Abstract:
PURPOSE: A loss calculating method of a systematic solar power generation system and a device thereof are provided to improve the performance of the systematic solar power generation system by calculating a loss occurs in the systematic solar power generation according to changes of a surrounding environment. CONSTITUTION: A performance database(100) collects operation data of a solar power generation system and converts the intensity of solar radiation and the DC/AC electricity into equivalent operating hours. A loss calculating unit(200) calculates the performance and losses of the solar power generation system through a loss calculating method using the equivalent operating hours. A calculation result display unit(300) displays loss information calculated by the loss calculating unit according to a fixed period. A memory(400) stores a calculation value of the performance database and the loss information.
Abstract:
PURPOSE: A generation performance estimating method of a systematic solar power generation system and a device thereof are provided to estimate the development performance of the solar power generation system according to changes of a surrounding environment, thereby supplying the performance improvement, the customized optimal design, the long term reliability and safety of the solar power generation system. CONSTITUTION: A performance database(100) collects operation data including an output value, the intensity of solar radiation, temperature, a wind speed of a solar power generation system. A power generation performance estimating unit estimates power generation performance by converting the intensity of solar radiation and the DC/AC electricity of the solar power generation system based on the operation data. An estimation result display unit(300) displays information about the output value and a power generation performance estimation value of the solar power generation system. A memory(400) stores the operation data and information about the estimation value and the output value.
Abstract:
본 발명은 실리콘 기판의 표면에 텍스처를 형성하는 표면조직화공정을 포함하는 실리콘 태양전지 제조방법에 관한 것으로, 표면조직화공정의 앞에 상기 기판의 데미지를 제거하는 전처리공정을 더 포함하며, 상기 전처리공정이 NaOCl을 포함하는 용액에 상기 기판을 침지한 상태에서 초음파를 가하여 이루어진다. 본 발명은, 초음파 및 NaOCl을 이용한 전처리공정을 거친 실리콘 기판에 표면조직화공정을 실시함으로써, 태양전지의 변환효율을 감소시키지 않으면서 기판의 표면조직화과정에서 식각되는 실리콘의 양을 감소시켜 태양전지 제조시의 재료비용을 감소시킬 수 있는 효과가 있다. 또한, 종래의 전처리공정에 비하여 낮은 농도의 용액을 이용하여 낮은 온도에서 전처리공정을 실시함으로써, 제조비용이 감소하는 효과가 있다. 나아가 NaOCl 용액을 사용함으로써, 캐리어의 수명이 증가하는 효과가 있다.
Abstract:
PURPOSE: A method for processing the surface of a silicon substrate for a silicon solar cell is provided to reduce manufacturing costs by reducing amount of silicon which is etched in a surface texturing process. CONSTITUTION: A silicon substrate is dipped in solution including NaOCl. Concentration of the NaOCl which is dipped in the solution is 1 to 10wt% range. Ultrasonic waves are added to the dipped silicon substrate. Damage of the silicon substrate is eliminated through a head end process. The head end process is processed at 10 to 30degrees for 1 to 10minutes. A texture is formed on the surface of the silicon substrate. An oscillation frequency of the ultrasonic waves is 20 to 40kHz.
Abstract:
PURPOSE: A silicon substrate for the solar battery and the manufacturing method thereof which is manufactured by directly using the manufacturing device, and this the silicon substrate for the solar battery using the continuous casting method keeps the high - liquid interface formed into the substrate growth direction and vertical direction. CONSTITUTION: The melt region(310) forms the molten silicon. The heating portion(312) heats the melt region. A space of casting part(320) casts the fused silicon to the silicon substrate of the plate type. The transport unit(330) horizontally transfers the solidified silicon substrate.
Abstract:
PURPOSE: A graphite crucible for a silicon electromagnetic induction melting process and a silicon melting refining device are provided to melt the silicon with high efficiency by applying an indirect melting method and a non-contact direct melting method together. CONSTITUTION: A graphite crucible has an upper open part and receives a silicon material. The crucible has a cylindrical structure including an outer wall surrounded with an induction coil. A plurality of first slits(310) passes through the outer sidewall and the inner sidewall of the crucible. A plurality of second slits(610) are formed from the edge to the central direction of the disk type crucible bottom.