公开(公告)号：KR100920152B1

公开(公告)日：2009-10-06

申请号：KR1020090061919

申请日：2009-07-07

Applicant: (주)그린파워

Inventor： 조정구 ,  김준하 ,  구태근 ,  송두익

IPC: H02M7/48 ,  H02M5/10

CPC classification number: Y02E10/56 ,  H02M7/48 ,  H02M5/10

Abstract: PURPOSE: A grid tie PCS(Power Conditioning System) device using transformer tap switching is provided to low maintain an output current of PCS by properly switching a tap of a transformer according to a change of an output voltage of a solar cell due to solar radiation increase. CONSTITUTION: A grid tie PCS device(100) includes a DC-AC converting part(20), a tap switching part(30), a transformer(40), and a control part(60). The DC-AC converting part receives a DC power from an external power supply source. The DC-AC converting part converts the DC power into an AC power, and outputs the AC power in which a current amount is controlled by an external control unit. The DC-AC converting part reduces a voltage of the DC power while increasing the current amount of the AC power. The tap switching part includes a plurality of output lines. The transformer includes a primary winding part(41) and a secondary winding part(42).

Abstract translation: 目的：提供使用变压器抽头切换的并网PCS（功率调节系统）装置，通过根据太阳辐射导致的太阳能电池输出电压的变化，适当地切换变压器的抽头来维持PCS的输出电流。 增加。 构成：电网并联PCS装置（100）包括DC-AC转换部分（20），抽头切换部分（30），变压器（40）和控制部分（60）。 DC-AC转换部从外部电源接收DC电力。 DC-AC转换部将DC电力转换为AC电力，并输出由外部控制部控制电流量的AC电力。 DC-AC转换部件在增加AC电力的当前量的同时降低DC电力的电压。 抽头切换部分包括多个输出线。 变压器包括初级绕组部分（41）和次级绕组部分（42）。

公开(公告)号：KR100911122B1

公开(公告)日：2009-08-11

申请号：KR1020090044232

申请日：2009-05-21

Applicant: (주)그린파워

Inventor： 조정구 ,  구태근 ,  송두익 ,  김준하

IPC: H02M7/48 ,  H02M7/493

CPC classification number: Y02E10/56 ,  H02M7/48 ,  H02M7/493

Abstract: An enhanced power converting device converting multiple DC electric power source to AC is provided to reduce the content of the high-frequency current without increasing an output voltage level of DC-AC power converters. The first DC-AC transform unit(200) converts into the AC power supply with the PWM process. The second DC-AC transform unit(300) converts into the AC power supply with the PWM process. The first winding of the transformer(500) is serially arranged between the alternating current power output stage of the first DC-AC transform unit and alternating current power output stage of the second DC-AC transform unit. The second winding of transformer is connected to the systematic power to supply the systematic power.

Abstract translation: 提供将多个DC电源转换为AC的增强型电力转换装置，以在不增加DC-AC电力转换器的输出电压电平的情况下降低高频电流的含量。 第一DC-AC变换单元（200）通过PWM处理转换成AC电源。 第二DC-AC变换单元（300）通过PWM处理转换成AC电源。 变压器（500）的第一绕组被串联地布置在第一DC-AC变换单元的交流电力输出级与第二DC-AC变换单元的交流电力输出级之间。 变压器的第二绕组连接到系统电源以提供系统电源。