WO2002058225A8 - Method and an apparatus for the control of an electric motor and the use hereof - Google Patents
Method and an apparatus for the control of an electric motor and the use hereofInfo
- Publication number
- WO2002058225A8 WO2002058225A8 PCT/DK2002/000002 DK0200002W WO02058225A8 WO 2002058225 A8 WO2002058225 A8 WO 2002058225A8 DK 0200002 W DK0200002 W DK 0200002W WO 02058225 A8 WO02058225 A8 WO 02058225A8
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- fed
- voltage
- controlled
- control
- Prior art date
Links
Classifications
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
Abstract
The invention relates to a method and an apparatus for the control of a synchronous motor with a permanent magnet or optionally for the control of an asynchronous motor, in particular an asynchronous motor with a shortcircuit rotor. The motor is fed with voltage pulses, where the speed of the motor is controlled by controlling the frequency of the voltage pulses fed, and where the power fed to the motor is controlled in dependence on the speed. The voltage level of the individual voltage pulses is kept constant, while the power fed is controlled by varying the pulse duration, said pulse duration being determined as a function of the frequency, e.g. at a characteristic, a single voltage pulse being fed to the motor during each half-period, said pulse duration being changed by changing the width of this voltage pulse. It is ensured hereby that the number of revolutions of an electric motor may be controlled in a simple manner, thereby obviating the need for having an inverter with voltage control, and obviating the need for performing measurements of motor current and number of revolutions like in the prior art. The invention may particularly be used for operating a liquid pump, e.g. a pump for pumping water in an aquarium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA200100012 | 2001-01-04 | ||
| DKPA200100012 | 2001-01-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2002058225A1 WO2002058225A1 (en) | 2002-07-25 |
| WO2002058225A8 true WO2002058225A8 (en) | 2004-05-06 |
Family
ID=8159956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DK2002/000002 WO2002058225A1 (en) | 2001-01-04 | 2002-01-03 | Method and an apparatus for the control of an electric motor and the use hereof |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2002058225A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0400829D0 (en) * | 2004-01-15 | 2004-02-18 | Pektron Group Ltd | Motor control |
| TR200700213T1 (en) * | 2004-07-21 | 2007-04-24 | Ar�El�K Anon�M ��Rket� | A dishwasher with pulse width modulation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3000058A1 (en) * | 1980-01-03 | 1981-07-09 | Richard 6909 Walldorf Fischer | Automatic interval controller for aquarium pump - has timers coupled via controller to pump rotation regulators |
| US4361791A (en) * | 1981-05-12 | 1982-11-30 | General Electric Company | Apparatus for controlling a PWM inverter-permanent magnet synchronous motor drive |
| JPH0667257B2 (en) * | 1984-04-16 | 1994-08-24 | ファナック株式会社 | Synchronous motor control method |
| EP0691732B1 (en) * | 1994-07-06 | 1997-03-12 | Siemens Aktiengesellschaft | Method for operating an inverter feeding a single-phase synchronous motor with permanently excited rotor |
-
2002
- 2002-01-03 WO PCT/DK2002/000002 patent/WO2002058225A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002058225A1 (en) | 2002-07-25 |
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