WO2007129755A1 - 交流-交流直接変換装置のスイッチングパターン生成方法 - Google Patents
交流-交流直接変換装置のスイッチングパターン生成方法 Download PDFInfo
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- WO2007129755A1 WO2007129755A1 PCT/JP2007/059688 JP2007059688W WO2007129755A1 WO 2007129755 A1 WO2007129755 A1 WO 2007129755A1 JP 2007059688 W JP2007059688 W JP 2007059688W WO 2007129755 A1 WO2007129755 A1 WO 2007129755A1
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Classifications
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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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/297—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal for conversion of frequency
-
- 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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
- H02M7/53876—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output based on synthesising a desired voltage vector via the selection of appropriate fundamental voltage vectors, and corresponding dwelling times
-
- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/123—Suppression of common mode voltage or current
Definitions
- the present invention relates to a single-phase or multi-phase AC power supply power.
- the present invention relates to an AC-AC direct conversion device (matrix converter) that converts an input voltage or frequency into an arbitrary voltage or frequency and outputs the voltage or frequency.
- the virtual input converter combines 2n basic vectors that connect different input phases to the P side and N side of the virtual DC link and n zero voltage vectors that have the same phase connected to the P side and N side.
- a switching pattern is generated, and the virtual output converter generates 2 + 2n types of basic vectors including two zero-voltage vectors, and controls each bidirectional switch with a switching pattern composed of these patterns.
- the present invention relates to a switching pattern generation method.
- Each phase of R, S, and T of the power supply 1 is inserted with an input filter (InputFilter) 2 and an AC / AC direct conversion circuit 3 with a bidirectional switch Sl to S9, and each direction is controlled by a controller (controller) 4
- PWM control of the switch By performing PWM control of the switch at a frequency sufficiently higher than the power supply frequency, AC output of U, V, and W controlled to any voltage or frequency is obtained while directly applying the input voltage to the load such as a motor.
- the switching pattern of the bidirectional switch in the AC direct conversion device is created according to the PWM converter pattern that becomes a signal synchronized with the input voltage, the output frequency and the voltage, for example, in the case of the modulation method by the carrier amplitude. This is determined by the AND condition with the PWM inverter pattern.
- the input current of the AC-AC direct conversion device is limited by the PWM converter pattern, the output voltage and frequency are controlled by the PWM inverter pattern, and the input current is made sine wave while keeping the input power factor “1”. Simplifies output waveform and frequency conversion operation at the same time.
- the bidirectional switch is unidirectional as shown. In some cases, a plurality of switches are used.
- the carrier comparison method generates a PWM pattern by comparing the size of a triangular wave carrier and a sine wave.
- the carrier comparison method applied to the virtual DC link method includes the carrier of the virtual input converter and the virtual PWM pulse force. It is proposed to reduce the switching loss and noise by reducing the number of switching of the PWM control switch to the same number, thereby improving the output voltage control accuracy (for example, Patent Document 1). reference).
- the space vector modulation method is a method of selecting an instantaneous space current vector in accordance with the switching state of each bidirectional switch of the AC / AC direct conversion device, and the switching pattern is determined by this selection.
- a method employing this space vector modulation method has also been proposed (see Non-Patent Document 1, for example).
- this space vector modulation method by selecting an appropriate switching pattern, it is possible to reduce the number of switching times, reduce switching loss, and reduce load current change to reduce output voltage distortion.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-168198, which is a published patent gazette in Japan
- Non-patent document 1 “Analysis method of AC-AC direct conversion circuit, IEEJ Transactions, SPC97- 53”, a document published in Japan
- Non-Patent Document 2 “Space Vector Modulated Three — Phase to Three— Pnase Matrix Converter with Input Power Fact or Correction L. Huver et al. IEEE trans. On Industry Applications, vol. 31, No. 6, 1995 "
- Patent Document 1 and Non-Patent Documents 1 and 2 it is proposed in Patent Document 1 and Non-Patent Documents 1 and 2 to employ a carrier comparison method or a space vector modulation method for generating a PWM pattern of an AC / AC direct conversion device. .
- Patent Document 1 is a case where a carrier comparison method is adopted for generating a PWM pattern. This carrier comparison method cannot be applied to the space vector modulation method because the arrangement order of PWM pulses is not determined. ,.
- Non-Patent Document 1 is a case where a spatial beta modulation method is adopted for an AC-AC direct AC / AC direct conversion device, but it is applied to a virtual DC link AC / AC direct conversion device. Can not.
- Non-Patent Document 2 proposes that the virtual DC link type AC / AC direct conversion device performs PWM control of the bidirectional switch by a spatial beta modulation method. Depending on the switching pattern that does not mention the connection state, harmonic noise and switching frequency may increase.
- the purpose of the present invention is to generate a switching pattern by combining a virtual input converter with six basic vectors and three zero voltage vectors, and a virtual output inverter with eight basic vectors including two zero voltage vectors. Switching harmonics and switches in an AC / AC direct conversion device that generates a switching pattern and PWM-controls each bidirectional switch with a switching pattern that combines the switching patterns of the virtual input converter and the virtual output inverter. It is to provide a method for generating a switching pattern that is excellent in reducing the number of times.
- the present invention for solving this problem is characterized by the following method.
- the virtual input converter has different inputs on the P side and N side of the virtual DC link.
- the switching pattern is generated by combining 2n basic vectors that connect the force phase and n zero voltage vectors that are connected in phase on the P and N sides, and the virtual output inverter includes two zero voltage vectors 2 +
- an n-phase AC / AC direct conversion device that generates switching patterns with 2n basic vectors and controls each bidirectional switch with a switching pattern that combines the switching patterns of the virtual input converter and the virtual output inverter.
- the synthesized switching pattern is characterized in that a switching pattern of a zero voltage vector is selected so that one phase does not always change within an arbitrary switching period and approximated to a two-phase modulation state.
- the virtual input converter has 2n basic vectors that connect different input phases to the P side and N side of the virtual DC link, respectively, and n that has the same phase connected to the P side and N side.
- a switching pattern is generated by combining zero voltage vectors, and the virtual output inverter generates switching patterns with 2 + 2n basic vectors including two zero voltage vectors, and each switching pattern of the virtual input converter and virtual output inverter In an n-phase AC / AC direct conversion device that controls each bidirectional switch with a switching pattern composed of
- the duty pulses of the current and voltage space vector that perform PWM control according to the duty of each basic vector are arranged in the order that two or more of the bidirectional switches are not switched simultaneously.
- the arrangement order is characterized in that an input sector one information power zero voltage vector is determined and determined according to even / odd discrimination information of input sector one and output sector one information.
- the control method for the AC direct conversion device of the virtual DC link system is based on the conversion circuit consisting of 9 sets of switches S1 to S9, which consists of a virtual input converter and a virtual output inverter. A combination of switches S 1 to S 12 is considered.
- the switching patterns of these switches S1 to S12 are 6 patterns (BaseVector) in which the virtual input converter connects different input phases to the P side and N side of the virtual DC link. : Basic vectors il to i6), and three patterns (iOr, iOs, iOt) of zero voltage vector states with the same phase connected to the P side and the N side.
- the virtual output converter has eight types of space vectors (v0 to v7) including two zero-voltage vector states.
- the input and output space vector sectors and basic vectors are defined as shown in Fig. 3.
- the virtual input converter in Fig. 3 is based on the input phase current vector Is, and the virtual output inverter is based on the output line voltage vector Vref. Both are expressed as vectors that rotate counterclockwise.
- Fig. 6 shows the relationship between the input and output vectors and the duty.
- the duty of the first basic vector of the input is A
- the duty of the second basic vector of the input is B
- the duty of the first basic vector of the output is X
- the duty of the second basic vector of the output is Y.
- the virtual DC link method combines these input and output duty commands to generate the final duty command. In other words, multiplying each duty, the four of AX, AY, BX, BY Generate a duty command value.
- the present invention proposes a switching table in which two or more phases are always switched one by one without switching at the same time as shown in the table of FIG.
- the numbers (1 to 9) for each phase indicate the ON states of the switches S1 to S9 of the left AC / AC direct converter of Fig. 1.
- Figure 3 shows the discrimination of each input / output sector. Also, the combination of the combined duty and the switch state can be derived by combining with virtual change.
- the pulse arrangement order of the composite duty is shown for each input / output sector combination.
- the switch order is: ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ... Wrap around and switch over.
- the duty command is updated at the point where it turns.
- the switch switching order and the switch selection at zero voltage are selected so that the number of switch switching is minimized within the control cycle.
- Another object of the present invention is to reduce the number of switch switchings at the time of transition between sectors and reduce the common mode voltage in addition to the optimal switching table in the steady state described above. It is to provide a pattern generation method.
- the present invention for solving this problem is characterized by the following method.
- the virtual input converter has 2n basic vectors that connect different input phases to the P side and N side of the virtual DC link, and n that have the same phase connected to the P side and N side.
- a switching pattern is generated by combining zero voltage vectors, and the virtual output inverter generates switching patterns with 2 + 2n basic vectors including two zero voltage vectors, and each switching pattern of the virtual input converter and virtual output inverter In an n-phase AC / AC direct conversion device that controls each bidirectional switch with a switching pattern composed of
- a zero voltage vector is constructed based on the intermediate voltage phase of the input phase voltage (power supply phase voltage) of the AC direct conversion circuit, and the input space vector is divided into two parts to reduce the common mode voltage. A switching pattern is determined.
- the virtual input converter has 2n basic vectors that connect different input phases to the P and N sides of the virtual DC link, and n that has the same phase connected to the P and N sides.
- a switching pattern is generated by combining zero voltage vectors, and the virtual output inverter generates switching patterns with 2 + 2n basic vectors including two zero voltage vectors, and each switching pattern of the virtual input converter and virtual output inverter In an n-phase AC / AC direct conversion device that controls each bidirectional switch with a switching pattern composed of
- the bidirectional switch is switched for each phase. To prevent simultaneous switching of two or more phases.
- the virtual input converter has 2n basic vectors that connect different input phases to the P side and N side of the virtual DC link, respectively, and n that have the same phase connected to the P side and N side. zero
- the voltage vector is combined to generate a switching pattern, and the virtual output inverter
- a switching pattern is generated with 2 + 2n types of basic vectors including two zero-voltage vectors, and each bidirectional switch is controlled with a switching pattern that combines the switching patterns of the virtual input converter and virtual output inverter n-phase In the AC direct conversion device,
- the switching table is changed according to the transition state for switching bidirectional switches, and simultaneous switching of two or more phases when switching between sectors is characterized.
- the virtual input converter has 2n basic vectors that connect different input phases to the P side and N side of the virtual DC link, and n that have the same phase connected to the P side and N side.
- a switching pattern is generated by combining zero voltage vectors, and the virtual output inverter generates switching patterns with 2 + 2n basic vectors including two zero voltage vectors, and each switching pattern of the virtual input converter and virtual output inverter In an n-phase AC / AC direct conversion device that controls each bidirectional switch with a switching pattern composed of
- the number of basic vector sectors to be transferred next is predicted to be limited to 5 patterns in advance, and it is possible to prevent two or more bidirectional switches from switching simultaneously when changing to the 5 patterns.
- the current pattern is changed to such a switch switching state.
- the virtual input converter has 2n basic vectors that connect different input phases to the P and N sides of the virtual DC link, and n that has the same phase connected to the P and N sides.
- a switching pattern is generated by combining zero voltage vectors, and the virtual output inverter generates switching patterns with 2 + 2n basic vectors including two zero voltage vectors, and each switching pattern of the virtual input converter and virtual output inverter In an n-phase AC / AC direct conversion device that controls each bidirectional switch with a switching pattern composed of
- the bidirectional switch When the bidirectional switch is in a state where two or more phases are simultaneously switched at the timing of updating between sectors at an arbitrary duty, the duty update at that moment is postponed and the next It is characterized in that the switch is not switched at the same time by updating the duty in the bidirectional switch state where two or more phases are not switched at the same time.
- the virtual input converter has 2n basic vectors for connecting different arbitrary input phases to the P side and the N side of the virtual DC link and the same phase on the P side and the N side.
- a switching pattern is generated by combining n zero voltage vectors connected to each other, and the virtual output inverter generates switching patterns with 2 + 2n types of space vectors including two zero voltage vectors.
- an n-phase AC / AC direct conversion device that controls each bidirectional switch, it is possible to generate superior switching patterns with less distortion of output voltage and switching loss by reducing harmonic noise and switching frequency.
- the switching pattern for reducing the number of switch switching at the time of transition between sectors and reducing the common mode voltage is provided. Can be generated.
- a virtual DC link type AC direct current converter control method consists of a 9-switch S1-S9 converter circuit that consists of a virtual input converter and a virtual output inverter. A combination of switches S 1 to S 12 is considered.
- the switching patterns of these switches S1 to S12 are 6 patterns (BaseVector) in which the virtual input converter connects different input phases to the P side and N side of the virtual DC link. : Basic vectors il to i6), and three patterns (iOr, iOs, iOt) of zero-voltage vector states where the same phase is connected to the P and N sides.
- the virtual output converter has eight basic vectors (v0 to v7) including two zero-voltage vector states.
- the input and output space vector sectors and basic vectors are defined as shown in Fig. 3.
- the switches SI, S2, S3 and switches S4, S5 Considering three combinations of S6 and S7, S8, and S9 for each output phase, there is a restriction condition when only one switch is ON in each set. Therefore, the total switching pattern of the three-phase Z3-phase direct conversion is limited to 27 patterns as shown in the table in Fig. 5, and they are defined as models ⁇ 27. However, it does not occur in the virtual DC link method until mode 6, 8, 12, 16, 20, 22 or more!
- Fig. 6 shows the relationship between the input and output vectors and the duty.
- the duty of the first basic vector of the input is ⁇
- the duty of the second basic vector of the input is ⁇
- the duty of the first basic vector of the output is X
- the duty of the second basic vector of the output is ⁇ .
- the virtual DC link method combines these input and output duty commands to generate the final duty command.
- the four duty command values of AX, AY, BX, and BY are generated by multiplying each duty.
- the combined zero voltage vector Z is obtained, and each pulse generation period in one switching cycle is defined.
- AC Direct-current converter is equipped with switches Sl, S2, S3 (U phase), switches S4, S5, S6 (V phase) and switches S7, S8 in Fig. 1 to prevent short-circuiting of the input phase.
- S9 group (W phase) must be controlled so that only one switch is turned on in each of the three groups. The combination of the three switches that are turned on is a total of 27 patterns as shown in the table in Fig. 5 above.
- the input vector sector 1 defined in FIG. 3 is “I”, and the output vector sector 1 is also “I”.
- the input sector is I
- the input first basic vector is i6
- the input second basic vector is il.
- the output sector 1 is also I
- the output first basic vector is v6
- the output second basic vector is vl. Therefore, from the table in Fig. 5, the combinations of the U, V and W phase switch connection states are “1, 5, 7”, “1, 5, 8”, “1, 6, 7”, “1, 6, 9”.
- the remaining zero voltage vector command Z can be switched in any of the three switching states of “1, 4, 7”, “2, 5, 8”, “3, 6, 9”.
- the other four duty commands are seen and selected according to the switch without changing in the ON state.
- the combination of “1, 4, 7” is selected for the zero voltage vector, and the sector Within one, determine the pattern so that “1” is always ON.
- combinations that do not switch one phase can be selected, so the zero voltage vector can be changed according to the input / output sector 1 state. If this is applied to general inverter control, it can be approximated to a state where “two-phase modulation” is performed.
- the switching pattern of the zero voltage vector is selected so that one phase does not always change within an arbitrary switching cycle, and control can be performed without switching the switch for one phase. Reduce the number of switch switchings by approximating the modulation state.
- the table in FIG. 8 shows the combined duty arrangement sequence of one side of a 9-section symmetrical arrangement for each input and output space vector sector and each input / output sector combination.
- 9 sections are symmetrically arranged in the order of AY ⁇ AX ⁇ BX ⁇ BY ⁇ Z ⁇ BY ⁇ BX ⁇ AX ⁇ AY.
- Z is divided into 2 and 5 sections + 5 sections are repeated, and the duty update is also performed at the timing of every 5 sections.
- the zero-phase vector “3, 6, 9” is selected, and the switch switching order is AY ⁇ AX ⁇ BX ⁇ BY ⁇ Z.
- the order is determined so that two or more switches do not switch simultaneously.
- sector 1 “1-1”, “1, 5, 8” ⁇ “1, 5, 7” ⁇ “1, 6, 7” ⁇ “1, 6, 9” ⁇ “3, 6, 9” And only one switch changes at any change.
- the pulse arrangement order is set (or tabulated) so that two or more bidirectional switches are not switched simultaneously. This reduces the effects of harmonic noise due to simultaneous switching of two or more phases, and reduces the number of switch switchings in one switching cycle.
- the power that can prevent the switches from switching simultaneously within one switching period in one arbitrary sector is “AY ⁇ AX ⁇ BX ⁇ BY ⁇ Z” or “AX ⁇ AY ⁇ BY ⁇ BX ⁇ Z”.
- this switching method determines whether the input / output sector is ⁇ even '' or ⁇ odd '' and if the combination is ⁇ even / even '' or ⁇ odd / odd '', ⁇ AY ⁇ AX ⁇ BX ⁇ BY ⁇ “Z” and “AX ⁇ AY ⁇ BY ⁇ BX ⁇ Z” in the case of “even” and “odd”.
- the input sector one information power zero voltage vector is determined without expanding all the tables of the second embodiment, and the input sector one and output sector one information are even / odd.
- the switch switching does not occur two or more times simultaneously within one switching period. If the switching cycle is started, for example, “AY ⁇ AX ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ”, of which “ ⁇ ⁇ ⁇ ” transitions to the second cycle It is not always possible to prevent switching at the same time by switching the switch. As an example, when the input / output sector is “II”, the switching of “ ⁇ ⁇ ⁇ ” is “3, 6, 9” ⁇ “1, 5, 8” from the table in Fig. 8. All switches will work. This is undesirable because it leads to higher harmonics and switch switching frequency and loss.
- the pulse arrangement sequence is repeated every time the duty command is updated. That is, “ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ” and so on.
- the switching table When the switching table is fixed and controlled as shown in the table of FIG. 8, the number of switch switchings in one calculation cycle within the same sector can be minimized.
- the switching pattern of force zero voltage vector that fixes the switching pattern of zero phase ⁇ is “1, 4, 7J“ 2 , 5, 8 ”,“ 3, 6, 9 ”exist as degrees of freedom (the numbers are shown in Fig. 1) This means that the switches S1 to S9 of the conversion circuit are on). Therefore, it is not always necessary to fix as shown in the table of FIG. Therefore, in this embodiment, the common mode voltage is reduced by using the degree of freedom of the combination of the zero voltage vectors.
- the zero voltage vector is based on the intermediate voltage phase that can reduce the voltage drop. It is desirable to configure. In other words, if the input intermediate voltage phase is the R phase, a combination of “1, 4, 7”, if the S phase is “2, 5, 8”, if it is the T phase, use a combination of “3, 6, 9”.
- the input space vector is divided for each of the six sectors shown in Fig.
- the switching tables are shown in the table in Fig. 10 and the table in Fig. 11.
- the subscript of 12 divisions of the input sector in FIG. 9 means the intermediate phase. For example, if it is 1 s, the sector S is 1 and the S phase is the intermediate phase.
- the zero voltage vector is configured by using the intermediate voltage phase in each sector, so that it is possible to realize noise reduction and malfunction prevention by reducing the common mode voltage.
- the number of switch switchings within one sector can be minimized.
- the transition state to switch the bidirectional switch of duty period Z that outputs the zero voltage vector has a degree of freedom, and all output UVW phases are connected to R phase “1, 4, 7”, S phase There are 3 sets of “2, 5, 8” connected to, and “3, 6, 9” connected to T phase.
- This degree of freedom will be explained using the table in Fig. 12. For example, assume that a space vector exists in the state “1-1” of the input sector 11 and the output sector 11 in FIG. At that time, considering the order in which the number of switch switchings is minimized using the above three zero voltage vectors, the six patterns shown in the table of Fig. 12 remain as possible.
- a table that prevents simultaneous switching of two or more phases can be selected actively in accordance with the state.
- sector 1 “1 1” force sector 1 “1-2” “1-6” “2-1” “2-2” “2-6”
- the switch state at the time of update is “3, 6, 9” and the transition to sector 1 “2-1J“ 2-2—2 ”“ 2-6 ”
- the duty must not be updated in the switch state “3, 6, 9” (limited to the steady operation state).
- the transition order between sectors can be predicted to some extent as described in the sixth embodiment, so that the pattern of transition between the next sector is also limited. (If it is a steady operation, the transition destination is limited to one state of five sectors). By using this, the processing that does not operate in the above-mentioned pattern with the possibility of simultaneous switching of two or more phases is given.
- the bidirectional switch switching operation is performed in the mode (pattern P6) including "3, 6, 9" in "1-1"
- the next sector is updated.
- the switching pattern to be prohibited before the transition is determined by focusing on the sector that is predicted to transition between the sectors in the normal operation in advance. And avoid the prohibited pattern.
- simultaneous switching of two or more phases can be prevented in any sector-one transition pattern as long as it is limited to steady operation.
- Embodiments 6 and 7 are methods that prevent simultaneous switching at the time of transition transition between sectors considering only minimizing the number of switching times of two or more phases. With regard to, clearly consider.
- the input phase voltage has a relationship of R> T> S. Therefore, from the viewpoint of reducing the common mode voltage, it is desirable to select the zero voltage vector of the T phase ⁇ 3, 6, 9 '' that is the intermediate phase.
- Sector 1 “1 1” must not contain “3, 6, 9”, thus creating a contradiction.
- the present embodiment uses the method of the sixth embodiment as a base, and includes patterns including “3, 6, 9” in “1 1” in the table of FIG. 13 and the table of FIG.
- the bidirectional switch is in the state of “3, 6, 9”, it is not updated, and the duty is returned when it returns to “1, 5, 8” by the folded symmetry method. Add a process to update.
- the timing for changing the duty is updated by two more than one calculation cycle compared to the method of the sixth embodiment.
- the common mode voltage reduction effect of the fifth embodiment and the simultaneous switching prevention of two or more phases during the sector-one transition transition of the sixth embodiment can be achieved.
- FIG. 1 Equivalent circuit diagram of a virtual DC link type AC AC converter.
- FIG. 2 A table of switching patterns of the virtual converter.
- FIG. 3 Space vector sector 1 and basic vector diagram.
- FIG. 4 A table of synthesis results of virtual switching patterns.
- FIG. 7 A diagram of a pulse generation period in one switching cycle.
- FIG. 8 A table of combined duty arrangement order in each sector one state.
- FIG. 9 A basic vector diagram with 12 divisions of one space vector sector.
- FIG. 12 Pulse pattern in sector one state “I one I”.
- FIG. 13 A pulse pattern related to the sector one state “I one I” (part 1).
- FIG. 14 Pulse pattern related to sector one state “I one I” (part 2).
- FIG. 15 is a basic configuration diagram of an AC-AC direct conversion device.
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN2007800169215A CN101443992B (zh) | 2006-05-10 | 2007-05-10 | 用于交流-交流直接变换装置的切换图案创建方法 |
EP07743123.7A EP2034598A4 (en) | 2006-05-10 | 2007-05-10 | Switching pattern creating method for ac-ac direct conversion device |
Applications Claiming Priority (4)
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JP2006-131036 | 2006-05-10 | ||
JP2006131037A JP4862476B2 (ja) | 2006-05-10 | 2006-05-10 | 交流−交流直接変換装置のスイッチングパターン生成方法 |
JP2006131036A JP4862475B2 (ja) | 2006-05-10 | 2006-05-10 | 交流−交流直接変換装置のスイッチングパターン生成方法 |
JP2006-131037 | 2006-05-10 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2157683A2 (en) | 2008-08-20 | 2010-02-24 | Hamilton Sundstrand Corporation | Power conversion architecture with zero common mode voltage |
WO2010069892A1 (fr) * | 2008-12-18 | 2010-06-24 | Schneider Toshiba Inverter Europe Sas | Variateur de vitesse de type convertisseur matriciel |
WO2010069891A1 (fr) * | 2008-12-18 | 2010-06-24 | Schneider Toshiba Inverter Europe Sas | Variateur de vitesse de type convertisseur matriciel |
Families Citing this family (2)
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JP4957303B2 (ja) | 2007-03-14 | 2012-06-20 | 株式会社明電舎 | 交流−交流直接変換装置の空間ベクトル変調方法 |
EP2549638A1 (de) * | 2011-07-19 | 2013-01-23 | AEG Power Solutions B.V. | Stromversorgungsanordnung für einen Reaktor zur Polysiliciumherstellung mit einem Frequenzumrichter |
Citations (1)
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JP2005168198A (ja) | 2003-12-03 | 2005-06-23 | Fuji Electric Holdings Co Ltd | 交流交流直接変換器の制御装置 |
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2007
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JP2005168198A (ja) | 2003-12-03 | 2005-06-23 | Fuji Electric Holdings Co Ltd | 交流交流直接変換器の制御装置 |
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"An Analysis Method of AC-AC Direct Converters", THE JOURNAL OF THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN |
HUBER L. ET AL.: "Space Vector Modulated Three-Phase to Three-Phase Matrix Converter with Input Power Factor Correction", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol. 31, no. 6, 1995, pages 1234 - 1246, XP000550007 * |
JUSSILA M. ET AL.: "Realization of a Three-Phase Indirect Matrix Converter with an Indirect Vector Modulation Method", POWER ELECTRONICS SPECIALISTS CONFERENCE, 2003. PESC'03. 2003 IEEE 34TH ANNUAL, vol. 2, 2003, pages 689 - 694, XP010648893 * |
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See also references of EP2034598A4 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2157683A2 (en) | 2008-08-20 | 2010-02-24 | Hamilton Sundstrand Corporation | Power conversion architecture with zero common mode voltage |
EP2157683A3 (en) * | 2008-08-20 | 2010-08-11 | Hamilton Sundstrand Corporation | Power conversion architecture with zero common mode voltage |
US7952896B2 (en) | 2008-08-20 | 2011-05-31 | Hamilton Sundstrand Corporation | Power conversion architecture with zero common mode voltage |
WO2010069892A1 (fr) * | 2008-12-18 | 2010-06-24 | Schneider Toshiba Inverter Europe Sas | Variateur de vitesse de type convertisseur matriciel |
WO2010069891A1 (fr) * | 2008-12-18 | 2010-06-24 | Schneider Toshiba Inverter Europe Sas | Variateur de vitesse de type convertisseur matriciel |
FR2940552A1 (fr) * | 2008-12-18 | 2010-06-25 | Schneider Toshiba Inverter | Variateur de vitesse de type convertisseur matriciel |
FR2940553A1 (fr) * | 2008-12-18 | 2010-06-25 | Schneider Toshiba Inverter | Variateur de vitesse de type convertisseur matriciel |
CN102257715A (zh) * | 2008-12-18 | 2011-11-23 | 施耐德东芝换流器欧洲公司 | 矩阵转换器型变速设备 |
JP2012513182A (ja) * | 2008-12-18 | 2012-06-07 | シュネーデル、トウシバ、インベーター、ヨーロッパ、ソシエテ、パル、アクション、セプリフエ | マトリクスコンバータ変速ドライブ |
JP2012513181A (ja) * | 2008-12-18 | 2012-06-07 | シュネーデル、トウシバ、インベーター、ヨーロッパ、ソシエテ、パル、アクション、セプリフエ | マトリクスコンバータタイプの変速装置 |
Also Published As
Publication number | Publication date |
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EP2034598A1 (en) | 2009-03-11 |
EP2034598A4 (en) | 2017-02-22 |
RU2387069C1 (ru) | 2010-04-20 |
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