Commercial UPS load is mostly the IT equipment need for AC power, so the product type for the typical AC output UPS, including backup type UPS, online interactive UPS and dual transformation online UPS, there are applications. Communication power supply (high frequency switching rectifier), which is widely used in telecommunication field, can be understood as a commercial UPS. Industrial UPS product concept is more generalized, including both the AC output UPS and the DC output UPS, and even a variety of combination of product types. In different industrial areas, the proportion of AC UPS and DC UPS is not the same. Even the UPS AC, industrial UPS technology is also mostly traditional silicon controlled rectifier +IGBT inverter technology structure. This traditional dual transform online UPS high reliability is widely recognized by industrial customers.
Inverter can not boot 1.The battery voltage is too low or the battery is damaged, to recharge or replace the battery. 2.The battery is not connected with the wire of the pure sine power inverter, please reconnect. 3.The positive and negative pole of the battery and the inverter is reversed, which leads to the fuse, replacing the fuse.
No output 1.Battery voltage is too low, recharge or replace the battery, check whether the wire connection is good. 2.Input voltage is too high, according to the rated input voltage of the pure sinewave inverter to adjust the appropriate input voltage. 3.Load power is greater than the nominal power of the inverter, use the inverter which power is less than the nominal power, or replace the inverter which nominal power is greater. 4.Inverter over temperature protection, the inverter is placed in a ventilated place to cool down for 15 minutes. 5.When using a small power consumption, the inverter fails to start, and the peak power of the inverter is larger than the load. Replacement of the inverter with greater peak power.
Inverter alarm 1.Under voltage alarm, the input voltage is too low, need to charge or replace the battery. 2.Over voltage alarm, input voltage is too high, change the appropriate input voltage. 3.Over temperature alarm, the inverter cool down for 15 minutes. 4.Overload alarm, turn off part of the load or the use of the load which power less than the nominal power of the inverter.
Battery usage time is too short 1.Electrical power consumption is too large, the replacement of large capacity battery. 2.Battery defective or damaged, replace the battery. 3.Battery charging is not enough, replace or charge the battery. 4.Attenuation of a wire, shorten the length of the wire or use a thicker wire.
Inverter can only drive small power load Attenuation of a wire, shorten the length of the wire or use a thicker wire.
Low voltage DC power supply for safety 1.Low voltage DC power supply LED lighting safe and reliable. 2.Low voltage direct current low home power inverter drive home appliances, more safe.
Environmental protection and save electricity 1.One time investment, long service life. 2.More electricity consumption but save with inexhaustible solar energy. 3.Idle batteries can be recycled.
Anti-theft function The home solar hybrid system has automatic light control function, automatic light in dark. If you use a timer or a controller, can be set on random time simulation in the house during the day, can automatically play music. Low voltage DC power supply LED lamp is lit or extinguished, or random light so that thieves can not judge whether there is someone in the house. Even if no one is relatively safe, it can avoid the phenomenon of people moving into the lives of people.
Keep the house clean 1.Low voltage direct current power supply driving small power inverter driven exhaust fan timing out the exhaust, the indoor harmful gas discharged outdoor. 2.Because there are air exhaust system in the house to exchange the outdoor air to reduce the window exhaust, the house is relatively clean.
Solar panels inverter systems control scheme is: photovoltaic battery converse solar energy into electrical energy, and the series parallel tuned to DC voltage which meet the SPWM inverter, through inverter and filter inductor formed and grid voltage with the same frequency and phase of sinusoidal current, the realize the grid inverter using SPWM (sine pulse width modulation) inverter technology. According to the periodic condition of power system, the following 3 conditions should be satisfied when the SPWM inverter circuit is connected to the grid: 1.In the renewable energy feedback system, the output voltage of the inverter is close to that of the city power, and the pressure difference should be less than 10%. 2.Inverter output frequency close to the frequency of the city power, the general frequency difference is not more than 0.4Hz. 3.Inverter output current and the city electric voltage phase is same, usually this phase difference should not exceed 10 degrees. PV grid connected inverter control is the key of the inverter design, the use of advanced control technology is the key technology to improve the performance of the solar inverter. With the high frequency of power electronic devices and the improvement of microprocessor operation speed, it is possible that some advanced control strategies can be applied to the photovoltaic grid connected control.
Improving the conversion efficiency of the solar inverter is the biggest problem in the solar photovoltaic power generation. Since the output volt ampere characteristic curve of photovoltaic array is nonlinear, and has a close relationship with the solar radiation intensity, environmental temperature, rain, fog and other weather conditions, with the different sunlight intensity and ambient temperature, its voltage is changed, the output power also produced very big change, so the solar cell is a unstable power supply. In order to output as much power as possible under the same conditions of sunlight and temperature, improving the efficiency of the system, the MPPT of a solar cell array is proposed. The use of MPPT in the system can improve the conversion efficiency of the solar inverter system, but also to play the greatest potential in the light output power of photovoltaic array for any sunlight intensity, make full use of solar power inverter output.
