WO1995002921A1 - Appareil et procede de regulation du courant d'un entrainement a vitesse variable - Google Patents

Appareil et procede de regulation du courant d'un entrainement a vitesse variable Download PDF

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Publication number
WO1995002921A1
WO1995002921A1 PCT/JP1993/000986 JP9300986W WO9502921A1 WO 1995002921 A1 WO1995002921 A1 WO 1995002921A1 JP 9300986 W JP9300986 W JP 9300986W WO 9502921 A1 WO9502921 A1 WO 9502921A1
Authority
WO
WIPO (PCT)
Prior art keywords
time
arm
vector
arm modulation
modulation
Prior art date
Application number
PCT/JP1993/000986
Other languages
English (en)
Japanese (ja)
Inventor
Yasuhiro Yamamoto
Original Assignee
Kabushiki Kaisha Meidensha
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
Priority to JP4006152A priority Critical patent/JPH05199796A/ja
Priority claimed from JP4006152A external-priority patent/JPH05199796A/ja
Application filed by Kabushiki Kaisha Meidensha filed Critical Kabushiki Kaisha Meidensha
Priority to KR1019940700309A priority patent/KR950702074A/ko
Priority to KR1019940700309A priority patent/KR0125326B1/ko
Priority to PCT/JP1993/000986 priority patent/WO1995002921A1/fr
Priority to US08/193,052 priority patent/US5623192A/en
Priority to CA002142618A priority patent/CA2142618C/fr
Priority to EP93916172A priority patent/EP0661796B1/fr
Priority to CN93116762A priority patent/CN1038010C/zh
Priority to DE69322400T priority patent/DE69322400T2/de
Publication of WO1995002921A1 publication Critical patent/WO1995002921A1/fr

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
    • 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
    • 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

Definitions

  • the present invention relates to a device for performing current control of a so-called variable speed drive device (hereinafter referred to as a variable speed drive device) for improving current control characteristics near a voltage saturation of a current control system of a voltage type PWM inverter, and a method for implementing the same.
  • a variable speed drive device for performing current control of a so-called variable speed drive device (hereinafter referred to as a variable speed drive device) for improving current control characteristics near a voltage saturation of a current control system of a voltage type PWM inverter, and a method for implementing the same.
  • a variable speed drive device for improving current control characteristics near a voltage saturation of a current control system of a voltage type PWM inverter
  • Fig. 1 shows the configuration of a variable-speed drive using a voltage-type PWM (pulse width modulation) inverter disclosed in Japanese Patent Application No. 7983/1990 filed on January 17, 1990.
  • PWM pulse width modulation
  • reference numeral 1 denotes a vector control unit that uses data such as a speed or torque command and speed detection
  • reference numeral 2 denotes an ACR (current) control unit that performs current control calculations based on the current command of the vector control unit
  • Reference numeral 3 denotes a PWM pattern generator that calculates a three-phase PWM pattern from the voltage amplitude and phase command of the voltage space vector of the ACR control unit and issues a PWM command based on the PWM pattern.
  • Reference numeral 5 denotes a gate signal circuit
  • reference numeral 6 denotes a drive circuit
  • reference numeral 7 denotes an inverter main circuit
  • reference numeral 8 denotes an induction motor. Further, in FIG.
  • reference numeral 9 is a voltage detector
  • reference numeral 10 is a current detector
  • reference numeral 11 is a speed detector
  • Symbols 1 and 2 are a sample and hold circuit that holds the output current at that time until the end of AZD conversion in synchronization with the 0 (zero) vector intermediate sample and hold signal from the PWM pattern generator.
  • a converter 22 is an adder that obtains a power supply speed ⁇ 0 from the rotor speed ⁇ ⁇ ⁇ from the speed detector 11 and the slip angular speed cs.
  • FIG. 5 shows a block circuit of the PWM pattern generator 3.
  • reference numeral 31 denotes 60 ° from the vector voltage command V from the ACR control unit 1 and the output voltage phase command V.
  • reference numeral 32 is a half PWM time T as shown in FIG. 2 0 base click preparative Le time To the voltage base-vector time Tauramuda, make bisecting the time de one data on both sides of the T, the time data T 2, the time data for 3-arm modulation that outputs T 3 Shows the creation unit.
  • reference numeral 3 3 time data T !, T 2 the time switching switch for converting the T 3 phase voltage time Tu, Tv, the Tw, 34 is the time Ding 11, T v. Tw and Suitsu quenching phases Shows ONZOF F switching circuit that outputs voltage signals Vu, Vv. Vw (PWM pattern).
  • reference numeral 35 6 0 0 each mode selection circuit of the output voltage phase 0v from AC R controller, reference numeral 36 6 0 ° each mode selection circuit output is input 60.
  • Reference phase output table that outputs the reference phase I for each output.
  • Reference numeral 37 is the output voltage phase 0 minus the reference phase for each 60 °, and the output voltage phase ⁇ limited to 60 ° is converted to the PWM pattern calculation unit 3.
  • a switch selection table for controlling the time switching switch 33 by the output of the mode selection circuit 35 for each, reference numeral 39 denotes a switching ON / OFF control circuit for controlling the ONZOFF switching circuit with the PWM time Tc and sampling current. .
  • the above PWM pattern is calculated by the circle approximation method, the 0 vector time ⁇ 0 is divided into two equal parts on both sides of the time ⁇ , ⁇ , and the current is coupled at the break point of the PWM pattern (hereinafter referred to as 3
  • the arm modulation method as the output voltage increases, the width of the zero vector decreases.
  • Figures 7 ( ⁇ ) and ( ⁇ ) show the vector before and after the occurrence of the zero vector chip, respectively.
  • Fig. 7 when the dead time compensation shifts the zero vector period at point ⁇ to point D as shown in ( ⁇ ⁇ ⁇ ), the zero vector is missing at point ⁇ , and the zero vector appears earlier at point D.
  • the locus of the current vector is as shown in Fig. 8. In this case, the locus of the current vector is the same up to “1” and “2”, but the period of “3” becomes longer. Therefore, the current vector moves greatly. Since “4”, “5”, and “6” remain the same, the period of “3” is shorter than the current vector locus (not shown) in the case of FIG. 7 (A) in which 0 vector is not missing.
  • the vector period of “7” becomes shorter by the increase of 0 vector, and the 0 vector period of “8” also becomes 0 vector that should have been in the period of “3”.
  • the end of the "9" coincides with the beginning of the "1".
  • the PWM pattern has the same voltage component, the current differs depending on the location where the 0 vector is inserted.
  • the present invention has been made in view of such a conventional problem, and its purpose is to change the PWM pattern from the three-arm modulation scheme to the two-arm modulation scheme near the voltage saturation without changing the ACR control system.
  • An object of the present invention is to provide an apparatus and a method for performing current control of a variable-speed drive device in which ACR control characteristics near voltage saturation are improved by switching to the method. Disclosure of the invention
  • An apparatus for performing current control of a variable-speed driving device includes: a PWM pattern calculation unit that calculates a three-phase PWM pattern from a voltage command and an output voltage phase of a current control unit; A time data for 3-arm modulation for generating time data for 3-arm modulation from a voltage vector time including the 0 vector time, a time switching switch for switching the time data for each phase, and the voltage vector.
  • the time data generation unit for two-arm modulation that generates time data of the two-arm modulation method from the torque vector time is compared with the zero vector time and the dead time compensation set value.
  • a comparison circuit that outputs a two-arm modulation switching signal; and a modulation switching switch that switches between the 3-arm modulation time data and the 2-arm modulation time data according to the switching signal of the comparison circuit and outputs the data to the time switching switch. It is provided.
  • the comparison circuit may have a hysteresis characteristic.
  • the comparison circuit can compare the zero vector time with a time proportional to the dead time compensation set value.
  • a three-phase PWM pattern is calculated from a voltage command and an output voltage phase of the current control unit, and the zero vector calculated in this calculation step is calculated.
  • the time data for 3-arm modulation is created from the voltage vector time including the torque time, and the time data is converted by using a time switching switch for switching the time of each phase.
  • the time data of the 2-arm modulation method is created, and the 0-vector time is compared with the dead-time compensation set value.When the 0-vector time becomes shorter, a 3-arm nom 2-arm modulation switching signal is output. Using the modulation switching switch to switch between the arm modulation time data and the two-arm modulation time data according to the switching signal output by the comparison and to output the time data to the provided time switching switch.
  • FIG. 1 is a block diagram of a block diagram of a variable speed drive disclosed in Japanese Patent Application No. 2-7983.
  • FIG. 2 is a functional block diagram of a PWM pattern generator according to an embodiment of the present invention.
  • FIG. 3 is an explanatory diagram of a zero vector arrangement of the embodiment in the PWM pattern generator shown in FIG.
  • FIG. 4 is a diagram for explaining a locus of a current vector of the embodiment in the PWM pattern generator shown in FIG.
  • FIG. 5 is a functional block diagram showing a conventional PWM pattern generator related to FIG.
  • FIG. 6 is a diagram illustrating time data and time data in three-arm modulation.
  • FIG. 7 is a diagram illustrating the movement of the zero vector.
  • FIG. 8 is an explanatory diagram of a current vector locus at the time of zero vector movement.
  • FIG. 2 shows a PWM pattern generator according to an embodiment of the present invention. Note that the same components as those shown in FIG. 5 are denoted by the same reference numerals, and redundant description thereof will be omitted.
  • reference numeral 32 denotes a three-arm modulation time data generation unit
  • reference numeral 41 denotes a two-arm modulation time data generation unit including codes 42 and 43
  • reference numeral 42 denotes a PWM pattern calculation unit 31.
  • the voltage vector time ⁇ ⁇ , ⁇ and the 0 vector time To are input, and the 0 vector time ⁇ 0 is concentrated behind the time ⁇ , ⁇ ⁇ , and the time data ⁇ !, ⁇ 2 , ⁇ 3 are output
  • the time data generator that generates the time data 3 ⁇ , ⁇ ⁇ , To is also input to the code 43, and the 0 vector time T 0 is concentrated before the time ⁇ ⁇ , Tju to output the time data Th ⁇ 2 , ⁇ 3
  • This section shows the time data generator.
  • Reference numeral 45 denotes a value K ⁇ Tdly obtained by multiplying the zero vector period To of the PWM pattern calculation unit 31 and the dead time compensation set value Tdly by the coefficient K in the ratio circuit 44, and TQ ⁇ K ⁇ Tdly Shows a comparison circuit consisting of a hysteresis type comparator that outputs a 3-arm Z 2-arm modulation switching signal.
  • reference numeral 46 denotes the output of the 3-arm Z-arm modulation switching signal circuit 45 and 60.
  • the switch selection table which receives the output of the roll circuit 39 and outputs the 3-arm 2-arm modulation switching data.
  • reference numeral 4 7 shows the modulation switching switch which is controlled by the data switch selection table 4 6, 3 when arm modulation time data generating unit 3 and second time data T !, T 2, T 3 as it is T! ', T 2', and output as ⁇ 3 ', 0 ⁇ / ⁇ FF switching circuit 3 4 forces, in La 3-arm modulation method PWM pattern Output.
  • the time data TT 2 , ⁇ 3 of the time data generators 4 2, 4 3 are divided into two equal parts of the zero vector time To of the conventional PWM half-week period as shown in Fig. 3 to obtain the voltage.
  • the vector time Ts and the one allocated to both sides of T are changed. That is,
  • the current sampling may be performed every PWM half-week as usual, and the center of gravity of one cycle of the current locus shown in FIG. 4 is sampled. Therefore, the ACR control system shown in Fig. 1 (Japanese Patent Application No. 2-79983) can be applied as it is. Industrial applicability
  • the three-arm modulation method is used.
  • the comparison circuit compares the zero vector time from the PWM pattern calculation unit with the dead time compensation set value, and switches the switching signal before the zero vector is generated. Is output to the modulation switching switch.
  • the modulation switch switches the time data in the 3-arm modulation to the time data of the 2-arm modulation, outputs the data to the time switching switch, and switches the current control to the 2-arm modulation PWM pattern.
  • the 2-arm modulation method has a lower current ripple than the 3-arm modulation method.
  • the comparison circuit since the comparison circuit has a so-called hysteresis, it is not necessary to frequently switch between the three-arm modulation and the two-arm modulation near the voltage saturation. Furthermore, if the time to be compared with the zero vector time in the comparison circuit is a value obtained by multiplying the dead time compensation value by the ratio, the switching ratio between the three-arm modulation and the two-arm modulation for the voltage command can be changed by changing the ratio. Can be adjusted.
  • the present invention has various excellent industrial applicability.

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

Abstract

Inverseur PWM (à modulation par impulsions variables) à mode trivectoriel de modulation. Ledit appareil et son procédé associé assurent une régulation du courant sans élimination du vecteur zéro, en passant en mode bivectoriel de modulation lorsqu'on approche de la saturation de tension. L'inverseur PWM à mode trivectoriel de modulation comprend: un générateur (32) produisant les rythmes (32) destinés à la modulation trivectorielle, en fonction des durées des vecteurs de tension Tμ, Tν et T0 élaborées par une unité (31) travaillant selon le schéma PWM; un commutateur de rythme (33) qui commute les signaux de rythme à chaque nouvelle phase; et un générateur (41) produisant les rythmes destinés à la modulation bivectorielle en fonction de la durée des vecteurs de tension. Le vecteur de temps zéro T0 est comparé avec la valeur K.Tdly de compensation de temps mort, établie par un circuit de comparaison (45) à hystérésis. Ainsi, lorsque la durée du vecteur zéro s'amenuise, les rythmes produits par le générateur (41) sont transmis au commutateur (33) de rythmes par l'intermédiaire d'un commutateur de mode de modulation (47), afin que le schéma PWM puisse s'adapter au mode bivectoriel de modulation.
PCT/JP1993/000986 1992-01-17 1993-07-16 Appareil et procede de regulation du courant d'un entrainement a vitesse variable WO1995002921A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP4006152A JPH05199796A (ja) 1992-01-17 1992-01-17 可変速駆動装置の電流制御方式
KR1019940700309A KR950702074A (ko) 1993-07-16 1993-07-16 가변속 구동기의 전류 제어를 실시하는 장치 및 그실시 방법(Apparatus for Carrying out Control for Variable speed Driver and Method for Carring Curent Control therefor)
KR1019940700309A KR0125326B1 (ko) 1993-07-16 1993-07-16 가변속 구동기의 전류 제어를 실시하는 장치 및 그 실시 방법
PCT/JP1993/000986 WO1995002921A1 (fr) 1992-01-17 1993-07-16 Appareil et procede de regulation du courant d'un entrainement a vitesse variable
US08/193,052 US5623192A (en) 1992-01-17 1993-07-16 Apparatus for carrying out current control for variable speed driver and method for carrying out current control therefor
CA002142618A CA2142618C (fr) 1992-01-17 1993-07-16 Dispositif de reglage du courant dans un mecanisme a vitesse variable; la methode correspondante
EP93916172A EP0661796B1 (fr) 1992-01-17 1993-07-16 Appareil et procede de regulation du courant d'un entrainement a vitesse variable
CN93116762A CN1038010C (zh) 1992-01-17 1993-07-16 实施可变速驱动机电流控制的装置及其实施方法
DE69322400T DE69322400T2 (de) 1993-07-16 1993-07-16 Vorrichtung und verfahren zum regeln des stromes eines antriebs mit variabler drehzahl

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP4006152A JPH05199796A (ja) 1992-01-17 1992-01-17 可変速駆動装置の電流制御方式
PCT/JP1993/000986 WO1995002921A1 (fr) 1992-01-17 1993-07-16 Appareil et procede de regulation du courant d'un entrainement a vitesse variable
CA002142618A CA2142618C (fr) 1992-01-17 1993-07-16 Dispositif de reglage du courant dans un mecanisme a vitesse variable; la methode correspondante
CN93116762A CN1038010C (zh) 1992-01-17 1993-07-16 实施可变速驱动机电流控制的装置及其实施方法

Publications (1)

Publication Number Publication Date
WO1995002921A1 true WO1995002921A1 (fr) 1995-01-26

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Application Number Title Priority Date Filing Date
PCT/JP1993/000986 WO1995002921A1 (fr) 1992-01-17 1993-07-16 Appareil et procede de regulation du courant d'un entrainement a vitesse variable

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CN (1) CN1038010C (fr)
CA (1) CA2142618C (fr)
WO (1) WO1995002921A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010119929A1 (fr) * 2009-04-16 2010-10-21 株式会社明電舎 Procédé de commande d'un appareil de conversion de puissance
CN114221589B (zh) * 2021-12-08 2023-09-29 北方工业大学 一种脉冲注入的多模式调制切换方法及装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02206398A (ja) * 1989-02-04 1990-08-16 Toyo Electric Mfg Co Ltd インバータ制御方式
JPH03118793A (ja) * 1989-09-29 1991-05-21 Isao Takahashi インバータ制御装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344545B1 (fr) * 1988-05-31 1995-03-29 Yamaha Corporation Circuit de compensation de température dans amplificateur d'impédance négative
US5204607A (en) * 1989-09-07 1993-04-20 Siemens Aktiengesellschaft Process for correcting the reference flux of a converter-powered multi-phase machine and circuit for implementing the process
US5184057A (en) * 1989-09-14 1993-02-02 Hitachi, Ltd. Control method and device for ac motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02206398A (ja) * 1989-02-04 1990-08-16 Toyo Electric Mfg Co Ltd インバータ制御方式
JPH03118793A (ja) * 1989-09-29 1991-05-21 Isao Takahashi インバータ制御装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0661796A4 *

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Publication number Publication date
CA2142618A1 (fr) 1995-01-26
CA2142618C (fr) 1998-10-27
CN1097529A (zh) 1995-01-18
CN1038010C (zh) 1998-04-08

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