CN104166063A - Feedback type alternating-current electronic load used for frequency converter aging test - Google Patents
Feedback type alternating-current electronic load used for frequency converter aging test Download PDFInfo
- Publication number
- CN104166063A CN104166063A CN201410424882.4A CN201410424882A CN104166063A CN 104166063 A CN104166063 A CN 104166063A CN 201410424882 A CN201410424882 A CN 201410424882A CN 104166063 A CN104166063 A CN 104166063A
- Authority
- CN
- China
- Prior art keywords
- port
- module
- rectification
- dsp processor
- frequency converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Rectifiers (AREA)
Abstract
The invention discloses a feedback type alternating-current electronic load used for the frequency converter aging test, and relates to an energy-saving type alternating-current power supply device load test device. The feedback type alternating-current electronic load used for the frequency converter aging test comprises a tested device, a first rectification IPM module, a second rectification IPM module and a DSP. The first rectification IPM module is used for simulating the load characteristics and comprises an alternating-current port, a direct-current port and a control port. The second rectification IPM module is sued for feeding electric energy absorbed by the tested device back to a power grid in a pollution-free mode and comprises an alternating-current port, a direct-current port and a control port. The DSP comprises an EVA output port and an EVB output port which are used for generating PWM signals. By means of the feedback type alternating-current electronic load, the real load characteristics can be simulated, and the energy absorbed by the tested device can be fed back to the power grid in the pollution-free mode.
Description
Technical field
The present invention relates to energy-saving alternating current supply unit load testing equipment, especially relate to a kind of energy-saving type frequency conversion device load testing equipment.
Background technology
Frequency converter is a kind of electric control appliance that frequency that converter technique and microelectric technique changes machine operation power supply is controlled alternating current generator of applying.Along with improving constantly of industrial automatization, frequency converter has also obtained application more and more widely, meanwhile, also more and more higher to the performance requirement of frequency converter.Two stages that one of important way that the performance of frequency converter is ensured is exactly when it is designed and developed and dispatches from the factory are all carried out strict test, as heating radiator temperature rise test, load aging test and output short circuit protection test etc.
Current frequency converter test mainly contains two kinds:
One, motor and Dyn. are to dragging platform.The motor run Dyn. running of tested transducer drive corresponding power is generated electricity, and by resistance, the electricity sending is converted into thermal energy consumption and falls;
Its two, two motors is to dragging platform.The motor that the motor of tested transducer drive corresponding power and an other load inverter drag carries out coaxially dragging, and load inverter operates under torque mode increases load to tested frequency converter, thereby reaches test request.
Not only equipment volume is large for above two kinds of modes, and the noise of generation exists, and load regulation ability, and energy consumption is large.
Separately through retrieval, find, Chinese Patent Application No. is 201420073126.7, name is called the patent of " a kind of energy-saving type frequency conversion device load testing equipment ", energy-saving type frequency conversion device load testing equipment described in the disclosed scheme of this patent is comprised of tested frequency converter, load equipment and device frequency converter, system architecture adopts electric energy feedback type design, the equidirectional operation slip of load motor, drives generating, and the energy of output motor is re-used.The shortcoming of the disclosed scheme of this patent is that load equipment is two three-phase AC asynchronous motors, fictitious load characteristic completely, and regulating load size continuously, and also electric energy feedback efficiency is low.
Energy feedback type alternating current electronic load can be simulated various load characteristics, makes testing of equipment more convenient comprehensively, also provides the storage of real time and on line monitoring and effective information because of it simultaneously, so can also realize unmanned, reduces human cost; In conjunction with inversion transformation technique, can, by the free of contamination feedback grid of electric energy absorbing, realize recycling of energy from frequency converter test again.As can be seen here, energy feedback type alternating current electronic load can meet the robotization of frequency converter burn-in test and the requirement of saving the energy, has higher economic results in society and wide market application foreground.
Through the retrieval of existing technical literature is found, " research of high power AC electronic load " (Pan Shifeng, Zhao Jianfeng, Wang Xun. the research of high power AC electronic load [J]. Power Electronic Technique .2006.12 (4) .97-100) studied a kind of alternating current electronic load based on AC-DC-AC mapped structure, a filter capacitor has respectively been introduced at its main circuit structure two ends, with the higher hamonic wave of filtering input, output current.But itself there is resonance problems in LC wave filter, once this design of filter and control strategy are improper, will destroy the stability of system, filter capacitor also can cause reactive current and cause current Control Algorithm complicated simultaneously; And adopt stagnant ring PWM Current Control, and will cause switching frequency to change and fluctuate with current changing rate, the design difficulty of filter inductance will increase greatly.
Summary of the invention
The object of the invention is to propose in order to address the above problem frequency converter burn-in test feed-back type alternating current electronic load; This frequency converter burn-in test can be realized the simulation to real load characteristic with feed-back type alternating current electronic load, and the energy that Devices to test can be attracted again contamination-freely feeds back to electrical network.
Technical scheme of the present invention is as follows:
The present invention is frequency converter burn-in test feed-back type alternating current electronic load, comprises equipment under test.The present invention also comprises the first rectification IPM module, the second rectification IPM module and dsp processor;
Described the first rectification IPM module, for fictitious load characteristic, comprises and exchanges port, DC port and control port; The interchange port of the first rectification IPM module is electrically connected to equipment under test;
Described the second rectification IPM module, for electric energy that equipment under test is absorbed feedback telegram in reply net contamination-freely, comprises and exchanges port, DC port and control port; The DC port of the second rectification IPM module is electrically connected to the DC port of the first rectification IPM module, and the interchange port of the second rectification IPM module is connected with an electric network source;
Described dsp processor comprises for generation of the EVA output port of pwm signal with for generation of the EVB output port of pwm signal; The control port communication connection of the EVA output port of dsp processor and the first rectification IPM module, the control port communication connection of the EVB output port of dsp processor and the second rectification IPM module.
More preferably, the chip model of described dsp processor is TMS320F2812.
More preferably, the present invention also comprises that the present invention also comprises the second side phase detecting module for detection of the frequency of electric network source place voltage and phase place for detection of the frequency of the interchange port voltage of the first rectification IPM module and the first side phase detecting module of phase place; Described dsp processor also comprises an I/O port and the 2nd I/O port; Described the first side phase detecting module is passed to the signal detecting the one I/O port of dsp processor; Described the second side phase detecting module is passed to the signal detecting the 2nd I/O port of dsp processor.
More preferably, the present invention also comprises interchange the first side current detection module for detection of the interchange port electric current of the first rectification IPM module, and the present invention also comprises interchange the second side current detection module for detection of electric network source place electric current; Described dsp processor also comprises an A/D port and the 2nd A/D port; Described interchange the first side current detection module is passed to the current signal detecting the one A/D port of dsp processor; Described interchange the second side current detection module is passed to the current signal detecting the 2nd A/D port of dsp processor.
More preferably, the present invention also comprises that the DC port for detection of the first rectification IPM module is electrically connected to the DC voltage detection module of the voltage at place with the DC port of the second rectification IPM module; Described dsp processor also comprises the 3rd A/D port; Described DC voltage detection module is passed to the voltage signal detecting the 3rd A/D port of dsp processor.
More preferably, the present invention also comprises fault detection module; Described dsp processor also comprises the 3rd I/O port; Fault detection module is passed to the fault-signal detecting the 3rd I/O port of dsp processor.
More preferably, the present invention also comprises man-machine interface; Described dsp processor also comprises the 4th I/O port for being connected with man-machine interface.
More preferably, the present invention also comprises memory module; Described dsp processor also comprises the SPI port for being connected with memory modules.
More preferably, the present invention also comprises power module, described power module is from the interchange port power taking of the first rectification IPM module, and by the electricity of obtaining through rectification lowering and stabilizing blood pressure treatment and supplied dsp processor, the first side phase detecting module, the second side phase detecting module, exchange the first side current detection module, exchange the second side current detection module, DC voltage detection module, fault detection module, man-machine interface and memory module.
Beneficial effect of the present invention:
1, to adopt model be that the dsp processor of TMS320F2812 is as a control core in the present invention, utilize arithmetic speed and the real-time control of its inner rich in natural resources, nanosecond, adopt modularization, transplantable thought, realize the first rectification IPM module and second control of rectification IPM module, the feedback of electric energy and man-machine friendship equate.And then the present invention is with good expansibility, be easy to standardization, automaticity is high, upgrading is convenient, maintenance is simple;
2, the introducing of the second rectification IPM module, the voltage of controlling the DC port place of the second rectification IPM module by the feedback of DC voltage detection module makes it stable, and then reach the power-balance of equipment under test, the first rectification IPM module and the second rectification IPM module, realize the unity power factor of electric energy is fed back to electric network source.
3, the present invention is realizing to the simulation of real load characteristic simultaneously, also have dependable performance, high-efficiency environment friendly, the saving energy, automaticity high, be easy to the advantages such as programming Control, be highly suitable for the burn-in test of the AC energy devices such as frequency converter.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the circuit topology figure between equipment under test, the first rectification IPM module, the second rectification IPM module and electric network source;
Fig. 3 is the circuit diagram of the first side phase detecting module or the second side phase detecting module;
Fig. 4 is for exchanging the circuit diagram of the first side current detection module or interchange the second side current detection module;
Fig. 5 is the circuit diagram of DC voltage detection module;
Fig. 6 phase sequence and lack detection circuit figure;
Fig. 7 is the partial circuit figure of power module.
Embodiment
For the present invention is described better, be now described further with accompanying drawing in conjunction with the embodiments.
The present invention is frequency converter burn-in test feed-back type alternating current electronic load.As shown in Figure 1, be a preferred embodiment of the present invention.
The present invention includes equipment under test A, the first rectification IPM module 1, the second rectification IPM module 2 and dsp processor 3.
The first rectification IPM module 1, for fictitious load characteristic, comprises and exchanges port, DC port and control port.
The second rectification IPM module 2, for electric energy that equipment under test A is absorbed feedback telegram in reply net contamination-freely, comprises and exchanges port, DC port and control port.
Dsp processor 3 comprises for generation of the EVA output port of pwm signal with for generation of the EVB output port of pwm signal.
The interchange port of the first rectification IPM module 1 is electrically connected to equipment under test A, the DC port of the first rectification IPM module 1 is electrically connected to the DC port of the second rectification IPM module 2, first control port of rectification IPM module 1 and the communication connection of the EVA output port of dsp processor 3.
The interchange port of the second rectification IPM module 2 is connected with an electric network source B, second control port of rectification IPM module 2 and the communication connection of the EVB output port of dsp processor.
For performance of the present invention is further improved, the present invention also comprises for detection of the frequency of the interchange port voltage of the first rectification IPM module 1 and the first side phase detecting module 4 of phase place, for detection of the frequency of electric network source B place voltage and the second side phase detecting module 5 of phase place, interchange the first side current detection module 6 for detection of the interchange port electric current of the first rectification IPM module 1, interchange the second side current detection module 7 for detection of electric network source B place electric current, DC port for detection of the first rectification IPM module 1 is electrically connected to the DC voltage detection module 8 of the voltage at place with the DC port of the second rectification IPM module 2, fault detection module 10, man-machine interface 11, memory module 12 and power module 9, wherein, power module 9 is from the interchange port power taking of the first rectification IPM module 1, and by the electricity of obtaining through rectification lowering and stabilizing blood pressure treatment and supplied dsp processor 3, the first side phase detecting module, 4 second side phase detecting module 5, exchange the first side current detection module 6, exchange the second side current detection module 7, DC voltage detection module 8, fault detection module 10, man-machine interface 11 and memory module 12.
Correspondingly, be the above-mentioned module of adaptation, dsp processor also comprises an I/O port, the 2nd I/O port, the 3rd I/O port and the 4th I/O port; And, an A/D port, the 2nd A/D port and the 3rd A/D port; And, SPI port.
The first side phase detecting module 4 is passed to the signal detecting the one I/O port of dsp processor 3, the second side phase detecting module 5 is passed to the signal detecting the 2nd I/O port of dsp processor 3, fault detection module 10 is passed to the fault-signal detecting the 3rd I/O port of dsp processor 3, and man-machine interface 11 is connected with the 4th I/O port communication of dsp processor 3.
Exchange the first side current detection module 6 and the current signal detecting is passed to an A/D port of dsp processor 3, exchange the second side current detection module 7 and the current signal detecting is passed to the 2nd A/D port of dsp processor 3, DC voltage detection module 8 is passed to the voltage signal detecting the 3rd A/D port of dsp processor 3.
Memory module 12 is connected with the SPI port communication of dsp processor 3.
Equipment under test A in the present invention can be frequency converter, and electric network source B can be three-phase supply.
Frequency converter burn-in test feed-back type alternating current electronic load disclosed in this invention, in process of production, the optional TMS320F2812 that uses of the chip model of dsp processor 3.
As shown in Figure 2, for equipment under test A is frequency converter, the first rectification IPM module 1, the second rectification IPM module 2 and the electric network source B circuit topology figure between this.
The first rectification IPM module 1 mainly comprises load simulation transducer, filter inductor L and exchanges the first side equivalent resistance R.Wherein, load simulation transducer comprises 6 switching tube VT1, VT2, VT3, VT4, VT5 and VT6, and these 6 switching tubes have formed a three-phase voltage type PWM rectifier bridge; Exchanging the first side equivalent resistance R is equivalent input link, contact resistance and shift zone dead band equivalent resistance.The EVA output port of dsp processor 3 is exported 6 road pwm signals, and the 1 road PWM that the grid of 6 switching tube VT1, VT2, VT3, VT4, VT5 and VT6 is accepted respectively in above-mentioned 6 road pwm signals controls.
The second rectification IPM module 2 mainly comprises combining inverter, filter inductor L ' and exchanges the second side equivalent resistance R '.Wherein, combining inverter comprises 6 switching tube VT1 ', VT2 ', VT3 ', VT4 ', VT5 ' and VT6 ', and these 6 switching tubes have formed a three-phase voltage type PWM rectifier bridge.The EVB output port of dsp processor 3 is exported 6 road pwm signals, and the 1 road PWM that the grid of 6 switching tube VT1 ', VT2 ', VT3 ', VT4 ', VT5 ' and VT6 ' is accepted respectively in above-mentioned 6 road pwm signals controls.
Intermediate capacitance C is for electric energy energy storage, and transformer is for the electrical isolation between electric network source B and the second rectification IPM module 2.
As shown in Figure 3, be the circuit diagram of the first side phase detecting module 4 or the second side phase detecting module 5.The first side phase detecting module 4 and the second side phase detecting module 5 all adopt illustrated zero cross detection circuit to realize.
When the electric energy that frequency converter is absorbed contamination-freely feeds back to electric network source B, in order to realize the voltage and current same-phase in electrical network, just must obtain by grid voltage waveform synchronizing circuit frequency and the phase place of the voltage in electrical network.The present invention adopts zero passage detection method to obtain frequency and the phase place of the voltage in electrical network.
In Fig. 3, the A phase voltage waveform of electrical network is by after voltage sensor, through resistance R 7 and R11 dividing potential drop, the voltage transformer circuit forming through the A1 part by comparer U1 and resistance R 5 again, and then the square-wave signal of the voltage same frequency in A2 part, diode D1, diode D2 and the electric network source B of process comparer U1, finally by crossing an I/O port or the 2nd I/O port of sending into DSP after optocoupler level is isolated.B phase and C phase voltage in electrical network detect its frequency and phase place by said method too.
Except detecting frequency and the phase place of above-mentioned line voltage, also need the electric parameters detecting to have the electric current of the interchange port of the first rectification IPM module 1, the electric current of electric network source B is the electric current of the interchange port of the second rectification IPM module 2.
As shown in Figure 4, exchange the first side current detection module 6 and exchange the second side current detection module 7 and all adopt and realize as the circuit of Fig. 4.
The present invention adopts Hall element to realize the electrical isolation of dsp processor 3 and the first rectification IPM module 1, the second rectification IPM module 2, and current signal is converted and sampled.Fig. 4's is alternating current sampling modulate circuit, after wherein the electric current of the interchange port of the electric current/the second rectification IPM module 2 of the interchange port of the first rectification IPM module 1 detects by sampling sensor, then through following, amplify, conditioning, filtering, amplitude limit link, with the voltage range that guarantees its output area, at 0-3V, finally delivered to an A/D port/two A/D port of dsp processor 3.
In addition, the DC port that also needs to detect the first rectification IPM module 1 is electrically connected to the voltage at place, i.e. voltage on dc-link capacitance C in Fig. 2 with the DC port of the second rectification IPM module 2.DC voltage detection module 8 adopts the DC voltage sampling modulate circuit shown in Fig. 5 to realize.The present invention adopts Hall element to realize the electrical isolation of dsp processor 3 and the first rectification IPM module 1, the second rectification IPM module 2, and voltage signal is converted and sampled.As above-mentioned, Fig. 5 is DC voltage sampling modulate circuit, wherein the voltage on dc-link capacitance C is after voltage sensor gathers, through resistance R 16 and R17, carry out dividing potential drop again, after voltage follower and low-pass filter, through amplitude limit link, make its output area at 0-3V again, then deliver to the 3rd A/D port of DSP.
For the wiring error that prevents that artificial origin from causing, cause the control of dsp processor 3 chaotic, even burn out equipment under test A, therefore designed phase sequence and lack detection circuit, as shown in Figure 6, be phase sequence and lack detection circuit figure.
Being easy to get by analysis, only there are two kinds of phase sequences in three-phase equilibrium electrical network, i.e. positive sequence ABC and negative phase-sequence CBA.When the power supply of three-phase symmetrical is during in positive sequence ABC and negative phase-sequence CBA, varying level signal can be exported by circuit of testing the phase sequence, and when positive sequence ABC, the signal of output low level is 0; When negative phase-sequence CBA, the signal of output high level is+3.3V; These two high-low signals can be supplied with dsp processor 3 and use, so that control program is adjusted and accurate operation.
Fault detection module 10 is except comprising above-mentioned phase sequence and lack detection circuit; also comprise the defencive functions such as under-voltage, overvoltage, overcurrent, short circuit, power down; by AND circuit and through light-coupled isolation; be connected to the 3rd I/O port or the interruptive port of DSP; participate in the execution of programmed algorithm, to guarantee stability of the present invention and reliability.
Dsp processor 3 is when powering on, in order to guarantee the proper reset of modules in it, the power supply of dsp processor 3 need to meet certain sequential, model of the present invention is the dsp processor 3 of TMS320F2812, it requires first to connect the core power of 1.9V, and then power on to peripheral I/O mouth 3.3V, to guarantee proper reset.As shown in Figure 7, be the partial circuit figure of power module 9, be the double power supply circuit of dsp processor 3 kernels.Adopt dual power supply output low differential pressure type power supply chip TPS70302, by the adjusting of precision resistance R18, R19, R20, R21 and R22 size, can obtain the level output needing, and by changing the height of its 7th pin incoming level, the output of Vout1 and Vout2 order just can change.
In sum, hardware system of the present invention mainly contains two parts and forms: the one, and the control circuit that the dsp processor 3 that the model of take is TMS320F2812 is core, mainly complete the execution that the signals such as the electric current that collects according to sensor, voltage, phase place complete control algolithm, and export 12 road PWM waveforms by SVPWM algorithm, to control data and failure alarm signal shows by man-machine interface simultaneously, thereby reach the object that control circuit completes energy feedback type electronic load function.Another part is to take two power conversion circuits that IPM is core, and it comprises: two PWM rectifiers, Inductor, DC bus capacitor etc., this part is mainly used in transmitting main power, completes the mutual conversion of alternating current-direct current side energy.
Two IPM that the present invention selects adopt the power drive chip that model is PS21867; grid after built-in optimization drives and holding circuit; its inner integrated function such as the driving circuit of IGBT, short-circuit protection, overload protection, overheating protection, under-voltage locking, has strengthened the reliability of system greatly.
Claims (9)
1. frequency converter burn-in test feed-back type alternating current electronic load, comprises equipment under test (A), it is characterized in that: also comprise the first rectification IPM module (1), the second rectification IPM module (2) and dsp processor (3);
Described the first rectification IPM module (1), for fictitious load characteristic, comprises and exchanges port, DC port and control port; The interchange port of the first rectification IPM module (1) is electrically connected to equipment under test (A);
Described the second rectification IPM module (2), contamination-freely feeds back to electrical network for the electric energy that equipment under test (A) is absorbed, and comprises and exchanges port, DC port and control port; The DC port of the second rectification IPM module (2) is electrically connected to the DC port of the first rectification IPM module (1), and the interchange port of the second rectification IPM module (2) is connected with an electric network source (B);
Described dsp processor (3) comprises for generation of the EVA output port of pwm signal with for generation of the EVB output port of pwm signal; The control port communication connection of the EVA output port of dsp processor (3) and the first rectification IPM module (1), the control port communication connection of the EVB output port of dsp processor (3) and the second rectification IPM module (2).
2. frequency converter burn-in test feed-back type alternating current electronic load as claimed in claim 1, is characterized in that: the chip model of described dsp processor (3) is TMS320F2812.
3. as required the frequency converter burn-in test feed-back type alternating current electronic load as described in 1, it is characterized in that:
Also comprise the frequency of interchange port voltage and the first side phase detecting module (4) of phase place for detection of the first rectification IPM module (1), also comprise for detection of electric network source (B) and locate the frequency of voltage and the second side phase detecting module (5) of phase place;
Described dsp processor (3) also comprises an I/O port and the 2nd I/O port;
Described the first side phase detecting module (4) is passed to the signal detecting the one I/O port of dsp processor (3); Described the second side phase detecting module (5) is passed to the signal detecting the 2nd I/O port of dsp processor (3).
4. frequency converter burn-in test feed-back type alternating current electronic load as claimed in claim 3, is characterized in that:
Also comprise interchange the first side current detection module (6) for detection of the interchange port electric current of the first rectification IPM module (1), also comprise interchange the second side current detection module (7) of locating electric current for detection of electric network source (B);
Described dsp processor (3) also comprises an A/D port and the 2nd A/D port;
Described interchange the first side current detection module (6) is passed to the current signal detecting the one A/D port of dsp processor (3); Described interchange the second side current detection module (7) is passed to the current signal detecting the 2nd A/D port of dsp processor (3).
5. frequency converter burn-in test feed-back type alternating current electronic load as claimed in claim 4, is characterized in that:
Also comprise the DC voltage detection module (8) that is electrically connected to the voltage at place for detection of the DC port of the first rectification IPM module (1) and the DC port of the second rectification IPM module (2);
Described dsp processor (3) also comprises the 3rd A/D port; Described DC voltage detection module (8) is passed to the voltage signal detecting the 3rd A/D port of dsp processor (3).
6. frequency converter burn-in test feed-back type alternating current electronic load as claimed in claim 5, is characterized in that:
Also comprise fault detection module (10);
Described dsp processor (3) also comprises the 3rd I/O port; Fault detection module (10) is passed to the fault-signal detecting the 3rd I/O port of dsp processor (3).
7. frequency converter burn-in test feed-back type alternating current electronic load as claimed in claim 6, is characterized in that: also comprise man-machine interface (11); Described dsp processor (3) also comprises the 4th I/O port for being connected with man-machine interface (10).
8. frequency converter burn-in test feed-back type alternating current electronic load as claimed in claim 7, is characterized in that: also comprise memory module (12); Described dsp processor (3) also comprises the SPI port for being connected with memory modules (12).
9. frequency converter burn-in test feed-back type alternating current electronic load as claimed in claim 8, it is characterized in that: also comprise power module (9), described power module (9) is from the interchange port power taking of the first rectification IPM module (1), and by the electricity of obtaining through rectification lowering and stabilizing blood pressure treatment and supplied dsp processor (3), the first side phase detecting module (4), the second side phase detecting module (5), exchange the first side current detection module (6), exchange the second side current detection module (7), DC voltage detection module (8), fault detection module (10), man-machine interface (11) and memory module (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424882.4A CN104166063A (en) | 2014-08-26 | 2014-08-26 | Feedback type alternating-current electronic load used for frequency converter aging test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424882.4A CN104166063A (en) | 2014-08-26 | 2014-08-26 | Feedback type alternating-current electronic load used for frequency converter aging test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104166063A true CN104166063A (en) | 2014-11-26 |
Family
ID=51909967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410424882.4A Pending CN104166063A (en) | 2014-08-26 | 2014-08-26 | Feedback type alternating-current electronic load used for frequency converter aging test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104166063A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596026A (en) * | 2014-12-15 | 2015-05-06 | 四川长虹电器股份有限公司 | Air-conditioner operating parameter monitoring device |
| CN104843568A (en) * | 2015-05-29 | 2015-08-19 | 西继迅达（许昌）电梯有限公司 | Digital servo elevator driver |
| CN106226632A (en) * | 2016-09-06 | 2016-12-14 | 东莞市冠达自动化设备有限公司 | A kind of motor variable-frequency driver aging testing system and method for testing thereof |
| CN107046378A (en) * | 2017-04-06 | 2017-08-15 | 哈尔滨理工大学 | A kind of two-way Z sources three-level inverter |
| CN108508379A (en) * | 2018-06-07 | 2018-09-07 | 艾乐德电子（南京）有限公司 | A kind of program control type electronic load device that can generate voltage output and test method |
| CN109444584A (en) * | 2018-11-09 | 2019-03-08 | 广州市微龙电子科技有限公司 | A kind of burn in test circuit of charging gun, device and method |
| CN113325329A (en) * | 2021-05-28 | 2021-08-31 | 讯茂科技(东莞)有限公司 | Integrated equipment for inverter power supply test by using alternating current load module |
| CN113422527A (en) * | 2021-07-02 | 2021-09-21 | 中国计量大学 | PWM rectifier type alternating current electronic load based on dead zone effect compensation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399228A (en) * | 2013-07-30 | 2013-11-20 | 苏州汇川技术有限公司 | Total power aging test circuit for current transformer or frequency transformer |
| CN103728514A (en) * | 2013-12-30 | 2014-04-16 | 北京京诚瑞达电气工程技术有限公司 | Method for diagnosing fault of low-voltage frequency converter |
| CN102508073B (en) * | 2011-11-03 | 2014-07-02 | 天津电气传动设计研究所 | Load test device for large-power frequency converter adopting front active end |
| CN203705573U (en) * | 2014-02-20 | 2014-07-09 | 海盐理想电子科技有限公司 | Energy-saving frequency converter load testing equipment |
-
2014
- 2014-08-26 CN CN201410424882.4A patent/CN104166063A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508073B (en) * | 2011-11-03 | 2014-07-02 | 天津电气传动设计研究所 | Load test device for large-power frequency converter adopting front active end |
| CN103399228A (en) * | 2013-07-30 | 2013-11-20 | 苏州汇川技术有限公司 | Total power aging test circuit for current transformer or frequency transformer |
| CN103728514A (en) * | 2013-12-30 | 2014-04-16 | 北京京诚瑞达电气工程技术有限公司 | Method for diagnosing fault of low-voltage frequency converter |
| CN203705573U (en) * | 2014-02-20 | 2014-07-09 | 海盐理想电子科技有限公司 | Energy-saving frequency converter load testing equipment |
Non-Patent Citations (1)
| Title |
|---|
| 王浩: "能量回馈型交流电子负载的研究", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596026A (en) * | 2014-12-15 | 2015-05-06 | 四川长虹电器股份有限公司 | Air-conditioner operating parameter monitoring device |
| CN104596026B (en) * | 2014-12-15 | 2017-07-11 | 四川长虹电器股份有限公司 | A kind of air conditioner operation parameters monitoring device |
| CN104843568A (en) * | 2015-05-29 | 2015-08-19 | 西继迅达（许昌）电梯有限公司 | Digital servo elevator driver |
| CN106226632A (en) * | 2016-09-06 | 2016-12-14 | 东莞市冠达自动化设备有限公司 | A kind of motor variable-frequency driver aging testing system and method for testing thereof |
| CN106226632B (en) * | 2016-09-06 | 2023-10-20 | 东莞市冠达自动化设备有限公司 | Aging test system and method for variable frequency drive of motor |
| CN107046378A (en) * | 2017-04-06 | 2017-08-15 | 哈尔滨理工大学 | A kind of two-way Z sources three-level inverter |
| CN108508379A (en) * | 2018-06-07 | 2018-09-07 | 艾乐德电子（南京）有限公司 | A kind of program control type electronic load device that can generate voltage output and test method |
| CN109444584A (en) * | 2018-11-09 | 2019-03-08 | 广州市微龙电子科技有限公司 | A kind of burn in test circuit of charging gun, device and method |
| CN113325329A (en) * | 2021-05-28 | 2021-08-31 | 讯茂科技(东莞)有限公司 | Integrated equipment for inverter power supply test by using alternating current load module |
| CN113325329B (en) * | 2021-05-28 | 2022-07-19 | 讯茂科技(东莞)有限公司 | Integrated device applied to alternating current load module and used for inverter power supply test |
| CN113422527A (en) * | 2021-07-02 | 2021-09-21 | 中国计量大学 | PWM rectifier type alternating current electronic load based on dead zone effect compensation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104166063A (en) | Feedback type alternating-current electronic load used for frequency converter aging test | |
| CN107230983B (en) | Power spring application system based on power control and control method thereof | |
| TWI458235B (en) | Wind power generation system, and power circuit and converter structure thereof | |
| CN107257140B (en) | Photovoltaic microgrid system off-grid grid-connected control method based on inverse sagging control | |
| CN104198853B (en) | A kind of wind-electricity integration test device and test method | |
| CN104270022B (en) | Photovoltaic grid connected inversion circuit, switch control circuit and control method | |
| CN106226632A (en) | A kind of motor variable-frequency driver aging testing system and method for testing thereof | |
| CN204103796U (en) | Photovoltaic DC-to-AC converter and PV air-conditioner system | |
| Elnaghi et al. | Development and implementation of two-stage boost converter for single-phase inverter without transformer for PV systems. | |
| CN201947196U (en) | Photovoltaic grid-connected inverter based on maximum power point tracking | |
| CN105958808A (en) | Control method of photovoltaic grid-connected inverter | |
| CN102882225A (en) | Photovoltaic system based plug and play power management system of user side distributed power sources | |
| CN110336479A (en) | Three level NPC inverter switching devices monitor period modulating wave Reconstruction Method on-line | |
| CN104124884A (en) | Photovoltaic inverter and photovoltaic air conditioner system | |
| CN204190642U (en) | Based on the load phase adjuster of current follow-up control | |
| CN203456879U (en) | Low-cost single-phase integrated energy feedback system | |
| CN207117488U (en) | A kind of temperature-decreased pressure reducer of low energy consumption | |
| CN107147319B (en) | Non-isolated photovoltaic grid-connected inverter, photovoltaic grid-connected power generation system and control method | |
| CN110336302A (en) | Light storage joint grid-connected system and its control method with virtual synchronous characteristic | |
| CN206429223U (en) | Oil field solves wax equipment | |
| CN107390139B (en) | Portable grid-connected converter testing device | |
| CN204103793U (en) | A kind of photovoltaic grid-connected inversion circuit and ON-OFF control circuit | |
| CN205178892U (en) | Miniwatt wind power converter who contains communication interface | |
| CN104734527A (en) | Three-phase programmable AC power supply device | |
| CN103915858B (en) | Photovoltaic micro-inverter power generation system based on multi-winding high-frequency magnetic coupling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Heng Inventor after: Bin Xiaoquan Inventor after: Chen Zhencai Inventor before: Bin Xiaoquan |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: BIN XIAOQUAN TO: ZHANG HENG BIN XIAOQUAN CHEN ZHENCAI |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141126 |