KR910003617Y1 - Power circuit - Google Patents

Power circuit Download PDF

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Publication number
KR910003617Y1
KR910003617Y1 KR2019880013415U KR880013415U KR910003617Y1 KR 910003617 Y1 KR910003617 Y1 KR 910003617Y1 KR 2019880013415 U KR2019880013415 U KR 2019880013415U KR 880013415 U KR880013415 U KR 880013415U KR 910003617 Y1 KR910003617 Y1 KR 910003617Y1
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South Korea
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winding
power
converter
load
commercial power
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KR2019880013415U
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Korean (ko)
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KR900005755U (en
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황용하
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배수윤
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Abstract

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Description

위상차 제어형 고효율 변환장치Phase difference controlled high efficiency inverter

제 1 도는 종래의 전력변환기의 블럭도.1 is a block diagram of a conventional power converter.

제 2 도는 본 고안의 블럭도.2 is a block diagram of the present invention.

제 3 도는 본 고안의 회로도.3 is a circuit diagram of the present invention.

제 4 도는 본 고안의 역변환부 출력전압 파형도.4 is a waveform diagram of the output voltage of the inverse converter of the present invention.

제 5 도는 본 고안의 정상동작시 전력공급도.5 is a power supply diagram in the normal operation of the present invention.

제 6 도는 동상의 입력전원 정전시 전력공급도.6 is a power supply in the event of a power failure of the in-phase.

제 7 도는 동상의 변환장치 고장시 전력공급도.7 is the power supply in case of inverter failure of in phase.

제 8 도는 동사의 축전지 초상충전시 전력공급도.8 is the power supply of the company's supercharged battery.

제 9 도는 동상의 축전지 재충전시 전력공급도.9 is a power supply diagram when recharging the battery of the statue.

본 고안은 부하에 안장한 전력을 공급함과 동시에 별도의 충전지가 필요없이 축전지를 충전 할 수 있고 별도의 축로변압기가 필요없이 전압을 강압 및 승압하며 또 변환장치의 고장 또는 과부하고 말미암아 상용전압으로 사용할 때 입력에서 유입되는 씨지(surge)나 노이즈(noise)가 부하정비에 악영향을 주는 것을 방지할 수 있는 마이크로프로세서(MICROPROCESSOR)로 제어되는 위상차 제어형 고효율변환장치에 관한 것이다.The present invention can supply the saddle to the load and at the same time can charge the battery without the need for a separate rechargeable battery, step down and boost the voltage without the need for a separate shaft transformer, and use it as a commercial voltage due to the failure or overload of the inverter. The present invention relates to a phase-controlled high efficiency converter controlled by a microprocessor (MICROPROCESSOR) that can prevent a surge or noise introduced from an input when adversely affecting load maintenance.

종래는 제 1 도에 표시한 것과 같이 전원변환장치는 사용전원이 교란 및 정전으로 인한 전력공급의 단절을 막기위해 순변환부 축전지, 역변환부, 강압 및 승압의 축로변압기, 스테틱스위치 등으로 구성되는 다단게 전력변환이 필요하므로 부품의 수요가 많아 원가가 많이 들게 되어 생산가가 놓아지며 신뢰성이 떨어지고 변환효율을 75%이상 올리기 어려운 문제점 등이 있었다.Conventionally, as shown in FIG. 1, a power converter includes a forward conversion part battery, a reverse conversion part, a step-down and step-up transformer, a static switch, and the like, in order to prevent power supply from being interrupted due to disturbance and power failure. Since power conversion is necessary, the cost of a lot of parts is high, and production costs are released.

그래서, 상기한 종래의 제반결점을 본인의 선등록인 실용신안등록 제34297호에서 해결코자 하였으나 이는 입력전압과 출력이 다른 경우 축로변압기가 필요하고 입력전압과 출력전압이 동일하더라도 입력에서 유입되는 써지나 노이즈에 대한 보호장치는 종래의 변환장치와 동일한 상태였다.Therefore, the above-mentioned conventional defects have been solved in the Utility Model Registration No. 34297, which is a pre-registered one. However, if the input voltage and the output are different, a shaft transformer is required, and even if the input voltage and the output voltage are the same, Gina noise protection was in the same state as a conventional converter.

본 고안은 제 2 도와 같이 다기능화 및 더욱 고효율화를 실현시키면서 본인의 실용신안등록 제34297호를 보완한 고안을 안출하게 된 것으로서 이를 첨부도면에 의거 상세히 설명하면 다음과 같다.The present invention is to devise a design that complements the utility model registration No. 34297, while realizing multi-functionality and more efficient as shown in the second diagram as described in detail based on the accompanying drawings.

첨부도면중, 제 3 도는 본 고안의 회로도로서 변압기부(1)는 정전압선(N1) 상용전원권선(N2), 부하권선(N3) 및 역변환부 출력권선(N4)과 축전지초기충전권선(N5)등 4개의 절연된 권선을 갖는 선형변압기로 구성되며 그리고 역변환부권선(N4)은 부하전압파형 및 부하전력의 공급을 제어하며, 사용전원권선(N2), 부하권선(N3), 역변환부 출력권선(N4)은 동심권선으로 구성되고 정전압권선(N1)은 임피던스 선트(shunt)(sh)를 사이에 두고 별도로 구성되어 있다.In the accompanying drawings, Figure 3 is a circuit diagram of the present invention, the transformer unit 1 is a constant voltage line (N 1 ) commercial power winding (N 2 ), load winding (N 3 ) and the reverse conversion unit output winding (N 4 ) and the initial battery charging winding (N 5) including four insulated consists of a linear transformer having a winding and inverse transformer winding (N 4) is controls the supply of the load voltage waveform and the load power, using the power winding (N 2), a load winding (N 3 ), the inverse converter output winding (N 4 ) is composed of concentric windings, constant voltage winding (N 1 ) is configured separately with an impedance shunt (sh) in between.

역변환부(2)가 정상동작상태에서 상용전원과 동기되어 동작할 때, 역변환부와 사용전원사이의 변위각 변화에 따라 전력의 흐름방향이 정해지게 되는데 역변환부(2)와 사용전원사이의 변위각이 적을 때 역변환부(2)는 축전지(B)의 전력을 부하에 공급하고 변위각이 증가하면 역변환부(2)는 부하에 전력을 공급하지 않고 정전압 권선(N1)을 통해 정전압제어된 전력이 부하에 공급되게 되며, 변위각이 보다 커지게 되면 부하조건이 유지되면서 실효전력이 역변환부(2)로 흘러들어가게 되어 축전지(B)는 충전된다(실용신안등록 제34297호 참조).When the inverse converter 2 operates synchronously with the commercial power supply in the normal operation state, the direction of power flow is determined according to the change in the displacement angle between the inverse converter and the used power source. When the angle is small, the inverse converter 2 supplies the power of the battery B to the load, and if the displacement angle is increased, the inverse converter 2 does not supply power to the load and is constant voltage controlled through the constant voltage winding N 1 . The power is supplied to the load, and when the displacement angle becomes larger, the effective power flows into the inverse converter 2 while maintaining the load condition, thereby charging the battery B (see Utility Model Registration No. 34297).

또한 정상운전시 역변환부(2)는 부하전압이 변동을 정전압으로 제어하며 정전압권선(N1)을 통한 상용전원에서 부하전력을 공급한다.In addition, during normal operation, the reverse converter 2 controls the variation in the load voltage as the constant voltage and supplies the load power from the commercial power supply through the constant voltage winding N 1 .

축전지전력은 제 4 도와 같이 역변환부(2)에서 1주기가 52개 펄스로 구성된 정현파 PWM파형으로 변환되고 PWM휠타(3)에서 완전정현파로 만들어져 역변환부권선(N4)에 인가된다.The battery power is converted into a sinusoidal PWM waveform composed of 52 pulses in one cycle in the inverse transform unit 2 as shown in FIG. 4 and made into a full sine wave in the PWM filter 3 and applied to the inverse transform sub winding N 4 .

파형제어는 순간순간 발생되는 정현파 기준전압과 교류출력전압을 비교함으로써 이루어지게 되고 상용전원 AC은 반도체스위치(S1, S2)를 통해 상용전원권선(N2)과 정전압권선(N1)에 인가되며 정상동작시 역변환부(2)는 출력파형과 전압을 제어하고 부하전력은 정전압권선(N1)에서 공급된다.Waveform control is achieved by comparing the sine wave reference voltage and the AC output voltage generated instantaneously. The commercial power AC is connected to the commercial power winding (N 2 ) and the constant voltage winding (N 1 ) through semiconductor switches (S 1 , S 2 ). In normal operation, the reverse converter 2 controls the output waveform and the voltage, and the load power is supplied from the constant voltage winding N 1 .

사용전원 AC이 정전되거나 설정된 범위를 초과할 경우 사용전원연결용 반도체스위치(S1, S2)가 OFF되어 전원공급이 중단되고 역변환부(2)를 통해 축전지(B)가 부하전력을 공급하게 되며 역변환부(2)가 고장시 또는 과부하시 부하전류는 상용전원권선(N2)로 연결된 반도체스위치(S2)가 ON되어 상용전원에 의해 공급된다.When the power supply AC is out of power or exceeds the set range, the semiconductor switch (S 1 , S 2 ) for connecting the power supply is turned off to stop the power supply, and the storage battery (B) supplies the load power through the inverse converter (2). When the reverse converter 2 fails or is overloaded, the load current is supplied by the commercial power by turning on the semiconductor switch S 2 connected to the commercial power winding N 2 .

역변환부(2)가 정상상태로 되면 주변압기의 축전지초기충전권선(N5)과 반도체스위치(S1)를 통해 축전지(B)는 예비층전된다.When the reverse converter 2 is in a normal state, the battery B is preliminarily layered through the battery initial charge winding N 5 and the semiconductor switch S 1 of the peripheral voltage.

본 고안은 정상상태의 동작은 제 5 도와 같이 상용전력이 반도체스위치(S1)와 정전압 권선(N1)을 통해 역변환부(2)와 부하에 공급되며, 입력에 이상이 있을때는 제 6 도에 표시한 것과 같이 역변환부(2)에서 축전지전력을 부하에 공급하고 반도체스위치(S1)는 OFF된다.According to the present invention, in the steady state operation, commercial power is supplied to the reverse converter 2 and the load through the semiconductor switch S 1 and the constant voltage winding N 1 as shown in FIG. As shown in FIG. 2, the reverse converter 2 supplies the battery power to the load, and the semiconductor switch S 1 is turned off.

또한 역변환부(2)가 고장시 또는 과부하시에는 제 7 도와 같이 반도체스위치(S2)와 사용전원권선(N2)을 통해 부하전력이 공급되고 제 8 도와 같이 정상동작전에 축전지 예방충전이 일어나면 반도체스위치(S2)가 ON되어 상용전원권선(N2)를 통해 전력 공급되어 역변환부(2)는 기동되고 상용전원과 동기를 맞추게 된다.When the reverse converter 2 fails or is overloaded, the load power is supplied through the semiconductor switch S 2 and the power supply winding N 2 as shown in FIG. 7 and the preventive charge of the battery occurs before normal operation as shown in FIG. 8. The semiconductor switch S 2 is turned on to be supplied with power through the commercial power winding N 2 , so that the reverse converter 2 is started and synchronized with the commercial power.

이때 반도체스위치(S3)가 ON되고 역변환부(2)의 위상을 이동시켜 상용전원에서 전류가 흐르게 되어 축전지의 예비충전동작이 이루어지도록 하였으며 또한 축전지의 재충전 동작은 제 9 도에 도시한 것과 같이 축전지가 과방전됐을 때 상용전원은 상용전원권선(N2)를 통해 역변환부(2)는 재기동되고 축전지전압이 다시 낮아지면, 반도체스위치(S3)가 ON되어 전류는 역변환부(2)를 통해 축전지를 재충전시키게 되며, 재충전되는 동안에 부하는 상용전원권선(N2)을 통해 전력을 공급받으며 수분 후 역변환부(2)가 재기동되며 정상동작상태(제 5 도)로 되돌아간다.At this time, the semiconductor switch S 3 is turned on and the phase of the reverse converter 2 is shifted so that a current flows in the commercial power supply, so that the precharging operation of the battery is performed. Also, as shown in FIG. When the battery is over discharged, the commercial power is restarted through the commercial power winding (N 2 ), and when the battery voltage is lowered again, the semiconductor switch (S 3 ) is turned on so that the current is reversed. The battery is recharged through the load, while the load is supplied with power through the commercial power winding N 2 , and after a few minutes, the reverse converter 2 is restarted and returns to the normal operation state (FIG. 5).

상술한 것과 같이 본 고안은 부하에 안정한 전력을 공급함은 물론 별도의 충전지가 필요없고 입력측에서 유입되는 써지나 노이즈가 부하장비에 악영향을 주는 것을 방지하도록 된 것으로서 구조자체가 간소화되고 생산비의 절감은 물론 수요자의 욕구를 충분히 충족시킬 수 있는 매우 유용한 고안이다.As described above, the present invention not only supplies stable power to the load but also does not require a separate rechargeable battery, and prevents the surge or noise from the input side from adversely affecting the load equipment, thereby simplifying the structure itself and reducing the production cost. It is a very useful design that can satisfy the needs of consumers.

Claims (1)

축전지(B)와 역변환부(2) 및 PWM(3)로 구성된 제어형고효율변환장치에 있어서, 정전압권선(N1), 상용전원권선(N2), 부하권선(N3), 역변환부출력권선(N4) 및 초기 충전권선(N5)등에 의하여 동심권선형으로 변압기부를 구성하되 정전압권선(N1)은 임피던스선트(Sh)를 사이에 두고 구성하며, 상용전원권선(N2)은 반도체스위치(S2)를 거쳐서 상용전원(AC)측에, 그리고 역변환부출력권선(N4)은 PWM휠타(3)의 출력측에, 또 초기충전권선(N5)은 반도체스위치(S3)을 통해 PWM휠타(3)의 일측에 각각 접속시켜서 된 위상차제어형 고효율변환장치.In the controlled high efficiency converter comprising a storage battery (B), an inverse converter (2), and a PWM (3), a constant voltage winding (N 1 ), a commercial power winding (N 2 ), a load winding (N 3 ), and an inverse converter output winding (N 4 ) and initial charging winding (N 5 ), etc., the transformer section is constructed in a concentric winding type, but the constant voltage winding (N 1 ) is formed with an impedance line (Sh) interposed, and the commercial power winding (N 2 ) is a semiconductor Via the switch S 2 to the commercial power supply (AC) side, the reverse converter output winding (N 4 ) to the output of the PWM filter (3), and the initial charge winding (N 5 ) to the semiconductor switch (S 3 ) A phase difference control type high efficiency converter which is connected to one side of a PWM filter (3).
KR2019880013415U 1988-08-17 1988-08-17 Power circuit KR910003617Y1 (en)

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KR910003617Y1 true KR910003617Y1 (en) 1991-05-31

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