CN103944373A - Power factor correction device based on hardware and method thereof - Google Patents
Power factor correction device based on hardware and method thereof Download PDFInfo
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- CN103944373A CN103944373A CN201310329686.4A CN201310329686A CN103944373A CN 103944373 A CN103944373 A CN 103944373A CN 201310329686 A CN201310329686 A CN 201310329686A CN 103944373 A CN103944373 A CN 103944373A
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention discloses a power factor correction device based on hardware and a method thereof. The device comprises a PFC module. A complex PFC algorithm is hardware-converted into an independent peripheral of a microcontroller. With coordination of special debugging tools, a developer only needs to configure parameters, and PFC functions can be realized without programming so that a technical barrier of a PFC application is greatly reduced, development time is shortened, and reliability is more easily guaranteed with almost no software maintenance cost.
Description
Technical field
The present invention relates to a kind of hardware based power factor correcting device and method, belong to electricity field, more specifically, being specifically related to a kind of PFC module is an independent peripheral, rather than independently hardware based power factor correcting device and the method for processor.
Background technology
Power factor (PF) (Power Factor), is the relation that represents effective power and apparent power, and namely effective power is divided by the ratio of apparent power.Substantially power factor (PF) can be weighed the degree that electric power is used effectively, and when power factor (PF) value is larger, represents that its electric power utilance is higher.And Active PFC (Power Factor Correction on power supply unit, PFC) circuit operation principles is to control and adjust time and the waveform of AC current input, make it consistent as far as possible with AC-input voltage waveform, allow power factor (PF) level off to 1.This is greatly very important for power demand to the electronic equipment of some levels for, otherwise the specification that the electric power of power equipment system consumption may exceed it to be wanted to reach while designing.
The algorithm of Active PFC function is comparatively complicated, and requirement of real-time is higher.Its implementation can be summarized as three kinds, and a kind of is pure hardware mode, and a kind of is pure software mode based on microcontroller or DSP, and a kind of is the mode of software and hardware combining.
Thereby pure hardware mode need one independently chip increased cost, and flexibility is not enough.
When pure software mode realizes, due to the complexity of PFC algorithm, the coding of this algorithm, debugging and test not only can have higher specification requirement to developer, and tend to take the more development time.Pure software mode also means higher software maintenance cost, and the reliability of its code often depends on coding and tester's personal experience and professional, is not to be easy to control.
IR company has adopted the third mode, and its Electric Machine Control MCU turns to Electric Machine Control engine (MCE) by motor vector control algorithm hardware, has wherein comprised PFC function.But on framework, MCE is equivalent to an independently processor, has oneself independently program space, the program of MCE is carried out the flexibility of implementation algorithm by a motion control sequence generator.Because MCE and CPU adopt different core, MCE need to adopt special compiler and object code the Link tool, and this makes development process comparatively complicated.
Summary of the invention
The present invention is directed to the problems referred to above, a kind of hardware based power factor correcting device and method are provided, complicated PFC hardware algorithm are turned to an independent peripheral of microcontroller, coordinate special debugging acid, developer only needs configuration parameter, without programming, just can realize PFC function.The present invention reduces the technical threshold of PFC application greatly, shortens the development time, and is more easily guaranteed in reliability, almost there is no software maintenance cost.
The present invention addresses the above problem adopted technical scheme:
A kind of hardware based power factor correcting device, comprise a PFC module, described PFC module is an independent peripheral, a rather than processor independently, its control parameter is opened completely to CPU, do not need extra compilation tool and object code the Link tool, only need to just can operate on it by CPU.
Further, described PFC module comprises:
Sampled data request module, for the AC-input voltage to after DC bus-bar voltage, rectification, and request, the response of the sampling of the interchange input current after rectification, and obtain adc data;
Register module, for responding the parameter configuration of CPU to PFC peripheral hardware, and the process data during PF is regulated feeds back to CPU.Configuration parameter comprises: the parameter of each PI ring, DC bus-bar voltage reference value (VdcRef), the omnidistance active or active PFC implementation method selection of part signal;
Voltage PI module, regulates for the PI between the DC bus-bar voltage with reference to (VdcRef) and actual (Vdc);
Computing reference current module, for the calculating of the required reference current of current PI module;
Current PI module, for the PI adjusting between input current that exchanges after the rectification with reference to (IacRef) and actual (Iac);
PWM waveform generation module, for the PWM waveform output of the duty ratio that meets the requirements.
Further, described sampled data request module input Vdc_ack, Vac_ack, Iac_ack, Vdc_data, Vac_data, Iac_data, output Vdc_req, Vac_req, Iac_req, connect described PFC module-external, output Vdc_data_conv, voltpi_start connect voltage PI module, output Vac_data_conv connects computing reference current module, input Parameter_config connects register module, and output Iac_data_conv connects current PI module;
Described register module output Parameter_config connects voltage PI module, computing reference current module, current PI module and PWM waveform generation module, and output VdcRef connects voltage PI module;
Described voltage PI module output iref_start, Vpio connect computing reference current module;
Described computing reference current module output currpi_start, IacRef connect current PI module, and output end p art_apfc_mask connects PWM waveform generation module;
Described current PI module output ipi_done, Ipio connect PWM waveform generation module;
Described PWM waveform generation module output end p wm_out connects PFC module-external.
Further, a kind of power factor calibrating method, comprises the following steps:
(1) user is by on-line debugging instrument input parameter information, and CPU directly carries out parameter configuration to PFC peripheral hardware, starts the work of PFC module;
(2) ADC gathers d-c bus voltage value, rectification AC-input voltage value afterwards, and the interchange input current value after rectification, is directly transferred to PFC peripheral hardware;
(3) PFC peripheral hardware is received electric current, voltage data, automatically carries out system PF adjusting;
(4) process data of PFC peripheral hardware in simultaneously PF being regulated, by bus, passes CPU back, then feeds back to user by on-line debugging instrument, is convenient to user data are followed the tracks of, and correspondingly carry out parameter adjustment;
(5), if user need to adjust parameter, can again to PFC peripheral hardware, carry out parameter configuration by on-line debugging instrument;
(6) repeat the second to the 5th step.Finally reach the index request of user to system power factor.
Further, described PFC peripheral hardware is received electric current, voltage data, automatically carries out system PF adjusting and comprises the following steps:
It is omnidistance when active when PFC implementation method, selecting signal:
(1) ADC gathers actual DC bus voltage value, rectification AC-input voltage value afterwards, and the interchange input current value after rectification, and by these values, is directly transferred to PFC peripheral hardware;
(2) PFC peripheral hardware, according to the d-c bus voltage value with actual (Vdc) with reference to (VdcRef), carries out the PI computing of voltage, output Vpio value;
(3) PFC peripheral hardware is worth according to the AC-input voltage (Vac) after Vpio, actual rectification, and square equal (VacAvg) value of the AC-input voltage value after rectification, draws reference current (IacRef) value;
(4) PFC peripheral hardware, according to the input current value that exchanges after the rectification with reference to (IacRef) and actual (Iac), carries out the PI computing of electric current, exports Ipio value;
(5) PFC peripheral hardware, by Ipio value, through PWM generation module, is exported the PWM waveform of the duty ratio that meets the requirements, the break-make of the IGBT in control circuit;
When PFC implementation method, selecting signal is part when active:
(1) ADC gathers actual DC bus voltage value, rectification AC-input voltage value afterwards, and the interchange input current value after rectification, and by these values, is directly transferred to PFC peripheral hardware;
(2) PFC peripheral hardware, according to the d-c bus voltage value with actual (Vdc) with reference to (VdcRef), carries out the PI computing of voltage, output Vpio value;
(3) PFC peripheral hardware is worth according to the AC-input voltage (Vac) after Vpio, actual rectification, and square equal (VacAvg) value of the AC-input voltage value after rectification, draws reference current (IacRef) value;
(4) PFC peripheral hardware, according to the input current value that exchanges after the rectification with reference to (IacRef) and actual (Iac), carries out the PI computing of electric current, exports Ipio value;
(5) PFC peripheral hardware is by Ipio value, through PWM generation module;
(6) PFC peripheral hardware judges that AC-input voltage (Vac) value after rectification whether within adjustable extent, if so, exports the PWM waveform of the duty ratio that meets the requirements, the break-make of the IGBT in control circuit.If not, produce part_apfc_mask signal, mask the output of PWM waveform.
Advantage of the present invention is: what the software and hardware combining scheme of YuIR company was different is, PFC module is an independent peripheral, a rather than processor independently, its control parameter is opened completely to CPU, therefore without independent program storage and motion control sequence generator, just can realize flexibility, and without other compilation tool and object code the Link tool, develop more convenient.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.
In the accompanying drawings:
Fig. 1 is PFC inside modules block architecture diagram of the present invention;
Fig. 2 is 1MCU block architecture diagram;
Fig. 3 is that omnidistance active PFC Hardware is realized block diagram;
Fig. 4 is that the active PFC Hardware of part is realized block diagram.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Referring to figs. 1 to Fig. 4, a kind of hardware based power factor correcting device and method as shown in Figures 1 to 4, comprise a PFC module, described PFC module is an independent peripheral, a rather than processor independently, its control parameter is opened completely to CPU, does not need extra compilation tool and object code the Link tool, only need to just can operate on it by CPU.
Wherein, as shown in Figure 1, described PFC module comprises:
Sampled data request module, for the AC-input voltage to after DC bus-bar voltage, rectification, and request, the response of the sampling of the interchange input current after rectification, and obtain adc data;
Register module, for responding the parameter configuration of CPU to PFC peripheral hardware, and the process data during PF is regulated feeds back to CPU.Configuration parameter comprises: the parameter of each PI ring, DC bus-bar voltage reference value (VdcRef), the omnidistance active or active PFC implementation method selection of part signal;
Voltage PI module, regulates for the PI between the DC bus-bar voltage with reference to (VdcRef) and actual (Vdc);
Computing reference current module, for the calculating of the required reference current of current PI module;
Current PI module, for regulating with the PI exchanging between input current of actual (Iac) with reference to (IacRef);
PWM waveform generation module, for the PWM waveform output of the duty ratio that meets the requirements.
Wherein, described sampled data request module input Vdc_ack, Vac_ack, Iac_ack, Vdc_data, Vac_data, Iac_data, output Vdc_req, Vac_req, Iac_req, connect described PFC module-external, output Vdc_data_conv, voltpi_start connect voltage PI module, output Vac_data_conv connects computing reference current module, and input Parameter_config connects register module, and output Iac_data_conv connects current PI module;
Described register module output Parameter_config connects voltage PI module, computing reference current module, current PI module and PWM waveform generation module, and output VdcRef connects voltage PI module;
Described voltage PI module output iref_start, Vpio connect computing reference current module;
Described computing reference current module output currpi_start, IacRef connect current PI module, and output end p art_apfc_mask connects PWM waveform generation module;
Described current PI module output ipi_done, Ipio connect PWM waveform generation module;
Described PWM waveform generation module output end p wm_out connects PFC module-external.
As shown in Figure 2, only have a kernel in MCU, wherein PFC module only exists as an independent peripheral hardware of CPU, and PFC module do not need extra compilation tool and object code the Link tool, only need to just can operate on it by CPU.
Wherein, power factor calibrating method, comprises the following steps:
(1) user is by on-line debugging instrument input parameter information, CPU directly carries out parameter configuration to PFC peripheral hardware by data/address bus, start the work of PFC module, parameter configuration comprises carries out parameter configuration to voltage PI module, computing reference current module, current PI module and PWM generation module in PFC peripheral hardware;
(2) ADC gathers d-c bus voltage value (Vdc_data), rectification AC-input voltage value (Vac_data) afterwards, and the interchange input current value (Iac_data) after rectification, by data wire, is directly transferred to PFC peripheral hardware;
(3) PFC peripheral hardware is received above-mentioned electric current, voltage data, automatically carries out system PF(power factor (PF)) regulate;
(4) PFC peripheral hardware is simultaneously by PF(power factor (PF)) process data in regulating, by data/address bus, pass CPU back, then feed back to user by on-line debugging instrument, be convenient to user data are followed the tracks of, and correspondingly carry out parameter adjustment;
(5) if user need to adjust parameter, by on-line debugging instrument, again PFC peripheral hardware is carried out to parameter configuration;
Repeat the second to the 5th above-mentioned step.Finally reach the index request of user to system power factor.
Wherein, as shown in Figures 1 to 4, described PFC peripheral hardware is received electric current, voltage data, automatically carries out system PF adjusting and comprises the following steps:
It is omnidistance when active when PFC implementation method, selecting signal:
ADC gathers the AC-input voltage value (Vac_data) after actual DC bus voltage value (Vdc_data), rectification, and the interchange input current value (Iac_data) after rectification, and by these values, by data wire, is directly transferred to PFC module;
The actual DC bus voltage value (Vdc_data) that in PFC module, voltage PI module collects according to the DC bus-bar voltage reference value (VdcRef) of register module output and sampled data request module, carry out the PI computing of voltage, output Vpio value is to computing reference current module;
In PFC module, calculate reference current module according to the AC-input voltage value (Vac_data) after Vpio, actual rectification, and square all (VacAvg) of the AC-input voltage value (Vac_data) after rectification is worth the interchange input current reference value (IacRef) after rectification and exports to current PI module;
In PFC module, current PI module, according to exchanging input current with reference to (IacRef) value and actual rectification electric current input value (Iac_data) afterwards, is carried out the PI computing of electric current, and output Ipio value is to PWM generation module;
In PFC module, PWM generation module, according to Ipio value, is exported the PWM waveform of the duty ratio that meets the requirements to PFC module-external, the break-make of the IGBT in control circuit;
When PFC implementation method, selecting signal is part when active:
ADC gathers the AC-input voltage value (Vac_data) after actual DC bus voltage value (Vdc_data), rectification, and the interchange input current value (Iac_data) after rectification, and by these values, by data wire, is directly transferred to PFC module;
In PFC module, voltage PI module, according to reference to (VdcRef) and actual d-c bus voltage value (Vdc_data), is carried out the PI computing of voltage, and output Vpio value is to computing reference current module;
In PFC module, calculate reference current module according to the AC-input voltage value (Vac_data) after Vpio, actual rectification, and the AC-input voltage value (Vac_data) after rectification square equal (VacAvg) is worth reference current value (IacRef);
In PFC module current PI module according to exchange input current with reference to (IacRef) value with after actual rectification, exchange input current value (Iac_data), carry out the PI computing of electric current, export Ipio value to PWM generation module;
In PFC module, PWM generation module judges that AC-input voltage value (Vac_data) after rectification is whether within adjustable extent, if, according to Ipio value output, meet the requirements the PWM waveform of duty ratio to PFC module-external, the break-make of the IGBT in control circuit.If not, computing reference current module produces part_apfc_mask signal, masks the output of PWM waveform.
In sum, power factor correcting device of the present invention and method, a peripheral hardware using PFC module as CPU, rather than using PFC module as a processor independently, therefore without other compiler and object code the Link tool, develop more convenient.
The foregoing is only the preferred embodiments of the present invention, the present invention includes but be not limited to this example, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a hardware based power factor correcting device, comprise a PFC module, it is characterized in that, described PFC module is an independent peripheral, a rather than processor independently, its control parameter is opened completely to CPU, does not need extra compilation tool and object code the Link tool, only need to just can operate on it by CPU.
2. PFC module according to claim 1, is characterized in that, described PFC module comprises:
Sampled data request module, for the AC-input voltage to after DC bus-bar voltage, rectification, and request, the response of the sampling of the interchange input current after rectification, and obtain adc data;
Register module, for responding the parameter configuration of CPU to PFC peripheral hardware, and the process data during PF is regulated feeds back to CPU.Configuration parameter comprises: the parameter of each PI ring, DC bus-bar voltage reference value (VdcRef), the omnidistance active or active PFC implementation method selection of part signal;
Voltage PI module, regulates for the PI between the DC bus-bar voltage with reference to (VdcRef) and actual (Vdc);
Computing reference current module, for the calculating of the required reference current of current PI module;
Current PI module, for the PI adjusting between input current that exchanges after the rectification with reference to (IacRef) and actual (Iac);
PWM waveform generation module, for the PWM waveform output of the duty ratio that meets the requirements.
3. PFC module according to claim 1 and 2, it is characterized in that, described sampled data request module input Vdc_ack, Vac_ack, Iac_ack, Vdc_data, Vac_data, Iac_data, output Vdc_req, Vac_req, Iac_req, connect described PFC module-external, output Vdc_data_conv, voltpi_start connect voltage PI module, output Vac_data_conv connects computing reference current module, input Parameter_config connects register module, and output Iac_data_conv connects current PI module;
Described register module output Parameter_config connects voltage PI module, computing reference current module, current PI module and PWM waveform generation module, and output VdcRef connects voltage PI module;
Described voltage PI module output iref_start, Vpio connect computing reference current module;
Described computing reference current module output currpi_start, IacRef connect current PI module, and output end p art_apfc_mask connects PWM waveform generation module;
Described current PI module output ipi_done, Ipio connect PWM waveform generation module; Described PWM waveform generation module output end p wm_out connects PFC module-external.
4. a power factor calibrating method, is characterized in that, comprises the following steps:
(1) user is by on-line debugging instrument input parameter information, and CPU directly carries out parameter configuration to PFC peripheral hardware, starts the work of PFC module;
(2) ADC gathers d-c bus voltage value, rectification AC-input voltage value afterwards, and the interchange input current value after rectification, is directly transferred to PFC peripheral hardware;
(3) PFC peripheral hardware is received electric current, voltage data, automatically carries out system PF adjusting;
(4) process data of PFC peripheral hardware in simultaneously PF being regulated, by bus, passes CPU back, then feeds back to user by on-line debugging instrument, is convenient to user data are followed the tracks of, and correspondingly carry out parameter adjustment;
(5), if user need to adjust parameter, can again to PFC peripheral hardware, carry out parameter configuration by on-line debugging instrument;
(6) repeat the second to the 5th step.Finally reach the index request of user to system power factor.
5. the power factor calibrating method of hardware according to claim 4, is characterized in that, described PFC peripheral hardware is received electric current, voltage data, automatically carries out system PF and regulates and comprise the following steps:
It is omnidistance when active when PFC implementation method, selecting signal:
(1) ADC gathers actual DC bus voltage value, rectification AC-input voltage value afterwards, and the interchange input current value after rectification, and by these values, is directly transferred to PFC peripheral hardware;
(2) PFC peripheral hardware, according to the d-c bus voltage value with actual (Vdc) with reference to (VdcRef), carries out the PI computing of voltage, output Vpio value;
(3) PFC peripheral hardware is worth according to the AC-input voltage (Vac) after Vpio, actual rectification, and square equal (VacAvg) value of the AC-input voltage value after rectification, draws reference current (IacRef) value;
(4) PFC peripheral hardware, according to the input current value that exchanges after the rectification with reference to (IacRef) and actual (Iac), carries out the PI computing of electric current, exports Ipio value;
(5) PFC peripheral hardware, by Ipio value, through PWM generation module, is exported the PWM waveform of the duty ratio that meets the requirements, the break-make of the IGBT in control circuit;
When PFC implementation method, selecting signal is part when active:
(1) ADC gathers actual DC bus voltage value, rectification AC-input voltage value afterwards, and the interchange input current value after rectification, and by these values, is directly transferred to PFC peripheral hardware;
(2) PFC peripheral hardware, according to the d-c bus voltage value with actual (Vdc) with reference to (VdcRef), carries out the PI computing of voltage, output Vpio value;
(3) PFC peripheral hardware is worth according to the AC-input voltage value (Vac) after Vpio, actual rectification, and square equal (VacAvg) value of the AC-input voltage value after rectification, draws reference current (IacRef) value;
(4) PFC peripheral hardware, according to the input current value that exchanges after the rectification with reference to (IacRef) and actual (Iac), carries out the PI computing of electric current, exports Ipio value;
(5) PFC peripheral hardware is by Ipio value, through PWM generation module;
(6) PFC peripheral hardware judges that AC-input voltage (Vac) value after rectification whether within adjustable extent, if so, exports the PWM waveform of the duty ratio that meets the requirements, the break-make of the IGBT in control circuit.If not, produce part_apfc_mask signal, mask the output of PWM waveform.
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| CN114234362A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Control method and device for judging aging of components and air conditioner |
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| CN201509063U (en) * | 2009-09-25 | 2010-06-16 | 北京和利时自动化驱动技术有限公司 | Switch controller |
| CN102624212A (en) * | 2011-01-28 | 2012-08-01 | 索尼公司 | Control device, control method, and power supply device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201509063U (en) * | 2009-09-25 | 2010-06-16 | 北京和利时自动化驱动技术有限公司 | Switch controller |
| CN102624212A (en) * | 2011-01-28 | 2012-08-01 | 索尼公司 | Control device, control method, and power supply device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114234362A (en) * | 2021-12-27 | 2022-03-25 | 珠海格力电器股份有限公司 | Control method and device for judging aging of components and air conditioner |
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Effective date of registration: 20191030 Address after: 314100 east side of No.33, sanjibang, Huitong village, Huimin street, Jiashan County, Jiaxing City, Zhejiang Province Patentee after: Jiashan Lianrui Electronic Technology Co., Ltd Address before: 518054 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation zone before Bay Road No. 1 building 201 room A (located in Shenzhen Qianhai business secretary Co. Ltd.) Patentee before: SHENZHEN BOYONG TECHNOLOGY CO., LTD. |