CN110971175A - Strong-current electrifying circuit, control method and servo driver - Google Patents
Strong-current electrifying circuit, control method and servo driver Download PDFInfo
- Publication number
- CN110971175A CN110971175A CN201911214516.5A CN201911214516A CN110971175A CN 110971175 A CN110971175 A CN 110971175A CN 201911214516 A CN201911214516 A CN 201911214516A CN 110971175 A CN110971175 A CN 110971175A
- Authority
- CN
- China
- Prior art keywords
- circuit
- control
- resistor
- terminal
- braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 57
- 230000005669 field effect Effects 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
The strong current electrifying circuit comprises a main loop and a control loop, wherein the main loop comprises a rectifying circuit and a bus capacitor C, the main loop further comprises a resistor R, a charging circuit, a braking circuit and a control switching circuit, the input end of the control switching circuit is connected with the output end of the control module, the first output end of the control switching circuit is connected with the control end of the charging circuit, the second output end of the control switching circuit is connected with the control end of the braking circuit, and the control switching circuit is used for enabling the resistor R to be connected into the charging circuit to serve as a current-limiting resistor or enabling the resistor to be connected into the braking circuit to serve as a braking resistor. The invention realizes the sharing of the current-limiting resistor and the braking resistor of the strong-current charging circuit, the volume and the cost of the current-limiting resistor are far higher than those of the control switching circuit, the space of a servo driver is saved, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of servo drivers, in particular to a strong current electrifying circuit, a control method and a servo driver.
Background
In the application of servo driver or industrial frequency converter, a strong electric charging circuit is often used in the case of strong electricity, so that a large-capacity electrolytic capacitor is connected across the direct current bus in order to obtain a stable direct current bus voltage. The traditional strong current charging circuit is generally formed by connecting a current-limiting resistor and a relay in parallel, the current-limiting resistor is only used for current limiting when a bus capacitor is charged at the power-on moment, when the bus capacitor is charged to a certain degree and the relay is closed, the resistor does not act, the resistance value of the resistor is generally dozens of ohms, and the cost is expensive. However, as the power of the servo driver increases, the power of the current limiting resistor required by the strong electric charging circuit also increases, so that the volume of the required current limiting resistor also increases, which is not favorable for realizing the trend that the servo driver tends to be miniaturized.
When the motor is suddenly decelerated or the running torque is applied from the outside, the counter electromotive force caused by the regeneration action is fed back to the bus through a freewheeling diode of the driver, when the filtering capacity of the bus capacitor is exceeded, the bus voltage is increased, and the regenerative braking circuit consumes the bus voltage through a braking resistor, so that the aim of quickly reducing the voltage of the large capacitor is fulfilled. The brake resistor is generally several tens of ohms in resistance and has a power higher than that of the current limiting resistor.
The resistance values of the current-limiting resistor for strong current charging and the brake resistor of the brake circuit are about dozens of ohms, and the power of the brake resistor is generally higher than that of the current-limiting resistor; the use of both the current limiting resistor and the braking resistor requires more space for the servo driver and higher cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a strong-current electrifying circuit, a control method and a servo driver, which can reduce the volume of the servo driver and reduce the cost.
The purpose of the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a strong current power-on circuit, including a main circuit and a control circuit, where the main circuit includes a rectification circuit and a bus capacitor C, and the main circuit further includes:
resistance R: the first end of the resistor R is connected with the anode of the bus capacitor C, and the resistor R is used for limiting current or consuming the voltage of the bus capacitor C;
a charging circuit: the first end of the charging circuit is connected with the direct current output end of the rectifying circuit, the second end of the charging circuit is connected with the second end of the resistor R, and the charging circuit is used for connecting the resistor R to the charging circuit when strong electricity is electrified and limiting current through the resistor R when the bus capacitor is charged;
a braking circuit: the first end and the second end of the braking circuit are respectively connected with two ends of a bus capacitor C, the third end of the braking circuit is connected with the second end of the charging circuit, the common end of the braking circuit is connected with the second end of the resistor R, and the control module is used for consuming the voltage of the bus capacitor C when the voltage of the bus capacitor C is too high;
the control switching circuit: the input end of the control switching circuit is connected with the output end of the control module, the first output end of the control switching circuit is connected with the control end of the charging circuit, the second output end of the control switching circuit is connected with the control end of the braking circuit, and the control switching circuit is used for enabling the resistor R to be connected into the charging circuit to serve as a current-limiting resistor or enabling the resistor R to be connected into the braking circuit to serve as a braking resistor.
Further, the charging circuit comprises a first conduction switch, an input end of the first conduction switch is connected with a direct current output end of the rectifying circuit, an output end of the first conduction switch is connected with a second end of the resistor R, and a control end of the first conduction switch is connected with a first output end of the control switching circuit.
Further, the braking circuit comprises an IGBT module U and a freewheeling diode D, an emitter of the IGBT module U is connected with a negative electrode of the bus capacitor C, a gate of the IGBT module U is connected with a second output end of the control switching circuit, a collector of the IGBT module U is connected with a positive electrode of the freewheeling diode D, a common end of the IGBT module U is connected with a second end of the resistor R and a second end of the charging circuit, and a negative electrode of the freewheeling diode D is connected with a positive electrode of the bus capacitor C, and a common end of the freewheeling diode D is connected with a first end of the resistor R.
Furthermore, the control switching circuit comprises a charging circuit control terminal and a braking circuit control terminal, the input end of the charging circuit control terminal is connected with the first output end of the control module, the output end of the charging circuit control terminal is connected with the control end of the charging circuit, the input end of the braking circuit control terminal is connected with the second output end of the control module, and the output end of the braking circuit control terminal is connected with the control end of the braking circuit.
Further, the first conduction switch is a triode, a field effect transistor or a relay.
Further, the main circuit further comprises a relay RLY, the relay RLY comprises a coil, a first normally open contact switch and a second normally open contact switch, one end of the coil is connected with the third output end of the control module, the other end of the coil is grounded, one end of the first normally open contact switch is connected with the direct current output end and the public end of the rectifying circuit and is connected with the first end of the charging circuit, the other end of the first normally open contact switch is connected with the anode of the bus capacitor C, the public end of the first normally open contact switch is connected with the first end of the resistor R and the cathode of the freewheeling diode D, one end of the second normally open contact switch is connected with the collector of the IGBT module U, and the other end of the second normally open contact switch is connected with the anode of the freewheeling diode D.
In a second aspect, the present invention further provides a method for controlling a strong electric circuit, where the method for controlling a strong electric circuit is implemented by the strong electric circuit of the first aspect.
Further, the control method of the strong current electrifying circuit comprises the following steps:
the control power supply is powered on, the control loop is powered on, and the control module works;
the control module enables the charging circuit to be conducted, the resistor R is connected into the charging circuit, and the bus capacitor C is charged through the charging circuit;
when the voltage of the bus capacitor C is larger than a preset voltage V, the control module enables the charging circuit to be cut off, meanwhile, the relay RLY is powered on and the braking circuit is powered on, the resistor R is connected into the braking circuit, and the bus capacitor C is directly powered through the rectifying circuit.
In a third aspect, the present invention further provides a servo driver, where the servo driver includes the strong power-on circuit of the first aspect.
Furthermore, the servo driver further comprises a low-voltage rectification circuit, a switching power supply, a control module and an inversion module, wherein the input end of the low-voltage rectification circuit is connected with the control power supply, the output end of the low-voltage rectification circuit is connected with the input end of the switching power supply, the output end of the switching power supply is connected with the input end of the control module, a first output terminal, a second output terminal and a third output terminal of the control module are all connected with the control end of the forced power-on circuit, the input end of the forced power-on circuit is connected with the input end of the inversion module, and the output end of the inversion module is connected with the motor.
According to the technical scheme, the invention has at least the following beneficial effects:
the invention provides a strong current electrifying circuit, a control method and a servo driver, wherein only one power resistor is needed to play a role in strong current charging and current limiting at the electrifying moment of the servo driver, and when the servo driver normally operates, the resistor is switched to a regenerative braking circuit to play a role in consuming regenerative energy; in the servo driver, the current-limiting resistor for strong electric charge and the braking resistor for regenerative braking are both devices with larger volume and higher cost.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
FIG. 1 is a schematic circuit diagram of a high-voltage power-on circuit according to an embodiment of the present invention.
FIG. 2 is a structural topology diagram of a servo driver of one embodiment of the present invention.
Fig. 3 is a conventional servo driver configuration diagram.
Wherein the reference numbers are as follows: 10. charging circuit, 20 braking circuit, 30 control switching circuit.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1 to 3.
Example 1, a strong electric power circuit.
As shown in fig. 3, a conventional strong current charging circuit 10 is generally formed by connecting a current-limiting resistor R1 and a relay RLY1 in parallel, at the moment of power-up, since a contact switch of the relay RLY1 is normally open, current is limited by the current-limiting resistor R1 to charge a bus capacitor C1, and when the voltage of the bus capacitor C1 is charged to a certain degree, the relay RLY1 is attracted to bypass the current-limiting resistor R1, so as to provide sufficient current-passing capacity for a main circuit. The regenerative braking circuit 20 is composed of a braking resistor R2 and an IGBT module U1, when the voltage of the bus capacitor C1 is too high, the regenerative braking circuit 20 consumes the voltage of the bus capacitor C1 through the braking resistor R2, and the purpose of quickly reducing the voltage of a large capacitor is achieved.
However, the resistance values of the current limiting resistor R1 for strong current charging and the brake resistor R2 for a brake circuit are about tens of ohms, and the power of the brake resistor R2 is generally higher than that of the current limiting resistor R1; the use of both the current limiting resistor R1 and the braking resistor R2 requires more space for the servo driver and higher cost.
In order to solve the above problem, the strong current electrifying circuit provided in this embodiment, as shown in fig. 1, includes a main circuit and a control circuit, where the main circuit includes a rectifying circuit and a bus capacitor C, and is characterized in that the main circuit further includes:
resistance R: the first end of the resistor R is connected with the anode of the bus capacitor C, and the resistor R is used for limiting current or consuming the voltage of the bus capacitor C;
the charging circuit 10: the first end of the charging circuit 10 is connected with the direct current output end of the rectifying circuit, the second end of the charging circuit 10 is connected with the second end of the resistor R, and the charging circuit 10 is used for connecting the resistor R to the charging circuit 10 when strong electricity is electrified and limiting current through the resistor R when a bus capacitor is charged;
the braking circuit 20: the first end and the second end of the braking circuit 20 are respectively connected with the two ends of the bus capacitor C, the third end of the braking circuit 20 is connected with the second end of the charging circuit 10, the common end of the braking circuit is connected with the second end of the resistor R, and the control module is used for consuming the voltage of the bus capacitor C when the voltage of the bus capacitor C is too high;
the control switching circuit 30: the input end of the control switching circuit 30 is connected to the output end of the control module, the first output end of the control switching circuit 30 is connected to the control end of the charging circuit 10, the second output end of the control switching circuit 30 is connected to the control end of the braking circuit 20, and the control switching circuit 30 is used for enabling the resistor R to be connected to the charging circuit 10 to serve as a current-limiting resistor or enabling the resistor to be connected to the braking circuit 20 to serve as a braking resistor.
The charging circuit 10 includes a first conducting switch, which may be any one of a triode, a fet, and a relay, and this embodiment is described by taking an N-channel junction fet Q1 (hereinafter referred to as a junction fet Q1) as an example; the drain electrode of the junction field effect transistor Q is connected with the direct current output end of the rectification circuit, the source electrode of the junction field effect transistor Q is connected with the second end of the resistor R, and the grid electrode of the junction field effect transistor Q is connected with the first output end of the control switching circuit 30.
When the control module enables the junction field effect transistor Q to be conducted, the output current of the rectifying circuit passes through the junction field effect transistor Q and then charges the bus capacitor C through the resistor R, when the junction field effect transistor Q is conducted, the resistor R is connected to the charging circuit 10 and serves as a charging resistor, and at the moment, the current can be limited through the resistor R and then the bus capacitor C is charged.
The braking circuit 20 comprises an IGBT module U and a freewheeling diode D, wherein an emitter of the IGBT module U is connected with a negative electrode of a bus capacitor C, a gate of the IGBT module U is connected with a second output end of the control switching circuit 30, a collector of the IGBT module U is connected with an anode of the freewheeling diode D, a common end of the IGBT module U is connected with a second end of a resistor R and a source of a junction field effect transistor Q1, and a negative electrode of the freewheeling diode D is connected with an anode of the bus capacitor C, and a common end of the freewheeling diode D is connected with a first end of the resistor.
When the IGBT module U is turned on, the resistor R is connected to the braking circuit 20, the freewheeling diode D and the resistor R may form the braking circuit 20, the resistor R is a braking resistor, and the reverse electromotive force in the circuit may be consumed by the freewheeling diode D and the resistor R connected in reverse.
The control switching circuit 30 comprises a control terminal of the charging circuit 10 and a control terminal of the braking circuit 20, the input end of the control terminal of the charging circuit 10 is connected with the first output end of the control module, the output end of the control terminal of the charging circuit 10 is connected with the grid electrode of the junction field effect transistor Q1, the input end of the control terminal of the braking circuit 20 is connected with the second output end of the control module, and the output end of the control terminal of the braking circuit 20 is connected with the gate electrode of the IGBT module U.
When the first output end of the control module outputs a high level, the high level is input into the jfet Q1 through the control terminal of the charging circuit 10, so that the jfet Q1 is turned off; when the first output terminal of the control module outputs a low level, the low level passes through the control terminal of the charging circuit 10 and is input to the jfet Q1, which turns on the jfet Q1. When the second output end of the control module outputs a high level, the IGBT module U is conducted through a control terminal of the brake circuit 20 or a gate pole of the IGBT module U; when the second output end of the control module outputs a low level, the IGBT module U is turned off by passing through the control terminal of the braking circuit 20 or inputting the low level to the gate of the IGBT module U.
The major loop still includes relay RLY, relay RLY includes the coil, first normally open contact switch and second normally open contact switch, the third output of coil one end connection control module, the other end ground connection of coil, rectifier circuit's direct current output end and common terminal connection junction type field effect transistor Q1's drain electrode is connected to first normally open contact switch one end, bus capacitor C's positive pole and common terminal connecting resistance R's the first end and freewheeling diode D's negative pole are connected to first normally open contact switch's the other end, IGBT module U's collecting electrode is connected to second normally open contact switch's one end, freewheeling diode D's positive pole is connected to second normally open contact switch's the other end.
Through the effect of relay RLY, only when bus capacitor C passes through rectifier circuit direct power supply, braking circuit 20 just can switch on work, avoids braking circuit 20 and charging circuit 10 to switch on simultaneously.
In this embodiment, the control module implements logic operation and I/O function through the control chip, the control chip may be MCU, ARM, FPGA, DSP, etc., and the MCU is taken as an example for illustration.
The working principle of the embodiment is as follows: the control power supply of the embodiment is powered on firstly, alternating current is converted into direct current through the low-voltage rectifying circuit after the control power supply is powered on, then power is supplied to the control module through the switching power supply, when the control power supply is just powered on, the first I/O port of the MCU outputs low level to enable the JFET Q1 to be connected, the second I/O port of the MCU outputs low level to enable the IGBT module U to be disconnected, the third I/O port of the MCU outputs low level to enable two normally open contacts of the relay RLY1 to be disconnected, and at the moment, the current is limited through the resistor R and then charges the bus capacitor C1; when the bus capacitor C1 is charged to a preset threshold voltage, the first I/O port of the MCU outputs a high level to cut off the junction field effect transistor Q1, the second I/O port of the MCU outputs a low level to turn on the IGBT module U, the third I/O port of the MCU outputs a high level to pull in two normally open contacts of the relay RLY1, and at the moment, the resistor R1 and the resistor U1 form a regenerative braking loop. Therefore, the current-limiting resistor and the braking resistor of the strong current charging circuit 10 are shared, and a novel strong current charging circuit 10 is formed.
The strong current electrifying circuit of the embodiment realizes the sharing of the current-limiting resistor and the braking resistor of the strong current charging circuit 10, the volume and the cost of the current-limiting resistor are far higher than those of the control switching circuit 30, the space of a servo driver is saved, and the cost is saved.
Embodiment 2, a method for controlling a high-voltage power-on circuit.
The present embodiment provides a method for controlling a strong electric circuit, which is implemented by the strong electric circuit described in embodiment 1, and includes the following steps:
step 1: the power supply is controlled to be powered on, the control loop is powered on, and the control module works;
the control power supply supplies power prior to the main loop power supply, the MCU is powered through the switching power supply after being rectified by the low-voltage rectifying circuit, and the MCU can control the strong-current power-on circuit.
Step 2: the control module enables the charging circuit 10 to be conducted, the resistor R is connected into the charging circuit 10, and the bus capacitor C is charged through the charging circuit 10;
the first I/O port of the MCU outputs low level to enable the junction field effect transistor Q1 to be switched on, the second I/O port of the MCU outputs low level to enable the IGBT module U to be switched off, the third I/O port of the MCU outputs low level to enable two normally open contacts of the relay RLY1 to be switched off, and at the moment, current is limited through the resistor R and then charges the bus capacitor C1.
And step 3: when the voltage of the bus capacitor C is greater than the preset voltage V, the control module enables the charging circuit 10 to be cut off, meanwhile, the relay RLY is powered on, the braking circuit 20 is powered on, the resistor R is connected to the braking circuit 20, and the bus capacitor C is directly powered through the rectifying circuit;
when the bus capacitor C1 is charged to a preset threshold voltage V, the first I/O port of the MCU outputs a high level to cut off the junction field effect transistor Q1, the second I/O port of the MCU outputs a low level to turn on the IGBT module U, the third I/O port of the MCU outputs a high level to pull in two normally open contacts of the relay RLY1, and at the moment, the resistor R1 and the resistor U1 form a regenerative braking loop. Therefore, the current-limiting resistor and the braking resistor of the strong current charging circuit 10 are shared, and a novel strong current charging circuit 10 is formed.
Embodiment 3, a servo driver.
This embodiment provides a servo driver including the strong power-on circuit of embodiment 1.
The servo driver further comprises a low-voltage rectifying circuit, a switching power supply, a control module and an inversion module, wherein the input end of the low-voltage rectifying circuit is connected with the control power supply, the output end of the low-voltage rectifying circuit is connected with the input end of the switching power supply, the output end of the switching power supply is connected with the input end of the control module, a first output terminal, a second output terminal and a third output terminal of the control module are connected with the control end of the power-on circuit, the input end of the power-on circuit is connected with the input end of the inversion module, and the output.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A strong current electrifying circuit comprises a main loop and a control loop, wherein the main loop comprises a rectifying circuit and a bus capacitor C, and the strong current electrifying circuit is characterized by further comprising:
resistance R: the first end of the resistor R is connected with the anode of the bus capacitor C, and the resistor R is used for limiting current or consuming the voltage of the bus capacitor C;
a charging circuit: the first end of the charging circuit is connected with the direct current output end of the rectifying circuit, the second end of the charging circuit is connected with the second end of the resistor R, and the charging circuit is used for connecting the resistor R to the charging circuit when strong electricity is electrified and limiting current through the resistor R when the bus capacitor is charged;
a braking circuit: the first end and the second end of the braking circuit are respectively connected with two ends of a bus capacitor C, the third end of the braking circuit is connected with the second end of the charging circuit, the common end of the braking circuit is connected with the second end of the resistor R, and the control module is used for consuming the voltage of the bus capacitor C when the voltage of the bus capacitor C is too high;
the control switching circuit: the input end of the control switching circuit is connected with the output end of the control module, the first output end of the control switching circuit is connected with the control end of the charging circuit, the second output end of the control switching circuit is connected with the control end of the braking circuit, and the control switching circuit is used for enabling the resistor R to be connected into the charging circuit to serve as a current-limiting resistor or enabling the resistor R to be connected into the braking circuit to serve as a braking resistor.
2. A strong current electrifying circuit as claimed in claim 1, wherein the charging circuit includes a first conducting switch, an input terminal of the first conducting switch is connected to the dc output terminal of the rectifying circuit, an output terminal of the first conducting switch is connected to the second terminal of the resistor R, and a control terminal of the first conducting switch is connected to the first output terminal of the control switching circuit.
3. A high-current power-on circuit as claimed in claim 1, wherein said braking circuit includes an IGBT module U and a freewheeling diode D, an emitter of said IGBT module U is connected to a cathode of said bus capacitor C, a gate of said IGBT module U is connected to a second output terminal of said control switching circuit, a collector of said IGBT module U is connected to an anode of said freewheeling diode D and a common terminal is connected to a second terminal of said resistor R and a second terminal of said charging circuit, and a cathode of said freewheeling diode D is connected to an anode of said bus capacitor C and a common terminal is connected to a first terminal of said resistor R.
4. The strong current electrifying circuit as claimed in claim 1, wherein the control switching circuit comprises a charging circuit control terminal and a braking circuit control terminal, wherein the input terminal of the charging circuit control terminal is connected to the first output terminal of the control module, the output terminal of the charging circuit control terminal is connected to the control terminal of the charging circuit, the input terminal of the braking circuit control terminal is connected to the second output terminal of the control module, and the output terminal of the braking circuit control terminal is connected to the control terminal of the braking circuit.
5. A strong current electrifying circuit as claimed in claim 2, wherein said first conducting switch is a triode or a field effect transistor or a relay.
6. A strong current electrifying circuit as claimed in claim 3, wherein the main circuit further comprises a relay RLY, the relay RLY comprises a coil, a first normally open contact switch and a second normally open contact switch, one end of the coil is connected to the third output terminal of the control module, the other end of the coil is grounded, one end of the first normally open contact switch is connected to the DC output terminal of the rectifying circuit and the common terminal is connected to the first terminal of the charging circuit, the other end of the first normally open contact switch is connected to the positive electrode of the bus capacitor C and the common terminal is connected to the first terminal of the resistor R and the negative electrode of the freewheeling diode D, one end of the second normally open contact switch is connected to the collector of the IGBT module U, and the other end of the second normally open contact switch is connected to the positive electrode of the freewheeling diode D.
7. A method for controlling a high-voltage power-on circuit, characterized in that the method is implemented by a high-voltage power-on circuit according to any one of claims 1 to 6.
8. The method for controlling a strong power circuit according to claim 7, comprising the steps of:
the control power supply is powered on, the control loop is powered on, and the control module works;
the control module enables the charging circuit to be conducted, the resistor R is connected into the charging circuit, and the bus capacitor C is charged through the charging circuit;
when the voltage of the bus capacitor C is larger than a preset voltage V, the control module enables the charging circuit to be cut off, meanwhile, the relay RLY is powered on and the braking circuit is powered on, the resistor R is connected into the braking circuit, and the bus capacitor C is directly powered through the rectifying circuit.
9. A servo driver, characterized in that it comprises a strong electric power circuit according to any one of claims 1 to 6.
10. The servo driver as claimed in claim 9, wherein the servo driver further comprises a low voltage rectification circuit, a switching power supply, a control module, and an inverter module, wherein an input terminal of the low voltage rectification circuit is connected to the control power supply, an output terminal of the low voltage rectification circuit is connected to an input terminal of the switching power supply, an output terminal of the switching power supply is connected to an input terminal of the control module, a first output terminal, a second output terminal, and a third output terminal of the control module are connected to a control terminal of the power-on circuit, an input terminal of the power-on circuit is connected to an input terminal of the inverter module, and an output terminal of the inverter module is connected to the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911214516.5A CN110971175A (en) | 2019-12-02 | 2019-12-02 | Strong-current electrifying circuit, control method and servo driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911214516.5A CN110971175A (en) | 2019-12-02 | 2019-12-02 | Strong-current electrifying circuit, control method and servo driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110971175A true CN110971175A (en) | 2020-04-07 |
Family
ID=70032574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911214516.5A Pending CN110971175A (en) | 2019-12-02 | 2019-12-02 | Strong-current electrifying circuit, control method and servo driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110971175A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541122A (en) * | 2021-07-20 | 2021-10-22 | 珠海格力电器股份有限公司 | Protection device and method for servo driver and servo motor |
| WO2024131749A1 (en) * | 2022-12-23 | 2024-06-27 | 浙江联宜电机有限公司 | Control circuit for reducing power-on pulse current and control method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0799784A (en) * | 1993-09-27 | 1995-04-11 | Fuji Electric Co Ltd | Charge-discharge control circuit for inverter |
| CN201515321U (en) * | 2009-09-28 | 2010-06-23 | 德力西(杭州)变频器有限公司 | Frequency converter main circuit capable of improving brake performance |
| CN202068361U (en) * | 2011-05-31 | 2011-12-07 | 中达光电工业（吴江）有限公司 | Motor driver |
| CN103715969A (en) * | 2013-12-26 | 2014-04-09 | 南京埃斯顿自动化股份有限公司 | AC servo driving system |
| CN103999342A (en) * | 2012-12-14 | 2014-08-20 | 三菱电机株式会社 | Inverter device |
| CN104167977A (en) * | 2014-08-30 | 2014-11-26 | 永济新时速电机电器有限责任公司 | Traction inverter for manned type high-speed mine truck |
-
2019
- 2019-12-02 CN CN201911214516.5A patent/CN110971175A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0799784A (en) * | 1993-09-27 | 1995-04-11 | Fuji Electric Co Ltd | Charge-discharge control circuit for inverter |
| CN201515321U (en) * | 2009-09-28 | 2010-06-23 | 德力西(杭州)变频器有限公司 | Frequency converter main circuit capable of improving brake performance |
| CN202068361U (en) * | 2011-05-31 | 2011-12-07 | 中达光电工业（吴江）有限公司 | Motor driver |
| CN103999342A (en) * | 2012-12-14 | 2014-08-20 | 三菱电机株式会社 | Inverter device |
| CN103715969A (en) * | 2013-12-26 | 2014-04-09 | 南京埃斯顿自动化股份有限公司 | AC servo driving system |
| CN104167977A (en) * | 2014-08-30 | 2014-11-26 | 永济新时速电机电器有限责任公司 | Traction inverter for manned type high-speed mine truck |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113541122A (en) * | 2021-07-20 | 2021-10-22 | 珠海格力电器股份有限公司 | Protection device and method for servo driver and servo motor |
| CN113541122B (en) * | 2021-07-20 | 2022-06-17 | 珠海格力电器股份有限公司 | Protection device and method for servo driver and servo motor |
| WO2024131749A1 (en) * | 2022-12-23 | 2024-06-27 | 浙江联宜电机有限公司 | Control circuit for reducing power-on pulse current and control method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2020527321A5 (en) | ||
| CN104868586A (en) | Automatic switching power supply circuit for double-way power supply | |
| CN203659753U (en) | Driving circuit of relay | |
| CN110971175A (en) | Strong-current electrifying circuit, control method and servo driver | |
| CN105071469A (en) | Solar charging circuit | |
| CN104602386A (en) | Positive and negative polarity conversion circuit and LED lamp | |
| CN104362773A (en) | Wireless electric energy transmitting device | |
| CN112886640A (en) | Current limiting circuit and energy storage system | |
| CN111740584A (en) | Single-phase staggered and three-phase Vienna topology compatible input PFC device | |
| CN104868708A (en) | Power-on buffering and bus discharge circuit for frequency converter | |
| WO2020114501A1 (en) | Power protection circuit | |
| WO2022242037A1 (en) | Power supply circuit, power supply system and smart door lock | |
| CN216356478U (en) | Photovoltaic inverter and buck circuit | |
| CN216929890U (en) | Auxiliary power supply of alternating current-direct current shared transformer | |
| CN216390832U (en) | Speed-adjustable double-end switch motor driving circuit | |
| CN105449742A (en) | Power supply polarity switching circuit and device | |
| CN214506569U (en) | Current limiting circuit and energy storage system | |
| CN115065140A (en) | Motor energy recovery circuit, charge-discharge module and electric equipment | |
| CN211930314U (en) | Robot power supply with energy storage device | |
| WO2019051718A1 (en) | Frequency converter, frequency converter assembly, and control method thereof | |
| CN110854951B (en) | Power supply system for high-power air conditioner wire controller, air conditioner and power supply method | |
| CN104617773A (en) | Positive-negative automatic conversion circuit and power output module | |
| CN113346589A (en) | Battery management system with bidirectional voltage-regulating charge-discharge function and management method | |
| CN203205871U (en) | Direct current reverse protection circuit | |
| CN102969892B (en) | wide input range DC-DC discharge circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |
|
| RJ01 | Rejection of invention patent application after publication |