CN217981761U - Short circuit testing device capable of simulating motor magnetic loop - Google Patents
Short circuit testing device capable of simulating motor magnetic loop Download PDFInfo
- Publication number
- CN217981761U CN217981761U CN202222256891.XU CN202222256891U CN217981761U CN 217981761 U CN217981761 U CN 217981761U CN 202222256891 U CN202222256891 U CN 202222256891U CN 217981761 U CN217981761 U CN 217981761U
- Authority
- CN
- China
- Prior art keywords
- motor
- inductance coils
- short circuit
- resistance
- inductance
- 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
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The utility model relates to a motor drive product test technical field discloses a can simulate short circuit testing arrangement in motor magnetic circuit, including motor drive, load, resistance R1, resistance R2 and resistance R3, motor drive power input VCC/GND, output UVW looks, the load includes inductance coils L1, inductance coils L2 and inductance coils L3, inductance coils L1, inductance coils L2 and inductance coils L3 star connection, inductance coils L1, inductance coils L2 and inductance coils L3 and concatenate resistance R1, resistance R2 and resistance R3 between motor drive's the UVW. The utility model provides a but short circuit testing arrangement in simulation motor magnetic circuit uses 3 inductance coils to replace the motor as the load, has eliminated the influence of short circuit test in-process motor load to being tested, has ensured security and test accuracy in the short circuit test.
Description
Technical Field
The utility model relates to a motor drive product test technical field, in particular to but short circuit testing arrangement in simulation motor magnetic circuit.
Background
The motor driver normally carries an actual motor load to carry out a short circuit test, the high-speed running state of the motor can be instantly stopped in the test process, the current is instantly changed due to the reverse electromotive force and the rotating mechanical inertia of the motor, the short circuit test result is influenced, and the risk of damaging the driver exists. The line resistance of the motor is small, and short circuit exists between the UVW phase and the power supply/ground, so that the risk of burning the motor exists.
SUMMERY OF THE UTILITY MODEL
The utility model provides a but short circuit testing arrangement in simulation motor magnetic circuit uses 3 inductance coils to replace the motor as the load, has eliminated the influence of short circuit test in-process motor load to being tested, has ensured security and test accuracy in the short circuit test process.
The utility model provides a can simulate short circuit testing arrangement in motor magnetic circuit, including motor drive, load, resistance R1, resistance R2 and resistance R3, motor drive power input VCC/GND, output UVW is mutually, the load includes inductance coils L1, inductance coils L2 and inductance coils L3, inductance coils L1, inductance coils L2 and inductance coils L3 star connection, inductance coils L1, inductance coils L2 and inductance coils L3 and concatenate resistance R1, resistance R2 and resistance R3 between motor drive's the UVW.
Furthermore, a resistor R1 is connected in series between the inductance coil L1 and the U phase of the motor driver, a resistor R2 is connected in series between the inductance coil L3 and the V phase of the motor driver, and a resistor R3 is connected in series between the inductance coil L2 and the W phase of the motor driver.
Further, the inductance coil L1, the inductance coil L2, and the inductance coil L3 are all inductance coils with magnetic bars.
Furthermore, a circuit breaker QF1 is connected between the U phase of the motor driver and a power supply VCC, a circuit breaker QF2 is connected between the W phase of the motor driver and a ground GND, and a circuit breaker QF3 is connected between the W phase of the motor driver and the U phase.
Furthermore, the bearable current values of the inductance coil L1, the inductance coil L2 and the inductance coil L3 are all larger than the short-circuit protection current value of the motor driver.
Furthermore, the bearable current values of the resistor R1, the resistor R2 and the resistor R3 are all larger than the short-circuit protection current value of the motor driver.
The utility model has the advantages that:
the utility model discloses use 3 inductance coils to replace the motor as the load, can test the alternate short circuit of motor drive UVW, the looks is with power VCC short circuit, the looks is with ground GND short circuit. During short circuit testing, the motor can not be rapidly stopped from a high-speed running state, the influence of the load on the tested sample is eliminated, and the testing is safer and more accurate. The treatment mode of the inductance series resistor prevents the inductance coil from being burnt when the protection phase is short-circuited with a power supply/ground.
Drawings
Fig. 1 is a circuit diagram of the short circuit testing device capable of simulating the magnetic circuit of the motor of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
Furthermore, the descriptions in the present application related to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are implicitly being indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1, the utility model provides a can simulate short circuit testing arrangement of motor magnetic circuit, including motor drive, load, resistance R1, resistance R2 and resistance R3, motor drive power input VCC/GND, output UVW looks, the load includes inductance coil L1, inductance coil L2 and inductance coil L3, inductance coil L1, inductance coil L2 and inductance coil L3 star connection; the inductance coil simulates the wiring mode of the motor, and the example adopts star connection, and the selection is carried out according to the motor scheme supported by the motor driver.
The short-circuit protection circuit comprises an inductance coil L1, an inductance coil L2, an inductance coil L3 and a motor driver, wherein a resistor R1, a resistor R2 and a resistor R3 are connected in series between the inductance coil L1, the inductance coil L2 and an UVW of the motor driver, a resistor R1 is connected in series between the inductance coil L1 and a U phase of the motor driver, a resistor R2 is connected in series between the inductance coil L3 and a V phase of the motor driver, a resistor R3 is connected in series between the inductance coil L2 and a W phase of the motor driver, and bearable current values of the resistor R1, the resistor R2 and the resistor R3 are all larger than a short-circuit protection current value of the motor driver.
The inductance coil L1, the inductance coil L2 and the inductance coil L3 are all inductance coils with magnetic bars, coil inductance is selected by referring to line inductance of a substitute motor, and bearable current values of the inductance coil L1, the inductance coil L2 and the inductance coil L3 are all larger than a short-circuit protection current value of the motor driver.
The circuit breaker QF1 is connected between the U phase and a power supply VCC of the motor driver, the circuit breaker QF2 is connected between the W phase and a ground GND of the motor driver, and the circuit breaker QF3 is connected between the W phase and the U phase of the motor driver.
The motor driver outputs high-voltage large current, and a short-circuit protection scheme is required due to safety requirements, so that the effectiveness of short-circuit protection needs to be tested. The utility model discloses use 3 inductance coils to replace the motor as the load, eliminated the influence of short circuit test in-process motor load to being tested, ensured security and test accuracy in the short circuit test process. The processing mode of the inductance series resistor prevents the inductance coil from being burnt when the protection phase is short-circuited with a power supply/ground. The motor driver UVW interphase short circuit, the phase and power VCC short circuit and the phase and ground GND short circuit can be tested. During short circuit test, the motor can not be rapidly stopped from a high-speed running state, the influence of the load on a tested sample is eliminated, and the test is safer and more accurate.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of another identical element in a process, apparatus, article, or method comprising the element.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (6)
1. The utility model provides a but short circuit testing arrangement of simulation motor magnetic circuit which characterized in that, includes motor drive, load, resistance R1, resistance R2 and resistance R3, motor drive power input VCC/GND, output UVW looks, the load includes inductance coils L1, inductance coils L2 and inductance coils L3, inductance coils L1, inductance coils L2 and inductance coils L3 star connection, inductance coils L1, inductance coils L2 and inductance coils L3 and concatenate resistance R1, resistance R2 and resistance R3 between motor drive's the UVW.
2. The short circuit testing device capable of simulating the magnetic circuit of the motor according to claim 1, wherein a resistor R1 is connected in series between the inductor L1 and the U phase of the motor driver, a resistor R2 is connected in series between the inductor L3 and the V phase of the motor driver, and a resistor R3 is connected in series between the inductor L2 and the W phase of the motor driver.
3. The short circuit testing device capable of simulating the magnetic circuit of the motor according to claim 2, wherein the inductor L1, the inductor L2 and the inductor L3 are all inductor coils with magnetic bars.
4. The short circuit testing device capable of simulating the motor magnetic circuit according to claim 1, wherein a circuit breaker QF1 is connected between a U phase of the motor driver and a power supply VCC, a circuit breaker QF2 is connected between a W phase of the motor driver and a ground GND, and a circuit breaker QF3 is connected between the W phase of the motor driver and the U phase.
5. The short circuit testing device capable of simulating the magnetic circuit of the motor according to claim 1, wherein the bearable current values of the inductance coil L1, the inductance coil L2 and the inductance coil L3 are all larger than the short circuit protection current value of the motor driver.
6. The short circuit testing device capable of simulating the magnetic circuit of the motor according to claim 1, wherein the bearable current values of the resistor R1, the resistor R2 and the resistor R3 are all larger than the short circuit protection current value of the motor driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222256891.XU CN217981761U (en) | 2022-08-26 | 2022-08-26 | Short circuit testing device capable of simulating motor magnetic loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222256891.XU CN217981761U (en) | 2022-08-26 | 2022-08-26 | Short circuit testing device capable of simulating motor magnetic loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217981761U true CN217981761U (en) | 2022-12-06 |
Family
ID=84259504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222256891.XU Active CN217981761U (en) | 2022-08-26 | 2022-08-26 | Short circuit testing device capable of simulating motor magnetic loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217981761U (en) |
-
2022
- 2022-08-26 CN CN202222256891.XU patent/CN217981761U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Smith et al. | Real-time detection of intermittent misfiring in a voltage-fed PWM inverter induction-motor drive | |
| Pedra et al. | PSPICE computer model of a nonlinear three-phase three-legged transformer | |
| JPS5816459B2 (en) | Motor winding temperature detection device | |
| Barzegaran et al. | Fault diagnosis of the asynchronous machines through magnetic signature analysis using finite-element method and neural networks | |
| US10295414B2 (en) | Method for determining a coil temperature of an electric machine | |
| Cruz et al. | Rotor cage fault diagnosis in three-phase induction motors by the total instantaneous power spectral analysis | |
| CN106291361A (en) | The fault detection method of brshless DC motor and device | |
| Fitouri et al. | Modeling and detection of the short-circuit fault in PMSM using Finite Element Analysis | |
| CN217981761U (en) | Short circuit testing device capable of simulating motor magnetic loop | |
| Bakhri et al. | Investigation of negative sequence components for stator shorted turn detection in induction motors | |
| Jeong et al. | Classification and detection of demagnetization and inter-turn short circuit faults in IPMSMs by using convolutional neural networks | |
| Yazidi et al. | Double-fed three-phase induction machine abc model for simulation and control purposes | |
| Bhardwaj et al. | Fault diagnosis of three phase induction motor using fuzzy logic controller and sequence analyzer | |
| CA1289191C (en) | Detection of transposition group short circuits in machine windings | |
| Karaagac et al. | Synchronous machines | |
| Stojčić et al. | Increasing sensitivity of stator winding short circuit fault indicator in inverter fed induction machines | |
| US5694044A (en) | Simultaneous surge test of two coils of an assembly of series connected coils | |
| Härsjö et al. | Modeling and harmonic analysis of a permanent magnet synchronous machine with turn-to-turn fault | |
| Delmotte‐Delforge et al. | Comparison of two modeling methods for induction machine study: application to diagnosis | |
| Tumageanian et al. | Maximum likelihood estimation of synchronous machine parameters from flux decay data | |
| CN116529842A (en) | Balance characteristic test device of zero-phase current transformer | |
| Elez et al. | Detection of inter-coil short circuits in synchronous machine armature winding on the basis of analysis of machine magnetic field | |
| Hassan | Dynamic behavior analysis of synchronous generator using MATLAB/SIMULINK | |
| US5202620A (en) | Apparatus for measuring the time constant of the direct-axis damper of a synchronous machine | |
| Wamkeue et al. | Numerical modeling and simulation of unsymmetrical transients on synchronous machines with neutral included |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |