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:Three-phase photovoltaic inverter grid, the use of phase-locked loop is what?
In addition to the function of converting DC current into alternating current, the inverter also has the maximum output tracking function (MPPT), overvoltage protection, short circuit protection, island protection, overheat protection, overload protection and DC grounding
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:Photovoltaic grid-connected inverter without DC emc how will happen
by means of energy converters can be converted into electrical energy. The process of converting light energy directly into electrical energy is precisely the response to photovoltaic effects. Without the need for any other mechanical parts, the energy in
Q:Installation and maintenance of photovoltaic grid - connected inverter
only when the local power sector permission by the professional and technical personnel to complete all the electrical connection before the inverter can be connected.
Q:What are the methods of photovoltaic grid-connected inverter control
and can set the dead time between the upper and lower arms, the use of INTEL 80C196MC to achieve sine wave output circuit, 80C196MC to complete the sine wave signal, AC output voltage, to achieve regulation. Circuit output generally use LC circuit filter high frequency wave, get pure sine wave.
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?
For photovoltaic power plants when the power system accidents or disturbances caused by photovoltaic power plant grid voltage drop, in a certain voltage drop range and time interval, the photovoltaic power plant can ensure that non-off-line continuous operation.
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:Generally a large grid-connected photovoltaic power plant will have several inverters
The use of a high-power grid-connected inverter into the grid, the need for line design is relatively simple, because the DC and AC lines are separated, the use of convergence box to summarize, DC bus and then into the grid inverter
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
Part of the distributed grid-connected projects, the basic are "spontaneous use, the power of the Internet," these do not need to boost, because the extra power is actually consumed by the surrounding electricity users, do not boost to a Level power grid;

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