Photovoltaic Grid-Connected Inverter SG100K3

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1. Structure of Photovoltaic Grid-Connected Inverter SG100K3 Description

A solar inverter, or PV inverter, or Solar converter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into

autility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network.

 It is acritical BOS–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar inverters have

special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.

Suitable for 50Hz/60Hz grid, could be used in Asia, Australia and Europe.

 

2. Main Features of the Photovoltaic Grid-Connected Inverter SG100K3

* Advanced Technology, Grid-friendly

• Optional low-voltage and zero-voltage ride through to cope with various grid conditions

• SVG function at night, response to grid directives around the clock

• Reactive power control with power factor from 0.9 lagging to 0.9 leading

 

* More Compact, Saving Space for PV Plant

• Power density enhanced 40%, one of the central inverters with highest power density in the PV industry

• Save installation spaces and lower the plant initial cost

• Front maintenance, able to install against the wall, convenient installation and maintenance, saving operation cost of the PV plant

 

* Efficient, More Yields

• Max. efficiency at 97.3% with transformer

• Efficient MPPT control strategy, improve power yields

• 28335 chips adopted, more accurate calculation, more power yields

 

* More Advantages 

• Perfect protection and fault alarm system, safe and reliable

• User-friendly dynamic graphics LCD

• Efficient PWM algorithm, low consumption of switch

• Operate without power derating at -25℃ - +55℃

• Reliable and continues operation in high altitude environment

• Auxiliary heater (opt.)

• CGC certification, compliance with BDEW

 

3. Photovoltaic Grid-Connected Inverter SG100K3 Images

 

 

4. Photovoltaic Grid-Connected Inverter SG100K3 Specification

Input Side Data

 

Max. PV input power

113KW

Max. PV input voltage

1000V

Set-up voltage

500V

Min. operation voltage

480V

Max. PV input current

236A

MPP voltage range

480~850V

No. of DC inputs

4

Output Side Data

 

Nominal AC output power

100KW

Max. AC output apparent power

110KVA

Max. AC output current

158A

THD

<3%(Nominal power)

Nominal AC voltage

400V

AC voltage range

310V~450V

Nominal grid frequency

50/60Hz

Grid frequency range

47~52Hz/57~62Hz

Power factor

>0.99@default value at nominal power, adj. 0.9 overexcited ~0.9 underexcited

Isolated transformer

Yes

DC current injection

<0.5 % In

Efficiency

 

Max. efficiency

97.30%

European efficiency

96.70%

Protection

 

Input side disconnection device

Breaker

Output side disconnection device

Breaker

DC overvoltage protection

Yes

AC overvoltage protection

Yes

Grid monitoring

Yes

Ground fault monitoring

Yes

Insulation monitoring

Yes

General Data

 

DimensionsW×H×D

806×1884×636mm

Weight

760kg

Operating ambient temperature range

-25~+55

Night power consumption

<40W

External auxiliary supply voltage

No

Cooling method

Temperature controlled air-cooling

Ingress protection rating

IP21

Allowable relative humidity range

0~95% no condensing

Max. operating altitude

6000m(3000m derating)

Fresh air consumption

870m³/h

Display

LCD

Communication

RS485/Modbus, Ethernet(Opt.)

 

 

5. FAQ of Photovoltaic Grid-Connected Inverter SG100K3

Q1. What is the difference between inverter and solar inverter?

A1. Inverter only has AC inpput, but solar inverter both connect to AC input and solar panel, it saves more power.

 

Q2. What is the difference between MPPT&PWM?

A2. MPPT has higher efficiency, it can track the max power point and won't waste energy.

 

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Q:In a photovoltaic grid-connected project, the role of the inverter is to convert the voltage into AC 220V or 380V for the grid, since the transformer will raise the voltage again
Connected to the grid is connected to which specific location ah? Transformer is to buy a separate, or buy inverter inside the type of transformer? For example, Sweden's 15KW and 30KW grid roof projects, the roof, for example, more remote to be transported to other electricity.
Q:The working principle of photovoltaic grid - connected inverter
In the small-capacity inverter generally push-pull inverter circuit, full-bridge inverter circuit and high-frequency step-up inverter circuit three, push-pull circuit, the step-up transformer neutral plug connected to the positive power supply, two power Alternating current, the output to get AC power, due to the power transistor to ground, drive and control circuit is simple, and because the transformer has a certain leakage inductance, can limit the short circuit current, thus improving the reliability of the circuit. The disadvantage is the low utilization of the transformer, driving the emotional load is poor.
Q:What are the methods of photovoltaic grid-connected inverter control
Sine wave output inverter control integrated circuits, sine wave output of the inverter, the control circuit can be used microprocessor control, such as INTEL company produced 80C196MC, Motorola produced MP16 and MI-CROCHIP company PIC16C73 and so on, these single-chip microcomputer has a multi-channel PWM generator,
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: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.
Q:What is the PV inverter starting voltage
Photovoltaic inverter, also known as power regulator, according to the inverter in the use of photovoltaic power generation system can be divided into two kinds of independent power supply and grid. According to the waveform modulation method can be divided into square wave inverter, stepped wave inverter, sine wave inverter and modular three-phase inverter. For the inverter for the grid system, depending on whether the transformer can be divided into transformer-type inverter and transformer-free inverter.
Q:Photovoltaic grid-connected inverter without DC emc how will happen
Solar photovoltaic power generation technology is the use of solar cells, the photovoltaic effect of semiconductor materials, solar radiation can be directly converted into a new type of power generation system, solar energy is a radiant energy, solar power means --- to direct conversion of sunlight Into electricity,
Q:Grid-connected inverter is generally divided into photovoltaic power generation grid-connected inverter, wind power grid-connected inverter, power equipment and grid-connected inverter and other power generation equipment power generation inverter.
The small use of field-effect transistors while using a DSP conversion controller to improve the quality of the output power makes it very close to the sine wave current.
Q:The function of photovoltaic grid - connected inverter
In general, single-phase h-bridge is a common configuration of dc / ac-level, but can also be used in three-phase and other configurations.
Q:What is the difference between low voltage grid connection and medium voltage grid connection?
When the power grid failure or disturbance caused by the power supply and network voltage drop, in the voltage drop range, the power group can be uninterrupted through the inverter and network operation.

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