CN105892539A - Two-wire system electric voltage regulator - Google Patents
Two-wire system electric voltage regulator Download PDFInfo
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- CN105892539A CN105892539A CN201610403336.1A CN201610403336A CN105892539A CN 105892539 A CN105892539 A CN 105892539A CN 201610403336 A CN201610403336 A CN 201610403336A CN 105892539 A CN105892539 A CN 105892539A
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- 238000011056 performance test Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is AC
- G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using tap transformers or tap changing inductors as final control devices
- G05F1/147—Regulating voltage or current wherein the variable actually regulated by the final control device is AC using tap transformers or tap changing inductors as final control devices with motor driven tap switch
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- Automation & Control Theory (AREA)
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
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Abstract
本发明公开了一种二线制电动调压器，由调压器本体、调压片、直流电机、上限位开关、下限位开关、第一二极管、第二二极管组成，其特征在于：调压片设在调压器本体上，由直流电机驱动，上、下限位开关分别设于调压片转动的上、下极限位置；上限位开关第二接线端作为第一外部接线端，且与第二二极管负极并联；上限位开关第一接线端与第二二极管正极并联，接入到直流电机第一电源端；下限位开关第一接线端作为第二外部接线端，且与第一二极管负极并联；下限位开关第二接线端与第一二极管正极并联，接入到直流电机第二电源端；上、下限位开关均为常闭式。本发明，具有结构简单、接线数量少、可靠性高、低成本等特点，能减轻布线工作量，减少PLCI/O接口使用量，提高系统稳定性，降低成本。
The invention discloses a two-wire electric voltage regulator, which is composed of a voltage regulator body, a voltage regulating plate, a DC motor, an upper limit switch, a lower limit switch, a first diode and a second diode, and is characterized in that : The pressure regulator is set on the body of the voltage regulator, driven by a DC motor, and the upper and lower limit switches are respectively set at the upper and lower limit positions of the pressure regulator; the second terminal of the upper limit switch is used as the first external terminal, And connected in parallel with the negative pole of the second diode; the first terminal of the upper limit switch is connected in parallel with the positive pole of the second diode, and connected to the first power supply terminal of the DC motor; the first terminal of the lower limit switch is used as the second external terminal, The second terminal of the lower limit switch is connected in parallel with the positive pole of the first diode, and is connected to the second power supply terminal of the DC motor; both the upper and lower limit switches are normally closed. The invention has the characteristics of simple structure, less wiring, high reliability, low cost, etc., can reduce wiring workload, reduce PLCI/O interface usage, improve system stability, and reduce cost.
Description
技术领域 technical field
本发明涉及一种调压器，尤其涉及一种采用电控方式的调压器。 The invention relates to a voltage regulator, in particular to an electronically controlled voltage regulator.
背景技术 Background technique
在家电产品性能测试中，经常需要采用调压器，以测试家电产品在不同恶劣工作电压情况下的产品性能状况。且能提供正弦可调电压的电动调压器，在家电产品测试过程中，应用广泛。现有的变频电源，虽能提供正弦可调电压，具有电动调压器功能，但因价格过高，未能广泛应用。 In the performance test of home appliances, it is often necessary to use voltage regulators to test the performance of home appliances under different severe working voltage conditions. And the electric voltage regulator that can provide sinusoidal adjustable voltage is widely used in the testing process of household appliances. Although the existing variable frequency power supply can provide sinusoidal adjustable voltage and has the function of electric voltage regulator, it is not widely used because of its high price.
现有的电动调压器，其工作主要的方式是利用直流电机来动旋转片，来调节副边输出电压大小的，为了防止直流电机转动超过上下限死点，特设上限位开关和下限位开关。这种控制方式，通常需要至少5根外接导线，连到相应的控制系统才能实现，即，其中直流电机电源需要2根导线，上限位开关和下限位开关至少需要3根（可共一根地线）。当测试系统需要多台调压器时，如N台电动调压器，这种电动调压器控制线路至少需要5N根导线，布线工作量非常大，系统稳定性较差，且占用了较多的PLC的I/O接口，增加了成本。 The main working method of the existing electric voltage regulator is to use the DC motor to move the rotating plate to adjust the output voltage of the secondary side. In order to prevent the DC motor from rotating beyond the upper and lower limit dead points, an upper limit switch and a lower limit switch switch. This control method usually requires at least 5 external wires to be connected to the corresponding control system to realize, that is, the DC motor power supply needs 2 wires, and the upper limit switch and the lower limit switch need at least 3 wires (there can be a common ground) Wire). When the test system requires multiple voltage regulators, such as N electric voltage regulators, the electric voltage regulator control circuit needs at least 5N wires, the wiring workload is very large, the system stability is poor, and it takes up a lot of space. The I/O interface of the PLC increases the cost.
发明内容 Contents of the invention
本发明的实施例目的在于提供一种二线制电动调压器，具有结构简单、接线数量少、可靠性高、低成本等特点，以减轻布线工作量，减少PLC的I/O接口使用量，在提高家电产品性能测试系统可靠性的同时，降低相应地成本。 The purpose of the embodiments of the present invention is to provide a two-wire electric voltage regulator, which has the characteristics of simple structure, less wiring, high reliability, and low cost, so as to reduce the workload of wiring and reduce the usage of I/O interfaces of PLC. While improving the reliability of the home appliance product performance testing system, the corresponding cost is reduced.
为达到上述目的，本发明的实施例采用如下技术方案： In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:
一种二线制电动调压器，由调压器本体、调压片、直流电机、上限位开关、下限位开关、第一二极管、第二二极管组成，其特征在于：所述的调压片设在调压器本体上，由直流电机驱动，上、下限位开关分别设于调压片转动的上、下极限位置；上限位开关第二接线端作为第一外部接线端，且与第二二极管负极并联；上限位开关第一接线端与第二二极管正极并联，接入到直流电机第一电源端；下限位开关第一接线端作为第二外部接线端，且与第一二极管负极并联；下限位开关第二接线端与第一二极管正极并联，接入到直流电机第二电源端；上、下限位开关均为常闭式。 A two-wire electric voltage regulator, consisting of a voltage regulator body, a voltage regulator, a DC motor, an upper limit switch, a lower limit switch, a first diode, and a second diode, characterized in that: the The pressure regulating plate is set on the body of the voltage regulator, driven by a DC motor, and the upper and lower limit switches are respectively set at the upper and lower limit positions of the pressure regulating plate; the second terminal of the upper limit switch is used as the first external terminal, and It is connected in parallel with the negative pole of the second diode; the first terminal of the upper limit switch is connected in parallel with the positive pole of the second diode, and connected to the first power supply terminal of the DC motor; the first terminal of the lower limit switch is used as the second external terminal, and It is connected in parallel with the negative pole of the first diode; the second terminal of the lower limit switch is connected in parallel with the positive pole of the first diode, and connected to the second power supply terminal of the DC motor; both the upper and lower limit switches are normally closed.
作为优化，一种二线制电动调压器测试系统，其特征在于：由若干个二线制电动调压器组成，将每个二线制电动调压器的第二外部接线端，并联连接。 As an optimization, a two-wire electric voltage regulator testing system is characterized in that it is composed of several two-wire electric voltage regulators, and the second external terminals of each two-wire electric voltage regulator are connected in parallel.
本发明的工作原理：为了便于说明，假设，直流电机的第一电源端、第二电源端分别接入正、负电时，直流电机正转，转动幅度越大，输出电压越大，且初始状态为：第一外部接线端、第二外部接线端分别通入正、负电。在正常调压范围内，直流电机，可通过均为常闭的上限位开关、下限位开关供电而转动。当调压器达到上限时，此时，上限位开关动作，即由闭合变成断开，而此时第二二极管处于截止状态，直流电，无法从第一外部接线端导入直流电机的第一电源端，而使得直流电机停止转动，实现上限保护。当上限保护时，直流电机不可能正向转动增加电压，而只能反转，调小电压，此时供电第一外部接线端、第二外部接线端分别通入负、正电，电流分别依次通过下限位开关、直流电机的第二电源端、第一电源端、第二二极管流出，直流电机反转，当脱离上限点后，就恢复到正常工作范围。 The working principle of the present invention: for the convenience of explanation, it is assumed that when the first power supply terminal and the second power supply terminal of the DC motor are respectively connected to positive and negative power, the DC motor rotates forward, the greater the rotation range, the greater the output voltage, and the initial state The method is: the first external terminal and the second external terminal are connected to positive and negative electricity respectively. Within the normal voltage regulation range, the DC motor can be powered by the normally closed upper limit switch and lower limit switch to rotate. When the voltage regulator reaches the upper limit, at this time, the upper limit switch acts, that is, from closed to open, and at this time the second diode is in the cut-off state, and the direct current cannot be introduced from the first external terminal to the second DC motor. A power supply end, so that the DC motor stops rotating, and the upper limit protection is realized. When the upper limit is protected, the DC motor cannot rotate forward to increase the voltage, but can only be reversed to reduce the voltage. At this time, the first external terminal and the second external terminal of the power supply are respectively connected to negative and positive electricity, and the currents are respectively in turn. Through the lower limit switch, the second power supply end, the first power supply end, and the second diode of the DC motor flow out, the DC motor reverses, and when the upper limit point is broken, it returns to the normal working range.
显然，当测试系统需要多台电动调压器时，如N台电动调压器时，本发明提供的电动调压器，其外接的控制线路则只需2N根导线，外接导线数量的减少，不仅有利于提高系统的稳定性，而且还能较少外部控制器的控制口数量，如PLC的I/O接口。特别地，当电动调压器数量较多且不同时调压的情况下，还可以将本发明提供的二线制电动调压器的第二外部接线端，并联连接，此时，可进一步节约导线，如N台电动调压器只需N+1根导线。 Obviously, when the test system needs multiple electric voltage regulators, such as N electric voltage regulators, the electric voltage regulator provided by the present invention only needs 2N wires for the external control circuit, and the reduction of the number of external wires, Not only is it beneficial to improve the stability of the system, but it can also reduce the number of control ports of the external controller, such as the I/O interface of the PLC. In particular, when the number of electric voltage regulators is large and the voltage is not adjusted at the same time, the second external terminal of the two-wire electric voltage regulator provided by the present invention can also be connected in parallel. At this time, the wire can be further saved , such as N electric voltage regulators only need N+1 wires.
本发明提供的一种二线制电动调压器，采用了两线制控制方式，实现了单个电动调压器，由之前需外接5根控制线，变成只需外接2根控制线的控制方式。与现有技术相比，本发明，具有结构简单、接线数量少、可靠性高、低成本等特点，能够有效地减轻布线工作量，减少PLC的I/O接口使用量，提高系统稳定性，降低相应地成本。 A two-wire electric voltage regulator provided by the present invention adopts a two-wire control method to realize a single electric voltage regulator. Instead of needing to connect 5 external control wires before, it becomes a control method that only needs to connect 2 external control wires. . Compared with the prior art, the present invention has the characteristics of simple structure, less wiring, high reliability, low cost, etc., can effectively reduce the workload of wiring, reduce the usage of I/O interface of PLC, and improve the stability of the system. Reduce costs accordingly.
附图说明 Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。 In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1 为本发明实施例中的二线制电动调压器原理图； Fig. 1 is the schematic diagram of the two-wire electric voltage regulator in the embodiment of the present invention;
图2为本发明实施例中的控制电路原理图； Fig. 2 is the schematic diagram of the control circuit in the embodiment of the present invention;
图3为本发明实施例中的二线制电动调压器测试系统的控制电路原理图； Fig. 3 is the schematic diagram of the control circuit of the two-wire electric voltage regulator test system in the embodiment of the present invention;
图中：10—调压平；M—直流电机；T—调压器本体；SQ2—上限位开关；SQ1—下限位开关；VD1—第一二极管；VD2—第二二极管。 In the figure: 10—voltage regulating level; M—DC motor; T—voltage regulator body; SQ2—upper limit switch; SQ1—lower limit switch; VD1—first diode; VD2—second diode.
具体实施方式 detailed description
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。 The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
一种二线制电动调压器，由调压器本体T、调压片10、直流电机M、上限位开关SQ2、下限位开关SQ1、第一二极管VD1、第二二极管VD2组成，其特征在于：所述的调压片10设在调压器本体T上，由直流电机M驱动，上限位开关SQ2、下限位开关SQ1分别设于调压片10转动的上、下极限位置； A two-wire electric voltage regulator, consisting of a voltage regulator body T, a voltage regulating plate 10, a DC motor M, an upper limit switch SQ2, a lower limit switch SQ1, a first diode VD1, and a second diode VD2, It is characterized in that: the pressure regulator 10 is set on the voltage regulator body T, driven by a DC motor M, the upper limit switch SQ2 and the lower limit switch SQ1 are respectively set at the upper and lower limit positions of the pressure regulator 10 rotation;
上限位开关SQ2的第二接线端22与第二二极管VD2的负极并联后，作为第一外部接线端；上限位开关SQ2的第一接线端21与第二二极管VD2的正极并联后，接入到直流电机M的第一电源端； After the second terminal 22 of the upper limit switch SQ2 is connected in parallel with the negative pole of the second diode VD2, it is used as the first external terminal; after the first terminal 21 of the upper limit switch SQ2 is connected in parallel with the positive pole of the second diode VD2 , connected to the first power terminal of the DC motor M;
下限位开关SQ1的第一接线端11与第一二极管VD1的负极并联后，作为第二外部接线端；下限位开关SQ1的第二接线端12与第一二极管VD1的正极并联后，接入到直流电机M的第二电源端；上限位开关SQ2、下限位开关SQ1均为常闭式限位开关。 After the first terminal 11 of the lower limit switch SQ1 is connected in parallel with the negative pole of the first diode VD1, it is used as the second external terminal; after the second terminal 12 of the lower limit switch SQ1 is connected in parallel with the positive pole of the first diode VD1 , connected to the second power terminal of the DC motor M; the upper limit switch SQ2 and the lower limit switch SQ1 are both normally closed limit switches.
如图3所示，当电动调压器数量较多且不同时调压的情况下，还可以将多个二线制电动调压器的第二外部接线端，并联连接，此时，可进一步节约导线，如N台电动调压器只需N+1根导线。 As shown in Figure 3, when the number of electric voltage regulators is large and the voltage is not adjusted at the same time, the second external terminals of multiple two-wire electric voltage regulators can also be connected in parallel. At this time, further saving Wires, such as N electric voltage regulators only need N+1 wires.
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。 The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.
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| CN204990052U (en) * | 2015-08-22 | 2016-01-20 | 滁州职业技术学院 | A two-wire electric voltage regulator |
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| Publication number | Publication date |
|---|---|
| CN105068588B (en) | 2016-05-25 |
| CN105068588A (en) | 2015-11-18 |
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Application publication date: 20160824 |