继阳光电源SG125HV、古瑞瓦特MAX 80KTL3 LV之后，本期拆解主角为固德威GW15K-SDT。
作为固德威的重点产品之一，其SDT G3系列采用全新家族化外观，采用铝镁合金拉伸技术，带有超静音设计（噪声最低29dB）。最大效率可达98.7%，160V 超低启动电压，最大22A输入电流。整机IP66防护等级适应各种恶劣环境，可选配直流拉弧保护、RSD、二级防雷保护保障电站安全，延长电站寿命。
Graphical representation of GW15K-SDT of Goodwe: Integrating German, American, Chinese, and Japanese Supply Chains; with the key components domesticating Domesticating Three Key Components
Built upon the foundation of the downstream industry chain, Chaodian has carefully selected ten outstanding products from the inverter industry for disassembly, aiming to reveal their internal core structures and cost compositions, and to identify more accurate business opportunities for the Chinese supply chain.
Following SunGrow’s SG125HV and Growatt’s MAX 80KTL3 LV, this essay we will focuses on the dissection of Goodwe’s GW15K-SDT.
GW15K-SDT is a star product from Goodwe, a three-phase photovoltaic inverter widely used in residential and small-scale commercial rooftop photovoltaic systems.
Upon disassembling the GW15K-SDT, Chaodian found that its IGBT and MOSFET chips are supplied by Germany’s semiconductor company Infineon; MCU chips are sourced from Texas Instruments, and connectors from American company Amphenol; inductors, PCB boards, and transformers are respectively provided by Chinese suppliers Yigor, Shengyi Electronics, and Clik; capacitors and heat sinks come from traditional Japanese electronics companies Panasonic and Sanyo.
Based on the disassembly of various inverter products from leading manufacturers with different models and specifications, Chaodian analyzes that the supply of components such as inductors, PCB boards, and transformers has been basically localized, but other structural components, especially the core chips, are still dominated by foreign suppliers. This is closely related to the early and deep accumulation of foreign manufacturers and the need for Chinese inverter products to undergo overseas certifications.
In the inverter industry, listed company Goodwe (688390.SH) is currently among the top-tier players with impressive market performance.
Financial reports show that Goodwe sold approximately 688,300 inverters in 2022, of which 461,000 were grid-connected inverters, accounting for 67%; and 227,300 were storage inverters, accounting for 33%. The company’s inverter products are primarily exported, with overseas sales reaching around 577,300 units, accounting for 83.9%.
In 2022, Goodwe achieved revenue of 4.71 billion RMB, a year-on-year increase of 75.87%; and a net profit of 636 million RMB, a year-on-year increase of 128.48%.
In the first quarter of this year, Goodwe achieved revenue of 1.719 billion RMB, a year-on-year increase of 164.6%; and a net profit of 336 million RMB, an astonishing year-on-year increase of 3473.7%.
As one of Goodwe’s key products, its SDT G3 series features a brand-new, family-like appearance, adopting aluminum-magnesium alloy stretching technology with ultra-quiet design (minimum noise 29dB). The maximum efficiency can reach 98.7%, with an ultra-low start-up voltage of 160V and a maximum input current of 22A. The entire machine has an IP66 protection level, suitable for various harsh environments. Optional DC arc pulling protection, RSD, and secondary lightning protection ensure station safety and extend the life of the power station.
In the next edition, the focus will be on a best-selling model of the American photovoltaic giant, Enphase. The list of suppliers is undoubtedly unexpected, so please stay tuned.