CN217362896U - Frequency converter driving plate - Google Patents
Frequency converter driving plate Download PDFInfo
- Publication number
- CN217362896U CN217362896U CN202122676217.2U CN202122676217U CN217362896U CN 217362896 U CN217362896 U CN 217362896U CN 202122676217 U CN202122676217 U CN 202122676217U CN 217362896 U CN217362896 U CN 217362896U
- Authority
- CN
- China
- Prior art keywords
- terminal
- pin
- resistor
- circuit
- voltage
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model discloses a converter drive plate, including switching power supply circuit, current detection circuit, scarce looks protection circuit and winding displacement port, switching power supply circuit's input termination generating line positive negative pole, switching power supply circuit's output is connected with current detection circuit, scarce looks protection circuit and winding displacement port respectively, current detection circuit is connected with the winding displacement port, the winding displacement port is connected with scarce looks protection circuit, switching power supply circuit includes voltage detection circuit, keeps apart vary voltage module and steady voltage feedback module, voltage detection circuit is connected with keeping apart vary voltage module, it is connected with steady voltage feedback module to keep apart vary voltage module. The utility model discloses a to switch power supply circuit, current detection circuit, open phase protection circuit and winding displacement port's rational design, improved drive plate stability, reduce cost. Meanwhile, the layout of the whole circuit and components of the driving board is optimized, interference is reduced, and reliability is improved.
Description
Technical Field
The utility model relates to a drive plate technical field, concretely relates to converter drive plate.
Background
The Variable-frequency Drive (VFD) is a power control device that applies frequency conversion technology and microelectronic technology and controls an ac motor by changing the frequency of a working power supply of the motor, and the defects of the conventional Drive board of the existing frequency converter in the market mainly include the following points:
1. the switching power supply is large in size and too complex in structure, so that the fault rate of a product is increased, the comprehensive cost of the switching power supply is increased, and meanwhile, the switching power supply is low in stability and low in conversion efficiency.
2. The traditional detection technology of the motor current is generally of two types, wherein firstly, an inductive Hall sensor is adopted to detect the current, and secondly, an isolation optocoupler and operational amplifier method is adopted to detect, so that the problems of complex detection circuit, high cost and the like exist in the two modes. The hall sensor also has a certain limitation in application, because the sensor is small in measuring range, the sensor is generally only used for a frequency converter with small power and generally does not exceed 2.2 kw.
3. The circuit board layout is unreasonable, the interference is large, and the problems of component damage and the like are easily caused, so that the serious damage and even scrapping of the driving board are caused.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a converter drive plate to improve stability, reduce cost.
The utility model provides a converter drive plate, includes switching power supply circuit, current detection circuit, lacks looks protection circuit and winding displacement port, switching power supply circuit's input termination generating line positive negative pole, switching power supply circuit's output is connected with current detection circuit, lacks looks protection circuit and winding displacement port respectively, current detection circuit is connected with the winding displacement port, the winding displacement port is connected with lacking looks protection circuit, switching power supply circuit includes voltage detection circuit, isolation vary voltage module and steady voltage feedback module, voltage detection circuit is connected with isolation vary voltage module, isolation vary voltage module is connected with steady voltage feedback module.
Preferably, the switching power supply circuit further comprises a power supply chip and an absorption loop, and the power supply chip is connected with the voltage stabilization feedback module, the absorption loop and the isolation transformation module.
Preferably, the voltage stabilizing feedback module comprises a first voltage stabilizing feedback circuit and a second voltage stabilizing feedback circuit, the first voltage stabilizing feedback circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a photoelectric coupler, a voltage stabilizing source and a first diode, the second voltage stabilizing feedback circuit comprises a second capacitor, the first end of the first resistor is connected with the first end of the third resistor, the first end of the fourth resistor, the negative end of the first diode and the isolating transformer module, the second end of the first resistor is connected with the first end of the second resistor and the first end of the photoelectric coupler, the second end of the second resistor is connected with the second end of the photoelectric coupler, the second end of the third resistor, the negative electrode of the voltage stabilizing source and the first end of the first capacitor, the third end of the photoelectric coupler is connected with the first end and the negative electrode of the second capacitor, the fourth end of the photoelectric coupler is connected with the second end of the second capacitor and the power chip, the reference electrode of the voltage stabilizing source is connected with the second end of the first capacitor, the second end of the fourth resistor, the first end of the fifth resistor and the first end of the sixth resistor, and the anode of the voltage stabilizing source is connected with the second end of the fifth resistor, the second end of the sixth resistor, the positive electrode end of the first diode and the voltage detection circuit and is grounded.
Preferably, the voltage detection circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a third capacitor, a fourth capacitor, a fifth capacitor and a second diode, a positive terminal of the second diode is connected to the isolation transformer module, a negative terminal of the second diode is connected to a first terminal of the seventh resistor, a second terminal of the seventh resistor is connected to a first terminal of the eighth resistor and a first terminal of the third capacitor, a second terminal of the third capacitor is connected to a first terminal of the fourth capacitor, a second terminal of the eighth resistor is connected to a first terminal of the ninth resistor and a first terminal of the fifth capacitor, and a second terminal of the fourth capacitor is connected to a second terminal of the ninth resistor and a second terminal of the fifth capacitor and is grounded.
Preferably, the isolation transformer module comprises an isolation transformer, and the skeleton model of the isolation transformer is EI 28.
Preferably, the motor vehicle further comprises an IGBT driving circuit, a fan control circuit and a relay control circuit, wherein the IGBT driving circuit, the fan control circuit and the relay control circuit are respectively connected with the switching power supply circuit, and the IGBT driving circuit comprises a U-phase upper bridge driving unit, a V-phase upper bridge driving unit, a W-phase upper bridge driving unit, a U-phase lower bridge driving unit, a V-phase lower bridge driving unit, a W-phase lower bridge driving unit and a brake driving unit.
Preferably, the 1 st end of the isolation transformer is connected to the absorption loop, the 2 nd end of the isolation transformer is connected to the power chip, the 3 rd end of the isolation transformer is a +16V voltage output end, the 4 th end of the isolation transformer is connected to the negative electrode of the bus, the 5 th end of the isolation transformer is a-10V voltage output end, the 6 th end of the isolation transformer is a +12V voltage output end, the 7 th end of the isolation transformer is a +5V voltage output end, the 8 th end of the isolation transformer is connected to the voltage detection circuit, the 9 th end of the isolation transformer is a-12V voltage output end and a voltage detection output end, the 11 th end and the 12 th end of the isolation transformer are W-phase driving power output ends, the 13 th end and the 14 th end of the isolation transformer are V-phase driving power output ends, and the 15 th end and the 16 th end of the isolation transformer are U-phase driving power output ends.
Preferably, the type of the flat cable port is HEADER10X2, the 1 st pin of the flat cable port is connected with a-12V power supply, the 2 nd pin of the flat cable port is connected with a +12V power supply, the 3 rd pin of the flat cable port is grounded, the 4 th pin of the flat cable port is a temperature signal output pin, the 5 th pin and the 6 th pin of the flat cable port are connected with a +5V power supply, the 7 th pin of the flat cable port is a U-phase current signal output pin, the 8 th pin of the flat cable port is a V-phase current signal output pin, the 9 th pin of the flat cable port is a voltage detection signal output pin, the 10 th pin of the flat cable port is a relay control signal input pin, the 11 th pin of the flat cable port is a brake drive signal input pin, the 12 th pin of the flat cable port is a fan control signal input pin, the 13 th pin of the flat cable port is a U-phase upper bridge drive signal input pin, the 14 th pin of the flat cable port is a U-phase lower bridge drive signal input pin, the 15 th pin of the flat cable port is a V-phase upper bridge driving signal input pin, the 16 th pin of the flat cable port is a V-phase lower bridge driving signal input pin, the 17 th pin of the flat cable port is a W-phase upper bridge driving signal input pin, the 18 th pin of the flat cable port is a W-phase lower bridge driving signal input pin, and the 19 th pin and the 20 th pin of the flat cable port are respectively grounded.
Preferably, the current detection circuit comprises a patch hall sensor, and a low-resistance resistor is connected in parallel with a sampling end of the patch hall sensor.
The beneficial effects of the utility model are embodied in: through the reasonable design of the switch power supply circuit, the current detection circuit, the open-phase protection circuit and the flat cable port, the stability of the driving board is improved, and the cost is reduced. Simultaneously, through optimizing the overall arrangement of the whole circuit of drive plate and components and parts, reduce the interference, improved the reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a block diagram of a driving board of a frequency converter according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a first voltage stabilization feedback module of a frequency converter driving board according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a second voltage stabilization feedback module of a frequency converter driving board according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a voltage detection circuit of a driving board of a frequency converter according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an isolation transformer circuit of a frequency converter driving board according to an embodiment of the present invention;
fig. 6 is an electrical schematic diagram of an isolation transformer of a frequency converter driving board according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a current detection circuit of a frequency converter driving board according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a phase-loss protection circuit of a frequency converter driving board according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1, a frequency converter driving board comprises a switching power supply circuit, a current detection circuit, an open-phase protection circuit and a flat cable port, wherein an input end of the switching power supply circuit is connected with a positive electrode and a negative electrode of a bus, an output end of the switching power supply circuit is respectively connected with the current detection circuit, the open-phase protection circuit and the flat cable port, the current detection circuit is connected with the flat cable port, the flat cable port is connected with the open-phase protection circuit, the switching power supply circuit comprises a voltage detection circuit, an isolation transformation module and a voltage stabilization feedback module, the voltage detection circuit is connected with the isolation transformation module, and the isolation transformation module is connected with the voltage stabilization feedback module.
The switch power supply circuit further comprises a power supply chip and an absorption loop, wherein the power supply chip is connected with the voltage stabilization feedback module, the absorption loop and the isolation transformation module.
The voltage stabilization feedback module is used for improving the output voltage precision and the voltage stability of the switching power supply circuit and comprises a first voltage stabilization feedback circuit and a second voltage stabilization feedback circuit, the first voltage stabilization feedback circuit is connected with the isolation transformer, and the second voltage stabilization feedback circuit is connected with the power supply chip. As shown in fig. 2, the first voltage regulation feedback circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first capacitor C1, a photocoupler U1, a regulator U2, and a first diode D1, where the regulator U2 is TL 431. As shown in fig. 3, the second regulation feedback circuit includes a second capacitor C2.
Further, a first end of the first resistor R1 is connected to a first end of the third resistor R3, a first end of the fourth resistor R4, a negative end of the first diode D1 and the isolation transformer module, a second end of the first resistor R1 is connected to a first end of the second resistor R2 and a first end of the photocoupler U1, a second end of the second resistor R2 is connected to a second end of the photocoupler U1, a second end of the third resistor R3, a cathode of the regulated power source U2 and a first end of the first capacitor C1, a third end of the photocoupler U1 is connected to a first end of the second capacitor C2 and a negative electrode of the bus, a fourth end of the photocoupler U1 is connected to a second end of the second capacitor C2 and the power chip, a reference electrode of the regulated power source U2 is connected to a second end of the first capacitor C1, a second end of the fourth resistor R4, a first end of the fifth resistor R5 and a first end of the sixth resistor R5, and a first end of the regulated power source U6 are connected to the anode R599 of the regulated power source U5, The second terminal of the sixth resistor R6, the positive terminal of the first diode D1, and the voltage detection circuit are connected to ground.
Further, as shown in fig. 4, the voltage detection circuit includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a second diode D2. The positive terminal of the second diode D2 is connected to the isolation transformer module, the negative terminal of the second diode D2 is connected to the first terminal of the seventh resistor R7, the second terminal of the seventh resistor R7 is connected to the first terminal of the eighth resistor R8 and the first terminal of the third capacitor C3, the second terminal of the third capacitor C3 is connected to the first terminal of the fourth capacitor C4, the second terminal of the eighth resistor R8 is connected to the first terminal of the ninth resistor R9 and the first terminal of the fifth capacitor C5, and the second terminal of the fourth capacitor C4 is connected to the second terminal of the ninth resistor R9 and the second terminal of the fifth capacitor C5 and is grounded.
The drive plate further comprises an IGBT drive circuit, a fan control circuit and a relay control circuit, the IGBT drive circuit, the fan control circuit and the relay control circuit are respectively connected with the switching power supply circuit, and the IGBT drive circuit comprises a U-phase upper bridge drive unit, a V-phase upper bridge drive unit, a W-phase upper bridge drive unit, a U-phase lower bridge drive unit, a V-phase lower bridge drive unit, a W-phase lower bridge drive unit and a brake drive unit.
As shown in fig. 5, the isolation transformer module includes an isolation transformer T1, and the skeleton model of the isolation transformer T1 is EI 28. The 1 st end of the isolation transformer T1 is connected with the absorption loop, the 2 nd end of the T1 is connected with the power chip, the 3 rd end of the T1 is a +16V voltage output end, the 4 th end of the T1 is connected with the cathode of the bus, the 5 th end of the T1 is a-10V voltage output end, the 6 th end of the T1 is a +12V voltage output end, the 7 th end of the T1 is a +5V voltage output end, and the 7 th end is connected with three diodes which are respectively a third diode D3, a fourth diode D4 and a fifth diode D5, and the third diode D3, the fourth diode D4 and the fifth diode D5 are respectively connected in parallel, the 8 th end of the T1 is connected with the voltage detection circuit, the 9 th end of the T1 is a-12V voltage output end and a voltage detection output end, the 11 th end and the 12 th end of the T1 are W-phase driving power supply output ends, the 13 th end and the 14 th end of the T1 are V-phase driving power supply output ends, and the 15 th end and the 16 th end of the T1 are U-phase driving power supply output ends. Three parallel diodes are connected at the 7 th end of T1, so that the effect of increasing current and reducing heat is achieved.
Further, an electrical schematic diagram of the isolation transformer T1 is shown in fig. 6, and winding parameters thereof are as follows:
| winding(s) | Go-stop | Size of electric wire | Number of turns |
| N1 | 2-1 | 2UEW-0.29 | 90 |
| N2 | 8-9 | 2UEW-0.35 | 20.5 |
| N3 | 7-8 | 2UEW-0.25 | 9 |
| N4 | 6-8 | 2UEW-0.25 | 21 |
| N5 | 16-15 | 2UEW-0.25 | 39 |
| N6 | 14-13 | 2UEW-0.25 | 39 |
| N7 | 12-11 | 2UEW-0.25 | 39 |
| N8 | 4-5 | 2UEW-0.25 | 16 |
| N9 | 3-4 | 2UEW-0.25 | 24 |
Winding parameters of isolation transformer T1
Specifically, the switching power supply circuit is integrated on the circuit board and used for supplying power to the whole frequency converter and the internal circuit thereof, and the switching power supply circuit has the advantages of small size, high stability, high conversion efficiency and the like. Meanwhile, the coil winding sequence and the pin definition of the isolation transformer T1 are skillfully designed, and the required functions are completed on the framework of the transformer T1 of the EI 28. The reasonable winding sequence of the isolation transformer T1 improves the anti-interference performance of the drive plate.
Further, as shown in fig. 7, the current detection circuit includes a patch hall sensor, and has the advantages of small size, convenience in installation, low power consumption and the like. The sampling end of the chip Hall sensor is connected with a low-resistance resistor in parallel, so that the current flowing through the chip Hall sensor is reduced, a current detection circuit obtains a larger sampling range, and the power of a driving plate of the frequency converter can reach 5.5 kw. After the resistors are connected in parallel, the feedback current signal is smaller than the actual current signal, and the feedback current signal can be amplified through frequency converter software or amplified to the original proportion by using an operational amplifier circuit.
The flat cable port of the driving plate is HEADER10X2, and a 20-pin flat pin interface is adopted. The 1 st pin of the flat cable port is connected with a-12V power supply, the 2 nd pin of the flat cable port is connected with a +12V power supply, the 3 rd pin of the flat cable port is grounded, the 4 th pin of the flat cable port is a temperature signal output pin, the 5 th pin and the 6 th pin of the flat cable port are connected with a +5V power supply, the 7 th pin of the flat cable port is a U-phase current signal output pin, the 8 th pin of the flat cable port is a V-phase current signal output pin, the 9 th pin of the flat cable port is a voltage detection signal output pin, the 10 th pin of the flat cable port is a relay control signal input pin, the 11 th pin of the flat cable port is a brake drive signal input pin, the 12 th pin of the flat cable port is a fan control signal input pin, the 13 th pin of the flat cable port is a U-phase upper bridge drive signal input pin, the 14 th pin of the flat cable port is a U-phase lower bridge drive signal input pin, the 15 th pin of the flat cable port is a V-phase upper bridge drive signal input pin, the 16 th pin of the flat cable port is a V-phase lower bridge driving signal input pin, the 17 th pin of the flat cable port is a W-phase upper bridge driving signal input pin, the 18 th pin of the flat cable port is a W-phase lower bridge driving signal input pin, and the 19 th pin and the 20 th pin of the flat cable port are respectively grounded.
The bus cable port is an intercommunication interface for connecting the drive board with the frequency converter mainboard, provides electric energy, current detection signals, voltage detection signals and the like required by work for the frequency converter mainboard, and simultaneously the mainboard sends PWM driving signals of the IGBT, control signals of the fan and the relay and the like to the drive board through the bus cable port. The 20-pin row pin interface adopts a reasonable sequencing mode, reduces interference, increases reliability and facilitates wiring of a circuit board.
Preferably, as shown in fig. 8, the open-phase protection circuit samples through three voltage signals, obtains a relatively smooth dc voltage through six rectifier diodes, outputs the optocoupler conduction signal at this time at a low level, and outputs the optocoupler shutdown signal at a high level if a three-phase power input during actual operation is open-phase, thereby triggering open-phase protection.
The utility model provides a through the rational design to switch power supply circuit, current detection circuit, open phase protection circuit and winding displacement port, improved drive plate stability, reduce cost. Meanwhile, the layout of the whole circuit and components of the driving board is optimized, interference is reduced, and reliability is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (9)
1. The utility model provides a frequency converter drive plate, its characterized in that, includes switching power supply circuit, current detection circuit, lacks looks protection circuit and winding displacement port, switching power supply circuit's input termination generating line positive negative pole, switching power supply circuit's output is connected with current detection circuit, lacks looks protection circuit and winding displacement port respectively, current detection circuit is connected with the winding displacement port, the winding displacement port is connected with lacking looks protection circuit, switching power supply circuit includes voltage detection circuit, isolation vary voltage module and steady voltage feedback module, voltage detection circuit is connected with isolation vary voltage module, isolation vary voltage module is connected with steady voltage feedback module.
2. The frequency converter driving board according to claim 1, wherein the switching power supply circuit further comprises a power chip and an absorption loop, and the power chip is connected to the voltage stabilization feedback module, the absorption loop and the isolation transformation module.
3. The frequency converter driving board according to claim 2, wherein the voltage stabilization feedback module comprises a first voltage stabilization feedback circuit and a second voltage stabilization feedback circuit, the first voltage stabilization feedback circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a photocoupler, a voltage stabilization source and a first diode, the second voltage stabilization feedback circuit comprises a second capacitor, a first end of the first resistor is connected with a first end of the third resistor, a first end of the fourth resistor, a negative end of the first diode and the isolation transformer module, a second end of the first resistor is connected with a first end of the second resistor and a first end of the photocoupler, a second end of the second resistor is connected with a second end of the photocoupler, a second end of the third resistor, a negative electrode of the voltage stabilization source and a first end of the first capacitor, the third end of the photoelectric coupler is connected with the first end of the second capacitor and the negative electrode of the bus, the fourth end of the photoelectric coupler is connected with the second end of the second capacitor and the power chip, the reference electrode of the voltage stabilizing source is connected with the second end of the first capacitor, the second end of the fourth resistor, the first end of the fifth resistor and the first end of the sixth resistor, and the anode of the voltage stabilizing source is connected with the second end of the fifth resistor, the second end of the sixth resistor, the positive electrode end of the first diode and the voltage detection circuit and is grounded.
4. The inverter driving board according to claim 1, wherein the voltage detection circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a third capacitor, a fourth capacitor, a fifth capacitor and a second diode, a positive terminal of the second diode is connected to the isolation transformer module, a negative terminal of the second diode is connected to a first terminal of the seventh resistor, a second terminal of the seventh resistor is connected to a first terminal of the eighth resistor and a first terminal of the third capacitor, a second terminal of the third capacitor is connected to a first terminal of the fourth capacitor, a second terminal of the eighth resistor is connected to a first terminal of the ninth resistor and a first terminal of the fifth capacitor, and a second terminal of the fourth capacitor is connected to a second terminal of the ninth resistor and a second terminal of the fifth capacitor and is grounded.
5. The inverter driver board of claim 1, wherein the isolation transformer module comprises an isolation transformer having a bobbin model EI 28.
6. The inverter driving board according to claim 1, further comprising an IGBT driving circuit, a fan control circuit, and a relay control circuit, the IGBT driving circuit, the fan control circuit, and the relay control circuit being respectively connected to the switching power supply circuit, the IGBT driving circuit including a U-phase upper bridge driving unit, a V-phase upper bridge driving unit, a W-phase upper bridge driving unit, a U-phase lower bridge driving unit, a V-phase lower bridge driving unit, a W-phase lower bridge driving unit, and a brake driving unit.
7. The inverter driving board according to claim 5, wherein the 1 st terminal of the isolation transformer is connected to the absorption loop, the 2 nd terminal of the isolation transformer is connected to the power chip, the 3 rd terminal of the isolation transformer is a +16V voltage output terminal, the 4 th terminal of the isolation transformer is connected to the negative terminal of the bus, the 5 th terminal of the isolation transformer is a-10V voltage output terminal, the 6 th terminal of the isolation transformer is a +12V voltage output terminal, the 7 th terminal of the isolation transformer is a +5V voltage output terminal, the 8 th terminal of the isolation transformer is connected to the voltage detection circuit, the 9 th terminal of the isolation transformer is a-12V voltage output terminal and the voltage detection output terminal, the 11 th terminal and the 12 th terminal of the isolation transformer are W-phase driving power output terminals, the 13 th terminal and the 14 th terminal of the isolation transformer are V-phase driving power output terminals, and the 15 th terminal and the 16 th terminal of the isolation transformer are U-phase driving power output terminals.
8. The inverter driving board according to claim 6, wherein the bus cable port is of a HEADER10X2 type, the 1 st pin of the bus cable port is connected to a-12V power supply, the 2 nd pin of the bus cable port is connected to a +12V power supply, the 3 rd pin of the bus cable port is connected to ground, the 4 th pin of the bus cable port is a temperature signal output pin, the 5 th pin and the 6 th pin of the bus cable port are connected to a +5V power supply, the 7 th pin of the bus cable port is a U-phase current signal output pin, the 8 th pin of the bus cable port is a V-phase current signal output pin, the 9 th pin of the bus cable port is a voltage detection signal output pin, the 10 th pin of the bus cable port is a relay control signal input pin, the 11 th pin of the bus cable port is a brake driving signal input pin, the 12 th pin of the bus cable port is a fan control signal input pin, the 13 th pin of the bus cable port is a U-phase upper bridge driving signal input pin, the 14 th pin of the flat cable port is a U-phase lower bridge driving signal input pin, the 15 th pin of the flat cable port is a V-phase upper bridge driving signal input pin, the 16 th pin of the flat cable port is a V-phase lower bridge driving signal input pin, the 17 th pin of the flat cable port is a W-phase upper bridge driving signal input pin, the 18 th pin of the flat cable port is a W-phase lower bridge driving signal input pin, and the 19 th pin and the 20 th pin of the flat cable port are respectively grounded.
9. The frequency converter driving board according to claim 1, wherein the current detection circuit comprises a chip hall sensor, and a low-resistance resistor is connected in parallel to a sampling end of the chip hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122676217.2U CN217362896U (en) | 2021-11-02 | 2021-11-02 | Frequency converter driving plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122676217.2U CN217362896U (en) | 2021-11-02 | 2021-11-02 | Frequency converter driving plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217362896U true CN217362896U (en) | 2022-09-02 |
Family
ID=83008247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122676217.2U Active CN217362896U (en) | 2021-11-02 | 2021-11-02 | Frequency converter driving plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217362896U (en) |
-
2021
- 2021-11-02 CN CN202122676217.2U patent/CN217362896U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102689601A (en) | Integrated control system for new energy vehicles | |
| CN210468807U (en) | Frequency converter voltage sag protection device based on super capacitor energy storage | |
| CN103312246A (en) | Control system and control method of permanent magnet synchronous motor of series-connected cascade-type multi-level converter | |
| CN103091587A (en) | Energy-saving inverter test circuit and control method | |
| CN103475242A (en) | Plasma high frequency high voltage power supply | |
| CN104539197A (en) | Soft start and voltage reduction power saving comprehensive control device and method for asynchronous motor | |
| CN204615699U (en) | A kind of novel multi-motor driving centralized control system | |
| CN217362896U (en) | Frequency converter driving plate | |
| CN112297894A (en) | Integrated vehicle-mounted charger with wide-range output | |
| CN210273878U (en) | Control device for high-power motor control mechanism | |
| CN112366925A (en) | Novel frequency converter drive plate | |
| CN105186836A (en) | Power supply under-voltage protection method and protection circuit thereof | |
| CN109742928A (en) | A kind of dedicated power supply apparatus of controller of plastic injection molding | |
| CN217362897U (en) | Low-power frequency converter drive plate | |
| CN210041671U (en) | Isolated AC-DC power supply for high speed motorized spindle drive | |
| CN209250322U (en) | A kind of 60kW charge power supply system | |
| CN109449885B (en) | BLDC speed regulation control circuit | |
| CN105529974B (en) | A kind of diesel locomotive auxiliary generator exciter control system and control method | |
| CN201435684Y (en) | Low-voltage frequency converter | |
| CN109687749A (en) | Boost three-leg inverter and boosting adjusting method | |
| CN216625342U (en) | Special charging device for super capacitor | |
| CN213122133U (en) | Energy-saving inverter testing device | |
| CN216146173U (en) | Brushless DC motor, electric drive device, and electric device | |
| CN202840460U (en) | Bypass conversion device | |
| CN213937783U (en) | Permanent magnet synchronous motor control system adopting sensorless double-ring starting technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |