street lamp will gradually decline, but it will remain bright for a longer time. In the system, due to the small power still rainy day solar cells can be collected in the super capacitor and battery, the battery in addition to the extreme weather conditions, including the rainy day is always in a state of mild discharge at ordinary times, in addition the charging and discharging current is stable, storage battery charging and discharging link ideal, no charge discharge occurs, The battery in the system can truly achieve a life of 5 to 8 years. |