WO2011078425A1 - 부하의 세그먼테이션을 고려한 3-레벨 인버터 및 그 제어방법 - Google Patents
부하의 세그먼테이션을 고려한 3-레벨 인버터 및 그 제어방법 Download PDFInfo
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- WO2011078425A1 WO2011078425A1 PCT/KR2009/007696 KR2009007696W WO2011078425A1 WO 2011078425 A1 WO2011078425 A1 WO 2011078425A1 KR 2009007696 W KR2009007696 W KR 2009007696W WO 2011078425 A1 WO2011078425 A1 WO 2011078425A1
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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
- 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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
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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
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/50—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads
- H02J2310/56—The network for supplying or distributing electric power characterised by its spatial reach or by the load for selectively controlling the operation of the loads characterised by the condition upon which the selective controlling is based
- H02J2310/58—The condition being electrical
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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
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
Definitions
- Embodiments of the present invention relate to a three-level inverter and a control method thereof, and more particularly, it is necessary to minimize the number of semiconductor devices in a case where it is necessary to supply a DC / AC converted voltage to a plurality of loads.
- the present invention relates to a three-level inverter and a control method thereof, which can reduce the load current while reducing the voltage.
- Inverter is a device that converts DC power into AC power, and in the past, thyratron and mercury rectifier are mainly used. However, most inverters except large-capacity high-voltage circuits such as DC power transmission are mainly used for thyristor ( thyristor).
- inverters are classified into single phase inverters and three phase inverters.
- the single phase inverter can supply alternating current to one single phase load.
- electric devices such as an online electric vehicle are provided with a plurality of loads to supply alternating current, and installing a single-phase inverter corresponding to each of these loads is a major cause of increasing the design cost of the electric device.
- a switching switch such as a bidirectional semiconductor switch is provided corresponding to each load, and the on / off control of the installed switching switch is performed.
- the method of selectively supplying current to the load is mainly used.
- the transfer switch is formed so that the two switches can be switched in the opposite direction to each other, as shown in FIG. 1, when the transfer switch is installed corresponding to four loads, a semiconductor installed in the three-level inverter
- the total number of devices is twelve. Such an increase in semiconductor elements not only reduces the load current but also increases the cost of the three-level inverter.
- the present invention has been made to solve the above-described problem, and when power is sequentially supplied to a plurality of segments through an inverter, even if there is no switching switch for selecting a segment, the segment is selected only by turn-on / off control of the semiconductor switch. It is an object of the present invention to provide a three-level inverter and a control method thereof by minimizing the number of semiconductor switch elements, thereby reducing facility costs and increasing the efficiency by reducing the number of elements subjected to a load current.
- a three-level inverter for achieving the above object, a plurality of capacitors for voltage-charging the DC (Direct Current) input voltage;
- An upper switch having one end connected to a positive end of the plurality of capacitors;
- a lower switch having one end connected to a negative end of the plurality of capacitors;
- a plurality of legs each having a first switch connected to the other end of the upper switch and a second switch connected to the other end of the lower switch, the first switch and the second switch having a structure connected to each other;
- a plurality of diodes connected to each other to have a forward direction from the other end of the lower switch to the other end of the upper switch, the plurality of diodes having a contact therebetween connected to a contact between the plurality of capacitors;
- a plurality of loads connected by using the contact between the first switch and the second switch of each leg and the contact between the plurality of diodes as connection terminals.
- the first switch, the second switch, the upper switch, and the lower switch each have a structure in which transistors and diodes are connected in parallel.
- the aforementioned three-level inverter may further include an auxiliary capacitor whose both ends are respectively connected to the other end of the upper switch and the other end of the lower switch.
- the above-described three-level inverter preferably further comprises a control unit for controlling the on / off for each of the first switch, the second switch, the top switch and the bottom switch.
- a control part maintains a 2nd switch in a turn-off state, when maintaining a 1st switch in a turn-on state.
- control unit when the control unit maintains the second switch in the turn-on state, the control unit preferably maintains the first switch in the turn-off state.
- the controller may maintain the lower switch in the turn-off state when the upper switch is turned on, and maintain the upper switch in the turn-off state when the lower switch is turned on.
- the controller may control the first switch to turn on at a time behind a predetermined time when the upper switch is turned on, and to control the second switch to turn on at a time behind a predetermined time when the lower switch is turned on.
- the plurality of capacitors may be implemented with the same capacitance.
- a control method of a three-level inverter includes a plurality of capacitors for voltage-charging a DC input voltage, an upper switch having one end connected to a positive end of the plurality of capacitors, and a plurality of capacitors.
- a lower switch having one end connected to a negative end of the lower switch, each having a first switch connected to the other end of the upper switch and a second switch connected to the other end of the lower switch, wherein the first switch and the second switch are connected to each other.
- a plurality of legs are formed, a plurality of ends are connected to each other so as to have a forward direction from the other end of the upper switch, the auxiliary capacitor connected to the other end of the upper switch and the other end of the lower switch, the other end of the upper switch, A plurality of diodes connected to the contacts between the capacitors, and between the first and second switches of each leg A plurality of loads connected by using a contact between the contact point and the plurality of diodes as a connection terminal, each leg having a first switch and a second switch connected in series, respectively;
- a control method of a three-level inverter connected to the other end and the second switch is connected to the other end of the lower switch, comprising the steps of: turning on the upper switch or the lower switch; Selecting at least one first switch from among the plurality of legs when the top switch is turned on; And turning on the selected first switch at a time behind the predetermined time.
- control method of a three-level inverter comprises the steps of: turning off the turned on top switch; And turning on the lower switch.
- the control method of the three-level inverter may further include maintaining the lower switch in a turn-off state while the upper switch is in a turn-on state; And maintaining the second switch in the turn off state while maintaining the first switch in the turn on state.
- the control method of the three-level inverter may further include turning off the turned-on first switch; And turning on a second switch paired with the selected first switch.
- the control method of the three-level inverter may further include turning off the lower switch; And turning on the top switch.
- the segment when power is sequentially supplied to a plurality of segments through an inverter, even if there is no switching switch for selecting a segment, the segment may be selected and supplied by only turn-on / off control of the semiconductor switch.
- the number of semiconductor switch elements can be minimized to reduce facility costs and increase the efficiency by reducing the number of elements subjected to a load current.
- FIG. 1 shows an example of a three-level inverter for a load consisting of multiple segments.
- FIG. 2 is a diagram illustrating an example of a three-level interlock according to an embodiment of the present invention.
- FIG. 3 is a diagram illustrating an example of control of a switch constituting each leg.
- FIG. 4 is a diagram illustrating an example of an output voltage applied to each load.
- FIG. 5 is a flowchart illustrating a control method of a three-level inverter according to an embodiment of the present invention.
- FIG. 2 schematically illustrates a three-level inverter according to an embodiment of the present invention.
- a three-level inverter according to an embodiment of the present invention, a plurality of capacitors (Cd1, Cd2), a plurality of capacitors (Cd1, Cd2) for performing a partial voltage charge of the DC (Direct Current) input voltage (
- the three-level inverter may further include an auxiliary capacitor Cf having both ends connected to the other end of the upper switch So2 and the other end of the lower switch So1, respectively.
- the upper switch So2, the lower switch So1, the first switches Su1, Su2, Su3, Su4, and the second switches Sd1, Sd2, Sd3, and Sd4 each have a transistor and a diode connected in parallel. It is desirable to form a structure.
- the upper switch So2, the lower switch So1, the first switch Su1, Su2, Su3, Su4, and the second switch Sd1, Sd2, Sd3, Sd4 each have a transistor, a diode, and a capacitor in parallel. It may be implemented in a structure connected to.
- the plurality of capacitors Cd1 and Cd2 preferably have the same capacitance.
- leg 1 the first switch Su1 and the second switch Sd1 connected in a one-to-one manner
- leg 2 the first switch Su2 and the second switch Sd2
- leg 3 the first switch Su3 and the second switch Sd3
- leg 4 the first switch Su4 and the second switch Sd4
- the contact between the first switch Su1 of the leg 1 and the second switch Sd1 is called A1
- the contact between the first switch Su2 of the leg 2 and the second switch Sd2 is called A2
- the contact between the first switch Su3 and the second switch Sd3 of the leg 3 is called A3
- the contact between the first switch Su4 and the second switch Sd4 of the leg 4 is called A4.
- the contact between the plurality of diodes connected in series is referred to as B.
- first switch Su1 and the second switch Sd1 of the leg 1 and the load L1 connected between the contact A1 and the contact B are referred to as segment 1.
- first switch Su2 and the second switch Sd of the leg 2 and the load L2 connected between the contact A2 and the contact B are referred to as segment 2.
- first switch Su3 and the second switch Sd3 of the leg 3 and the load L3 connected between the contact A3 and the contact B are referred to as segment 3.
- first switch Su4 and the second switch Sd4 of the leg 4 and the load L4 connected between the contact A4 and the contact B are referred to as segment 4.
- four legs are provided in the three-level inverter, the number of legs is not limited thereto.
- the three-level inverter is connected to the upper switch So2, the lower switch So1, each of the first switches Su1, Su2, Su3, Su4, and each of the second switches Sd1, Sd2, Sd3, and Sd4. It is preferable to further include a control unit 210 for the on / off control.
- the controller 210 when the controller 210 maintains at least one of the first switches Su1, Su2, Su3, and Su4 of each leg in a turned-on state, the controller 210 is connected to the turned-on first switch and is in the same leg. It is desirable to keep the second switch in the off state. For example, as shown in FIG. 3, when the first switch Su1 is turned on, the second switch Sd1 is connected to the turned on first switch Su1 and is in the same leg 1. It is desirable to keep it turned off.
- the controller 210 when the controller 210 maintains at least one of the second switches Sd1, Sd2, Sd3, and Sd4 of each leg in a turned-on state, the controller 210 is connected to the turned-on second switch and is in the same leg. It is desirable to keep the first switch in the off state. For example, as shown in FIG. 3, when the second switch Sd1 is turned on, the first switch Su1 connected to the turned on second switch and in the same leg 1 is turned off. Is preferably maintained.
- controller 210 maintains the lower switch So1 in the turn-off state when the upper switch So2 is turned on, and the upper switch So2 when the lower switch So1 is turned on. ) Is preferably turned off.
- the controller 210 may control at least one of the first switches Su1, Su2, Su3, and Su4 to be turned on at a time later than a predetermined time.
- FIG. 4 is a diagram illustrating a voltage waveform output from an arbitrary segment by switching control by a controller.
- the output voltage applied to the load L1 when the upper switch So2, the lower switch So1, the first switch Su1, and the second switch Sd1 are turned on / off for the segment 1 is shown. Indicated.
- the controller 210 of the plurality of loads L1, L2, L3, and L4 includes a first switch connected to the load L1 at the contact A1.
- Su1 may be controlled to turn on at a time behind the upper switch So2.
- the lower switch So1 maintains turn-off in response to the turn-on of the upper switch So2
- the second switch Sd1 of leg 1 also maintains turn-off in response to the turn-on of the first switch Su1.
- the first switch Su1 is turned on at a time later than the upper switch So2, but in some cases, the control unit 210 controls the first switch Su1 connected to the load L1 at the contact A1. When turning on, it may be controlled to turn on at a time before the upper switch So2.
- the turn-on time length of each of the first switches Su1, Su2, Su3, and Su4 and the turn-on time length of each of the second switches Sd1, Sd2, Sd3, Sd4, and Sd5 may be the same.
- the turn-on time length of the upper switch So2 and the turn-on time length of the lower switch So1 may be the same.
- the turn-on time length of the upper switch So2, the turn-on time length of the lower switch So1, the turn-on time length of each of the first switches Su1, Su2, Su3, and Su4, and the respective second switches Sd1 and Sd2. , Sd3, Sd4, and Sd5) may all have the same turn-on time length.
- the waveform of the voltage output to the load L1 of the segment 1 is shown. Same as one.
- FIG. 5 is a flowchart illustrating a control method of a three-level inverter according to an embodiment of the present invention. 2, 4 and 5 will be described in detail a three-level control method according to an embodiment of the present invention.
- each of the capacitors Cd1 and Cd2 may have the same capacitance.
- the DC input voltage is 2E
- the voltage charged in each of the capacitors Cd1 and Cd2 is E.
- the controller 210 first turns on the upper switch So2 or the lower switch So1 (S501). In FIG. 4, the upper switch So2 is first turned on. At this time, the controller 210 controls the lower switch So1 to maintain the turn-off state while the upper switch So2 is turned on (S503). In addition, it is assumed that all the switches Su1, Su2, Su3, Su4, Sd1, Sd2, Sd3, and Sd4 constituting the segment are turned off. Therefore, no current flows into the loads L1, L2, L3, and L4.
- control unit 210 selects a load for supplying current among the plurality of loads L1, L2, L3, L4.
- L1, L2, L3, L4 it is assumed that the first load L1 is selected.
- the controller 210 selects the first switch Su1 of leg 1 corresponding to the selected load L1 (S505), and selects the selected first switch Su1. It turns on at a time behind the upper switch So2 (S507). At this time, the second switch Sd2 paired with the first switch Su1 of the turned leg 1 is maintained in a turn-off state (S509).
- the turn-on of the first switch Su1 of the leg 1 causes the current generated by the capacitor Cd1 of the plurality of capacitors Cd1 and Cd2 to become the upper switch So2, the first switch Su1 of the leg 1, and the load L1. ), And a voltage caused by the capacitor Cd1 is applied to both ends of the load L1.
- the waveform of the voltage applied to the load L1 is as shown in FIG.
- the three-level inverter includes the auxiliary capacitor Cf
- the voltage of the capacitor Cd is charged to the auxiliary capacitor Cf while the voltage of the capacitor Cd1 is applied to the load L1.
- the stray capacitance existing at both ends of the first switch Su1 is charged by the current flowing in the load L1 and is present at both ends of the second switch Sud1.
- the floating capacitance is discharged.
- the load current flows to the antiparallel diodes of the lower switch So1 and the second switch Sd1, and the -E voltage is applied to the load L1.
- the turn-on signal is applied to the second switch Sd1 of the leg 1 (S517).
- the load current changes direction according to the load condition and flows through the lower switch So1 and the second switch Sd1.
- the case where the lower switch So1 is turned off (S519) is also the same as the case of the upper switch So2 described above.
- the controller 210 selects a load for applying a current and controls the on / off switch of the corresponding segment, thereby converting and applying a DC applied voltage to an AC voltage to the load. At this time, it is sufficient to select the load only to control the on / off switch of the segment, it is not necessary to install a separate transfer switch.
- the number of semiconductor elements is increased to eight to supply current to four loads, and the total number of semiconductor elements is ten, the number of semiconductor elements is reduced as compared with the prior art.
- the current is applied to the load only through two semiconductor elements, the loss caused by the semiconductor element can be reduced.
- the three-level inverter includes the auxiliary capacitor Cf
- the above-described effect can be obtained even when the auxiliary capacitor Cf is not present.
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Abstract
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Claims (16)
- DC(Direct Current) 입력전압을 분압 충전하는 복수의 커패시터;상기 복수의 커패시터의 포지티브(positive) 단에 일단이 연결된 상단 스위치;상기 복수의 커패시터의 네거티브(negative) 단에 일단이 연결된 하단 스위치;각각이 상기 상단 스위치의 타단에 연결된 제1 스위치 및 상기 하단 스위치의 타단에 연결된 제2 스위치를 구비하며, 상기 제1 스위치 및 상기 제2 스위치가 서로 연결된 구조로 형성되는 복수의 레그;상기 하단 스위치의 타단에서 상기 상단 스위치의 타단으로 순방향을 갖도록 복수가 연결되어 형성되며, 그 사이의 접점이 상기 복수의 커패시터 사이의 접점과 연결되는 복수의 다이오드; 및각각의 상기 레그의 상기 제1 스위치 및 상기 제2 스위치 사이의 접점과 상기 복수의 다이오드 사이의 접점을 접속단자로 하여 접속되는 복수의 부하를 포함하는 것을 특징으로 하는 3-레벨 인버터.
- 제 1항에 있어서,양단이 상기 상단 스위치의 타단과 상기 하단 스위치의 타단에 각각 연결되는 보조 커패시터를 더 포함하는 것을 특징으로 하는 3-레벨 인버터.
- 제 1항 또는 제 2항에 있어서,각각의 상기 제1 스위치, 상기 제2 스위치, 상기 상단 스위치 및 상기 하단 스위치에 대한 온/오프를 제어하는 제어부를 더 포함하는 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 제어부는,상기 제1 스위치를 턴온 상태로 유지하는 경우, 상기 제2 스위치를 턴오프 상태로 유지하는 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 제어부는,상기 제2 스위치를 턴온 상태로 유지하는 경우, 상기 제1 스위치를 턴오프 상태로 유지하는 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 제어부는,상기 상단 스위치를 턴온 상태로 유지하는 경우, 상기 하단 스위치를 턴오프 상태로 유지하는 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 제어부는,상기 하단 스위치를 턴온 상태로 유지하는 경우, 상기 상단 스위치를 턴오프 상태로 유지하는 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 제어부는,상기 상단 스위치를 턴온하는 경우, 상기 제1 스위치가 소정시간 뒤진 시간에 턴온되도록 제어하는 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 제어부는,상기 하단 스위치를 턴온하는 경우, 상기 제2 스위치가 소정시간 뒤진 시간에 턴온되도록 제어하는 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 복수의 커패시터는, 정전용량이 동일한 것을 특징으로 하는 3-레벨 인버터.
- 제 3항에 있어서,상기 제1 스위치, 상기 제2 스위치, 상기 상단 스위치 및 상기 하단 스위치는, 각각이 트랜지스터 및 다이오드가 병렬로 연결된 구조를 이루는 것을 특징으로 하는 3-레벨 인버터.
- DC 입력전압을 분압 충전하는 복수의 커패시터, 상기 복수의 커패시터의 포지티브 단에 일단이 연결된 상단 스위치, 상기 복수의 커패시터의 네거티브 단에 일단이 연결된 하단 스위치, 각각이 상기 상단 스위치의 타단에 연결된 제1 스위치 및 상기 하단 스위치의 타단에 연결된 제2 스위치를 구비하며, 상기 제1 스위치 및 상기 제2 스위치가 서로 연결된 구조로 형성되는 복수의 레그, 양단이 상기 상단 스위치의 타단과 상기 하단 스위치의 타단에 각각 연결되는 보조 커패시터, 상기 하단 스위치의 타단에서 상기 상단 스위치의 타단으로 순방향을 갖도록 복수가 연결되어 형성되며, 그 사이의 접점이 상기 복수의 커패시터 사이의 접점과 연결되는 복수의 다이오드, 및 각각의 상기 레그의 상기 제1 스위치 및 상기 제2 스위치 사이의 접점과 상기 복수의 다이오드 사이의 접점을 접속단자로 하여 접속되는 복수의 부하를 구비하는 3-레벨 인버터의 제어방법에 있어서,상기 상단 스위치 또는 상기 하단 스위치를 턴온하는 단계;상기 상단 스위치를 턴온하는 경우에 상기 복수의 레그 중에서 적어도 하나의 상기 제1 스위치를 선택하는 단계; 및선택된 상기 제1 스위치를 소정시간 뒤진 시간에 턴온하는 단계를 포함하는 것을 특징으로 하는 3-레벨 인버터의 제어방법.
- 제 12항에 있어서,턴온된 상기 상단 스위치를 턴오프하는 단계; 및상기 하단 스위치를 턴온하는 단계를 더 포함하는 것을 특징으로 하는 3-레벨 인버터의 제어방법.
- 제 12항에 있어서,상기 상단 스위치를 턴온 상태로 유지하는 동안, 상기 하단 스위치를 턴오프 상태로 유지하는 단계; 및상기 제1 스위치를 턴온 상태로 유지하는 동안, 상기 제2 스위치를 턴오프 상태로 유지하는 단계를 더 포함하는 것을 특징으로 하는 3-레벨 인버터의 제어방법.
- 제 13항에 있어서,턴온된 상기 제1 스위치를 턴오프하는 단계; 및선택된 상기 제1 스위치와 쌍을 이루는 상기 제2 스위치를 턴온하는 단계를 더 포함하는 것을 특징으로 하는 3-레벨 인버터의 제어방법.
- 제 15항에 있어서,상기 하단 스위치를 턴오프하는 단계; 및상기 상단 스위치를 턴온하는 단계를 더 포함하는 것을 특징으로 하는 3-레벨 인버터의 제어방법.
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US13/518,636 US8902615B2 (en) | 2009-12-23 | 2009-12-23 | Load-segmentation-based 3-level inverter and method of controlling the same |
PCT/KR2009/007696 WO2011078425A1 (ko) | 2009-12-23 | 2009-12-23 | 부하의 세그먼테이션을 고려한 3-레벨 인버터 및 그 제어방법 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5781418A (en) * | 1996-12-23 | 1998-07-14 | Philips Electronics North America Corporation | Switching scheme for power supply having a voltage-fed inverter |
US7173467B2 (en) * | 2005-03-31 | 2007-02-06 | Chang Gung University | Modified high-efficiency phase shift modulation method |
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KR100426650B1 (ko) * | 2001-10-15 | 2004-04-14 | 주식회사 포스콘 | 중성점 전압 불균형을 고려한 3-레벨 공간전압벡터펄스폭변조방법과 그 장치 |
JP4244005B2 (ja) * | 2003-10-28 | 2009-03-25 | 富士電機ホールディングス株式会社 | 多レベル出力電力変換装置 |
KR20060055415A (ko) * | 2004-11-18 | 2006-05-23 | 학교법인 동국대학교 | 영전압-영전류 스위칭을 이용한 3 레벨 직류-직류 컨버터 |
KR100942288B1 (ko) * | 2008-05-27 | 2010-02-16 | 한국전기연구원 | 풀 브릿지 인버터의 다출력 구조인 전원장치 |
US20130119762A1 (en) * | 2009-12-23 | 2013-05-16 | Seong Jeub Jeon | Load-segmentation-based full bridge inverter and method for controlling same |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5781418A (en) * | 1996-12-23 | 1998-07-14 | Philips Electronics North America Corporation | Switching scheme for power supply having a voltage-fed inverter |
US7173467B2 (en) * | 2005-03-31 | 2007-02-06 | Chang Gung University | Modified high-efficiency phase shift modulation method |
Non-Patent Citations (2)
Title |
---|
FRANCISCO CANALES ET AL.: "A Zero Voltage Switching Three-Level DC/DC Converter", 2000 IEEE, September 2000 (2000-09-01), pages 512 - 517 * |
JOSE RODRIGUEZ ET AL.: "Multilevel Inverters: A Survey of Topologies, Controls, and Applicatons", 2002 IEEE, vol. 49, August 2002 (2002-08-01), pages 724 - 738, XP011073746 * |
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US8902615B2 (en) | 2014-12-02 |
KR101449573B1 (ko) | 2014-10-08 |
US20120326506A1 (en) | 2012-12-27 |
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