TWI399025B - Switch circuit of three-phase alternating-current power supply - Google Patents
Switch circuit of three-phase alternating-current power supply Download PDFInfo
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- TWI399025B TWI399025B TW96147912A TW96147912A TWI399025B TW I399025 B TWI399025 B TW I399025B TW 96147912 A TW96147912 A TW 96147912A TW 96147912 A TW96147912 A TW 96147912A TW I399025 B TWI399025 B TW I399025B
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Description
本發明係關於一種電源切換電路。The present invention relates to a power switching circuit.
三相交流電源係由三個頻率相同、振幅相等、相位依次互差120°之交流電勢組成之電源。三相交流電較單相交流電有很多優點，它在發電、輸配電以及電能轉換為機械能方面都有明顯之優越性。例如：製造三相發電機、變壓器都較製造單相發電機、變壓器省材料，而且構造簡單、性能優良。又如，用同樣材料所製造之三相電機，其容量比單相電機大；在輸送同樣功率之情況下，三相輸電線較單相輸電線，可節省有色金屬，而且電能損耗較單相輸電時少。由於三相交流電具有上述優點，所以獲得了廣泛應用。The three-phase AC power supply is a power supply composed of three AC potentials having the same frequency, equal amplitude, and phase difference of 120°. Three-phase AC has many advantages over single-phase AC. It has obvious advantages in power generation, transmission and distribution, and conversion of electrical energy into mechanical energy. For example, the manufacture of three-phase generators and transformers is more economical than the manufacture of single-phase generators and transformers, and the structure is simple and the performance is excellent. Another example is that a three-phase motor made of the same material has a larger capacity than a single-phase motor; in the case of delivering the same power, a three-phase transmission line can save non-ferrous metals compared to a single-phase transmission line, and the power loss is more than a single phase. Less when transmitting. Since three-phase alternating current has the above advantages, it has been widely used.
習知之許多用電器內部都設有交流/直流轉換電路，以將從三相交流電源獲得之交流電壓轉換為直流電壓後供自身使用，而當三相交流電源之一相或兩相交流電源出現異常時，就會影響供電交流/直流轉換電路之輸出，使用電器無法正常工作。Many of the conventional electric appliances are provided with an AC/DC conversion circuit for converting the AC voltage obtained from the three-phase AC power source into a DC voltage for use by itself, and when one phase of the three-phase AC power source or two-phase AC power source appears When an abnormality occurs, it will affect the output of the AC/DC converter circuit, and the appliance cannot work normally.
鑒於上述內容，有必要提供一種簡易的可對三相交流電源之工作狀態進行自動判斷和切換之三相交流電源切換電路，在三相交流電源之一相或兩相交流電源電壓出現異常時維持電壓輸出。In view of the above, it is necessary to provide a simple three-phase AC power switching circuit that can automatically judge and switch the working state of the three-phase AC power source, and maintains when one phase of the three-phase AC power source or the two-phase AC power source voltage is abnormal. Voltage output.
一種三相交流電源切換電路，包括一三相交流電源、一第一切換開關及一第二切換開關，該三相交流電源之第一相交流電源和第二相交流電源透過該第一切換開關選擇性輸出，該第一切換開關受該第一相交流電源之輸出電壓控制，當該第一相交流電源正常工作時，該第一切換開關輸出該第一相交流電源之輸出電壓，該第一切換開關之輸出電壓及該三相交流電源之第三相交流電源透過該第二切換開關選擇性輸出，該第二切換開關受該第三相交流電源之輸出電壓控制，當該第三相交流電源正常工作時，該第二切換開關輸出該第三相交流電源之輸出電壓。A three-phase AC power switching circuit includes a three-phase AC power supply, a first switching switch and a second switching switch, wherein the first phase AC power source and the second phase AC power source of the three-phase AC power source pass through the first switching switch Selective output, the first switch is controlled by an output voltage of the first phase AC power source, and when the first phase AC power source is working normally, the first switch switch outputs an output voltage of the first phase AC power source, the first An output voltage of a switch and a third phase AC power of the three-phase AC power source are selectively output through the second switch, and the second switch is controlled by an output voltage of the third phase AC power source, when the third phase The second switch outputs an output voltage of the third phase AC power source when the AC power source is working normally.
該三相交流電源切換電路透過兩切換開關實現了三相交流電源之三相輸出自動切換功能，在該三相交流電源之一相或兩相交流電源出現異常時維持電壓輸出穩定。The three-phase AC power switching circuit realizes the automatic switching function of the three-phase output of the three-phase AC power through the two switching switches, and maintains the voltage output stable when one of the three-phase AC power sources or the two-phase AC power source is abnormal.
參照圖1，本發明三相交流電源切換電路之較佳實施方式包括一三相交流電源、一第一切換開關10及一第二切換開關20，該三相交流電源包括一第一相交流電源P1、一第二相交流電源P2和一第三相交流電源P3，該三相交流電源之第一相交流電源P1、第二相交流電源P2和第三相交流電源P3均具有一火線L和一水線N。Referring to FIG. 1, a preferred embodiment of a three-phase AC power switching circuit of the present invention includes a three-phase AC power supply, a first changeover switch 10, and a second changeover switch 20, the three-phase AC power supply including a first phase AC power supply. P1, a second phase AC power source P2 and a third phase AC power source P3, the first phase AC power source P1, the second phase AC power source P2 and the third phase AC power source P3 of the three-phase AC power source each have a fire line L and One water line N.
該第一切換開關10為一繼電器，其包括一第一通道12、一第二通道14及一控制線圈16，該第一通道12設有一常開點1NO、一常閉點1NC及一輸出端1C，該第二通道14設有一常開點2NO、一常閉點2NC及一輸出端2C。該三相交流電源之第一相交流電源P1之火線L與水線N分別連接至該第一切換開關10之第一通道12與第二通道14之常開點1NO和2NO，該三相交流電源之第二相交流電源P2之火線L與水線N分別連接至該第一切換開關10之第一通道12與第二通道14之常閉點1NC、2NC，該第一切換開關10之控制線圈16受該三相交流電源之第一相交流電源P1控制，當該三相交流電源之第一相交流電源P1正常供電時，該第一切換開關10之輸出端1C和2C分別與該三相交流電源之第一相交流電源P1之火線L和水線N導通。The first switch 10 is a relay, and includes a first channel 12, a second channel 14 and a control coil 16. The first channel 12 is provided with a normally open point 1NO, a normally closed point 1NC and an output end. 1C, the second passage 14 is provided with a normally open point 2NO, a normally closed point 2NC and an output end 2C. The live line L and the water line N of the first phase AC power source P1 of the three-phase AC power source are respectively connected to the normally open points 1NO and 2NO of the first channel 12 and the second channel 14 of the first switch 10, and the three-phase AC The live line L and the water line N of the second phase AC power source P2 of the power source are respectively connected to the normally closed points 1NC, 2NC of the first channel 12 and the second channel 14 of the first switch 10, and the control of the first switch 10 The coil 16 is controlled by the first phase AC power source P1 of the three-phase AC power source. When the first phase AC power source P1 of the three-phase AC power source is normally powered, the output terminals 1C and 2C of the first switch 10 are respectively associated with the three The live line L of the first phase AC power source P1 of the phase AC power source and the water line N are turned on.
該第二切換開關20為一繼電器，其包括一第一通道22、一第二通道24及一控制線圈26，該第一通道22設有一常開點3NO、一常閉點3NC及一輸出端3C，該第二通道24設有一常開點4NO、一常閉點4NC及一輸出端4C。該三相交流電源之第三相交流電源P3之火線L與水線N分別連接至該第二切換開關20之第一通道22與第二通道24之常開點3NO和4NO，該第一切換開關10之輸出端1C和2C分別連接至該第二切換開關20之第一通道22與第二通道24之常閉點3NC、4NC，該第二切換開關20之控制線圈26受該三相交流電源之第三相交流電源P3控制，當該三相交流電源之第三相交流電源P3正常供電時，該第二切換開關20之輸出端3C和4C分別與該三相交流電源之第三相交流電源P3之火線L和水線N導通。The second switch 20 is a relay, and includes a first channel 22, a second channel 24 and a control coil 26. The first channel 22 is provided with a normally open point 3NO, a normally closed point 3NC and an output end. 3C, the second passage 24 is provided with a normally open point 4NO, a normally closed point 4NC and an output end 4C. The live line L and the water line N of the third-phase AC power source P3 of the three-phase AC power source are respectively connected to the normally open points 3NO and 4NO of the first channel 22 and the second channel 24 of the second switch 20, the first switching The output terminals 1C and 2C of the switch 10 are respectively connected to the first channel 22 of the second switch 20 and the normally closed points 3NC, 4NC of the second channel 24, and the control coil 26 of the second switch 20 is subjected to the three-phase communication. The third phase AC power source P3 of the power source controls, when the third phase AC power source P3 of the three-phase AC power source is normally powered, the output terminals 3C and 4C of the second switch 20 and the third phase of the three-phase AC power source respectively The live line L and the water line N of the AC power source P3 are turned on.
該三相交流電源切換電路之工作過程如下：當該三相交流電源之第一相交流電源P1正常供電時，該第一切換開關10之輸出端1C和2C分別與該三相交流電源之第一相交流電源P1之火線L和水線N導通，並連接到該第二切換開關20，此時若該三相交流電源之第三相交流電源P3正常供電，則該第二切換開關20之輸出端3C和4C分別與該三相交流電源之第三相交流電源P3之火線L和水線N導通，若該三相交流電源之第三相交流電源P3出現異常，則該第二切換開關20之輸出端3C和4C分別與該三相交流電源之第一相交流電源P1之火線L和水線N導通。參考表一，為該三相交流電源中各相交流電源工作狀態與該第二切換開關20之輸出對應關係。The working process of the three-phase AC power switching circuit is as follows: when the first phase AC power P1 of the three-phase AC power supply is normally powered, the output terminals 1C and 2C of the first switching switch 10 and the three-phase AC power supply respectively The live line L and the water line N of the one-phase AC power source P1 are turned on, and are connected to the second switch 20, and if the third-phase AC power source P3 of the three-phase AC power source is normally powered, the second switch 20 is The output terminals 3C and 4C are respectively connected to the live line L and the water line N of the third-phase AC power source P3 of the three-phase AC power source. If the third phase AC power source P3 of the three-phase AC power source is abnormal, the second switch The output terminals 3C and 4C of 20 are respectively electrically connected to the live line L and the water line N of the first phase AC power source P1 of the three-phase AC power source. Referring to Table 1, the AC power supply operating state of each phase in the three-phase AC power supply corresponds to the output of the second switching switch 20.
該三相交流電源切換電路透過切換開關10和20實現了三相交流電源之輸出自動切換，在該三相交流電源之一相或兩相電源出現異常時在第二切換開關20之輸出端3C和4C上維持穩定之交流電壓輸出，藉此，為用電器內部之交流/直流轉換電路提供穩定之交流電源輸入，保證用電器穩定工作。The three-phase AC power switching circuit realizes automatic switching of the output of the three-phase AC power through the switching switches 10 and 20. When the one phase of the three-phase AC power source or the two-phase power source is abnormal, the output terminal of the second switching switch 20 is 3C. And maintain a stable AC voltage output on the 4C, thereby providing a stable AC power input for the internal AC/DC conversion circuit of the electric appliance to ensure stable operation of the electric appliance.
綜上所述，本發明符合發明專利要件，爰依法提出專利申請。惟，以上所述者僅為本發明之較佳實施例，舉凡熟悉本案技藝之人士，在爰依本發明精神所作之等效修飾或變化，皆應涵蓋於以下之申請專利範圍內。In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.
第一相交流電源．．．P1First phase AC power. . . P1
第二相交流電源．．．P2Second phase AC power supply. . . P2
第三相交流電源．．．P3Third phase AC power supply. . . P3
第一切換開關．．．10The first switch. . . 10
第二切換開關．．．20The second switch. . . 20
火線．．．LFire line. . . L
水線．．．NWater line. . . N
第一通道．．．12、22The first channel. . . 12, 22
第二通道．．．14、24Second channel. . . 14, 24
控制線圈．．．16、26Control coil. . . 16,26
圖1係本發明三相交流電源切換電路較佳實施方式之電路圖。1 is a circuit diagram of a preferred embodiment of a three-phase alternating current power supply switching circuit of the present invention.
第一相交流電源．．．P1First phase AC power. . . P1
第二相交流電源．．．P2Second phase AC power supply. . . P2
第三相交流電源．．．P3Third phase AC power supply. . . P3
第一切換開關．．．10The first switch. . . 10
第二切換開關．．．20The second switch. . . 20
火線．．．LFire line. . . L
水線．．．NWater line. . . N
第一通道．．．12、22The first channel. . . 12, 22
第二通道．．．14、24Second channel. . . 14, 24
控制線圈．．．16、26Control coil. . . 16,26
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| Application Number | Priority Date | Filing Date | Title |
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| TW96147912A TWI399025B (en) | 2007-12-14 | 2007-12-14 | Switch circuit of three-phase alternating-current power supply |
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| TW96147912A TWI399025B (en) | 2007-12-14 | 2007-12-14 | Switch circuit of three-phase alternating-current power supply |
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| TW200926566A TW200926566A (en) | 2009-06-16 |
| TWI399025B true TWI399025B (en) | 2013-06-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4667264A (en) * | 1983-08-16 | 1987-05-19 | Ebara Corporation | Apparatus for controlling the starting of a three phase load with its normal phase sequence |
| TW199231B (en) * | 1991-02-01 | 1993-02-01 | Ngk Insulators Ltd | |
| CN2506011Y (en) * | 2001-09-11 | 2002-08-14 | 哈尔滨市康达空调设备有限公司 | Three phase AC power source phase sequence automatic monitoring device |
| CN2596659Y (en) * | 2002-12-26 | 2003-12-31 | 郭树 | Three phase power constant phase sequence protector |
| CN2741257Y (en) * | 2004-07-14 | 2005-11-16 | 中国洛阳浮法玻璃集团有限责任公司 | Double power supply switching controller with phase-off protector |
-
2007
- 2007-12-14 TW TW96147912A patent/TWI399025B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4667264A (en) * | 1983-08-16 | 1987-05-19 | Ebara Corporation | Apparatus for controlling the starting of a three phase load with its normal phase sequence |
| TW199231B (en) * | 1991-02-01 | 1993-02-01 | Ngk Insulators Ltd | |
| CN2506011Y (en) * | 2001-09-11 | 2002-08-14 | 哈尔滨市康达空调设备有限公司 | Three phase AC power source phase sequence automatic monitoring device |
| CN2596659Y (en) * | 2002-12-26 | 2003-12-31 | 郭树 | Three phase power constant phase sequence protector |
| CN2741257Y (en) * | 2004-07-14 | 2005-11-16 | 中国洛阳浮法玻璃集团有限责任公司 | Double power supply switching controller with phase-off protector |
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| TW200926566A (en) | 2009-06-16 |
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