JPH0268698U - - Google Patents
Info
- Publication number
- JPH0268698U JPH0268698U JP1988148374U JP14837488U JPH0268698U JP H0268698 U JPH0268698 U JP H0268698U JP 1988148374 U JP1988148374 U JP 1988148374U JP 14837488 U JP14837488 U JP 14837488U JP H0268698 U JPH0268698 U JP H0268698U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic flux
- voltage
- electric motor
- current component
- induced voltage
- 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.)
- Granted
Links
- 230000004907 flux Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 2
Landscapes
- Control Of Ac Motors In General (AREA)
Description
第１図はこの考案の一実施例の構成を示すブロ
ツク図、第２図は同実施例の主要部の詳細な構成
を示すブロツク図、第３図は同実施例の主要な要
素の動作を説明するためのフローチヤート、第４
図は同実施例の動作を説明するために電動機の磁
束と励磁電流との関係を示す線図、第５図は同実
施例の動作を説明するために電動機の速度と電圧
との関係を示す線図、第６図は従来の電力変換装
置の構成を示すブロツク図、第７図は同装置の動
作を説明するために、電動機の磁束と励磁電流と
の関係を示す線図である。
１……速度制御部、２……除算器、３……磁束
演算部、４……ベクトル制御部、４ａ……磁束飽
和関数発生器、４ｂ……微分器、５……電流制御
部、６……電圧ベクトル演算部、７……３相電圧
演算部、８ａ，８ｂ，８ｃ……トランス、９ａ，
９ｂ，９ｃ……変換器、１０……積分器、１１…
…３相２相変換器、１２……速度検出器、１３…
…電動機、２０……出力電圧検出部、２１……誘
起電圧演算部、２３……スイツチ、２４……磁束
飽和特性調整部。
Fig. 1 is a block diagram showing the configuration of an embodiment of this invention, Fig. 2 is a block diagram showing the detailed structure of the main parts of the embodiment, and Fig. 3 shows the operation of the main elements of the embodiment. Flowchart for explaining, 4th
The figure is a diagram showing the relationship between the magnetic flux of the motor and the excitation current to explain the operation of the same embodiment, and Figure 5 shows the relationship between the speed of the motor and the voltage to explain the operation of the same embodiment. FIG. 6 is a block diagram showing the configuration of a conventional power conversion device, and FIG. 7 is a diagram showing the relationship between the magnetic flux of the motor and the excitation current to explain the operation of the device. 1... Speed control section, 2... Divider, 3... Magnetic flux calculation section, 4... Vector control section, 4a... Magnetic flux saturation function generator, 4b... Differentiator, 5... Current control section, 6 ... Voltage vector calculation section, 7 ... Three-phase voltage calculation section, 8a, 8b, 8c ... Transformer, 9a,
9b, 9c...Converter, 10...Integrator, 11...
...Three-phase two-phase converter, 12...Speed detector, 13...
...Electric motor, 20...Output voltage detection section, 21...Induced voltage calculation section, 23...Switch, 24...Magnetic flux saturation characteristic adjustment section.
Claims (1)
る電力変換器を有し、前記電動機の速度検出信号
と速度基準とに基づいて該電動機のトルク基準お
よび磁束基準を演算し、且、前記トルク基準に対
応するトルク電流成分を求めると共に、前記電動
機の磁束飽和特性に従つて入出力する関数発生器
を用いて前記磁束基準に対応する磁束電流成分を
求め、この磁束電流成分および前記トルク電流成
分に基づいて前記電力変換器を制御する電力変換
装置において、前記電力変換器の出力電圧を検出
する電圧検出手段と、前記速度検出信号および磁
束基準を用いて前記電動機の誘起電圧を演算する
誘起電圧演算手段と、この誘起電圧演算手段の誘
起電圧と前記電圧検出手段の検出電圧とを比較し
、偏差分が零になるように前記関数発生器の磁束
飽和特性を調整する磁束飽和特性調整手段とを備
えたことを特徴とする電力変換装置。 It has a power converter that supplies alternating current of variable voltage and variable frequency to an electric motor, and calculates a torque reference and a magnetic flux reference of the electric motor based on a speed detection signal and a speed reference of the electric motor, and A corresponding torque current component is determined, and a magnetic flux current component corresponding to the magnetic flux reference is determined using a function generator that inputs and outputs according to the magnetic flux saturation characteristic of the motor, and based on this magnetic flux current component and the torque current component. A power conversion device that controls the power converter by using a voltage detection means for detecting an output voltage of the power converter, and an induced voltage calculation means for calculating an induced voltage of the electric motor using the speed detection signal and a magnetic flux reference. and magnetic flux saturation characteristic adjusting means for comparing the induced voltage of the induced voltage calculation means and the detected voltage of the voltage detecting means and adjusting the magnetic flux saturation characteristic of the function generator so that the deviation becomes zero. A power conversion device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988148374U JPH0715360Y2 (en) | 1988-11-14 | 1988-11-14 | Power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988148374U JPH0715360Y2 (en) | 1988-11-14 | 1988-11-14 | Power converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0268698U true JPH0268698U (en) | 1990-05-24 |
| JPH0715360Y2 JPH0715360Y2 (en) | 1995-04-10 |
Family
ID=31419638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988148374U Expired - Lifetime JPH0715360Y2 (en) | 1988-11-14 | 1988-11-14 | Power converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0715360Y2 (en) |
-
1988
- 1988-11-14 JP JP1988148374U patent/JPH0715360Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0715360Y2 (en) | 1995-04-10 |
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