CN220291897U - Main power supply input loop of servo motor driver - Google Patents
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- CN220291897U CN220291897U CN202321614956.1U CN202321614956U CN220291897U CN 220291897 U CN220291897 U CN 220291897U CN 202321614956 U CN202321614956 U CN 202321614956U CN 220291897 U CN220291897 U CN 220291897U
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Abstract
The application discloses a main power input loop of a servo motor driver. The three-phase rectifier bridge comprises a wiring terminal connector J1, a three-phase rectifier bridge D and a direct current bus capacitor C1; the first terminal, the second terminal and the third terminal of the wiring terminal connector J1 are respectively and electrically connected with three phase lines of a three-phase alternating current power supply; three power input ends of the three-phase rectifier bridge D are respectively and electrically connected with a first terminal, a second terminal and a third terminal of the J1; the output negative end of the three-phase rectifier bridge D is electrically connected with the fourth terminal of the J1, and the output positive end of the three-phase rectifier bridge D is electrically connected with the fifth terminal of the J1 through the direct current bus capacitor C1; the fifth terminal of J1 is electrically connected to the neutral line of the three-phase ac power supply. The voltage at two ends of the direct current bus capacitor C1 can be 311V direct current bus voltage which is output after alternating current 220V is subjected to half-wave rectification without setting a transformer, and the volume and cost of a main power input loop of the servo motor driver are reduced.
Description
Technical Field
The application relates to the technical field of servo systems, in particular to a main power input loop of a servo motor driver.
Background
In industrial servo systems, the laser cutting industry typically uses 220V servo drives and 220V servo motors.
When a servo system is built, as shown in fig. 1, the three-phase 380V needs to be converted into three-phase 220V through a transformer, then 311V direct current bus voltage is rectified and output, and then the three-phase 380V direct current bus voltage is connected into a 220V servo motor through an inverter at the rear end, so that power supply for the servo motor is realized.
The inventors have realized that such a design, which at present necessitates the provision of a transformer, inevitably results in an increase in the volume and cost of the main power input circuit of the servo motor driver. Therefore, it is necessary and practical to study a main power input circuit of a servo motor driver capable of directly accessing three-phase 380V without a transformer.
Disclosure of Invention
Therefore, the application provides a main power input loop of a servo motor driver, so as to solve the technical problems that when a servo system is built at present, a transformer is required to be arranged to convert three-phase 380V into three-phase 220V, and the size and cost of the main power input loop of the servo motor driver are increased.
In order to achieve the above object, the present application provides the following technical solutions:
in a first aspect, a main power input loop of a servo motor driver includes a connection terminal connector J1, a three-phase rectifier bridge D, and a dc bus capacitor C1;
the first terminal, the second terminal and the third terminal of the wiring terminal connector J1 are respectively and electrically connected with three phase lines of a three-phase alternating current power supply; the three-way power input end of the three-phase rectifier bridge D is respectively and electrically connected with the first terminal, the second terminal and the third terminal of the wiring terminal connector J1; the output negative end of the three-phase rectifier bridge D is electrically connected with the fourth terminal of the wiring terminal connector J1, and the output positive end of the three-phase rectifier bridge D is electrically connected with the fifth terminal of the wiring terminal connector J1 through the direct-current bus capacitor C1; the fifth terminal of the wiring terminal connector J1 is electrically connected with the neutral line of the three-phase alternating current power supply.
Optionally, the three-phase rectifier bridge D includes a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, and a diode D6; the anode of the diode D1 is electrically connected with the cathode of the diode D2, and the anode of the diode D1 is also electrically connected with the first terminal of the wiring terminal connector J1; the anode of the diode D3 is electrically connected with the cathode of the diode D4, and the anode of the diode D3 is also electrically connected with the second terminal of the wiring terminal connector J1; the anode of the diode D5 is electrically connected with the cathode of the diode D6, and the anode of the diode D5 is also electrically connected with the third terminal of the wiring terminal connector J1;
the anode of the diode D2, the anode of the diode D4 and the anode of the diode D6 are electrically connected with the fourth terminal of the wiring terminal connector J1; the cathode of the diode D1, the cathode of the diode D3 and the cathode of the diode D5 are electrically connected with the fifth terminal of the connection terminal connector J1 through the dc bus capacitor C1.
Optionally, the capacitance of the dc bus capacitor C1 is 1000uF to 4000uF.
Optionally, the sixth terminal of the connection terminal connector J1 is electrically connected to the ground of the three-phase ac power supply.
In a second aspect, a main power input loop of a servo motor driver includes a connection terminal connector J1, a three-phase rectifier bridge D, and a dc bus capacitor C1;
the first terminal, the second terminal and the third terminal of the wiring terminal connector J1 are respectively and electrically connected with three voltage output ends of a transformer T, and three voltage input ends of the transformer T are respectively and electrically connected with three phase lines of a three-phase alternating current power supply; the three-way power input end of the three-phase rectifier bridge D is respectively and electrically connected with the first terminal, the second terminal and the third terminal of the wiring terminal connector J1; the output negative end of the three-phase rectifier bridge D is electrically connected with the fourth terminal of the wiring terminal connector J1, and the output positive end of the three-phase rectifier bridge D is electrically connected with the fifth terminal of the wiring terminal connector J1 through the direct-current bus capacitor C1; the fourth terminal of the wiring terminal connector J1 is electrically connected with the fifth terminal; the sixth terminal of the connecting terminal connector J1 is electrically connected with the ground wire of the three-phase alternating current power supply.
Optionally, the three-phase rectifier bridge D includes a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, and a diode D6; the anode of the diode D1 is electrically connected with the cathode of the diode D2, and the anode of the diode D1 is also electrically connected with the first terminal of the wiring terminal connector J1; the anode of the diode D3 is electrically connected with the cathode of the diode D4, and the anode of the diode D3 is also electrically connected with the second terminal of the wiring terminal connector J1; the anode of the diode D5 is electrically connected with the cathode of the diode D6, and the anode of the diode D5 is also electrically connected with the third terminal of the wiring terminal connector J1;
the anode of the diode D2, the anode of the diode D4 and the anode of the diode D6 are electrically connected with the fourth terminal of the wiring terminal connector J1; the cathode of the diode D1, the cathode of the diode D3 and the cathode of the diode D5 are electrically connected with the fifth terminal of the connection terminal connector J1 through the dc bus capacitor C1.
Optionally, the capacitance of the dc bus capacitor C1 is 1000uF to 4000uF.
Optionally, the sixth terminal of the connection terminal connector J1 is electrically connected to the ground of the three-phase ac power supply.
Compared with the prior art, the application has the following beneficial effects:
the embodiment of the application provides a new hardware architecture of a main power input loop of a servo motor driver; the wiring mode of utilizing the characteristic of phase voltage is adopted, three phase lines of a three-phase alternating current power supply are respectively and electrically connected with three power input ends of a three-phase rectifier bridge D through a first terminal, a second terminal and a third terminal of a wiring terminal connector J1, meanwhile, the output negative terminal of the three-phase rectifier bridge D is electrically connected with a fourth terminal of the wiring terminal connector J1, the output positive terminal of the three-phase rectifier bridge D is electrically connected with a fifth terminal of the wiring terminal connector J1 through a direct current bus capacitor C1, and the fifth terminal of the wiring terminal connector J1 is electrically connected with a neutral line of the three-phase alternating current power supply, so that voltages at two ends of the direct current bus capacitor C1 are 311V direct current bus voltages which are output after alternating current 220V is subjected to half-wave rectification; and then the power supply can be realized by connecting a 220V servo motor after passing through an inverter at the rear end; the main power input loop utilizes the characteristic that the voltage (phase voltage) between the L1 phase line, the L2 phase line and the L3 phase line is 220V, and a transformer for converting three-phase 380V into three-phase 220V is not needed to be arranged, so that the voltage at two ends of a direct current bus capacitor C1 can be 311V direct current bus voltage which is output after alternating current 220V is subjected to half-wave rectification; the transformer is omitted, and the volume and cost of a main power input loop of the servo motor driver are reduced.
Drawings
For a more visual illustration of the prior art and the present application, several exemplary drawings are presented below. It should be understood that the specific shape and configuration shown in the drawings should not be considered in general as limiting upon the practice of the present application; for example, based on the technical concepts and exemplary drawings disclosed herein, those skilled in the art have the ability to easily make conventional adjustments or further optimizations for the add/subtract/assign division, specific shapes, positional relationships, connection modes, dimensional scaling relationships, etc. of certain units (components).
FIG. 1 is a schematic diagram of a main power input circuit of a conventional servo motor driver;
FIG. 2 is a schematic diagram of a main power input circuit of a servo motor driver according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a main power input circuit of a servo motor driver according to a second embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a main power input circuit of a servo motor driver according to a third embodiment of the present application.
Detailed Description
The present application is further described in detail below with reference to the attached drawings.
In the description of the present application: unless otherwise indicated, the meaning of "a plurality" is two or more. The terms "first," "second," "third," and the like in this application are intended to distinguish between the referenced objects without a special meaning in terms of technical connotation (e.g., should not be construed as emphasis on degree or order of importance, etc.). The expressions "comprising", "including", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).
The terms such as "upper", "lower", "left", "right", "middle", and the like, as referred to in this application, are generally used for convenience in visual understanding with reference to the drawings, and are not intended to be an absolute limitation of the positional relationship in actual products. Such changes in relative positional relationship are considered to be within the scope of the present description without departing from the technical concepts disclosed herein.
Example 1
In this embodiment, there is provided a main power input circuit of a servo motor driver, as shown in fig. 2, which includes a connection terminal connector J1, a three-phase rectifier bridge D, and a dc bus capacitor C1;
the first terminal (R end), the second terminal (S end) and the third terminal (T end) of the wiring terminal connector J1 are respectively and electrically connected with three phase lines (L1 line, L2 line and L3 line) of a three-phase alternating current power supply; the three-way power input end of the three-phase rectifier bridge D is respectively and electrically connected with the first terminal, the second terminal and the third terminal of the wiring terminal connector J1; the output negative end of the three-phase rectifier bridge D is electrically connected with the fourth terminal (N0 end) of the wiring terminal connector J1, and the output positive end of the three-phase rectifier bridge D is electrically connected with the fifth terminal (N end) of the wiring terminal connector J1 through the direct-current bus capacitor C1; the fifth terminal of the connection terminal connector J1 is electrically connected to a neutral line (N line) of the three-phase ac power supply.
Further, the three-phase rectifier bridge D includes a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, and a diode D6; the anode of the diode D1 is electrically connected with the cathode of the diode D2, and the anode of the diode D1 is also electrically connected with the first terminal of the wiring terminal connector J1; the anode of the diode D3 is electrically connected with the cathode of the diode D4, and the anode of the diode D3 is also electrically connected with the second terminal of the wiring terminal connector J1; the anode of the diode D5 is electrically connected with the cathode of the diode D6, and the anode of the diode D5 is also electrically connected with the third terminal of the wiring terminal connector J1;
the anode of the diode D2, the anode of the diode D4 and the anode of the diode D6 are electrically connected with the fourth terminal of the wiring terminal connector J1; the cathode of the diode D1, the cathode of the diode D3 and the cathode of the diode D5 are electrically connected to the fifth terminal of the connection terminal connector J1 through the dc bus capacitor C1.
Further, the capacitance of the dc bus capacitor C1 can be adjusted according to different powers, and is typically 1000uF-4000uF.
Further, the sixth terminal (PE end) of the connection terminal connector J1 is electrically connected to the ground (PE line) of the three-phase ac power supply.
In general, it is known that the voltage between phase lines (line voltage) of the civil industrial power system in China is 380V, and the voltage between phase line and neutral line (i.e. neutral line) is 220V; that is, in fig. 2, the voltages (line voltages) between the L1, L2, and L3 phase lines are 380V, and the voltages (phase voltages) between the L1, L2, and L3 phase lines and the N neutral line, that is, the neutral line are 220V.
Based on this, in the embodiment of the application, a new hardware architecture of a main power input loop of a servo motor driver is provided; the wiring mode of utilizing the characteristic of phase voltage is adopted, three phase lines of a three-phase alternating current power supply are respectively and electrically connected with three power input ends of a three-phase rectifier bridge D through a first terminal, a second terminal and a third terminal of a wiring terminal connector J1, meanwhile, the output negative terminal of the three-phase rectifier bridge D is electrically connected with a fourth terminal of the wiring terminal connector J1, the output positive terminal of the three-phase rectifier bridge D is electrically connected with a fifth terminal of the wiring terminal connector J1 through a direct current bus capacitor C1, and the fifth terminal of the wiring terminal connector J1 is electrically connected with a neutral line of the three-phase alternating current power supply, so that voltages at two ends of the direct current bus capacitor C1 are 311V direct current bus voltages which are output after alternating current 220V is subjected to half-wave rectification; and then the power supply can be connected with a 220V servo motor after passing through an inverter at the rear end (converting back to 220V alternating voltage), so that the power supply for the servo motor is realized. The circuits such as the inverter at the rear end of the main power input loop are of the conventional circuit structure, and are not described herein.
Therefore, the hardware architecture of the main power supply input loop of the servo motor driver provided by the application utilizes the characteristic of phase voltage, and changes the wiring mode based on the structure of the existing main power supply input loop; the key point is that the N0 end (fourth terminal) and the N end (fifth terminal) of the wiring terminal connector J1 are additionally utilized, the characteristic that the voltage (phase voltage) between the L1 phase line, the L2 phase line and the L3 phase line is 220V is utilized, a transformer for converting three-phase 380V into three-phase 220V is not needed, and the voltage at the two ends of the direct current bus capacitor C1 can be 311V direct current bus voltage which is output after alternating current 220V is subjected to half-wave rectification; the transformer is omitted, and the volume and cost of a main power input loop of the servo motor driver are reduced.
Example two
In the present embodiment, there is provided a main power input circuit of another servo motor driver, which includes a connection terminal connector J1, a three-phase rectifier bridge D, and a dc bus capacitor C1, as shown in fig. 3;
the first terminal (R end), the second terminal (S end) and the third terminal (T end) of the wiring terminal connector J1 are respectively and electrically connected with three voltage output ends of a transformer T, and three voltage input ends of the transformer T are respectively and electrically connected with three phase lines (L1 line, L2 line and L3 line) of a three-phase alternating current power supply; the three-way power input end of the three-phase rectifier bridge D is respectively and electrically connected with the first terminal, the second terminal and the third terminal of the wiring terminal connector J1; the output negative end of the three-phase rectifier bridge D is electrically connected with the fourth terminal (N0 end) of the wiring terminal connector J1, and the output positive end of the three-phase rectifier bridge D is electrically connected with the fifth terminal (N end) of the wiring terminal connector J1 through the direct-current bus capacitor C1; the fourth terminal of the connecting terminal connector J1 is electrically connected with the fifth terminal.
Further, the three-phase rectifier bridge D includes a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, and a diode D6; the anode of the diode D1 is electrically connected with the cathode of the diode D2, and the anode of the diode D1 is also electrically connected with the first terminal of the wiring terminal connector J1; the anode of the diode D3 is electrically connected with the cathode of the diode D4, and the anode of the diode D3 is also electrically connected with the second terminal of the wiring terminal connector J1; the anode of the diode D5 is electrically connected with the cathode of the diode D6, and the anode of the diode D5 is also electrically connected with the third terminal of the wiring terminal connector J1;
the anode of the diode D2, the anode of the diode D4 and the anode of the diode D6 are electrically connected with the fourth terminal of the wiring terminal connector J1; the cathode of the diode D1, the cathode of the diode D3 and the cathode of the diode D5 are electrically connected to the fifth terminal of the connection terminal connector J1 through the dc bus capacitor C1.
Further, the capacitance of the dc bus capacitor C1 can be adjusted according to different powers, and is typically 1000uF-4000uF.
Further, the sixth terminal (PE end) of the connection terminal connector J1 is electrically connected to the ground (PE line) of the three-phase ac power supply.
In general, in the embodiments of the present application, a new hardware architecture of a main power input loop of a servo motor driver is provided, which is capable of being compatible with a servo system of an existing three-phase 380V to three-phase 220V transformer; the three phase lines of a three-phase alternating current power supply are electrically connected with three voltage output ends of a transformer T through a first terminal, a second terminal and a third terminal of a wiring terminal connector J1 respectively, the three voltage input ends of the transformer T are electrically connected with the three phase lines of the three-phase alternating current power supply respectively, the transformer T is used for converting three-phase 380V into three-phase 220V, the output negative end of a three-phase rectifier bridge D is electrically connected with a fourth terminal of the wiring terminal connector J1, the output positive end of the three-phase rectifier bridge D is electrically connected with a fifth terminal of the wiring terminal connector J1 through a direct current bus capacitor C1, and the fourth terminal (N0 end) of the wiring terminal connector J1 is in short circuit with the fifth terminal (N end), so that the voltage at two ends of the direct current bus capacitor C1 is 311V direct current bus voltage which is output after alternating current 220V is rectified by a full bridge; and then the power supply can be connected with a 220V servo motor after passing through an inverter at the rear end (converting back to 220V alternating voltage), so that the power supply for the servo motor is realized. The circuits such as the inverter at the rear end of the main power input loop are of the conventional circuit structure, and are not described herein.
Example III
In this embodiment, there is provided a main power input circuit of a servo motor driver, as shown in fig. 4, the main power input circuit includes a connection terminal connector J1, a three-phase rectifier bridge, and a dc bus capacitor C1; the wiring terminal connector J1 comprises R, S, T, N and N, PE, the three-phase rectifier bridge comprises D1, D2, D3, D4, D5 and D6, and the direct current bus capacitor comprises C1.
The key point is that N0 and N are connected to the wiring terminals, and the main power input loop of the servo motor driver can be compatible with two voltage systems of three-phase 380V and three-phase 220V in an external wiring mode.
If the three-phase 380V power supply is connected, the complete structure is shown in fig. 2, the N end of the wiring terminal connector J1 is connected with the neutral line of the three-phase alternating current power supply, and the N0 end is not connected, so that the cost of the transformer for converting the three-phase 380V into the three-phase 220V is saved for the 220V servo driving system. If the three-phase 220V power supply is connected, the complete structure is shown in fig. 3, and the N0 end and the N end of the wiring terminal connector J1 are short-circuited.
In other words, the main power input loop of the servo motor driver can be connected into three-phase 380V or 220V through two wiring methods.
Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all of the possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.
The foregoing has outlined and detailed description of the present application in terms of the general description and embodiments. It should be appreciated that numerous conventional modifications and further innovations may be made to these specific embodiments, based on the technical concepts of the present application; but such conventional modifications and further innovations may be made without departing from the technical spirit of the present application, and such conventional modifications and further innovations are also intended to fall within the scope of the claims of the present application.
Claims (8)
1. The main power input loop of the servo motor driver is characterized by comprising a wiring terminal connector J1, a three-phase rectifier bridge D and a direct current bus capacitor C1;
the first terminal, the second terminal and the third terminal of the wiring terminal connector J1 are respectively and electrically connected with three phase lines of a three-phase alternating current power supply; the three-way power input end of the three-phase rectifier bridge D is respectively and electrically connected with the first terminal, the second terminal and the third terminal of the wiring terminal connector J1; the output negative end of the three-phase rectifier bridge D is electrically connected with the fourth terminal of the wiring terminal connector J1, and the output positive end of the three-phase rectifier bridge D is electrically connected with the fifth terminal of the wiring terminal connector J1 through the direct-current bus capacitor C1; the fifth terminal of the wiring terminal connector J1 is electrically connected with the neutral line of the three-phase alternating current power supply.
2. The main power input loop of a servo motor driver of claim 1, wherein the three-phase rectifier bridge D comprises a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, and a diode D6; the anode of the diode D1 is electrically connected with the cathode of the diode D2, and the anode of the diode D1 is also electrically connected with the first terminal of the wiring terminal connector J1; the anode of the diode D3 is electrically connected with the cathode of the diode D4, and the anode of the diode D3 is also electrically connected with the second terminal of the wiring terminal connector J1; the anode of the diode D5 is electrically connected with the cathode of the diode D6, and the anode of the diode D5 is also electrically connected with the third terminal of the wiring terminal connector J1;
the anode of the diode D2, the anode of the diode D4 and the anode of the diode D6 are electrically connected with the fourth terminal of the wiring terminal connector J1; the cathode of the diode D1, the cathode of the diode D3 and the cathode of the diode D5 are electrically connected with the fifth terminal of the connection terminal connector J1 through the dc bus capacitor C1.
3. The main power input circuit of a servo motor driver of claim 1, wherein the capacitance of the dc bus capacitor C1 is 1000uF-4000uF.
4. The main power input circuit of a servo motor driver of claim 1, wherein a sixth terminal of the terminal connector J1 is electrically connected to a ground of the three-phase ac power supply.
5. The main power input loop of the servo motor driver is characterized by comprising a wiring terminal connector J1, a three-phase rectifier bridge D and a direct current bus capacitor C1;
the first terminal, the second terminal and the third terminal of the wiring terminal connector J1 are respectively and electrically connected with three voltage output ends of a transformer T, and three voltage input ends of the transformer T are respectively and electrically connected with three phase lines of a three-phase alternating current power supply; the three-way power input end of the three-phase rectifier bridge D is respectively and electrically connected with the first terminal, the second terminal and the third terminal of the wiring terminal connector J1; the output negative end of the three-phase rectifier bridge D is electrically connected with the fourth terminal of the wiring terminal connector J1, and the output positive end of the three-phase rectifier bridge D is electrically connected with the fifth terminal of the wiring terminal connector J1 through the direct-current bus capacitor C1; the fourth terminal of the wiring terminal connector J1 is electrically connected with the fifth terminal; the sixth terminal of the connecting terminal connector J1 is electrically connected with the ground wire of the three-phase alternating current power supply.
6. The main power input loop of a servo motor driver of claim 5 wherein the three-phase rectifier bridge D comprises a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, and a diode D6; the anode of the diode D1 is electrically connected with the cathode of the diode D2, and the anode of the diode D1 is also electrically connected with the first terminal of the wiring terminal connector J1; the anode of the diode D3 is electrically connected with the cathode of the diode D4, and the anode of the diode D3 is also electrically connected with the second terminal of the wiring terminal connector J1; the anode of the diode D5 is electrically connected with the cathode of the diode D6, and the anode of the diode D5 is also electrically connected with the third terminal of the wiring terminal connector J1;
the anode of the diode D2, the anode of the diode D4 and the anode of the diode D6 are electrically connected with the fourth terminal of the wiring terminal connector J1; the cathode of the diode D1, the cathode of the diode D3 and the cathode of the diode D5 are electrically connected with the fifth terminal of the connection terminal connector J1 through the dc bus capacitor C1.
7. The main power input circuit of a servo motor driver of claim 5, wherein the capacitance of the dc bus capacitor C1 is 1000uF-4000uF.
8. The main power input circuit of a servo motor driver of claim 5, wherein a sixth terminal of the terminal connector J1 is electrically connected to a ground of the three-phase ac power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321614956.1U CN220291897U (en) | 2023-06-25 | 2023-06-25 | Main power supply input loop of servo motor driver |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321614956.1U CN220291897U (en) | 2023-06-25 | 2023-06-25 | Main power supply input loop of servo motor driver |
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| CN220291897U true CN220291897U (en) | 2024-01-02 |
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| CN202321614956.1U Active CN220291897U (en) | 2023-06-25 | 2023-06-25 | Main power supply input loop of servo motor driver |
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