CN213876459U - Voltage stabilizing circuit for direct-current brushless motor bus and motor drive controller - Google Patents
Voltage stabilizing circuit for direct-current brushless motor bus and motor drive controller Download PDFInfo
- Publication number
- CN213876459U CN213876459U CN202120052919.0U CN202120052919U CN213876459U CN 213876459 U CN213876459 U CN 213876459U CN 202120052919 U CN202120052919 U CN 202120052919U CN 213876459 U CN213876459 U CN 213876459U
- Authority
- CN
- China
- Prior art keywords
- voltage
- diode
- resistor
- brushless motor
- unit
- 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.)
- Active
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model provides a voltage stabilizing circuit for DC brushless motor generating line, including the difference detection module that has operational amplification unit and scaling unit, prevent too high voltage input to operational amplification unit's voltage input clamp module, be used for improving operational amplification unit output voltage driving force's voltage follow module and be used for preventing voltage to follow the voltage output clamp module that the module exported too high voltage to the steady voltage that output can supply to detect. The utility model also provides a motor drive controller with voltage stabilizing circuit, including drive circuit and the control drive circuit's of drive DC brushless motor work controller, the controller shuts down or sends cue signal according to the voltage control drive circuit that detects for protection drive circuit and by drive circuit driven DC brushless motor.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and relates to a voltage stabilizing circuit for a direct current brushless motor bus;
and a brushless DC motor drive controller having a voltage regulator circuit for a brushless DC motor bus.
Background
In the dc brushless motor driving controller, a stable power supply voltage is required to enable a power component (such as a dc brushless motor) to normally work, but the dc brushless motor has unstable voltage and is easy to generate overvoltage or undervoltage in the working process, an excessively high voltage can cause damage of electronic components to cause failure of circuit function, and an excessively low voltage can cause abnormal circuit operation, so that the dc brushless motor driving controller needs a stable input voltage to prevent the voltage from being excessively high or excessively low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a voltage stabilizing circuit for a direct current brushless motor bus and a direct current brushless motor driving controller with the voltage stabilizing circuit, so as to output voltage for detection, and the stability is good; the controller controls the driving circuit to drive the direct current brushless motor to stop or send out a prompt signal according to the detected voltage, so that the driving circuit and the direct current brushless motor driven by the driving circuit are protected.
The utility model discloses a realize like this, a voltage stabilizing circuit for DC brushless motor generating line, include:
the differential detection module is provided with an operational amplification unit and a scaling unit, wherein the scaling unit is arranged at the periphery of the operational amplification unit and is used for setting scaling multiple so as to scale the input voltage;
the voltage input clamping module is used for preventing overhigh voltage from being input to the operational amplification unit;
and the voltage following module is used for improving the driving capability of the output signal of the operational amplification unit.
And the voltage output clamping module is used for preventing the voltage following module from outputting overhigh voltage.
Specifically, the operational amplification unit of the operational amplification unit is a first operational amplifier having a first non-inverting input terminal, a first inverting input terminal, and a first output terminal.
Specifically, the zooming unit consists of a positive pole isolation unit, a negative pole isolation unit, a first configuration unit and a second configuration unit;
the positive pole isolation unit comprises at least one first resistor, one end of the first resistor is used for being connected with a positive pole of voltage supplied to the direct current brushless motor driving circuit, and the other end of the first resistor is connected with the first in-phase input end;
the negative pole isolation unit comprises at least one second resistor, one end of the second resistor is used for being connected with a negative pole of voltage supplied to the direct current brushless motor driving circuit, and the other end of the second resistor is connected with the first inverting input end;
the first configuration unit comprises a third resistor, one end of the third resistor is connected with the first in-phase input end, and the other end of the third resistor is grounded;
the second configuration unit comprises a fourth resistor, one end of the fourth resistor is connected with the first inverting input end, and the other end of the fourth resistor is connected with the first output end.
Specifically, the voltage input clamping module comprises:
the device comprises a positive clamping unit, a negative clamping unit and a bidirectional diode;
the positive electrode clamping unit includes: a first diode and a second diode;
the negative end of the first diode is used for being connected with a power supply end, the positive end of the first diode is respectively connected with the negative end of the second diode, the non-inverting input end of the first operational amplifier and one end of the bidirectional diode, and the positive end of the second diode is grounded;
the negative clamp unit includes: a third diode and a fourth diode;
the anode of the third diode is grounded, the cathode of the third diode is respectively connected with the anode of a fourth diode, the other end of the bidirectional diode and the reverse input end of the first operational amplifier, and the cathode of the fourth diode is used for being connected with a power supply.
Specifically, the voltage following module comprises a second operational amplifier, and a non-inverting input end of the second operational amplifier is connected with an output end of the first operational amplifier;
and the inverting input end of the second operational amplifier is connected with the output end of the second operational amplifier through a fifth resistor.
Specifically, the voltage output clamping module comprises a fifth diode and a sixth diode;
the negative electrode of the fifth diode is used for being connected with a power supply end, the positive electrode end of the fifth diode is respectively connected with the negative electrode end of the sixth diode and the other end of the sixth resistor, and the positive electrode end of the sixth diode is grounded.
Furthermore, the voltage stabilizing circuit also comprises a first filtering unit for filtering burrs and peaks in the input voltage;
the first filtering unit comprises a first capacitor respectively connected between the first non-inverting input end and the first inverting input end, a second capacitor respectively connected with two ends of a third resistor, and a third capacitor respectively connected with two ends of a fourth resistor.
Furthermore, the voltage stabilizing circuit also comprises a second filtering module for filtering the voltage output by the second operational amplifier;
the second filtering module comprises a sixth resistor and a fourth capacitor, and one end of the sixth resistor is connected with the output end of the second operational amplifier;
the other end of the sixth resistor is connected with the voltage output clamping module and one end of the fourth capacitor respectively and is also used for being connected with the input end of the controller, and the other end of the fourth capacitor is grounded.
Furthermore, the voltage stabilizing circuit also comprises a third filtering module for filtering a power supply for supplying power to the voltage following module;
the third filtering module comprises a fifth capacitor and a sixth capacitor which are arranged in parallel, one end of the fifth capacitor and one end of the sixth capacitor are respectively used for being connected with a power supply end, and the other end of the fifth capacitor and the other end of the sixth capacitor are respectively grounded.
The utility model provides a voltage stabilizing circuit for DC brushless motor generating line, including the difference detection module that has operational amplification unit and scaling unit, prevent too high voltage input to operational amplification unit's voltage input clamp module, be used for improving operational amplification unit output voltage driving force's voltage follow module and be used for preventing voltage to follow the voltage output clamp module that the module exported too high voltage to the steady voltage that output can supply to detect.
The utility model also provides a motor drive controller with voltage stabilizing circuit, including drive circuit and the control drive circuit of drive DC brushless motor work and have the controller that detects the function, the controller shuts down or sends cue signal according to the voltage control drive circuit that detects for protection drive circuit and by drive circuit driven DC brushless motor.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a voltage stabilizing circuit for a dc brushless motor bus according to an embodiment of the present invention.
Fig. 2 is a block diagram of a motor drive controller with a voltage stabilizing circuit according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a voltage stabilizing circuit for a dc brushless motor bus, including:
the differential detection module is provided with an operational amplification unit 1 and a scaling unit 2, wherein the scaling unit 2 is arranged on the periphery of the operational amplification unit 1 and is used for setting a scaling multiple so as to scale an input voltage, in the embodiment, the input voltage is a direct current voltage, and the direct current voltage is 24V;
the voltage input clamping module 3 is used for preventing overhigh voltage from being input to the operational amplification unit 1;
and the voltage following module 4 is used for improving the driving capability of the output signal of the operational amplification unit 1 and playing a role in isolation and buffering.
And the voltage output clamping module 5 is used for preventing the voltage following module 4 from outputting too high voltage.
Specifically, the operational amplifier unit of the operational amplifier unit 2 is a first operational amplifier U1, and the first operational amplifier U1 has a first non-inverting input terminal, a first inverting input terminal and a first output terminal.
Specifically, the zooming unit 2 is composed of a positive pole isolation unit 21, a negative pole isolation unit 22, a first configuration unit 23 and a second configuration unit 24;
the positive isolation unit 11 includes at least one first resistor R1, in this embodiment, two first resistors R1 are provided in series, one end of the first resistor R1 is used for being connected to a positive electrode of a voltage supplied to the dc brushless motor driving circuit, and the other end of the first resistor R1 is connected to a first non-inverting input terminal;
the negative isolation unit 12 includes at least one second resistor R2, in this embodiment, two second resistors R2 are provided in series, one end of the second resistor R2 is used for being connected to a negative electrode of the voltage supplied to the dc brushless motor driving circuit, and the other end of the second resistor R2 is connected to the first inverting input terminal;
the first configuration unit 23 comprises a third resistor R3, one end of the third resistor R3 is connected with the first non-inverting input end, and the other end is grounded;
the second configuration unit 23 includes a fourth resistor R4, one end of the fourth resistor R4 is connected to the first inverting input terminal, and the other end is connected to the first output terminal.
In this embodiment, the resistance of the third resistor R3 is the same as the resistance of the fourth resistor R4, and both are 200K ohms.
The output bus voltage can be calculated by the following formula:
(V+-V)÷R1＝V÷R3 ①
(V--V)÷R2＝(V-Vout)÷R4②
R3＝R4＝Rα R1＝R2＝Rβ ③
Vout＝(Rα÷Rβ)×(V+-V-)④
Vout＝(10K÷200K)×24 ⑤
Vout＝1.2 ⑥
thus, it can be seen that: the scaled voltage is detected to be 1.2V, within 3.3V, meeting the requirements.
Specifically, the voltage input clamp module 3 includes:
a positive clamping unit 31, a negative clamping unit 32, and a bidirectional diode D;
the positive electrode clamping unit 31 includes: a first diode D1 and a second diode D2;
the negative end of the first diode D1 is used for being connected with a power supply end, the positive end of the first diode D1 is respectively connected with the negative end of the second diode D2, the non-inverting input end of the first operational amplifier U1 and one end of the bidirectional diode D, and the positive end of the second diode D2 is grounded;
the negative clamp unit 32 includes: a third diode D3 and a fourth diode D4;
the anode of the third diode D3 is grounded, the cathode of the third diode D3 is connected to the anode of the fourth diode D4, the other end of the bidirectional diode D, and the reverse input end of the first operational amplifier U1, and the cathode of the fourth diode D4 is used for being connected to a power supply, where the input voltage of the power supply in this embodiment is 3.3V.
Specifically, the voltage following module 4 comprises a second operational amplifier U2, wherein the non-inverting input terminal of the second operational amplifier U2 is connected with the output terminal of the first operational amplifier U1;
the inverting input terminal of the second operational amplifier U2 is connected to the output terminal of the second operational amplifier U2 through a fifth resistor R5.
Specifically, the voltage output clamping module 5 includes a fifth diode D5 and a sixth diode D6;
the negative electrode of the fifth diode D5 is used for being connected with the power supply end, the positive electrode of the fifth diode D5 is respectively connected with the negative electrode of the sixth diode D6 and the other end of the sixth resistor R6, and the positive electrode of the sixth diode D6 is grounded.
Further, the voltage stabilizing circuit further comprises a first filtering unit 6 for filtering burrs and peaks in the input voltage;
the first filtering unit 6 includes a first capacitor C1 connected between the first non-inverting input terminal and the first inverting input terminal, a second capacitor C2 connected to two ends of the third resistor R3, and a third capacitor C3 connected to two ends of the fourth resistor R4.
Further, the voltage stabilizing circuit also comprises a second filtering module 7 for filtering the voltage output by the second operational amplifier U2;
the second filtering module 7 comprises a sixth resistor R6 and a fourth capacitor C4, and one end of the sixth resistor R6 is connected with the output end of the second operational amplifier U2;
the other end of the sixth resistor R6 is connected to one end of the voltage output clamping module 5 and one end of the fourth capacitor C4, and is further used for being connected to the input end of the controller, and the other end of the fourth capacitor C4 is grounded.
Further, the voltage stabilizing circuit further comprises a third filtering module 8 for filtering a power supply for supplying power to the voltage following module 4;
the third filtering module 8 includes a fifth capacitor C5 and a sixth capacitor C6, which are connected in parallel, one end of the fifth capacitor C5 and one end of the sixth capacitor C6 are respectively connected to the power supply terminal, and the other end of the fifth capacitor C5 and the other end of the sixth capacitor C6 are respectively grounded.
The utility model provides a voltage stabilizing circuit for DC brushless motor generating line, including the difference detection module that has operational amplification unit 1 and zoom unit 2, prevent too high voltage input to operational amplification unit 1's voltage input clamping module 3, be used for improving the voltage of operational amplification unit 1 output voltage driving force and follow module 4 and be used for preventing voltage to follow module 4 and output voltage output clamping module 5 of too high voltage to the steady voltage that output can supply to detect.
As shown in fig. 2, the utility model also provides a motor drive controller with voltage stabilizing circuit, including drive circuit and the control drive circuit of drive direct current brushless motor work and the controller that has the detection function, the controller shuts down or sends cue signal according to the voltage control drive circuit that detects, protects drive circuit and by drive circuit driven direct current brushless motor.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A voltage stabilizing circuit for a DC brushless motor bus, comprising:
the differential detection module is provided with an operational amplification unit and a scaling unit, wherein the scaling unit is arranged at the periphery of the operational amplification unit and is used for setting scaling multiple so as to scale the input voltage;
the voltage input clamping module is used for preventing overhigh voltage from being input to the operational amplification unit;
the voltage following module is used for improving the driving capability of the output voltage of the operational amplification unit;
and the voltage output clamping module is used for preventing the voltage following module from outputting overhigh voltage.
2. The voltage stabilizing circuit for a dc brushless motor bus of claim 1, wherein the operational amplifier unit of the operational amplifier unit is a first operational amplifier having a first non-inverting input terminal, a first inverting input terminal and a first output terminal.
3. The voltage stabilizing circuit for the direct current brushless motor bus of claim 2, wherein the scaling unit is composed of a positive pole isolation unit, a negative pole isolation unit, a first configuration unit and a second configuration unit;
the positive pole isolation unit comprises at least one first resistor, one end of the first resistor is used for being connected with a positive pole of voltage supplied to the direct current brushless motor driving circuit, and the other end of the first resistor is connected with the first in-phase input end;
the negative pole isolation unit comprises at least one second resistor, one end of the second resistor is used for being connected with a negative pole of voltage supplied to the direct current brushless motor driving circuit, and the other end of the second resistor is connected with the first inverting input end;
the first configuration unit comprises a third resistor, one end of the third resistor is connected with the first in-phase input end, and the other end of the third resistor is grounded;
the second configuration unit comprises a fourth resistor, one end of the fourth resistor is connected with the first inverting input end, and the other end of the fourth resistor is connected with the first output end.
4. The voltage stabilizing circuit for a dc brushless motor bus of claim 3, wherein the voltage input clamping module comprises:
the device comprises a positive clamping unit, a negative clamping unit and a bidirectional diode;
the positive electrode clamping unit includes: a first diode and a second diode;
the negative end of the first diode is used for being connected with a power supply end, the positive end of the first diode is respectively connected with the negative end of the second diode, the non-inverting input end of the first operational amplifier and one end of the bidirectional diode, and the positive end of the second diode is grounded;
the negative clamp unit includes: a third diode and a fourth diode;
the anode of the third diode is grounded, the cathode of the third diode is respectively connected with the anode of a fourth diode, the other end of the bidirectional diode and the reverse input end of the first operational amplifier, and the cathode of the fourth diode is used for being connected with a power supply.
5. The voltage stabilizing circuit for a dc brushless motor bus of claim 2, wherein the voltage follower module comprises a second operational amplifier, a non-inverting input of the second operational amplifier being connected to an output of the first operational amplifier;
and the inverting input end of the second operational amplifier is connected with the output end of the second operational amplifier through a fifth resistor.
6. The voltage stabilizing circuit for a dc brushless motor bus of claim 5, wherein the voltage output clamping module comprises a fifth diode and a sixth diode;
the negative electrode of the fifth diode is used for being connected with a power supply end, the positive electrode end of the fifth diode is respectively connected with the negative electrode end of the sixth diode and the other end of the sixth resistor, and the positive electrode end of the sixth diode is grounded.
7. The voltage stabilizing circuit for the direct current brushless motor bus of claim 3, further comprising a first filtering unit for filtering out glitches and spikes in the input voltage;
the first filtering unit comprises a first capacitor respectively connected between the first non-inverting input end and the first inverting input end, a second capacitor respectively connected with two ends of a third resistor, and a third capacitor respectively connected with two ends of a fourth resistor.
8. The voltage stabilizing circuit for a direct current brushless motor bus of claim 5, further comprising a second filtering module for filtering the voltage output by the second operational amplifier;
the second filtering module comprises a sixth resistor and a fourth capacitor, and one end of the sixth resistor is connected with the output end of the second operational amplifier;
the other end of the sixth resistor is connected with the voltage output clamping module and one end of the fourth capacitor respectively and is also used for being connected with the input end of the controller, and the other end of the fourth capacitor is grounded.
9. The voltage stabilizing circuit for a dc brushless motor bus of claim 1, further comprising a third filtering module for filtering a power supply source supplying power to the voltage following module;
the third filtering module comprises a fifth capacitor and a sixth capacitor which are arranged in parallel, one end of the fifth capacitor and one end of the sixth capacitor are respectively used for being connected with a power supply end, and the other end of the fifth capacitor and the other end of the sixth capacitor are respectively grounded.
10. A motor driving controller, comprising a driving circuit for driving a dc brushless motor to work and a controller for controlling the driving circuit and having a detection function, further comprising a voltage stabilizing circuit for a dc brushless motor bus according to any one of claims 1 to 9, wherein the controller controls the driving circuit to stop or send a prompt signal according to the detected voltage, so as to protect the driving circuit and the dc brushless motor driven by the driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120052919.0U CN213876459U (en) | 2021-01-08 | 2021-01-08 | Voltage stabilizing circuit for direct-current brushless motor bus and motor drive controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120052919.0U CN213876459U (en) | 2021-01-08 | 2021-01-08 | Voltage stabilizing circuit for direct-current brushless motor bus and motor drive controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213876459U true CN213876459U (en) | 2021-08-03 |
Family
ID=77045143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120052919.0U Active CN213876459U (en) | 2021-01-08 | 2021-01-08 | Voltage stabilizing circuit for direct-current brushless motor bus and motor drive controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213876459U (en) |
-
2021
- 2021-01-08 CN CN202120052919.0U patent/CN213876459U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20240072534A1 (en) | Start method for photovoltaic rapid shutdown system, application apparatus and system | |
| WO2022252417A1 (en) | Phase loss detection circuit for three-phase power source, and electric motor controller for bldc electric motor | |
| US20200195004A1 (en) | Current protection circuit and method for high voltage system | |
| CN111371065B (en) | Servo driver IGBT overcurrent turn-off stage protection circuit | |
| CN209329672U (en) | A kind of current protecting circuit for high-pressure system | |
| CN213876459U (en) | Voltage stabilizing circuit for direct-current brushless motor bus and motor drive controller | |
| CN108258940A (en) | A kind of motor DC start-control device | |
| US20160050729A1 (en) | Drive circuit for illumination device and illumination device | |
| CN116317660A (en) | Controllable inverter circuit | |
| CN218633321U (en) | Output voltage dicyclo steady voltage protection circuit | |
| CN220457288U (en) | Startup circuit, device and system | |
| CN217335111U (en) | Reverse connection prevention detection circuit of wide-range charger | |
| CN219181192U (en) | Power supply overvoltage suppression circuit | |
| CN214851013U (en) | Power supply switching circuit and power supply switching device | |
| CN212695707U (en) | MOSFET surge protection circuit | |
| CN218386791U (en) | Temperature protection power supply circuit | |
| CN103647249A (en) | Under-voltage protection circuit | |
| CN117081514B (en) | Power supply system of digital audio power amplifier | |
| CN218997959U (en) | Signal input circuit for brushless fan controller | |
| CN220603574U (en) | Input voltage detection circuit, switching power supply control chip and switching power supply | |
| CN215647504U (en) | Overvoltage protection circuit and driving power supply of signal control end | |
| CN218325138U (en) | Compressor driver with low pressure detection function | |
| CN108614414A (en) | Large-scale data center generating set dynamic redundancy control system | |
| CN1094643C (en) | Relay type long service life approach switch | |
| CN214958683U (en) | Permanent magnet synchronous motor driver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |