CN202737463U - Active filtering device with energy-saving, consumption-reducing and harmonic-treating functions - Google Patents
Active filtering device with energy-saving, consumption-reducing and harmonic-treating functions Download PDFInfo
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- CN202737463U CN202737463U CN2012202571564U CN201220257156U CN202737463U CN 202737463 U CN202737463 U CN 202737463U CN 2012202571564 U CN2012202571564 U CN 2012202571564U CN 201220257156 U CN201220257156 U CN 201220257156U CN 202737463 U CN202737463 U CN 202737463U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses an active filtering device with energy-saving, consumption-reducing and harmonic-treating functions. The active filtering device is mainly composed of a cabinet body, a main circuit module, a converter module, an output reactor, an output filtering loop, a control circuit module and an HRT-SPF control module, wherein a main circuit breaker, an alternating current contactor and a high-speed fuse are connected in series through cables, the converter module is mainly composed of an IPM module, an IPM module triggering board, a radiator, a ceramic resistor, as well as a direct current-side capacitor set, a pre-charge switching loop, a capacitor discharge loop and an output current transformer which are fixedly installed on an upper portion of a front side of a partition board inside the cabinet body. The active filtering device of the utility model is advantageous in that: the active filtering device can rapidly and rapidly filter harmonics with high efficiency; the active filtering device can not only perform filtering and reactive compensation, but also can effectively reduce the loss of equipment, meeting national standards; the active filtering device is of high-degree controllability and fast response; and further, the active filtering device is not affected by impedance of a system, so the active filtering device can eliminate the risk of resonance with the impedance of the system.
Description
Technical field
The utility model relates to the technical field of power device, more particularly relates to the technical field that electric power is used filter.
Background technology
Development along with power electronic technology, but nonlinear load is rolled up, because various power electronic device are used widely in industrial production, when working, all can produce a large amount of mains by harmonics such as nonlinear loads such as frequency converter, soft initiators, this harmonic wave can have a strong impact on the running quality of electrical network, strengthens for electric energy consumption.Therefore, just need to adopt filter to eliminate this harmonic wave, the defective of existing its existence of filter is, the rejection rate of harmonic wave is not ideal enough, can not accomplish fast, carry out efficiently the filtering operation, being difficult to the real-time tracking mains by harmonics changes, general filter only has filter function, and can not carry out reactive power compensation, can not to moment to being higher than the rated capacity compensation of shoving, thereby reach the purpose of eliminating flickering and voltage fluctuation, it can not adapt to the requirement to modern power network filtering fully.
The utility model content
The purpose of this utility model is exactly to provide a kind of energy-saving and cost-reducing in order to solve above-mentioned deficiency, harmonic filtration is quick and efficient is high, can change by the real-time tracking mains by harmonics, fast response time, has no-power compensation function, can be higher than the rated capacity compensation of shoving to moment, eliminate the active filter of the energy-saving and cost-reducing harmonic wave control of holding concurrently of having of flickering and voltage fluctuation.
The technical solution that the utility model adopts in order to solve the problems of the technologies described above is as follows:
Active filter with the energy-saving and cost-reducing harmonic wave control of holding concurrently, it is mainly by cabinet, main circuit module, converter module, out put reactor, the output filtering loop, control circuit module and HRT-SPF control module consist of, be provided with longitudinal baffle in the described cabinet, described main circuit module is mainly by the main circuit breaker that is fixedly mounted on the positive middle side part of cabinet internal partition, A.C. contactor, fast acting fuse, pre-charge resistance, the electric power incoming line terminal consists of, main circuit breaker wherein, A.C. contactor and fast acting fuse connect by cable series connection, pre-charge resistance also connects with A.C. contactor by cable, electric power incoming line terminal one end is electrically connected with the end of incoming cables of main circuit breaker, and another section is reserved; Described converter module is mainly by the IPM module, IPM module trigger board, radiator, ceramic resistor, and the dc bus capacitor device group that is fixedly mounted on the positive upper lateral part of cabinet internal partition, precharge switching loop, capacitor discharge loop and output current transformer form, wherein IPM module trigger board is fixed on the IPM module, the IPM module is fixed on the dividing plate by radiator, described dc bus capacitor device group is made of three dc bus capacitor devices, ceramic resistor is parallel to dc bus capacitor device two ends, the IPM module, the dc bus capacitor device, precharge switching loop, be electrically connected by cable between the capacitor discharge loop, output current transformer is punching, it directly is enclosed within on the bus, and the secondary terminals sampled signal is electrically connected with operation board in the control circuit module; Described out put reactor is fixedly mounted on the positive side lower part of dividing plate, and its end of incoming cables is electrically connected with fast acting fuse in the main circuit module by cable, and its leading-out terminal is electrically connected with IPM module in the converter module by cable; Described output filtering loop mainly is comprised of the High frequency filter circuit breaker, High frequency filter resistance and the HF filtering capacitor that are fixedly mounted on dividing plate dorsal part middle part, wherein High frequency filter circuit breaker end of incoming cables is electrically connected with the leading-out terminal of main circuit breaker in High frequency filter resistance and the main circuit module respectively by cable, between High frequency filter resistance and the HF filtering capacitor by cable and connect; Described control circuit module is mainly by the master control borad that is fixedly mounted on dividing plate dorsal part top, operation board, trigger board, the master control display unit, DC power supplier, midget relay, the 1P miniature circuit breaker, the secondary fuse, 3P miniature circuit breaker and control transformer consist of, wherein master control borad is embedded in the master control display unit, master control borad, operation board, trigger board, DC power supplier, the master control display unit is electrically connected mutually by the network control cable, midget relay is electrically connected by cable with the 1P miniature circuit breaker, the 3P miniature circuit breaker is arranged at the lower end of secondary fuse, the secondary fuse is set to three, its each up and down two pins be electrically connected to respectively on the pin of control transformer and 3P miniature circuit breaker; Described HRT-SPF control module mainly is made of the core control system and the hardware circuit that are fixed on the dividing plate, and wherein core control system is comprised of the high-performance 32-bit fixed DSP TMS320LF2812 chip of mutual electrical connection and piece of CPLD EPM7256AE chip and peripheral circuit; Hardware circuit is comprised of data acquisition circuit, sync detection circuit, PWM isolated drive circuit, hardware protection circuit, I/O interface circuit, telecommunication circuit and the power circuit of mutual electrical connection.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:
1, can be rapidly, filtering harmonic wave effectively, efficient is high, filtering 2-50 subharmonic effectively, rejection rate can reach 97%, response time＜8ms, the housing degree of protection reaches IP40;
2, not only can filtering but also can carry out reactive power compensation, the rated capacity compensation of shoving be can be higher than moment, thereby flickering and voltage fluctuation eliminated;
3, can judge voluntarily by equipment and obtain the optimum filtering effect, and can automatically adapt to the impedance variation of electrical network;
4, can change by the real-time tracking mains by harmonics, have high controllability and fast-response, compensation performance is not subjected to the mains frequency influence of fluctuations, and filtering characteristic is not subjected to the impact of system impedance, can eliminate the danger with system impedance generation resonance;
5, can effectively reduce equipment loss, satisfy national standard, have high controllability and fast-response, not be subjected to the impact of system impedance, can eliminate the danger with system impedance generation resonance;
6, Chinese and English, graphic lcd show the clear close friend of man-machine interface;
7, have the self diagnosis of improving and function for monitoring, can specifically locate fault, convenient debugging;
8, have the advantages such as reasonable in design, function admirable, have good market popularization value.
Description of drawings
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is backsight structural representation of the present utility model;
Fig. 3 is the instruction flow chart of software in the utility model operation board;
Fig. 4 is the structured flowchart of the HRT-SPF control module in the utility model;
Fig. 5 is the circuit diagram of HRT-SPF control module in the utility model;
Fig. 6 is the schematic diagram of workflow of the present utility model.
Among Fig. 1 and Fig. 2: the 1-shell, the 2-electricity-saving lamp, the 3-axial flow blower, the 4-travel switch, the 5-ceramic resistor, 6-dc bus capacitor device group, 7-IPM module trigger board, the 8-IPM module, the 9-radiator, the 10-sampling current transformer, the 11-A.C. contactor, the 12-fast acting fuse, 13-High frequency filter circuit breaker, the 14-main circuit breaker, the 15-out put reactor, 16-electric power incoming line terminal, the 17-midget relay, the 18-1P miniature circuit breaker, 19-secondary fuse, the 20-3P miniature circuit breaker, the 21-control transformer, the 22-DC power supplier, the 23-operation board, 24-High frequency filter resistance, the 25-pre-charge resistance, 26-direct-current discharge resistance, 27-zero line row, the 28-HF filtering capacitor.
Embodiment
Extremely shown in Figure 6 by Fig. 1, active filter with the energy-saving and cost-reducing harmonic wave control of holding concurrently, it is mainly by cabinet, main circuit module, converter module, out put reactor, the output filtering loop, control circuit module and HRT-SPF control module consist of, be provided with longitudinal baffle in the described cabinet, described main circuit module is mainly by the main circuit breaker that is fixedly mounted on the positive middle side part of cabinet internal partition, A.C. contactor, fast acting fuse, pre-charge resistance, the electric power incoming line terminal consists of, main circuit breaker wherein, A.C. contactor and fast acting fuse connect by cable series connection, pre-charge resistance also connects with A.C. contactor by cable, electric power incoming line terminal one end is electrically connected with the end of incoming cables of main circuit breaker, and another section is reserved; Described converter module is mainly by the IPM module, IPM module trigger board, radiator, ceramic resistor, and the dc bus capacitor device group that is fixedly mounted on the positive upper lateral part of cabinet internal partition, precharge switching loop, capacitor discharge loop and output current transformer form, wherein IPM module trigger board is fixed on the IPM module, the IPM module is fixed on the dividing plate by radiator, described dc bus capacitor device group is made of three dc bus capacitor devices, ceramic resistor is parallel to dc bus capacitor device two ends, the IPM module, the dc bus capacitor device, precharge switching loop, be electrically connected by cable between the capacitor discharge loop, output current transformer is punching, it directly is enclosed within on the bus, and the secondary terminals sampled signal is electrically connected with operation board in the control circuit module; Converter module is the part of most critical in the complete machine work, has played the effect of active inversion and systems exchange energy.Described out put reactor is fixedly mounted on the positive side lower part of dividing plate, and its end of incoming cables is electrically connected with fast acting fuse in the main circuit module by cable, and its leading-out terminal is electrically connected with IPM module in the converter module by cable; It mainly plays the energy exchange effect with system, and parameters has directly determined service behaviour, is that converter module energy output current is to the important interface unit of system.Described output filtering loop mainly is comprised of the High frequency filter circuit breaker, High frequency filter resistance and the HF filtering capacitor that are fixedly mounted on dividing plate dorsal part middle part, wherein High frequency filter circuit breaker end of incoming cables is electrically connected with the leading-out terminal of main circuit breaker in High frequency filter resistance and the main circuit module respectively by cable, between High frequency filter resistance and the HF filtering capacitor by cable and connect; Described control circuit module is mainly by the master control borad that is fixedly mounted on dividing plate dorsal part top, operation board, trigger board, the master control display unit, DC power supplier, midget relay, the 1P miniature circuit breaker, the secondary fuse, 3P miniature circuit breaker and control transformer consist of, wherein master control borad is embedded in the master control display unit, master control borad, operation board, trigger board, DC power supplier, the master control display unit is electrically connected mutually by the network control cable, midget relay is electrically connected by cable with the 1P miniature circuit breaker, the 3P miniature circuit breaker is arranged at the lower end of secondary fuse, the secondary fuse is set to three, its each up and down two pins be electrically connected to respectively on the pin of control transformer and 3P miniature circuit breaker; Operation board, its inner embedding has software, and its workflow is: 1. pair system carries out initialization, and is normal with the init state that guarantees high speed digital signal processor (DSP) and all peripheral hardwares; 2. system enters into the main program circulation, and system carries out first fault self-checking, if fault is arranged, carries out troubleshooting, guarantees system safety, reliably operation; If system's fault-free occurs, then wait for the generation that the synchronized sampling control signal is interrupted, system enters into corresponding interrupt service routine and carries out frequency detecting and A/D conversion etc.; 3. carry out DC voltage control, instruction current calculating, soft start control etc., if start-up course then adopts soft starting mode; Otherwise directly export pwm control signal, finished the control to a sampling period this moment.Then program is returned, and the loop control of next time sampling can realize the loop control to system.Described HRT-SPF control module mainly is made of the core control system and the hardware circuit that are fixed on the dividing plate, wherein core control system is comprised of the high-performance 32-bit fixed DSP TMS320LF2812 chip of mutual electrical connection and piece of CPLD EPM7256AE chip and peripheral circuit, it has adopted the digitization system take DSP+CPLD as core, control system real-time that can implement device and the requirement of accuracy have directly determined performance index and the compensation effect of device; Hardware circuit is comprised of data acquisition circuit, sync detection circuit, PWM isolated drive circuit, hardware protection circuit, I/O interface circuit, telecommunication circuit and the power circuit of mutual electrical connection.The control circuit module is to the control of the integral body of HRT-SPF control module work, and the HRT-SPF control module is to inject offset current with the harmonic current opposite sign but equal magnitude by the equipment coupling part of being incorporated into the power networks, and current harmonics is compensated.Data acquisition circuit in the HRT-SPF control module mainly is responsible for the processing of the analog signal conversion such as voltage, electric current, because detected electric current and voltage numerical quantity is larger, numerical value far surpasses the input reference signal that DSP allows, need to reduce these analog electrical signals, and the magnitude of current is transformed to voltage, bipolar signal becomes unipolar signal, and the line level of going forward side by side coupling is sent into DSP after the A/D conversion and carried out computing.Its implementation is: voltage, current signal (comprising 2 DC bus-bar voltage, 3 load currents and 3 compensator output currents) are after the conversion of current mode Hall element, form and the proportional voltage signal of original signal at sampling with high precision resistance, again after filtering, isolation, level translation, obtain 0～3V analog input voltage, process finally by entering in the DSP after 12 A/D conversion.Sync detection circuit major function in the HRT-SPF control module is to produce the synchronous working pulse signal identical with line voltage frequency, phase place and the A/D of 256 times of electrical network fundamental frequencies adopts enabling signal synchronously.Because the frequency of electrical network always fluctuates up and down at 50Hz, therefore the accuracy for guaranteeing that electrical network parameter calculates needs the variation of Tracking Frequency of Power Grids in measuring process, revises at any time the sampling period of A/D, and is constant to guarantee sampling rate.Sync detection circuit essence is a zero passage voltage comparator, one phase power supply ac input signal is transformed into square-wave signal, realize the phase-detection of three-phase mains voltage, utilize the saltus step of square-wave signal to trigger DSP generation interruption, change the moment in order to calculate the A/D of mains frequency and control DSP.PWM isolated drive circuit in the HRT-SPF control module is converted to electric drive pulse signal with the optical drive pulse signal that the HRT-SPF control module produces; after processing through power amplification simultaneously; final output 6 road pwm signals; realization is to the driving control of inverter main circuit IGBT; when the faults such as overcurrent, short circuit occurring when device; block immediately the driving pulse of IGBT, and send guard signal to core control system.Hardware protection circuit in the HRT-SPF control module has guaranteed to install reliable and stable work.When compensation arrangement is short-circuited, when overcurrent, overvoltage, overtemperature, the fault such as under-voltage; fault-signal blocks the PWM drive pulse signal after processing through failure detector circuit immediately, and the processing such as report to the police; whole apparatus system is automatically out of service, with protection system safety.
Various electric elements described in the utility model all are prior aries, and they all can be bought in market and obtain; Described various circuit also is the normal circuit that uses in the industry, all belongs to by reference to the accompanying drawings the general knowledge technology of staff in this area; Therefore, need not to describe in detail at this.
Workflow is: the current signal (CT signal) and the voltage signal (PT signal) that gather distribution system by the data sampling unit, detect the voltage and current signal of target compensation by instrument transformer, real-time current and voltage signal are sent to the MICROCOMPUTER PROCESSING center of ordering calculation plate; Then give the command signal that control system calculates offset current through after the conversion process, the first energy storage before system's operation of DC power supply part is boosted, after energy storage is complete signal (DC signal) is fed back to the MICROCOMPUTER PROCESSING center of ordering calculation plate, by comparison and computing, the ordering calculation buttress sends triggering command for the trigger board of inverter according to the harmonic content in the distribution system and size, it is identical with harmonic current size in the distribution system that inverter will produce, the inverter current of opposite direction is transported in the distribution system, with the harmonic wave in the distribution system, idle, the deleterious current components such as negative phase-sequence are offset.The grid side three-phase current is the symmetrical sine ripple, and neutral line current is 0, realizes administering harmonic wave, improves the purpose of the quality of power supply, finally obtains the sine power supply of expecting.
This active filter is a kind of new harmonic abatement equipment of dynamic filtering harmonic wave, it is by monitoring electrical network real-time harmonic situation, online calculate contained harmonic component, produce corresponding control signal, the control inverter circuit, the harmonic current injection of equal and opposite in direction, opposite direction in electrical network, is reached the effect of promptly dynamically following the tracks of the filtering harmonic wave.
Claims (1)
1. the active filter that has the energy-saving and cost-reducing harmonic wave control of holding concurrently, it is characterized in that: it is mainly by cabinet, main circuit module, converter module, out put reactor, the output filtering loop, control circuit module and HRT-SPF control module consist of, be provided with longitudinal baffle in the described cabinet, described main circuit module is mainly by the main circuit breaker that is fixedly mounted on the positive middle side part of cabinet internal partition, A.C. contactor, fast acting fuse, pre-charge resistance, the electric power incoming line terminal consists of, main circuit breaker wherein, A.C. contactor and fast acting fuse connect by cable series connection, pre-charge resistance also connects with A.C. contactor by cable, electric power incoming line terminal one end is electrically connected with the end of incoming cables of main circuit breaker, and another section is reserved; Described converter module is mainly by the IPM module, IPM module trigger board, radiator, ceramic resistor, and the dc bus capacitor device group that is fixedly mounted on the positive upper lateral part of cabinet internal partition, precharge switching loop, capacitor discharge loop and output current transformer form, wherein IPM module trigger board is fixed on the IPM module, the IPM module is fixed on the dividing plate by radiator, described dc bus capacitor device group is made of three dc bus capacitor devices, ceramic resistor is parallel to dc bus capacitor device two ends, the IPM module, the dc bus capacitor device, precharge switching loop, be electrically connected by cable between the capacitor discharge loop, output current transformer is punching, it directly is enclosed within on the bus, and the secondary terminals sampled signal is electrically connected with operation board in the control circuit module; Described out put reactor is fixedly mounted on the positive side lower part of dividing plate, and its end of incoming cables is electrically connected with fast acting fuse in the main circuit module by cable, and its leading-out terminal is electrically connected with IPM module in the converter module by cable; Described output filtering loop mainly is comprised of the High frequency filter circuit breaker, High frequency filter resistance and the HF filtering capacitor that are fixedly mounted on dividing plate dorsal part middle part, wherein High frequency filter circuit breaker end of incoming cables is electrically connected with the leading-out terminal of main circuit breaker in High frequency filter resistance and the main circuit module respectively by cable, between High frequency filter resistance and the HF filtering capacitor by cable and connect; Described control circuit module is mainly by the master control borad that is fixedly mounted on dividing plate dorsal part top, operation board, trigger board, the master control display unit, DC power supplier, midget relay, the 1P miniature circuit breaker, the secondary fuse, 3P miniature circuit breaker and control transformer consist of, wherein master control borad is embedded in the master control display unit, master control borad, operation board, trigger board, DC power supplier, the master control display unit is electrically connected mutually by the network control cable, midget relay is electrically connected by cable with the 1P miniature circuit breaker, the 3P miniature circuit breaker is arranged at the lower end of secondary fuse, the secondary fuse is set to three, its each up and down two pins be electrically connected to respectively on the pin of control transformer and 3P miniature circuit breaker; Described HRT-SPF control module mainly is made of the core control system and the hardware circuit that are fixed on the dividing plate, and wherein core control system is comprised of the high-performance 32-bit fixed DSP TMS320LF2812 chip of mutual electrical connection and piece of CPLD EPM7256AE chip and peripheral circuit; Hardware circuit is comprised of data acquisition circuit, sync detection circuit, PWM isolated drive circuit, hardware protection circuit, I/O interface circuit, telecommunication circuit and the power circuit of mutual electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202571564U CN202737463U (en) | 2012-06-01 | 2012-06-01 | Active filtering device with energy-saving, consumption-reducing and harmonic-treating functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202571564U CN202737463U (en) | 2012-06-01 | 2012-06-01 | Active filtering device with energy-saving, consumption-reducing and harmonic-treating functions |
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| Publication Number | Publication Date |
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| CN202737463U true CN202737463U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012202571564U Withdrawn - After Issue CN202737463U (en) | 2012-06-01 | 2012-06-01 | Active filtering device with energy-saving, consumption-reducing and harmonic-treating functions |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457264A (en) * | 2012-06-01 | 2013-12-18 | 湖北西高电气设备有限公司 | Active power filter device with energy saving, consumption reducing and harmonic suppression |
| CN104466987A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Novel intelligent dynamic hybrid reactive power compensation device |
| CN105722351A (en) * | 2015-12-30 | 2016-06-29 | 北京金日创科技股份有限公司 | Frequency conversion speed regulation cabinet |
| CN106654963A (en) * | 2016-11-03 | 2017-05-10 | 合肥华义电气科技有限公司 | High-voltage cable power distribution control system |
| CN107332246A (en) * | 2017-08-29 | 2017-11-07 | 安徽三和电力技术有限公司 | Electric terminal wireless temperature measuring device system and its dynamic filter compensation method |
| CN112344996A (en) * | 2020-11-16 | 2021-02-09 | 广州瑞鑫智能制造有限公司 | Air compression station based on monitoring of Internet of things |
-
2012
- 2012-06-01 CN CN2012202571564U patent/CN202737463U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457264A (en) * | 2012-06-01 | 2013-12-18 | 湖北西高电气设备有限公司 | Active power filter device with energy saving, consumption reducing and harmonic suppression |
| CN103457264B (en) * | 2012-06-01 | 2015-07-08 | 湖北西高电气设备有限公司 | Active power filter device with energy saving, consumption reducing and harmonic suppression |
| CN104466987A (en) * | 2014-12-18 | 2015-03-25 | 江苏方程电力科技有限公司 | Novel intelligent dynamic hybrid reactive power compensation device |
| CN105722351A (en) * | 2015-12-30 | 2016-06-29 | 北京金日创科技股份有限公司 | Frequency conversion speed regulation cabinet |
| CN106654963A (en) * | 2016-11-03 | 2017-05-10 | 合肥华义电气科技有限公司 | High-voltage cable power distribution control system |
| CN107332246A (en) * | 2017-08-29 | 2017-11-07 | 安徽三和电力技术有限公司 | Electric terminal wireless temperature measuring device system and its dynamic filter compensation method |
| CN112344996A (en) * | 2020-11-16 | 2021-02-09 | 广州瑞鑫智能制造有限公司 | Air compression station based on monitoring of Internet of things |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130213 Effective date of abandoning: 20150708 |
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| RGAV | Abandon patent right to avoid regrant |