CN-122017556-A - Axial magnetic flux permanent magnet electric energy consumption testing device

CN122017556ACN 122017556 ACN122017556 ACN 122017556ACN-122017556-A

Abstract

The invention relates to the technical field of motor testing, in particular to an axial magnetic flux permanent magnet machine energy consumption testing device which comprises a signal separation module, a decoupling component module, an eddy current loss module, a model construction module, a trend change module and a comprehensive report generation module, wherein multiple paths of electric signals and vibration signals are synchronously collected, decoupling analysis is carried out on the multiple paths of electric signals to obtain phase current harmonic components, copper loss fluctuation components and mechanical loss fluctuation components of a target motor in the operation process are separated, current response changes caused by high-frequency disturbance voltage signals are detected, real-time eddy current loss components of an iron core are analyzed, a loss component mapping relation model is constructed, a driving testing loop simulates load circulation containing a power generation feedback state, and the cooperative change trend among the loss components is monitored, operation efficiency and energy recovery characteristics are evaluated, and comprehensive energy consumption evaluation reports are obtained.

Inventors

WANG HUADONG
ZHANG ZHENZHOU
HAO HAITAO
SHEN DASHUAI
Gao Qianzhen
LEI ZONGYING
GUO XIANGXIANG
FAN SIJIA

Assignees

山东海纳智能装备科技股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260224

Claims (10)

1. The axial magnetic flux permanent magnet electric energy consumption testing device is characterized by comprising a signal separation module, a decoupling component module, an eddy current loss module, a model construction module, a trend change module and a comprehensive report generation module, wherein: the signal separation module is used for connecting a target motor into the test loop, enabling the target motor to operate under a preset multi-working condition instruction sequence, and synchronously collecting multi-path electric signals and vibration signals of the target motor; The decoupling component module is used for carrying out decoupling analysis on the multipath electric signals to obtain phase current harmonic components of the target motor, and separating copper loss fluctuation components and mechanical loss fluctuation components of the target motor in the operation process by combining specific frequency band energy in the vibration signals; The eddy current loss module is used for analyzing the real-time eddy current loss component of the iron core in the target motor by injecting a controllable high-frequency disturbance voltage signal which is synchronous with the counter potential waveform of the target motor into the test loop and detecting the current response change caused by the high-frequency disturbance voltage signal; The model construction module is used for carrying out multi-mode fitting on the copper loss fluctuation component, the mechanical loss fluctuation component, the real-time eddy current loss component and the total input electric power of the target motor to construct a loss component mapping relation model of the target motor under all working conditions; the trend change module is used for driving the test loop to simulate a load cycle comprising a power generation feedback state based on the loss component mapping relation model, and monitoring the cooperative change trend among loss components in the loss component mapping relation model in the process; and the comprehensive report generation module is used for evaluating the running efficiency and the energy recovery characteristic of the target motor according to the cooperative variation trend to obtain a comprehensive energy consumption evaluation report of the target motor.
2. The axial flux permanent magnet electric machine energy testing device according to claim 1, wherein the signal separation module is specifically configured to, when executing the step of connecting the target electric machine to the testing circuit, make the target electric machine operate under a preset multi-working condition instruction sequence, and synchronously collect multiple electrical signals and vibration signals of the target electric machine: a preset multi-working-condition instruction sequence is sent to a controller of a target motor, and a synchronous trigger signal of the target motor is generated according to a step change node of the preset multi-working-condition instruction sequence; the synchronous trigger signal is transmitted to an acquisition channel of the target motor in a branching way, and the synchronous trigger signal is utilized to synchronously start the acquisition channel so as to continuously sample the target motor; in a continuous sampling process, taking a key electric signal in the acquisition channel as a reference signal, and determining a high-precision time scale sequence of the target motor according to a zero crossing event of the reference signal; comparing the high-precision time scale sequence with the expected time sequence of the synchronous trigger signal in real time to obtain the time sequence drift amount of the target motor; based on the time sequence drift amount, the relative time sequence synchronous relation between channels with different dimensions in the acquisition channels is dynamically corrected by adjusting the phase of the synchronous trigger signal in the subsequent sampling period, And according to the relative time sequence synchronization relation, synchronously acquiring signals of the target motor to obtain multipath electric signals and vibration signals of the target motor.
3. The axial flux permanent magnet electric energy testing device of claim 1, wherein the decoupling component module is configured to, when performing decoupling analysis on the multiple electrical signals to obtain a phase current harmonic component of the target motor, and combining energy in a specific frequency band in the vibration signal, separate a copper loss fluctuation component and a mechanical loss fluctuation component of the target motor in an operation process, specifically: Based on a torque command in-phase change command in the preset multi-working condition command sequence, performing time domain decomposition on phase current signals in the multi-path electric signals to obtain current first components of the multi-path electric signals; removing the first current component from the phase current signal to obtain a phase current harmonic component of the phase current signal; Constructing a frequency selection network of the target motor according to the current electric frequency of the target motor, and inputting the vibration signal into the frequency selection network to obtain specific frequency band energy of the vibration signal; performing similarity matching analysis on the amplitude envelope of the phase current harmonic component and the amplitude envelope of the specific frequency band energy; Classifying energy fluctuation of the phase current harmonic component as copper loss fluctuation component of the target motor when the change of the envelope amplitude of the phase current harmonic component dominates the change of the envelope amplitude of the energy of the specific frequency band; And classifying the energy fluctuation of the specific frequency band energy as a mechanical loss fluctuation component of the target motor when the change of the envelope amplitude of the specific frequency band energy is independent of the change of the envelope amplitude of the phase current harmonic component and is associated with a rotating speed instruction step in the preset multi-working condition instruction sequence.
4. The axial-flux permanent magnet electric energy testing device according to claim 3, wherein the decoupling component module is configured to, when executing the frequency selection network of the target motor according to the current electric frequency of the target motor, input the vibration signal into the frequency selection network to obtain the specific frequency band energy of the vibration signal, specifically: monitoring the real-time electric frequency of the target motor, and determining the fundamental frequency of the mechanical rotation synchronization of the rotor in the target motor according to the real-time electric frequency; Determining a passband frequency range of the captured mechanical state features in the target motor by taking the fundamental frequency as a reference; configuring the frequency response characteristic of the frequency selection network according to the passband frequency range to enable the frequency selection network to attenuate vibration signal components outside the passband frequency range to obtain a preliminary attenuation signal of the target motor; And filtering out high-frequency components directly related to electromagnetic noise in the preliminary attenuation signal and low-frequency drift components irrelevant to basic rotation in mechanical rotation synchronization of the rotor to obtain a specific frequency band energy signal of the target motor.
5. The axial flux permanent magnet electric energy testing device of claim 1, wherein the eddy current loss module, when executing the operation of injecting a controllable high frequency disturbance voltage signal synchronized with the counter potential waveform of the target electric motor into the testing loop, and detecting a current response change caused by the high frequency disturbance voltage signal, is specifically configured to, when resolving out a real-time eddy current loss component of an iron core in the target electric motor: Acquiring a reference counter potential waveform of the target motor when no high-frequency disturbance voltage signal is injected; determining a high-frequency carrier signal of the target motor according to the zero crossing point and slope characteristics of the reference counter potential waveform; Dynamically phase-locking the phase of the high-frequency carrier signal and the instantaneous value of the selected phase in the reference counter potential waveform to obtain the phase reference of the high-frequency disturbance voltage signal; synthesizing the phase reference and a preset disturbance amplitude into a high-frequency disturbance voltage signal of the target motor, and injecting the high-frequency disturbance voltage signal into the test loop; Collecting a phase current waveform flowing through the target motor while injecting the high-frequency disturbance voltage signal, and separating out a current response component with the same frequency as the high-frequency disturbance voltage signal in the phase current waveform; And according to the ratio of the amplitude of the current response component with the same frequency to the high-frequency disturbance voltage signal, carrying out differential analysis on the current response component with the same frequency and the reference impedance of the winding parameter in the target motor, and taking the differential result as a real-time eddy current loss component of the target motor.
6. The axial flux permanent magnet electric energy testing device according to claim 1, wherein the model construction module is configured to, when performing multi-modal fitting of the copper loss fluctuation component, the mechanical loss fluctuation component, the real-time eddy current loss component, and the total input electric power of the target electric motor, construct a loss component mapping relation model of the target electric motor under all working conditions: Respectively carrying out standardization processing on the copper loss fluctuation component, the mechanical loss fluctuation component, the real-time eddy current loss component and the total input electric power of the target motor to obtain a copper loss standardization factor, a mechanical loss standardization factor, an eddy current loss standardization factor and a total power standardization factor of the target motor; Performing linear weighted coupling on the copper loss normalization factor, the mechanical loss normalization factor, the eddy current loss normalization factor and the total power normalization factor to obtain a linear mapping relation model of the target motor; And taking the linear mapping relation model as a loss component mapping relation model of the target motor under all working conditions.
7. The axial flux permanent magnet electric energy testing device of claim 6, wherein the linear mapping relation model has a calculation formula as follows: ; In the formula, For the linear mapping relation model described above, For the weight of the copper loss normalization factor, The weight of the mechanical loss normalization factor, Weighting the eddy current loss normalization factor, For the weight of the total power normalization factor, For the copper loss normalization factor, For the mechanical loss normalization factor to be the same, For the eddy current loss normalization factor, For the total power normalization factor to be the same, Is a nonlinear synergistic effect coefficient.
8. The axial flux permanent magnet electric energy testing device according to claim 1, wherein the trend change module is configured to, when executing the load cycle including the power generation feedback state based on the loss component mapping relation model, drive the testing loop, and in the process, monitor a cooperative trend of change between loss components in the loss component mapping relation model: Continuously recording the real-time numerical value change direction between loss components in the loss component mapping relation model in the electric state stage of the load cycle; According to the real-time numerical value change direction, when the test loop is driven to enter a power generation feedback state, the change direction of the copper loss fluctuation component is identified; In the power generation feedback state, comparing the change directions of the mechanical loss fluctuation component and the real-time eddy current loss component, and carrying out trend comparison analysis with the change direction of the copper loss fluctuation component to obtain a trend comparison result of the test loop; and determining the collaborative state identification of the dynamic association relation in the loss component according to the trend comparison result.
9. The axial-flux permanent magnet electric energy testing device according to claim 8, wherein the trend change module is specifically configured to, when executing the trend comparison result to obtain the collaborative state identifier of the dynamic association relationship in the loss component: Judging the consistency of the change direction of the mechanical loss fluctuation component and the change direction of the copper loss fluctuation component in the power generation feedback state; Judging the change consistency of the change direction of the real-time eddy current loss component compared with the change consistency of the mechanical loss fluctuation component; If the change direction of the mechanical loss fluctuation component is opposite to the change direction of the copper loss fluctuation component, and the change of the real-time eddy current loss component presents hysteresis characteristics for the change of the mechanical loss fluctuation component, defining the collaborative state identifier as a first type collaborative mode of the loss component mapping relation model; If the change direction of the mechanical loss fluctuation component is opposite to the change direction of the copper loss fluctuation component, but the change of the real-time eddy current loss component presents the advance characteristic of the change of the mechanical loss fluctuation component, defining the collaborative state identifier as a second type collaborative mode of the loss component mapping relation model; And in the duty cycle, according to the switching sequence between the first type of cooperative mode and the second type of cooperative mode, obtaining the cooperative variation trend of the loss component mapping relation model.
10. The axial-flux permanent magnet electric energy testing device according to claim 1, wherein the comprehensive report generating module is specifically configured to, when executing the evaluation of the operation efficiency and the energy recovery characteristic of the target electric motor according to the cooperative variation trend, obtain a comprehensive energy consumption evaluation report of the target electric motor: identifying a target state identifier corresponding to the power generation feedback state in the cooperative variation trend; Extracting a change profile between a mechanical loss fluctuation component and a copper loss fluctuation component from the duty cycle based on the target state identification; Comparing the change profile with a reference profile of the electric state stage, and judging the mechanical loss attenuation characteristic and copper loss fluctuation stability of the target motor; When the mechanical loss is attenuated and the copper loss fluctuation is stable, a positive evaluation result of high-efficiency energy recovery in the target motor is obtained; when the mechanical loss is attenuated and the copper loss fluctuation is severe, a negative evaluation result of the coupling loss existing in the target motor is obtained; and integrating the positive evaluation result, the negative evaluation result and the loss component mapping relation model to obtain a comprehensive energy consumption evaluation report of the target motor.

Description

Axial magnetic flux permanent magnet electric energy consumption testing device Technical Field The invention relates to the technical field of motor testing, in particular to an axial magnetic flux permanent magnet motor energy consumption testing device. Background In the field of axial magnetic flux permanent magnet electric energy consumption test, the prior art is difficult to realize high-precision synchronous acquisition of multipath electric signals and vibration signals under multiple working conditions, and a time sequence drift correction mechanism is missing, so that the time sequence consistency of signal acquisition is insufficient. Meanwhile, decoupling analysis on phase current harmonic components and energy of a specific frequency band of a vibration signal is not deep enough, copper loss fluctuation components and mechanical loss fluctuation components cannot be separated accurately, so that identification accuracy of loss components in energy consumption tests is low, and accuracy of subsequent energy consumption evaluation is affected. The existing energy consumption testing technology lacks load cycle simulation capability aiming at a power generation feedback state, a loss component mapping relation model under all working conditions is difficult to construct, and a cooperative variation trend between loss components cannot be effectively monitored. In addition, the evaluation of the motor operation efficiency and the energy recovery characteristic lacks scientific quantitative basis, so that the generation efficiency of the comprehensive energy consumption evaluation report is low, and a comprehensive and reliable technical support cannot be provided for the performance optimization of the motor. Therefore, how to improve the energy efficiency test of the axial magnetic flux permanent magnet motor becomes a problem to be solved urgently. Disclosure of Invention In order to achieve the above purpose, the axial magnetic flux permanent magnet electric energy consumption testing device provided by the invention is characterized by comprising a signal separation module, a decoupling component module, an eddy current loss module, a model construction module, a trend change module and a comprehensive report generation module, wherein: the signal separation module is used for connecting a target motor into the test loop, enabling the target motor to operate under a preset multi-working condition instruction sequence, and synchronously collecting multi-path electric signals and vibration signals of the target motor; The decoupling component module is used for carrying out decoupling analysis on the multipath electric signals to obtain phase current harmonic components of the target motor, and separating copper loss fluctuation components and mechanical loss fluctuation components of the target motor in the operation process by combining specific frequency band energy in the vibration signals; The eddy current loss module is used for analyzing the real-time eddy current loss component of the iron core in the target motor by injecting a controllable high-frequency disturbance voltage signal which is synchronous with the counter potential waveform of the target motor into the test loop and detecting the current response change caused by the high-frequency disturbance voltage signal; The model construction module is used for carrying out multi-mode fitting on the copper loss fluctuation component, the mechanical loss fluctuation component, the real-time eddy current loss component and the total input electric power of the target motor to construct a loss component mapping relation model of the target motor under all working conditions; the trend change module is used for driving the test loop to simulate a load cycle comprising a power generation feedback state based on the loss component mapping relation model, and monitoring the cooperative change trend among loss components in the loss component mapping relation model in the process; and the comprehensive report generation module is used for evaluating the running efficiency and the energy recovery characteristic of the target motor according to the cooperative variation trend to obtain a comprehensive energy consumption evaluation report of the target motor. In a preferred embodiment, the signal separation module is specifically configured to, when executing the step of connecting the target motor to the test circuit, operating the target motor under a preset multi-working condition instruction sequence, and synchronously collecting multiple electrical signals and vibration signals of the target motor: a preset multi-working-condition instruction sequence is sent to a controller of a target motor, and a synchronous trigger signal of the target motor is generated according to a step change node of the preset multi-working-condition instruction sequence; the synchronous trigger signal is transmitted to an acquisition channel of the target motor