Solar inverter PCB manufacturing
♦Name: Photovoltaic Inverter Motherboard
♦Number of SMT lines: 7 high-speed SMT lines
♦SMT daily production capacity: more than 50 million points
♦Testing equipment: X-RAY tester, first piece tester, AOI automatic optical tester, ICT tester, BGA rework station
♦Mounting speed: CHIP component mounting speed (optimal conditions) 0.036S/chip
♦Minimum package: 0201, accuracy up to +0.04mm
♦Minimum device accuracy: PLCC, QFP, BGA, CSP and other devices can be pasted, pin spacing up to +0.04mm
♦IC-type placement accuracy: the mounting of ultra-PCB boards, flexible PCB boards, gold fingers, etc. has a high level, can be mounted/inserted/mixed TFT display driver boards, cell phone motherboards, battery protection circuits and other difficult products.
Product Description
Solar inverters can also be referred to as photovoltaic inverters ,It is a type of power inverter which converts the variable direct current (DC) output of a photovoltaic solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.
Composition of inverter circuit board
1. Control unit: The inverter control unit is mainly composed of electronic components such as processors, clocks, and drive circuits. The main function is to control and adjust each component inside the inverter. The performance of the inverter control unit determines the overall stability and accuracy of the inverter.
2. Rectifiers: The rectifier unit usually uses a silicon flow diode or IGBT component. Its main function is to convert the input DC power into DC power supply to provide a stable power supply for the inverter circuit.
3. Reverse unit: The inverter unit is one of the core components of the inverter circuit board. It is mainly composed of electronic components such as semiconductor components such as IGBT. Operating analog load.
4. Output filter: The main function of the output filter is to cut the AC waveform of the inverter output for peak-cut valley and eliminate harmonics to ensure that the AC power of the inverter output has a stable voltage, current, and frequency, and meets satisfaction. Requirements for power loads.
Home Solar Inverter
Outdoor monitoring system
Photovoltaic power field
The working principle of inverter circuit board
The working principle of the inverter circuit board is mainly to convert the input DC power into output AC power, and its specific working process is as follows:
1. the control unit monitors and controls the internal working state of the inverter through the processor and other electronic components to ensure that the working state of each electronic component inside the inverter is in a normal state.
2. the rectifier unit takes the input DC signal as the DC power source of the inverter, and carries out a certain degree of voltage stabilization.
3. the inverter unit converts the input DC signal into the output AC signal after certain processing, and then drives the output load. 4. the output filter converts the input DC signal into the output AC signal after certain processing, and then drives the output load.
4. the output filter carries out peak shaving and valley leveling, harmonic elimination and other processing on the AC power output from the inverter to ensure that the AC power output from the inverter has a stable voltage, current and frequency, and meets the requirements of the power load.
Classification of solar inverters
1. String Inverters
String inverters are the standard for most residential systems. They work by connecting multiple solar panels into an array and sending the power to a centralized inverter for DC to AC conversion that’s compatible with the grid.
String inverters are affordable and efficient. A single inverter can connect to up to 24 panels, and maintenance is easier because there are fewer working parts. However, because each individual panel is wired together, they essentially operate as a single unit. That means problems that reduce the power output of one panel will reduce the efficiency of every panel in the series.
2. Microinverters
Microinverters perform AC power conversion on all the individual panels. This means the efficiency of one panel won’t affect the others. Microinverters also offer panel level monitoring so you can determine when you need maintenance to get the most value out of your system.
Systems with microinverters are ideal for installations where some panels may see shade for part of the day.
That said, their sophistication makes them more expensive than string inverters, and sometimes they can require more maintenance because there are more points of failure. However, it’s much easier to increase your system’s output later by installing more panels compared to a string inverter, so you can make the conversion to solar over time as you can afford it.
3. Power Optimizers
Different Types of Solar Panel Inverters
Power optimizers are module-level power electronics meant to help your solar panels perform at maximum efficiency for as long as possible. How long? Microinverters and power optimizers are both installed on individual solar panels, but with a power optimizer, the conversion still happens at a centralized inverter.
Power optimizers combine the cost and reliability of string inverters with the efficiency boost and panel monitoring of a microinverter system. You can save money on installation compared to microinverters but, like a standard string inverter system, it can be harder to expand later on.
4. Hybrid Inverters
Hybrid inverters combine several types of solar technology into a smaller, more affordable unit. They are designed to read the current levels and determine whether or not to convert power for use with appliances, send it to the grid, or use it to charge a backup battery system so you can power your critical appliances during blackouts.
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