JPH0683589B2 - Controller for non-commutator motor - Google Patents

Controller for non-commutator motor

Info

Publication number
JPH0683589B2
JPH0683589B2 JP61044544A JP4454486A JPH0683589B2 JP H0683589 B2 JPH0683589 B2 JP H0683589B2 JP 61044544 A JP61044544 A JP 61044544A JP 4454486 A JP4454486 A JP 4454486A JP H0683589 B2 JPH0683589 B2 JP H0683589B2
Authority
JP
Japan
Prior art keywords
duty
voltage
motor
commutator motor
time
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.)
Expired - Fee Related
Application number
JP61044544A
Other languages
Japanese (ja)
Other versions
JPS62203591A (en
Inventor
信弘 川嶋
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP61044544A priority Critical patent/JPH0683589B2/en
Publication of JPS62203591A publication Critical patent/JPS62203591A/en
Publication of JPH0683589B2 publication Critical patent/JPH0683589B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Description

【発明の詳細な説明】 <技術分野> 本発明はロータに永久磁石を用いた無整流子電動機の制
御装置に関するものである。
Description: TECHNICAL FIELD The present invention relates to a control device for a non-commutator motor that uses a permanent magnet for a rotor.

<従来技術> 第4図に示すように、永久磁石ロータを用いた従来の無
整流子電動機M1では交流電源1をコンバータ2にて平滑
した直流電圧をインバータ回路3にてスイツチングを行
ない、モータ巻線に交流電圧を印加し運転を行なつてい
た。そして、永久磁石ロータ4を位置検出センサー6で
検出し、その信号は制御回路7に入力し、目標回転数に
近づけるべくチヨツピングデユーテイを可変し、インバ
ータ回路3にスイツチング信号を送つていた。
<Prior Art> As shown in FIG. 4, in a conventional non-commutator motor M1 using a permanent magnet rotor, a DC voltage obtained by smoothing an AC power supply 1 by a converter 2 is switched by an inverter circuit 3 and a motor winding is performed. An AC voltage was applied to the line to operate it. Then, the permanent magnet rotor 4 is detected by the position detection sensor 6, the signal is input to the control circuit 7, the chopping duty is changed so as to approach the target rotation speed, and a switching signal is sent to the inverter circuit 3. Was there.

通常、位置検出センサー6としてはホール素子が用いら
れるが、ホール素子の特性のバラツキや引き出し線の本
数が多いという欠点があつた。
Normally, a hall element is used as the position detection sensor 6, but there are drawbacks such as variations in characteristics of the hall element and a large number of lead lines.

そこで、位置検出センサー6を用いずに、モータ巻線に
誘起される逆起電力を利用し、永久磁石ロータの位置を
検出することにより自己転流を行ない無整流子電動機を
回転させることができる。しかし、この逆起電力を利用
したセンサーレス方式では、無整流子電動機が停止中に
逆起電力は発生していないので、起動時は同期転流方式
で起動しなければならない。
Therefore, it is possible to rotate the non-commutator motor by performing self-commutation by detecting the position of the permanent magnet rotor by using the counter electromotive force induced in the motor winding without using the position detection sensor 6. . However, in the sensorless method using the counter electromotive force, the counter electromotive force is not generated while the non-commutator motor is stopped, and therefore the synchronous commutation method must be used for starting.

この同期転流方式とは、起動時は低周波数の駆動パター
ンで無整流子電動機を同期モータとして回転させ、この
駆動信号パターンを徐々に高周波数に上げていくと、モ
ータ巻線の逆起電力も大きくなる。そして、位置検出の
信号が十分に追従したところで自己転流に切り換える。
また、この同期転流時にはチヨツピングデユーテイも時
間に比例し徐々に上げていくがそのカーブが負荷とマツ
チングしていないと、自己転流に切換わる際に負荷に対
しトルク不足から脱調を起こしたり、逆にトルク過大か
ら位置検出センサーの入力信号と制御回路7からのドラ
イブ出力信号が発振し脱調を起こすことがある。これは
モータ巻線に印加される電圧実効値はチヨツピングパル
スのデユーテイと、またパルスのピーク値と比例関係に
あるためである。そしてこの同期転流はチヨツピングデ
ユーテイが数%から20%前後までが一般的であり、この
チヨツピングデユーテイの小さい範囲ではパルスのピー
ク値の影響が大きくなる。
In this synchronous commutation method, the non-commutator motor is rotated as a synchronous motor with a low-frequency drive pattern at startup, and this drive signal pattern is gradually raised to a high frequency, causing a back electromotive force of the motor winding. Also grows. Then, when the position detection signal sufficiently follows, the commutation is switched to.
Also, during this synchronous commutation, the chopping duty is also gradually increased in proportion to the time, but unless the curve is matched with the load, the torque shortage against the load is removed when switching to self-commutation. In some cases, the input signal of the position detection sensor and the drive output signal from the control circuit 7 may oscillate due to excessive torque, resulting in step-out. This is because the effective value of the voltage applied to the motor winding is proportional to the duty of the chopping pulse and the peak value of the pulse. The synchronous commutation is generally from several% to around 20% of the chopping duty, and the peak value of the pulse has a large effect in the range where the chopping duty is small.

ここでパルスのピーク値とは交流電源1をコンバータ2
にて平滑した直流電圧のことである。つまり、第5図の
起動からの時間Tを横軸に、モータ巻線に印加される電
圧実効値Vを縦軸とした線図に示すように、同期転流の
時間とチヨツピングデユーテイの関係は実線D2のカーブ
のようにバランスがとれているが、前記直流電圧が高け
れば破線D1のカーブのように、また低ければ破線D3のよ
うに脱調を起こしやすい領域(斜線部)に接近する。
Here, the peak value of the pulse means the AC power supply 1 and the converter 2
DC voltage smoothed by. That is, as shown in the diagram of FIG. 5 in which the time T from the start is on the horizontal axis and the effective voltage value V applied to the motor winding is on the vertical axis, the time of synchronous commutation and the chopping duty are shown. The tee relationship is balanced like the curve of the solid line D2, but if the DC voltage is high, it is like the curve of the broken line D1, and if it is low, it is the region where the step out is likely to occur (the shaded part). Approach.

<目的> 本発明は、上記した点に鑑み、同期転流時に交流電源を
コンバータにて平滑した直流電圧の値に応じチヨツピン
グデユーテイの時間に対するカーブを変え、同期転流か
ら自己転流への切り換わり時に起こりやすい脱調をなく
し、無整流子電動機の安定した運転を可能にできる制御
装置の提供を目的とする。
<Purpose> In view of the above points, the present invention changes the curve with respect to the time of the chopping duty according to the value of the DC voltage obtained by smoothing the AC power supply by the converter at the time of synchronous commutation, and changes from the synchronous commutation to the self-commutation. An object of the present invention is to provide a control device capable of eliminating a step-out that tends to occur when switching to a flow and enabling stable operation of a non-commutator motor.

<実施例> 以下、本発明の一実施例を第1図に基づき説明すると、
本発明は、交流電源8をコンバータ9にて平滑した直流
電圧を、六個のトランジスタを三相ブリツジ接続したイ
ンバータ回路10にてスイツチングを行ない、中性点非接
地Y結線されたモータ巻線に交流電圧を印加し、その電
圧はデユーテイ可変でチヨツピングして、無整流子電動
機のロータ回転数を制御する制御回路14を有する制御装
置において、モータ巻線の端子間電圧に基づいて無整流
子電動機の永久磁石ロータ11の位置を検出する位置検出
回路13を設け、その位置検出した出力信号に基づいて無
整流子電動機の自己転流を行なう機能と、起動時に同期
転流カーブA,B,C(同期転流の時間に対するチヨツピン
グのデユーテイ可変カーブ)のうちから前記交流電源8
をコンバータ9にて平滑した直流電圧の値によつて適し
たカーブを選びこのカーブに従つてチヨツピングデユー
テイを変える機能とを前記制御回路14に有せしめられた
ものである。
<Example> Hereinafter, an example of the present invention will be described with reference to FIG.
According to the present invention, the DC voltage obtained by smoothing the AC power supply 8 by the converter 9 is switched by the inverter circuit 10 in which six transistors are connected in three-phase bridge, and the neutral point non-grounded Y-connected motor winding is connected. In a control device having a control circuit 14 for applying an AC voltage, varying the duty and checking the rotor speed of the rotor of the non-rectifier motor, the non-rectifier motor is controlled based on the voltage across the terminals of the motor winding. Is provided with a position detection circuit 13 for detecting the position of the permanent magnet rotor 11, and the function of performing self-commutation of the non-commutator motor based on the output signal detected by the position, and the synchronous commutation curves A, B, C at start-up. The AC power supply 8 from among (the duty variable curve of the chopping with respect to the time of synchronous commutation)
The control circuit 14 is provided with a function of selecting a suitable curve according to the value of the DC voltage smoothed by the converter 9 and changing the checking duty according to this curve.

次に作用を説明すると、交流電源8をコンバータ9にて
平滑した直流電圧をインバータ回路10にてスイツチング
を行ない、モータ巻線に交流電圧を印加し、電動機M2を
運転する。このとき、永久磁石ロータ11の位置検出はモ
ータ巻線の端子間電圧を位置検出回路13に入力して位置
検出を行ない、制御回路14に入力する。そして制御回路
14では目標回転数に近づけるべくチヨツピングデユーテ
イを可変し、インバータ回路10にスイツチング信号を送
る。ここで起動時の同期転流では、第2図(b)の図の
起動からの時間Tを横軸に、モータ巻線に印加される電
圧実効値Vを縦軸とした線図の如く、複数のチヨツピン
グデユーテイのカーブA,B,Cを用意し、第3図の制御回
路14のフローチヤートの如く、直流電圧の値に応じ、そ
れに適したカーブAまたはBまたはCを選び、時間T1の
経過を待ち、自己転流へ切換える。そして、その時の脱
調を防ぐ。つまり、直流電圧が高いときはチヨツピング
デユーテイを少なく抑え、直流電圧が低いときはチヨツ
ピングデユーテイを多くとることにより、第2図
(a),(b)の比較から明らかな如く、脱調を起こし
やすい領域(斜線部)を大幅に少なくする。
Next, the operation will be described. A DC voltage obtained by smoothing the AC power source 8 by the converter 9 is switched by the inverter circuit 10, and the AC voltage is applied to the motor winding to operate the electric motor M2. At this time, the position of the permanent magnet rotor 11 is detected by inputting the terminal voltage of the motor winding to the position detecting circuit 13 to detect the position and inputting it to the control circuit 14. And control circuit
At 14, the chopping duty is varied so as to approach the target rotation speed, and a switching signal is sent to the inverter circuit 10. Here, in the synchronous commutation at the time of startup, as shown in the diagram of FIG. 2B, the time T from the startup is on the horizontal axis and the effective voltage value V applied to the motor winding is on the vertical axis. Prepare a plurality of curve A, B, C of the tuning duty, and select the curve A or B or C suitable for it according to the value of the DC voltage like the flow chart of the control circuit 14 in FIG. , Wait for the lapse of time T1 and switch to self-commutation. And prevent step-out at that time. That is, when the DC voltage is high, the chopping duty is suppressed to be small, and when the DC voltage is low, the chopping duty is increased, which is clear from the comparison between FIGS. 2 (a) and 2 (b). As described above, the area (shaded area) where out-of-step is likely to occur is greatly reduced.

なお、本発明は、上記実施例に限定されるものではな
く、本発明の範囲内で上記実施例に多くの修正および変
更を加え得ることは勿論である。
The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

<効果> 以上の説明から明らかな通り、本発明は、交流電源をコ
ンバータにて平滑した直流電圧をインバータ回路にてス
イツチングを行ない、モータ巻線に交流電圧を印加し、
その電圧はデユーテイ可変でチヨツピングして、無整流
子電動機のロータ回転数を制御する制御回路を有する制
御装置において、無整流子電動機のロータの位置を検出
する位置検出回路を設け、その位置検出した出力信号に
基づいて無整流子電動機の自己転流を行なう機能と、起
動時に前記交流電源をコンバータにて平滑した直流電圧
の値によつて同期転流の時間に対するチヨツピングデユ
ーテイのカーブを選択してこのカーブに従つてチヨツピ
ングデユーテイを変える機能とを前記制御回路に有せし
められたことを特徴とする無整流子電動機の制御装置に
関するものである。
<Effect> As is apparent from the above description, according to the present invention, a DC voltage obtained by smoothing an AC power supply by a converter is switched by an inverter circuit, and an AC voltage is applied to a motor winding.
The voltage is duty-variable and is checked, and in a control device that has a control circuit that controls the rotor rotation speed of the non-rectifier motor, a position detection circuit that detects the position of the rotor of the non-rectifier motor is provided and the position is detected. The function of performing self-commutation of the non-commutator motor based on the output signal and the curve of the chopping duty against the time of synchronous commutation by the value of the DC voltage obtained by smoothing the AC power supply by the converter at the time of startup. The present invention relates to a control device for a non-commutator motor, wherein the control circuit is provided with a function of changing the selecting duty according to the curve and changing the checking duty.

したがつて、本発明によると、ロータを用いた無整流子
電動機において、起動時の同期転流から自己転流への切
換わり時は、電源電圧あるいはそれを平滑した直流電圧
の変動にも脱調せず安定した運転が行なえる優れた効果
がある。
Therefore, according to the present invention, in a commutatorless motor using a rotor, when switching from synchronous commutation to self-commutation at start-up, the fluctuation of the power supply voltage or the smoothed DC voltage is also eliminated. There is an excellent effect that stable operation can be performed without adjusting.

【図面の簡単な説明】[Brief description of drawings]

第1図は本発明無整流子電動機の制御装置の一実施例を
示すブロツク図、第2図(a),(b)は起動からの時
間Tを横軸に、モータ巻線に印加される電圧実効値Vを
縦軸とした線図、第3図は同じく制御回路のフローチヤ
ート、第4図は従来例の制御装置のブロツク図、第5図
は同じく起動からの時間Tを横軸に、モータ巻線に印加
される電圧実効値Vを縦軸とした線図である。 A,B,C:同期転流カーブ、8:交流電源、9:コンバータ、1
0:インバータ回路、11:ロータ、13:位置検出回路、14:
制御回路。
FIG. 1 is a block diagram showing an embodiment of a controller for a non-rectifier motor according to the present invention, and FIGS. 2 (a) and 2 (b) are applied to the motor windings with the time T from the start as the horizontal axis. FIG. 3 is a flow chart of the control circuit, FIG. 4 is a block diagram of the control device of the conventional example, and FIG. 5 is the time T from the start in the horizontal axis. FIG. 5 is a diagram in which the effective voltage value V applied to the motor windings is plotted on the vertical axis. A, B, C: Synchronous commutation curve, 8: AC power supply, 9: Converter, 1
0: Inverter circuit, 11: Rotor, 13: Position detection circuit, 14:
Control circuit.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】交流電源をコンバータにて平滑した直流電
圧をインバータ回路にてスイツチングを行ない、モータ
巻線に交流電圧を印加し、その電圧はデユーテイ可変で
チヨツピングして、無整流子電動機のロータ回転数を制
御する制御回路を有する制御装置において、無整流子電
動機のロータの位置を検出する位置検出回路を設け、そ
の位置検出した出力信号に基づいて無整流子電動機の自
己転流を行なう機能と、起動時に前記交流電源をコンバ
ータにて平滑した直流電圧の値によつて同期転流の時間
に対するチヨツピングデユーテイのカーブを選択してこ
のカーブに従つてチヨツピングデユーテイを変える機能
とを前記制御回路に有せしめられたことを特徴とする無
整流子電動機の制御装置。
1. A rotor for a non-commutator motor, wherein a DC voltage obtained by smoothing an AC power source by a converter is switched by an inverter circuit, an AC voltage is applied to a motor winding, and the duty is variable so that the voltage is checked. In a control device having a control circuit for controlling the rotation speed, a position detection circuit for detecting the position of the rotor of the non-commutator motor is provided, and a function of performing self-commutation of the non-commutator motor based on the output signal detected by the position detection circuit. And, at the time of start-up, the curve of the duty of duty for the time of synchronous commutation is selected by the value of the DC voltage smoothed by the converter at the time of start-up, and the duty of duty is checked according to this curve. A control device for a non-commutator motor, characterized in that the control circuit is provided with a changing function.
JP61044544A 1986-02-28 1986-02-28 Controller for non-commutator motor Expired - Fee Related JPH0683589B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61044544A JPH0683589B2 (en) 1986-02-28 1986-02-28 Controller for non-commutator motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61044544A JPH0683589B2 (en) 1986-02-28 1986-02-28 Controller for non-commutator motor

Publications (2)

Publication Number Publication Date
JPS62203591A JPS62203591A (en) 1987-09-08
JPH0683589B2 true JPH0683589B2 (en) 1994-10-19

Family

ID=12694446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61044544A Expired - Fee Related JPH0683589B2 (en) 1986-02-28 1986-02-28 Controller for non-commutator motor

Country Status (1)

Country Link
JP (1) JPH0683589B2 (en)

Also Published As

Publication number Publication date
JPS62203591A (en) 1987-09-08

Similar Documents

Publication Publication Date Title
JP3440274B2 (en) Brushless DC motor control
KR100329077B1 (en) Driving apparatus of brushless motor for outdoor fan of airconditioner
JP3204644B2 (en) Driving device and driving method for electric motor
JP4167232B2 (en) Brushless DC motor control method
KR100289496B1 (en) sensorlee speed control method of high speed motor
JP4226224B2 (en) Inverter device
JP4531180B2 (en) Synchronous motor and method for starting synchronous motor
JPH08317684A (en) Control device of permanent magnet type motor and washing machine with it
CN112400274B (en) Method for controlling brushless permanent magnet motor
JP3283377B2 (en) DC motor synchronous starter
JPH0683589B2 (en) Controller for non-commutator motor
JP3332612B2 (en) Brushless motor drive
KR20210073596A (en) How to control brushless permanent magnet motor
JPH06141587A (en) Brushless motor driver
JP2002186274A (en) Brushless dc motor controller
JPH05219785A (en) Driving device for brushless motor
KR100858540B1 (en) Method for controlling BLDC motor for inverter airconditioner
KR19990075671A (en) Control method of open loop section
JP2017229113A (en) Brushless motor control device and control method
KR100250108B1 (en) Conduction angle control apparatus of an interior permanent magnet bldc motor
JP2777615B2 (en) Control device for synchronous motor
JP3389300B2 (en) Operating method of brushless motor
JP2001211684A (en) Brushless motor controller and compressor
JPH05227787A (en) Driver for brushless motor
JPS60237881A (en) Controlling method of motor

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees