Sineng Electric Co., Ltd. is a leading solar inverter manufacturer in the world. According to the IHS Markit 2017 Report, Sineng Electric is the world's sixth largest solar inverter manufacturer. In 2014, following integration with a Fortune 500 company's PV business, the company became a leader in terms of R&D, management and marketing in the global PV market. Currently, Sineng Electric has completed the establishment of its local sales and service system for the Indian market. Once the new modern facility goes into production in Bangalore, the company's annual solar inverter production capacity is expected to reach 5GW. Sineng Electric is capable of meeting the diversified needs of its customers with the widest portfolios of solar inverters ranging from single- and three-phase string inverters up to megawatt-sized central inverters and central distributed inverters. This extensive range of solar inverters is suitable for the smallest residential photovoltaic systems right up to multi-megawatt PV plants.

2-Central distributed inverter solution (Take 2MW as an example)

a. Product Introduction
b. Technology Specifications
c. Technology Advancements
d. Targeted/ Benefitted Customer Segment

a. Product Introduction

Central distributed inverter integrates the features of central and string inverter. It has the same layout of PV plant as central inverter but the combiner boxes have MPPT function, which is similar as string inverter. Each 1MWac has maximum 60 MPPTs, which can effectively solve power generation losses because of dust covering, shade blocking, direct current line loss inconformity, module degradation, dip angle discrepancy and other module mismatch and result in power generation improvement. Because the voltage from the intelligent MPPT combiner to the inverter is promoted above DC 800 V, the AC voltage from inverter to the transformer is promoted to AC 520V, corresponding cost of AC/DC cable can be reduced about 30%.

b. Technology Specifications

Electrical Data CP-2000-B-OD
Max. input voltage 1000V

MPPT voltage range

No. of MPPTs 40~60
Rated output power 2000kW
Max. output AC powe 2200kVA
Rated grid voltage 520V
Optional Grid voltage range 442~572V
Rated grid frequency 50Hz/60Hz
Adjustable displacement factor 0.8(lagging) ~ 0.8(leading)
Max. / European efficiency 99.1% / 98.70%
Standby consumption <40W
General Data  
Dimensions(W × H × D) 2991×2896×2438mm
Weight 5000kg
Operating temperature range -30~60
Cooling concept

Temperature controlled air-cooling

Degree of protection IP54
Max. permissible value for relative humidity 0~95%, non -condensing
Max. altitude 6000m (derating> 3000m)
Communication port/protocols Standard: RS485, Ethernet


c. Technology Advancements

Multi-MPPT design, solve panel mismatch problem, 2%~5% power generation increased(circumstances depend);

  • PV-array string fault monitoring
  • Wider MPPT range 300-820VDC, more power generation yield
  • Nature cooling for MPPT optimizer
  • High DC input and AC output voltage decreasing cable line loss
  • DC and AC side film capacitor life prediction function
  • LCD power supply shut down technology( patent)
  • Fan speed regulation function ( VS load and inverter temp.) ( patent)

d. Targeted/ Benefitted Customer Segment

Compared with central inverter, central distributed inverter can effectively solve power generation losses because of dust covering, shade blocking, direct current line loss inconformity, module degradation, dip angle discrepancy and other module mismatch, DC voltage and MPPT voltage range, which efficiently increase power generation. Compared with string inverter, central distributed inverter have lower system cost because of inverter cost and smaller cable section cross for higher DC voltage (constant 800V); also the higher DC voltage will lead to lower power loss of DC cable.

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