KR101749530B1 - Motor driving apparatus and home appliance including the same - Google Patents
Motor driving apparatus and home appliance including the same Download PDFInfo
- Publication number
- KR101749530B1 KR101749530B1 KR1020160012940A KR20160012940A KR101749530B1 KR 101749530 B1 KR101749530 B1 KR 101749530B1 KR 1020160012940 A KR1020160012940 A KR 1020160012940A KR 20160012940 A KR20160012940 A KR 20160012940A KR 101749530 B1 KR101749530 B1 KR 101749530B1
- Authority
- KR
- South Korea
- Prior art keywords
- switching
- vector
- phase
- inverter
- turn
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/084—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters using a control circuit common to several phases of a multi-phase system
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
Abstract
The present invention relates to a motor driving apparatus and a home appliance having the motor driving apparatus. The motor driving apparatus according to an embodiment of the present invention includes a dc-stage capacitor for storing a dc power supply, a three-phase sagittal switching device and a bottom-arm switching device, and the dc- And a control unit for controlling the inverter. The control unit controls the switching elements in the inverter by variable control of pulse width based on the space vector, and controls the inverter in three phases And the turn-on time for at least one of the three-phase switching elements among the sag-lock switching elements is shifted. Thus, the current flowing into the capacitor disposed at the dc stage can be reduced.
Description
BACKGROUND OF THE
The motor driving apparatus is an apparatus for driving a motor having a rotor for rotating and a stator for winding a coil.
On the other hand, the motor drive apparatus can be classified into a sensor-driven motor drive apparatus using sensors and a sensorless motor drive apparatus without sensor.
2. Description of the Related Art In recent years, sensorless motor drive devices have been widely used due to a reduction in manufacturing cost and the like. Accordingly, a sensorless motor drive device has been studied for efficient motor drive.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a motor driving apparatus capable of reducing a current flowing into a capacitor disposed in a dc stage and a home appliance having the motor driving apparatus.
It is another object of the present invention to provide a motor driving apparatus capable of using a dc short capacitor having a small capacitance and a home appliance having the motor driving apparatus.
According to an aspect of the present invention, there is provided a motor driving apparatus including a dc-stage capacitor for storing a dc power source, a three-phase sagittal switching device and a bottom-arm switching device, And a control unit for controlling the inverter. The control unit controls the switching device in the inverter by a space-vector-based variable pulse width control. And controls the turn-on time of at least one three-phase switching device among the three-phase upper-arm switching devices in the inverter to be shifted.
According to another aspect of the present invention, there is provided a home appliance including a dc-stage capacitor for storing a dc power source, a three-phase sagittal switching device and a bottom-arm switching device, And a control unit for controlling the inverter. The control unit controls the switching device in the inverter by the space-vector-based pulse width variable control, And controls the turn-on time of at least one three-phase switching device among the three-phase upper-arm switching devices in the inverter to be shifted.
According to an embodiment of the present invention, a motor driving apparatus and a home appliance having the motor driving apparatus include a dc-stage capacitor for storing a dc power supply, a three-phase sagittal switching device and a bottom-arm switching device, An inverter for converting a DC power source from the capacitor to an AC power source and outputting the converted AC power to the motor and a control unit for controlling the inverter, The current flowing into the capacitor disposed at the dc stage can be reduced by controlling the device so that the turn-on time for at least one of the three-phase switching devices in the three-phase inverter in the inverter is shifted.
Thus, the heat generated in the capacitor disposed in the dc stage can be reduced, and the element stability of the capacitor is improved.
As a result, the capacitance of the capacitor can be reduced. Therefore, the manufacturing cost and the like can be reduced.
On the other hand, since the number of switching times can be reduced for zero vector reduction, the switching loss in the inverter can be reduced.
On the other hand, a simple implementation is possible by shifting the switching time for some of the three-phase switching vectors for zero vector reduction.
1 illustrates an example of an internal block diagram of a motor driving apparatus according to an embodiment of the present invention.
2 is an example of an internal circuit diagram of the motor driving apparatus of FIG.
3 is an internal block diagram of the inverter control unit of FIG.
4 is a diagram referred to explain the current flowing in the dc short capacitor.
5 is a diagram referred to explain the position of the voltage vector in the space vector area.
6A and 6B are diagrams illustrating a switching vector shift technique in a motor driving apparatus according to an embodiment of the present invention.
Figs. 7 to 10D are views referred to in the description of the operation of Figs. 6A to 6B.
11 is a flowchart illustrating an operation method of a motor driving apparatus according to an embodiment of the present invention.
13 is an internal block diagram of the laundry processing apparatus of Fig.
Fig. 14 is a diagram illustrating a configuration of an air conditioner, which is another example of a home appliance according to an embodiment of the present invention.
15 is a schematic view of the outdoor unit and the indoor unit of Fig.
16 is a perspective view illustrating a refrigerator that is another example of a home appliance according to an embodiment of the present invention.
Fig. 17 is a view schematically showing the configuration of the refrigerator of Fig. 16; Fig.
Hereinafter, the present invention will be described in detail with reference to the drawings.
The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.
The motor driving apparatus described in this specification can estimate the rotor position of the motor by a sensorless method in which a position sensing unit such as a hall sensor for sensing the rotor position of the motor is not provided Which is a motor-driven device. Hereinafter, a sensorless motor drive apparatus will be described.
Meanwhile, the
FIG. 1 illustrates an example of an internal block diagram of a motor driving apparatus according to an embodiment of the present invention, and FIG. 2 illustrates an example of an internal circuit diagram of the motor driving apparatus of FIG.
The
The
The
Thus, the heat generated in the capacitor disposed in the dc stage can be reduced, and the element stability of the capacitor is improved.
As a result, the capacitance of the capacitor can be reduced. Therefore, the manufacturing cost and the like can be reduced.
In particular, it becomes possible to use a small-capacity dc single capacitor C, which is called capacitorless.
Hereinafter, the operation of each of the constituent units in the
The reactor L is disposed between the commercial AC power source 405 (v s ) and the
The input current detection section A can detect the input current (i s ) input from the commercial
The
Meanwhile, the
For example, in the case of a single-phase AC power source, four diodes may be used in the form of a bridge, and in the case of a three-phase AC power source, six diodes may be used in the form of a bridge.
On the other hand, the
When the
The dc single capacitor C smoothes the input power supply and stores it. In the figure, one element is exemplified by the dc-terminal capacitor C, but a plurality of elements are provided, thereby ensuring the element stability.
For example, when the DC power from the solar cell is supplied to the dc capacitor C, the dc capacitor C is connected to the output terminal of the
On the other hand, both ends of the dc short-circuit capacitor C may be referred to as a dc stage or a dc stage since the dc power source is stored.
the dc short-circuit voltage detector B can detect the dc short-circuit voltage Vdc at both ends of the dc short-circuit capacitor C. For this purpose, the dc voltage detection unit B may include a resistance element, an amplifier, and the like. The detected dc voltage source Vdc can be input to the
The
The
The switching elements in the
The
The
The output current detection unit E can detect the output current idc flowing between the three-
The output current detection unit E can be disposed in the
The output current detection section E may include three resistance elements as shown in the drawing. It is possible to detect phase currents (ia, ib, ic) that are the output currents io flowing through the
In the present specification, the output currents ia, ib, ic, or io are used in combination.
On the other hand, unlike the drawing, the output current detecting section E may include two resistance elements. The phase currents of the remaining phases can be calculated using three-phase equilibrium.
The output current detection unit E is disposed between the dc short-circuit capacitor C and the
According to the one-shunt method, the output current detection section E uses the single shunt resistor element Rs to detect the output current (current) flowing through the
The detected output current idc can be applied to the
On the other hand, the three-
The
3 is an internal block diagram of the inverter control unit of FIG.
3, the
The axis converting unit 310 can convert the output currents ia, ib, ic detected by the output current detecting unit E into the two-phase currents iα, iβ in the stationary coordinate system.
On the other hand, the axis converting unit 310 can convert the two-phase current i ?, i? Of the still coordinate system into the two-phase current id, iq of the rotating coordinate system.
Based on the output currents (ia, ib, ic) detected by the output current detecting unit E, the speed calculating unit 320 calculates the position value
), Differentiates the estimated position, ) Can be calculated.On the other hand, the current command generation unit 330 generates the current command
(I * q ) on the basis of the speed command value? * R and the speed command value? * R. For example, the current command generation section 330 generates the current command The PI controller 335 performs the PI control based on the difference between the speed command value? * R and the speed command value? * R , and generates the current command value i * q . In the figure, the q-axis current command value (i * q ) is exemplified by the current command value, but it is also possible to generate the d-axis current command value (i * d ) unlike the figure. On the other hand, the value of the d-axis current command value i * d may be set to zero.On the other hand, the current command generation section 330 may further include a limiter (not shown) for limiting the current command value (i * q ) so that the current command value (i * q ) does not exceed the allowable range.
Next, the voltage command generating unit 340 generates the voltage command generating unit 340 with the d-axis and q-axis currents (i d , i q ) axially transformed into the two-phase rotational coordinate system in the axial converting unit and the current command value based on i * d, i * q) , and generates a d-axis, q-axis voltage command value (v * d, v * q ). For example, the voltage command generation unit 340 performs PI control in the PI controller 344 based on the difference between the q-axis current (i q ) and the q-axis current command value (i * q ) It is possible to generate the axial voltage command value v * q . The voltage command generation unit 340 performs PI control in the PI controller 348 based on the difference between the d-axis current i d and the d-axis current command value i * d , It is possible to generate the command value v * d . The voltage command generator 340 may further include a limiter (not shown) for limiting the level of the d-axis and q-axis voltage command values v * d and v * q so as not to exceed the permissible range .
On the other hand, the generated d-axis and q-axis voltage command values (v * d and v * q ) are input to the axial conversion unit 350.
The axis transforming unit 350 transforms the position calculated by the velocity calculating unit 320
) And the d-axis and q-axis voltage command values (v * d , v * q ).First, the axis converting unit 350 performs conversion from a two-phase rotating coordinate system to a two-phase stationary coordinate system. At this time, the position calculated by the speed calculator 320 (
) Can be used.Then, the axial conversion unit 350 performs conversion from the two-phase stationary coordinate system to the three-phase stationary coordinate system. Through this conversion, the axial conversion unit 1050 outputs the three-phase output voltage instruction values v * a, v * b, v * c.
The switching control signal output section 360 generates the switching control signal Sic for inverter according to the pulse width modulation (PWM) method based on the three-phase output voltage instruction values v * a, v * b and v * And outputs it.
The output inverter switching control signal Sic may be converted into a gate driving signal in a gate driving unit (not shown) and input to the gate of each switching element in the
On the other hand, the switching control signal output unit 360 controls the switching elements in the
Particularly, the switching control signal output unit 360 outputs a switching control signal to the switching elements of the three-phase upper arm switching elements Sa, Sb, and Sc in the
On the other hand, when the voltage vector is located in one of the
On the other hand, when the voltage vector is located in one of the
On the other hand, when the turn-on time for the one-phase switching element among the three-phase upper arm switching elements Sa, Sb and Sc in the
On the other hand, when the turn-on time for the one-phase switching element among the three-phase upper arm switching elements Sa, Sb and Sc in the
On the other hand, when the turn-on time for the two-phase switching elements among the three-phase upper arm switching elements Sa, Sb and Sc in the
On the other hand, when the turn-on time for the two-phase switching elements among the three-phase upper arm switching elements Sa, Sb and Sc in the
On the other hand, when the turn-on time of at least one three-phase switching element among the three-phase upper arm switching elements Sa, Sb and Sc in the
On the other hand, the switching control signal output unit 360 outputs the switching time of the turn-on timing of at least one of the three-phase upper arm switching elements Sa, Sb, and Sc in the
On the other hand, the switching control signal output unit 360 controls the switching vector Ta, Tb, and Tc among the three-phase switching vectors Ta, Tb, and Tc to be turned on throughout the switching period, The small switching vector can be controlled to be turned off during the switching period.
4 is a diagram referred to explain the current flowing in the dc short capacitor.
Referring to the drawings, a
In the drawing, the current flowing through the output terminal of the
On the other hand, when the current Iconv flowing through the output terminal of the
Accordingly, when the inverter current Iivn having the same magnitude as the current Iconv flowing through the output terminal of the
Meanwhile, the switching control signal applied to the
That is, the switching control signal may be generated based on the voltage vector corresponding to the voltage command value generated by the
On the other hand, the voltage vector may be composed of a three-phase switching vector so as to drive the three-phase inverter upper-arm switching element and the lower arm switching element.
On the other hand, the voltage vector can be divided into an effective vector and a zero vector.
During the switching period of the
The zero vector section may include a period in which all of the three-phase sagittal switching elements in the inverter are turned on or a period in which all three-phase sagittal switching elements in the inverter are turned off.
On the other hand, during the valid vector period, the actual current is applied to the
Therefore, the present invention proposes a technique of reducing a zero vector with reference to FIGS. 6A to 6B and the like.
More specifically, the
FIGS. 6A and 6B are diagrams for explaining a switching vector shift technique in a motor driving apparatus according to an embodiment of the present invention, and FIGS. 7 to 10D are views referencing the operation description of FIGS. 6A to 6B.
6A and 6A illustrate examples of three-phase switching vectors Tmax, Tmid, and Tmin.
6A and
These
Next, Figs. 6A and 6B illustrate another example of the three-phase switching vector Tmax, Tmid, and Tmin.
6A and 6A, the turn-on time corresponding to the switching vector Tmid of the second size among the three-phase switching vectors Tmax, Tmid, Tmin, As shown in FIG.
Specifically, when the voltage vector is located in one of the
On the other hand, when the voltage vector is located in one of the
Accordingly, a zero vector section in which all the switching elements of the three-phase upper arm switching elements Sa, Sb, Sc in the
On the other hand, when the turn-on time for at least one three-phase switching element among the three-phase upper arm switching elements Sa, Sb and Sc in the
On the other hand, Figs. 7A and 7B illustrate phase current waveforms before and after the switching vector shift in
Fig. 7A illustrates the phase current waveform (a-phase current waveform, c-phase current waveform) before switching vector shift in
Fig. 7B illustrates the phase current waveform (a-phase current waveform, c-phase current waveform) after switching vector shift in
Comparing FIG. 7B with FIG. 7A, it can be seen that after the switching vector shift, the phase current increases (a phase current increase, c phase current increase) as shown in FIG. 7B.
Particularly, the turn-on time corresponding to the second-order switching vector Tb of the three-phase switching vectors Ta, Tb and Tc is shifted to the right, thereby reducing the zero vector interval, So that the phase current flowing in the
8 to 10 illustrate various examples of shifting the switching vector.
First, FIG. 8 illustrates shifting only the switching vector of one of the three-phase switching vectors.
The
Phase switching element (Tmax, Tmid, Sc) when shifting the turn-on time for the one-phase switching element among the three-phase upper arm switching elements Sa, Sb and Sc in the
In particular, the
When T2 is larger than T1 and the voltage vector is located in any one of
When T2 is larger than T1 and the voltage vector is located in one of the
When T1 is larger than T2 and the voltage vector is located in any one of
When T1 is larger than T2 and the voltage vector is located in any one of
Next, FIG. 9 illustrates shifting only the switching vectors of the two phases among the three-phase switching vectors.
The
More specifically, when the turn-on time for the two-phase switching device among the three-phase upper-arm switching devices Sa, Sb, and Sc in the
In particular, the
On the other hand, Tshift1 among the shift values (Tshift1, Tshift2) of the turn-on time in Fig. 9 can correspond to the Tshift1 value described in Fig.
When T2 is larger than T1 and the voltage vector is located in one of the
When T2 is larger than T1 and the voltage vector is located in any one of the
When T1 is larger than T2 and the voltage vector is located in one of the
When T1 is larger than T2 and the voltage vector is located in any one of the
Next, FIG. 10 illustrates shifting all three-phase switching vectors among the three-phase switching vectors.
The
In particular, when the Tshift2 in Fig. 9 is smaller than Ts, the
In particular, when the Tshift2 is smaller than Ts, the
On the other hand, Tshift1 among the shift values Tshift1, Tshift2, and Tshift3 of the turn-on time in FIG. 10 corresponds to the Tshift1 value described in FIG. 8, and Tshift2 can correspond to the Tshift2 value described in FIG.
When T2 is larger than T1 and the voltage vector is located in any one of the
When T2 is larger than T1 and the voltage vector is located in any one of the
When T1 is larger than T2 and the voltage vector is located in any one of the
When T1 is larger than T2 and the voltage vector is located in any one of the
11 is a flowchart illustrating an operation method of a motor driving apparatus according to an embodiment of the present invention.
The
Next, the
The
Next, the
As described above, when the voltage vector is located in one of the
When the turn-on time for the one-phase switching device among the three-phase squeeze switching devices Sa, Sb, Sc in the
When the turn-on time for the two-phase switching elements among the three-phase upper arm switching elements Sa, Sb and Sc in the
According to this method of operating the motor driving apparatus, the current flowing into the capacitor disposed at the dc stage can be reduced.
Thus, the heat generated in the capacitor disposed in the dc stage can be reduced, and the element stability of the capacitor is improved.
As a result, the capacitance of the capacitor can be reduced. Therefore, the manufacturing cost and the like can be reduced.
On the other hand, since the number of switching times can be reduced for zero vector reduction, the switching loss in the inverter can be reduced.
On the other hand, the
12 is a perspective view illustrating a laundry processing apparatus according to an embodiment of the present invention.
Referring to the drawings, a
The
A plurality of through
The
The
The
The
On the other hand, the
The
13 is an internal block diagram of the laundry processing apparatus of Fig.
Referring to the drawings, in the
The
Also, the
Meanwhile, the
2) for detecting an output current flowing through the
For example, the inverter control unit (430 in Fig. 2) in the
Specifically, the
On the other hand, the driving
On the other hand, the
In particular, the
Meanwhile, the
In particular, the
Fig. 14 is a diagram illustrating a configuration of an air conditioner, which is another example of a home appliance according to an embodiment of the present invention.
The
The
Meanwhile, the
The
The
At this time, the
The
At this time, the
The remote controller (not shown) is connected to the
15 is a schematic view of the outdoor unit and the indoor unit of Fig.
Referring to the drawings, the
The
The
At least one
Further, the
The
Alternatively, the indoor fan 109ab or the outdoor fan 105ab may be driven by a motor driving apparatus, such as the one shown in Fig. 1, which drives the indoor fan motor 109bb and the outdoor fan motor 150bb, respectively.
16 is a perspective view illustrating a refrigerator that is another example of a home appliance according to an embodiment of the present invention.
The
A
Meanwhile, a
The
In the drawing, the
On the other hand, an ice-
The
The
The
The
Meanwhile, the refrigerator according to the embodiment of the present invention is not limited to the double door type shown in the drawing, but may be a one door type, a sliding door type, a curtain door type (Curtain Door Type).
Fig. 17 is a view schematically showing the configuration of the refrigerator of Fig. 16; Fig.
The
In the figure, one evaporator is used, but it is also possible to use the evaporator in each of the refrigerating chamber and the freezing chamber.
That is, the
The
The
The refrigerator can further include a
In this case, a damper (not shown) may be installed between the refrigerator compartment and the freezer compartment, and a fan (not shown) may be installed between the refrigerator compartment and the freezer compartment, Can be forcedly blown to be supplied to the freezer compartment and the refrigerating compartment.
The
Alternatively, a refrigerator compartment fan (not shown) or a
The motor driving apparatus and the home appliance having the motor driving apparatus according to the embodiments of the present invention can be applied to the configuration and method of the embodiments described above in a limited manner, All or some of the embodiments may be selectively combined.
Meanwhile, the motor driving method or the method of operating the home appliance of the present invention can be implemented as a processor-readable code on a recording medium readable by a processor included in a motor driving apparatus or a home appliance. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.
Claims (11)
An inverter for converting a direct current power from the dc short capacitor to an alternating current power by a switching operation and outputting the converted alternating current power to the motor;
And a control unit for controlling the inverter,
Wherein,
The control unit controls the switching elements in the inverter by the space vector-based pulse width variable control and controls the shift direction of the turn-on time for at least one of the three-phase switching elements in the three- And controls the turn-on time of at least one three-phase switching element among the three-phase upper-arm switching elements in the inverter to be shifted.
Wherein,
When the voltage vector is located in one of the sector 1, the sector 3 and the sector 5 of the space vector area, the turn-on time corresponding to the second-largest switching vector among the three-phase switching vectors is controlled to move to the right ,
When the voltage vector is located in one of the sector 2, the sector 4, and the sector 6 of the space vector area, the turn-on time corresponding to the second-largest switching vector among the three- The motor driving apparatus comprising:
Wherein,
Wherein when the turn-on time for the one-phase switching element among the three-phase upper-arm switching elements in the inverter is shifted, the turn-on time corresponding to the second-order switching vector among the three-phase switching vectors is shifted.
Wherein,
When the turn-on time for the one-phase switching device among the three-phase upper-arm switching devices in the inverter is shifted, the turn-on time corresponding to the second-
Wherein the control unit shifts the voltage vector by a magnitude of a valid vector having a smaller one of a first valid vector and a second valid vector of the voltage vector.
Wherein,
When shifting the turn-on time for the two-phase switching element among the three-phase upper-arm switching elements in the inverter, shifting the turn-on time corresponding to the second largest switching vector and the switching vector of the three- Characterized in that the motor drive device.
Wherein,
When switching the turn-on time for the two-phase switching device among the three-phase upper-arm switching devices in the inverter, the switching vector having the largest size among the three-phase switching vectors and the turn-
And the shift of the turn-on time corresponding to the second-order switching vector is controlled to be smaller than the switching half-cycle.
Wherein,
Wherein when the turn-on time of at least one of the three-phase upper-arm switching elements in the inverter is shifted, the phase current flowing in the motor is controlled to increase.
Wherein,
And determines a shift time of the turn-on timing of at least one switching element among the three-phase upper-arm switching elements in the inverter according to the position of the voltage vector.
Wherein,
Wherein the control unit controls the switching vector having the largest one of the three-phase switching vectors to be turned on during the switching period or controls the switching vector of the three-phase switching vector to be turned off during the switching period.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160012940A KR101749530B1 (en) | 2016-02-02 | 2016-02-02 | Motor driving apparatus and home appliance including the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020160012940A KR101749530B1 (en) | 2016-02-02 | 2016-02-02 | Motor driving apparatus and home appliance including the same |
Publications (1)
Publication Number | Publication Date |
---|---|
KR101749530B1 true KR101749530B1 (en) | 2017-06-21 |
Family
ID=59281787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020160012940A KR101749530B1 (en) | 2016-02-02 | 2016-02-02 | Motor driving apparatus and home appliance including the same |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101749530B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190066710A (en) * | 2017-12-06 | 2019-06-14 | 엘지전자 주식회사 | Motor driving apparatus and home appliance including the same |
KR20190124127A (en) * | 2018-04-25 | 2019-11-04 | 이상선 | Butterfly valve and method of manufacturing the same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030173946A1 (en) * | 2002-03-15 | 2003-09-18 | Guang Liu | Procedure for measuring the current in each phase of a three-phase device via single current sensor |
JP2015524248A (en) * | 2012-06-22 | 2015-08-20 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングRobert Bosch Gmbh | Method and apparatus for controlling an inverter |
-
2016
- 2016-02-02 KR KR1020160012940A patent/KR101749530B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030173946A1 (en) * | 2002-03-15 | 2003-09-18 | Guang Liu | Procedure for measuring the current in each phase of a three-phase device via single current sensor |
JP2015524248A (en) * | 2012-06-22 | 2015-08-20 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツングRobert Bosch Gmbh | Method and apparatus for controlling an inverter |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190066710A (en) * | 2017-12-06 | 2019-06-14 | 엘지전자 주식회사 | Motor driving apparatus and home appliance including the same |
KR102014147B1 (en) | 2017-12-06 | 2019-08-26 | 엘지전자 주식회사 | Motor driving apparatus and home appliance including the same |
KR20190124127A (en) * | 2018-04-25 | 2019-11-04 | 이상선 | Butterfly valve and method of manufacturing the same |
KR102216262B1 (en) | 2018-04-25 | 2021-02-17 | 이상선 | Butterfly valve and method of manufacturing the same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101858696B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101691793B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101709496B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101663520B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101716141B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101754687B1 (en) | Motor driving apparatus and home appliance including the same | |
KR20170025832A (en) | Motor driving apparatus and home appliance including the same | |
US20170047876A1 (en) | Motor driving apparatus and home appliance including the same | |
KR101738085B1 (en) | Motor driving apparatus and home applIce including the same | |
KR101822897B1 (en) | Motor driving apparatus and home appliance including the same | |
KR20170087271A (en) | Motor driving apparatus and home appliance including the same | |
KR101687556B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101756411B1 (en) | Motor driving apparatus and home applIce including the same | |
KR101749530B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101797201B1 (en) | Motor driving apparatus, home appliance and power providing system including the same | |
KR20180135323A (en) | Power converting apparatus and home appliance including the same | |
KR20180098042A (en) | Motor driving apparatus and home appliance including the same | |
KR20180093341A (en) | Motor driving apparatus and home appliance including the same | |
KR102035139B1 (en) | Motor driving apparatus and home appliance including the same | |
KR102014147B1 (en) | Motor driving apparatus and home appliance including the same | |
KR101750878B1 (en) | Motor driving apparatus and home appliance including the same | |
KR20180098043A (en) | Motor driving apparatus and home appliance including the same | |
KR101936641B1 (en) | Power converting apparatus and home appliance including the same | |
KR101752797B1 (en) | Motor driving apparatus and home appliance including the same | |
KR20200073713A (en) | Motor driving apparatus and home appliance including the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GRNT | Written decision to grant |