Q:How the output voltage of the PV inverter and the grid-connected voltage are determined DC voltage and AC side voltage does not matter, the general PV inverter AC output is 400V / N / PE. Sine wave output is the development trend of the inverter, with the development of microelectronics technology, there are PWM function of the microprocessor has also come out, so the sine wave output inverter technology has matured. Q:What are the methods of photovoltaic grid-connected inverter control Inverter main circuit need to have a control circuit to achieve, generally have square wave and sine wave two control methods, square wave output inverter power supply circuit is simple, low cost, but low efficiency, harmonic components. In addition, in order to prevent the upper and lower arm co-conduction, must be designed to turn off after the conduction circuit, that must be set dead time, the circuit structure is more complex. The disadvantage of this circuit is that the upper and lower arms of the power transistor are not common, so you must use a special drive circuit or use isolated power supply. Since the circuit has a freewheeling circuit, even if the inductive load, the output voltage waveform will not be distorted.
HARDWARE MONITOR QUOTES GENERATOR
Q:What is the difference between a PV inverter and a solar inverter? Instability, the wind speed and the equipment itself will directly affect the generator rotation, so the voltage and current fluctuations, frequency instability, in short, is the power quality is poor) Therefore, through the inverter after the first rectification inverter to improve the quality of power Q:The working principle of photovoltaic grid - connected inverter Full-bridge inverter circuit to overcome the shortcomings of the push-pull circuit, the power transistor to adjust the output pulse width, the output AC voltage RMS that changes. Q:Installation and maintenance of photovoltaic grid - connected inverter, any failure that affects the safety performance of the inverter must be immediately removed before turning on the inverter again. Q:Solar grid inverter does not merge into the grid, direct access to the load to the load power supply? In foreign countries due to the higher penetration rate of the car to go out to work or travel can be connected with the inverter battery drive electrical and various tools work.
HARDWARE MONITOR QUOTES HOW TO
Q:PV grid-connected inverter can directly load it? TL5001 operating voltage range of 3.6 ~ 40V, its internal with an error amplifier, a regulator, oscillator, a dead zone control PWM generator, low voltage protection circuit and short circuit protection circuit Q:After the PV inverter, how to achieve the same period before the network? When the voltage, frequency, phase does not meet the requirements, the automatic closing closing pulse. Q:What is the difference between a PV grid-connected inverter and an off-grid inverter? Grid-connected inverter does not need energy storage, but the energy can not be controlled, the number of photovoltaic sent to send online how much, simply do not want people to. ShineNet is an inverter monitoring software run in Windows XP, Windows Vista, Windows 7 operating system. It can monitor inverter via RS232 (or RS232 convert to USB cable) and RS485 wire connection. Customers can purchase the cable locally to get the inverter monitored, it is simple. Shine Design is the system design software just for inverters, It can conduct installers to figure out panel numbers for a system, panel numbers for each string, and which inverter model is suitable for the system. Moreover, it can print a design report after input all necessary parameters, can calculate DC/AC wire wastage, annual generation, etc.Ģ. Does the inverter have monitoring solutions for residential system?įor small rating system, we have wired two monitoring solution (ShineNet via RS232 or RS485). (a) Local wireless monitoring solution (ShineVision via RF module communication) (b) Global wireless monitoring solution (WIFI module via WIFI network)ģ. Do you have free solution for monitoring? > Low power consumption, powered by adaptor or battery.ġ. Have any design tool and how to use it? > Data archiving automatically and permanently with high security > Easy-to-understand data display by simple key operation: real-time power, three-phase AC voltage, PV voltage, daily, monthly and total power yield and income, temperature, light intensity, the date and time. It can be placed anywhere indoor with signal coverage. > Automatic monitoring of up to six inverters simultaneously, applicable for small home system. > RF communication for wireless operation >Communicate with inverters by RS485 or RS232 Solar System Monitor Shine Vision, Monitoring System Specifications