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WO2025206308A1 - Dispositif de commande d'onduleur - Google Patents

Dispositif de commande d'onduleur

Info

Publication number
WO2025206308A1
WO2025206308A1 PCT/JP2025/012779 JP2025012779W WO2025206308A1 WO 2025206308 A1 WO2025206308 A1 WO 2025206308A1 JP 2025012779 W JP2025012779 W JP 2025012779W WO 2025206308 A1 WO2025206308 A1 WO 2025206308A1
Authority
WO
WIPO (PCT)
Prior art keywords
vector
degrees
state
phase
inverter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2025/012779
Other languages
English (en)
Japanese (ja)
Inventor
伸起 北野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of WO2025206308A1 publication Critical patent/WO2025206308A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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

Definitions

  • This disclosure relates to an inverter control device that controls a three-phase inverter using space vector modulation.
  • a third aspect of the present disclosure is characterized in that, in the first or second aspect, when the state of the three-phase inverter (10) is represented by a vector (xyz) where x indicates the state of the U phase, y indicates the state of the V phase, z indicates the state of the W phase, a value of 1 indicates a state where the upper arm switches (11 to 13) are on and the lower arm switches (14 to 16) are off, and a value of 0 indicates a state where the upper arm switches (11 to 13) are off and the lower arm switches (14 to 16) are on, and when the electrical angle when one of the four types of use vectors is switched and the other basic space vector is vector (100) is considered to be 0 degrees, the period during which the zero vector used at the first timing of each carrier cycle is vector (000) starts at an electrical angle obtained by adding the predetermined angle to 0 degrees and continues for a period of 60 electrical degrees.
  • a fourth aspect of the present disclosure is characterized in that, in the first or second aspect, when the state of the three-phase inverter (10) is represented by a vector (xyz) where x indicates the state of the U phase, y indicates the state of the V phase, z indicates the state of the W phase, a value of 1 indicates a state where the upper arm switches (11 to 13) are on and the lower arm switches (14 to 16) are off, and a value of 0 indicates a state where the upper arm switches (11 to 13) are off and the lower arm switches (14 to 16) are on, and when the electrical angle when one of the four types of use vectors is switched and the other basic space vector is vector (100) is considered to be 0 degrees, the period during which the zero vector used at the first timing of each carrier cycle is vector (111) starts at an electrical angle obtained by adding the predetermined angle to 0 degrees and continues for a period of 60 electrical degrees.
  • a fifth aspect of the present disclosure is characterized in that, in the second aspect, when the state of the three-phase inverter (10) is represented by a vector (xyz) where x indicates the state of the U phase, y indicates the state of the V phase, z indicates the state of the W phase, a value of 1 indicates a state where the upper arm switches (11 to 13) are on and the lower arm switches (14 to 16) are off, and a value of 0 indicates a state where the upper arm switches (11 to 13) are off and the lower arm switches (14 to 16) are on, and when the electrical angle when one of the four types of use vectors is switched and the other basic space vector is vector (100) is considered to be 0 degrees, the zero vector used at the first timing of each carrier cycle during the period when the electrical angle is between 30 degrees and 90 degrees becomes vector (000).
  • a sixth aspect of the present disclosure is characterized in that, in the first aspect, when the state of the three-phase inverter (10) is represented by a vector (xyz) where x indicates the state of the U phase, y indicates the state of the V phase, z indicates the state of the W phase, a value of 1 indicates a state where the upper arm switches (11 to 13) are on and the lower arm switches (14 to 16) are off, and a value of 0 indicates a state where the upper arm switches (11 to 13) are off and the lower arm switches (14 to 16) are on, when one of the four types of use vectors is switched and the electrical angle when the other basic space vector is vector (100) is considered to be 0 degrees, the zero vector used at the first timing of each carrier cycle during the period when the electrical angle is between 30 degrees and 90 degrees becomes vector (111).
  • a seventh aspect of the present disclosure is any one of the first to sixth aspects, characterized in that when the frequency of the output voltage of the three-phase inverter (10) exceeds a predetermined value higher than the median of the operating frequency range of the three-phase inverter (10), the inverter period is set to an integer multiple of the carrier period.
  • the frequency of the output voltage of the three-phase inverter (10) exceeds a predetermined value that is higher than the median value of the operating frequency range of the three-phase inverter (10), it is possible to obtain the effect of suppressing pulsation in the output current of the three-phase inverter (10).
  • An eighth aspect of the present disclosure is an inverter control device that uses space vector modulation to control a three-phase inverter (10) having upper arm switches (11-13) and lower arm switches (14-16) connected in series for each phase, and is characterized in that the inverter period is an integer multiple of the carrier period, and the triangular wave used as the carrier wave is switched between a triangular wave starting with a positive slope and a triangular wave starting with a negative slope every 60 electrical degrees.
  • the trajectory of the voltage vector in each inverter cycle can be made symmetrical. Therefore, the unbalance rate of the output voltage of the three-phase inverter (10) can be reduced, and pulsation in the output current of the three-phase inverter (10) can be suppressed.
  • a ninth aspect of the present disclosure is the eighth aspect, wherein, in each carrier cycle, the state of the three-phase inverter (10) is switched to four types of use vectors including two adjacent types of basic space vectors out of six types of basic space vectors and zero vectors, namely, a first zero vector and a second zero vector, so as to minimize the number of switching operations, and the three-phase inverter (10) is switched to a vector (xyz) where x indicates the state of the U phase, y indicates the state of the V phase, z indicates the state of the W phase, a value of 1 indicates a state in which the upper arm switches (11 to 13) are on and the lower arm switches (14 to 16) are off, and a value of 0 indicates a state in which the upper arm switches (11 to 13) are off and the lower arm switches (14 to 16) are on.
  • the basic space vector having a longer time duration in the carrier cycle of the two types of basic space vectors included in the four types of usage vectors is either (001), (010), or (100)
  • a triangular wave starting with one of a positive and negative slope is used as the carrier wave
  • the basic space vector having a longer time duration in the carrier cycle of the two types of basic space vectors included in the four types of usage vectors is either (011), (101), or (110)
  • a triangular wave starting with the other of a positive and negative slope is used as the carrier wave.
  • a tenth aspect of the present disclosure is characterized in that, in the eighth or ninth aspect, when the frequency of the output voltage of the three-phase inverter (10) exceeds a predetermined value higher than the median of the operating frequency range of the three-phase inverter (10), the inverter period is set to an integer multiple of the carrier period.
  • the tenth aspect of the present disclosure can achieve the effect of suppressing pulsation in the output current of the three-phase inverter (10) when the frequency of the output voltage of the three-phase inverter (10) exceeds a predetermined value that is higher than the median value of the operating frequency range of the three-phase inverter (10).
  • FIG. 1 is a circuit diagram showing the configuration of an inverter device including an inverter control device according to a first embodiment of the present disclosure.
  • FIG. 2 is an explanatory diagram illustrating the fundamental space vectors and zero vectors of a three-phase inverter.
  • FIG. 3 is a timing chart showing the carrier wave, the three-phase switching signals, and the state of the three-phase inverter.
  • FIG. 4 is an explanatory diagram showing the general shape of the locus of a voltage vector indicating the state of a three-phase inverter in each inverter cycle, and the basic space vector included in the use vector.
  • FIG. 5 is an explanatory diagram showing the locus of the voltage vector in parts I to IV of FIG.
  • FIG. 6 is a view corresponding to FIG. 4 of the second embodiment.
  • the three-phase inverter (10) can take on eight vector (voltage vector) states V0 to V7.
  • x indicates the U-phase state
  • y indicates the V-phase state
  • z indicates the W-phase state.
  • a value of 1 indicates that the upper arm switches (11 to 13) are on and the lower arm switches (14 to 16) are off
  • a value of 0 indicates that the upper arm switches (11 to 13) are off and the lower arm switches (14 to 16) are on.
  • vectors V0 to V7 are expressed as (xyz), vector V0 is (000), vector V1 is (001), vector V2 is (010), vector V3 is (011), vector V4 is (100), vector V5 is (101), vector V6 is (110), and vector V7 is (111).
  • Vectors V0 and V7 are zero vectors, and hereinafter correspond to the first zero vector and second zero vector, respectively.
  • Vector V1, vector V2, vector V3, vector V4, vector V5, and vector V6 are six types of basic space vectors. Adjacent vectors in Figure 2 are hereinafter referred to as "adjacent vectors.”
  • vector V1 and vector V3 are adjacent to each other.
  • Vector V3 and vector V2 are adjacent to each other.
  • Vector V2 and vector V6 are adjacent to each other.
  • Vector V6 and vector V4 are adjacent to each other.
  • Vector V4 and vector V5 are adjacent to each other.
  • Vector V5 and vector V1 are adjacent to each other.
  • the inverter control device (20) When switching the state of the three-phase inverter (10) between basic space vectors, the inverter control device (20) switches the state of only one phase. For example, as shown in FIG. 3, when switching the state of the three-phase inverter (10) between vector V4 and vector V6, the inverter control device (20) switches only the state of the V phase, indicated by the value of y. Furthermore, when switching the state of the three-phase inverter (10) between the basic space vector and the zero vector, the inverter control device (20) switches only the state of one phase. For example, as shown in FIG. 3, when switching the state of the three-phase inverter (10) between vector V4 and vector V0, the inverter control device (20) switches only the state of the U phase, indicated by the value of x.
  • the inverter control device (20) controls the three-phase inverter (10) by space vector modulation so that the state of the three-phase inverter (10) at the beginning of each of a plurality of consecutive carrier cycles becomes a zero vector.
  • each carrier cycle means each of the carrier cycles that make up a plurality of consecutive carrier cycles.
  • the inverter control device (20) switches the triangular wave used as the carrier wave between a triangular wave starting with a positive slope and a triangular wave starting with a negative slope every 60 electrical degrees. As a result, the inverter control device (20) switches the zero vector used at the first timing of each carrier cycle between the first zero vector and the second zero vector every 60 electrical degrees. Specifically, in part II of Figure 4, the inverter control device (20) switches the state of the three-phase inverter (10) at the beginning of each carrier cycle from vector V0 to vector V7. Also, in part IV of Figure 4, the inverter control device (20) switches the state of the three-phase inverter (10) at the beginning of each carrier cycle from vector V7 to vector V0. As shown in FIG.
  • the period during which the zero vector used at the first timing of each carrier cycle is the vector (111) may start at an electrical angle obtained by adding the predetermined angle other than 30 degrees to 0 degrees and continue for a period of 60 electrical degrees.
  • the period during which the zero vector used at the first timing of each carrier cycle is the vector (000) may start at an electrical angle obtained by adding the predetermined angle other than 30 degrees to 0 degrees and continue for a period of 60 electrical degrees.
  • This disclosure is useful as an inverter control device that controls a three-phase inverter using space vector modulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

Le présent dispositif de commande d'onduleur : commute, dans chaque cycle de porteuse, l'état d'un onduleur triphasé parmi quatre types de vecteurs d'utilisation de telle sorte que le nombre de temps de commutation est réduit au minimum ; commute un vecteur d'espace de base inclus dans les quatre types de vecteurs d'utilisation à un vecteur d'espace de base différent chaque angle électrique de 60 degrés ; et commute un vecteur nul, qui est utilisé au premier moment de chaque cycle de porteuse, entre deux types de vecteurs nuls tous les angles électriques de 60 degrés. Lorsque six angles électriques par cycle de l'onduleur au moment de la commutation vectorielle spatiale de base sont considérés comme étant à 0, 60, 120, 180, 240, et 300 degrés, six angles électriques par cycle de l'onduleur au moment de la commutation vectorielle nulle deviennent les angles obtenus par ajout, aux six angles électriques au moment de la commutation vectorielle spatiale de base, du même angle prescrit supérieur ou égal à 15 degrés mais inférieur à 45 degrés.
PCT/JP2025/012779 2024-03-28 2025-03-28 Dispositif de commande d'onduleur Pending WO2025206308A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2024053048 2024-03-28
JP2024-053048 2024-03-28

Publications (1)

Publication Number Publication Date
WO2025206308A1 true WO2025206308A1 (fr) 2025-10-02

Family

ID=97215535

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2025/012779 Pending WO2025206308A1 (fr) 2024-03-28 2025-03-28 Dispositif de commande d'onduleur

Country Status (2)

Country Link
JP (1) JP2025156225A (fr)
WO (1) WO2025206308A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02193587A (ja) * 1988-10-28 1990-07-31 Toyo Electric Mfg Co Ltd 誘導電動機の瞬時電流制御方式
JP2014204560A (ja) * 2013-04-05 2014-10-27 株式会社日立製作所 インバータ装置、またはこれを制御するインバータ制御装置
WO2018181506A1 (fr) * 2017-03-28 2018-10-04 ダイキン工業株式会社 Procédé de modulation de durée d'impulsion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02193587A (ja) * 1988-10-28 1990-07-31 Toyo Electric Mfg Co Ltd 誘導電動機の瞬時電流制御方式
JP2014204560A (ja) * 2013-04-05 2014-10-27 株式会社日立製作所 インバータ装置、またはこれを制御するインバータ制御装置
WO2018181506A1 (fr) * 2017-03-28 2018-10-04 ダイキン工業株式会社 Procédé de modulation de durée d'impulsion

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