CN106357102A - Busbar voltage control method for brushless direct current motor-driven frequency converter - Google Patents
Busbar voltage control method for brushless direct current motor-driven frequency converter Download PDFInfo
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- CN106357102A CN106357102A CN201610873276.XA CN201610873276A CN106357102A CN 106357102 A CN106357102 A CN 106357102A CN 201610873276 A CN201610873276 A CN 201610873276A CN 106357102 A CN106357102 A CN 106357102A
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- voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses a busbar voltage control method for a brushless direct current motor-driven frequency converter. The method comprises the following steps: turning on a PFC; setting a target voltage saturation rate Ratio-target and reading an actual busbar voltage value Ed; calculating to obtain an actual voltage saturation rate Ratio-v-e; calculating to obtain a target busbar voltage value Ed-target; adjusting the PFC; changing the actual busbar voltage value Ed so as to enable the actual busbar voltage value Ed to approach the target busbar voltage value Ed-target. The busbar voltage control method can be used to adjust voltage in real time according to a load of a motor.
Description
Technical field
The present invention relates to brshless DC motor drives Frequency Converter Control technical field, it is especially a kind of for brushless direct-current
The busbar voltage control method of Motor drive converter.
Background technology
In the sine wave drive of brshless DC motor (hereinafter referred to as motor), generally use pfc technology to improve motor
Busbar voltage (hereinafter referred to as voltage).Under normal circumstances, first open pfc, the raising then as motor speed or load increase
Plus, power of motor is also gradually increased, and phase voltage also increases therewith.When phase voltage increases above the situation of supply voltage, reach
To voltage-saturated condition, that is, no matter how LOAD FREQUENCY changes, and this voltage all keeps invariable.When motor is in higher load condition
During lower work, this voltage has obtained effective utilization, and the utilization rate of voltage is higher.And work as motor and use under low load condition
When it is only necessary to relatively low voltage can normal work, this not only causes the waste of this voltage, and can lead to power device
Thermal losses increase, the radiating not only bad for converter leads to problem of temperature rise, and next is unfavorable for the minimizing of system energy consumption.Cause
This, for these reasons it would be highly desirable to need a kind of busbar voltage control method driving converter for brshless DC motor, this mother
Line voltage control method can according to the load of motor real-time adjustment voltage, to solve the above problems.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of busbar voltage driving converter for brshless DC motor
Control method, this busbar voltage control method can according to the load of motor real-time adjustment voltage.
The technical scheme is that, a kind of busbar voltage controlling party driving converter for brshless DC motor is provided
Method, comprises the following steps,
(1), open pfc；
(2), target setting voltage saturation rate ratio_target and reading actual bus voltage value ed；
(3), it is calculated virtual voltage saturation factor ratio_v_e；
(4), it is calculated target bus voltage value ed_target；
(5), adjust pfc；
(6), change actual bus voltage value ed to level off to target bus voltage value ed_target.
Described step (2) instructs vq and DC voltage ed it may also is that reading d shaft voltage instruction vd, q shaft voltage,
Above three value is substituted intoCalculate virtual voltage saturation factor ratio_v_e.
Described step (3) it may also is that a, by virtual voltage saturation factor ratio_v_e and target voltage saturation factor
Ratio_target is divided by, and obtains a ratio p；B, 1 deduct ratio p through pi algorithm obtain one biasing coefficient c；C, this is
Number is multiplied by DC voltage value ed, obtains a bias voltage value e '；D, target bus voltage value ed_target=DC voltage value
Ed+ bias voltage value e '.
Further comprising the steps of between step a and step b: to increase a value limiter, limit the maximum and of ratio p
Little value.
A step is also included: increase a value limiter, with the maximum in order to limited target busbar voltage after step d
And minima.
After above method, the present invention compared with prior art, has the advantage that
The present invention is used for brshless DC motor and drives the busbar voltage control method of converter to pass through real-time relatively actual electricity
Pressure saturation factor and target voltage saturation factor, to determine the voltage amplitude of adjustment, pass through after opening pfc to change actual DC voltage again
Value is so that actual DC magnitude of voltage is same or about with target DC voltage value.Therefore, it can be seen that the reality of the present invention
Border DC voltage value is real-time change, and by changing actual voltage value so that virtual voltage saturation factor is higher, this is maintained for
The utilization rate of voltage is higher.Because the utilization rate of voltage is higher, therefore not only avoid the waste of voltage, and ensure that work(
The normal work of rate device and radiating are so that the reliability of device is ensured.
Further, further comprising the steps of between step a and step b: to increase a value limiter, limit ratio p's
Maximum and minima.The use of this value limiter, defines maximum and the minima of ratio p, thus decreasing misoperation,
Resource is utilized with raising system.
Further, also include a step after step d: increase a value limiter, with order to limited target bus electricity
The maximum of pressure and minima.The use of this value limiter, defines maximum and the minima of ratio p, thus decreasing by mistake
Action, utilizes resource to improve system.
Brief description
Fig. 1 is the flow chart that the present invention is used for that brshless DC motor drives the busbar voltage control method of converter.
Fig. 2 is the schematic block diagram of step 2.
Fig. 3 is the voltage pattern of bus voltage value ed.
Fig. 4 be using the present invention before and after schematic diagram.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of busbar voltage control method driving converter for brshless DC motor of the present invention,
Comprise the following steps,
(1), open pfc；
(2), target setting voltage saturation rate ratio_target and reading actual bus voltage value ed, in the present embodiment
Middle target voltage saturation factor is usually set to 90% about；Relation between busbar voltage and Motor drive phase voltage such as accompanying drawing 3 institute
Show.
(3), it is calculated virtual voltage saturation factor ratio_v_e；
(4), it is calculated target bus voltage value ed_target；
(5), adjust pfc；
(6), change actual bus voltage value ed to level off to target bus voltage value ed_target；Change actual female
Line voltage value ed is so that actual bus voltage value ed is same or like with target bus voltage value ed_target, such as two
The error of person is within+the 10% or -10% of target bus voltage value.
Described step (2) instructs vq and DC voltage ed it may also is that reading d shaft voltage instruction vd, q shaft voltage,
These three values all can pass through the sensor of hardware and driven algorithm obtains.
Above three value is substituted intoCalculate virtual voltage saturation factor ratio_v_e.
Described step (3) it may also is that a, by virtual voltage saturation factor ratio_v_e and target voltage saturation factor
Ratio_target is divided by, and obtains a ratio p；B, 1 deduct ratio p through pi algorithm obtain one biasing coefficient c；C, this is
Number is multiplied by DC voltage value ed, obtains a bias voltage value e '；D, target bus voltage value ed_target=DC voltage value
Ed+ bias voltage value e '.
Wherein, pi coefficient is the dc voltage follow speed setting according to pfc.
Further comprising the steps of between step a and step b: to increase a value limiter, limit the maximum and of ratio p
Little value.It is worth between the maximum of ratio p and minima, signal effectively and can carry out next step data processing.This ratio
The maximum of value p is ed_max/ed, and the maximum of this ratio p is ed_min/ed, and the wherein value of ed_max and e_min is also root
The factually default on border.
A step is also included: increase a voltage limitator, with the maximum in order to limited target busbar voltage after step d
Value and minima.It is worth between the maximum of target bus voltage and minima, signal effectively and can carry out next step
Data processing.The maximum of target bus voltage and minima are that the situation according to system sets, and different systems has difference
Voltage limit, the thick lines shown in figure are target bus voltage values ed_target, and hachure is virtual voltage saturation factor
ratio_v_e；
In the present embodiment, setting minimum bus voltage be 300v, maximum busbar voltage be 380v, target bus voltage with
With the modulator approach of voltage saturation rate, as shown in Figure 4.When not using the inventive method, target bus voltage is generally fixed value,
380v horizontal line as shown in Figure 4；After the present invention, then variable adjustment is carried out according to saturation factor.It is located at 90%-95% in Fig. 4
Between that curve be virtual voltage saturation factor, the target bus that curve positioned at less than 90% is adjusted by the present invention
Magnitude of voltage.
Below only highly preferred embodiment of the present invention is described, but is not to be construed as limiting the scope of the invention.This
Invention is not limited only to above example, and its concrete structure allows to change.In every case in the protection model of independent claims of the present invention
Enclose interior made various change all within the scope of the present invention.
Claims (5)
1. a kind of for brshless DC motor drive converter busbar voltage control method it is characterised in that: include following walking
Suddenly,
(1), open pfc；
(2), target setting voltage saturation rate ratio_target and reading actual bus voltage value ed；
(3), it is calculated virtual voltage saturation factor ratio_v_e；
(4), it is calculated target bus voltage value ed_target；
(5), adjust pfc；
(6), change actual bus voltage value ed to level off to target bus voltage value ed_target.
2. it is used for the busbar voltage control method that brshless DC motor drives converter according to claim 1, its feature exists
In: described step (2), will be above-mentioned it may also is that reading d shaft voltage instruction vd, q shaft voltage instruction vq and DC voltage ed
Three values substitute intoCalculate virtual voltage saturation factor ratio_v_e.
3. it is used for the busbar voltage control method that brshless DC motor drives converter according to claim 1, its feature exists
In: described step (3) it may also is that a, by virtual voltage saturation factor ratio_v_e and target voltage saturation factor ratio_
Target is divided by, and obtains a ratio p；B, 1 deduct ratio p through pi algorithm obtain one biasing coefficient c；C, this coefficient is multiplied by
DC voltage value ed, obtains a bias voltage value e '；Value ed_target=DC voltage value ed+ is inclined for d, target bus voltage
Put magnitude of voltage e '.
4. it is used for the busbar voltage control method that brshless DC motor drives converter according to claim 3, its feature exists
In: further comprising the steps of between step a and step b: to increase a value limiter, limit maximum and the minima of ratio p.
5. it is used for the busbar voltage control method that brshless DC motor drives converter according to claim 3, its feature exists
In: also include a step after step d: increase a value limiter, with the maximum and in order to limited target busbar voltage
Little value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610873276.XA CN106357102B (en) | 2016-09-30 | 2016-09-30 | Busbar voltage control method for brshless DC motor driving frequency converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610873276.XA CN106357102B (en) | 2016-09-30 | 2016-09-30 | Busbar voltage control method for brshless DC motor driving frequency converter |
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| CN106357102A true CN106357102A (en) | 2017-01-25 |
| CN106357102B CN106357102B (en) | 2018-12-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194338A (en) * | 2018-01-15 | 2018-06-22 | 杭州先途电子有限公司 | A kind of driven compressor voltage saturation control method and device |
| CN108400745A (en) * | 2018-03-26 | 2018-08-14 | 杭州先途电子有限公司 | A kind of motor control method and device |
| CN109818490A (en) * | 2019-03-25 | 2019-05-28 | 珠海格力电器股份有限公司 | Circuit of power factor correction and its control method and device, electrical equipment |
| CN110707919A (en) * | 2019-11-11 | 2020-01-17 | 宁波奥克斯电气股份有限公司 | PFC circuit control method and device and air conditioner |
| CN111706953A (en) * | 2020-06-03 | 2020-09-25 | 宁波奥克斯电气股份有限公司 | Variable frequency air conditioner controller bus voltage control method and device and air conditioner |
| WO2024118235A1 (en) * | 2022-12-01 | 2024-06-06 | Allegro Microsystems, Llc | Motor controller having low noise high frequency signal injection |
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| CN103580042A (en) * | 2012-07-25 | 2014-02-12 | 艾默生网络能源有限公司 | PFC circuit bus voltage automatic equalization method and device |
| US20150222199A1 (en) * | 2013-01-14 | 2015-08-06 | Yaskawa America, Inc. | Single-phase active front end rectifier system for use with three-phase variable frequency drives |
| CN105610368A (en) * | 2016-01-14 | 2016-05-25 | 广东美芝制冷设备有限公司 | Weak magnetic control method and device of compressor and compressor control system |
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| CN102299649A (en) * | 2010-06-24 | 2011-12-28 | 盛飞 | Power supply converter |
| CN102629833A (en) * | 2011-02-08 | 2012-08-08 | 快捷韩国半导体有限公司 | Power supply and apparatus and method for controlling link voltage control switch |
| CN103580042A (en) * | 2012-07-25 | 2014-02-12 | 艾默生网络能源有限公司 | PFC circuit bus voltage automatic equalization method and device |
| US20150222199A1 (en) * | 2013-01-14 | 2015-08-06 | Yaskawa America, Inc. | Single-phase active front end rectifier system for use with three-phase variable frequency drives |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194338A (en) * | 2018-01-15 | 2018-06-22 | 杭州先途电子有限公司 | A kind of driven compressor voltage saturation control method and device |
| CN108194338B (en) * | 2018-01-15 | 2022-03-25 | 杭州先途电子有限公司 | Compressor driving voltage saturation control method and device |
| CN108400745A (en) * | 2018-03-26 | 2018-08-14 | 杭州先途电子有限公司 | A kind of motor control method and device |
| CN109818490A (en) * | 2019-03-25 | 2019-05-28 | 珠海格力电器股份有限公司 | Circuit of power factor correction and its control method and device, electrical equipment |
| CN110707919A (en) * | 2019-11-11 | 2020-01-17 | 宁波奥克斯电气股份有限公司 | PFC circuit control method and device and air conditioner |
| CN111706953A (en) * | 2020-06-03 | 2020-09-25 | 宁波奥克斯电气股份有限公司 | Variable frequency air conditioner controller bus voltage control method and device and air conditioner |
| WO2024118235A1 (en) * | 2022-12-01 | 2024-06-06 | Allegro Microsystems, Llc | Motor controller having low noise high frequency signal injection |
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| Publication number | Publication date |
|---|---|
| CN106357102B (en) | 2018-12-04 |
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