MY105546A - Electric motor controls and laundry machines using such motor controls - Google Patents
Electric motor controls and laundry machines using such motor controlsInfo
- Publication number
- MY105546A MY105546A MYPI92000302A MYPI19920302A MY105546A MY 105546 A MY105546 A MY 105546A MY PI92000302 A MYPI92000302 A MY PI92000302A MY PI19920302 A MYPI19920302 A MY PI19920302A MY 105546 A MY105546 A MY 105546A
- Authority
- MY
- Malaysia
- Prior art keywords
- reversing
- condition
- motor controls
- motor
- reversal
- Prior art date
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A CONTROL APPARATUS AND METHOD FOR AN ELECTRIC MOTOR HAVING SENSING DEVICES WHICH SENSE THE FREQUENCY AND POLARITY OF EMFS IN THE ROTOR WINDINGS DOWN TO A CONDITION WHERE THE ROTOR IS IN CONDITION FOR REVERSING, AND CAUSING REVERSING OF THE MOTOR WHEN THE FREQUENCY IS SUCH AS TO ALLOW REVERSING AND THE POLARITS OF A SELECTED WINDING IS AT OR NEAR A ZERO CROSSING BETWEEN POSITIVE AND NEGATIVE POLARITIES. CYCLICAL REVERSAL IS EFFECTED BY MEASURING THE TIME THE ROTOR TAKES TO COAST FROM A "POWER OFF" CONDITION TO THE CONDITION FOR REVERSING AND WITH AN ELECTRONICALLY COMMUTATED MOTOR REVERSING CAN USUALLY BE EFFECTED IN ONE COMMUTATION PERIOD. THE MOTOR IS USED IN A CLOTHES WASHING MACHINE OR SIMILAR APPLICATION WHERE RAPID REVERSAL IS REQUIRED OR TIMING OF THE TIME FROM ONE REVERSAL TO THE NEXT IS REQUIRED TO BE CONSTANT. (FIG. 1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ213490A NZ213490A (en) | 1985-09-16 | 1985-09-16 | Cyclic motor reversal by forced commutation |
Publications (1)
Publication Number | Publication Date |
---|---|
MY105546A true MY105546A (en) | 1994-10-31 |
Family
ID=79601435
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI92000302A MY105546A (en) | 1985-09-16 | 1987-05-11 | Electric motor controls and laundry machines using such motor controls |
MYPI87000633A MY102857A (en) | 1985-09-16 | 1987-05-11 | Improvements in or relating to electronic motor controls, laundry machines including such controls and/or methods of operating such controls. |
MYPI92000299A MY105547A (en) | 1985-09-16 | 1987-05-11 | Electric motor controls and laundry machines using such motor controls |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI87000633A MY102857A (en) | 1985-09-16 | 1987-05-11 | Improvements in or relating to electronic motor controls, laundry machines including such controls and/or methods of operating such controls. |
MYPI92000299A MY105547A (en) | 1985-09-16 | 1987-05-11 | Electric motor controls and laundry machines using such motor controls |
Country Status (1)
Country | Link |
---|---|
MY (3) | MY105546A (en) |
-
1987
- 1987-05-11 MY MYPI92000302A patent/MY105546A/en unknown
- 1987-05-11 MY MYPI87000633A patent/MY102857A/en unknown
- 1987-05-11 MY MYPI92000299A patent/MY105547A/en unknown
Also Published As
Publication number | Publication date |
---|---|
MY102857A (en) | 1993-03-31 |
MY105547A (en) | 1994-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ITPD920107A1 (en) | ELECTRONIC DEVICE FOR STARTING A SYNCHRONOUS MOTOR WITH PERMANENT MAGNET ROTOR | |
KR900004091A (en) | DC current sensing method and apparatus of any one pole in the conductor, and electronic commutating motor controller responsive to the sensing motor current | |
JPS6430500A (en) | Brushless starting generator exciter | |
KR830008455A (en) | Induction Motor Driving Method | |
US4780652A (en) | Circuit for controlling a brushless electric motor | |
JPS5785600A (en) | Bidirectional rotating pulse motor drive circuit | |
JPS5378011A (en) | Electric valve feeding motor apparatus commutated by internal electromotive force | |
JPS5291115A (en) | Control apparatus for synchronous machine | |
DE3379707D1 (en) | Reversing device for a two-pole single-phase synchronous motor | |
ATE148600T1 (en) | DEVICE FOR DRIVING A SINGLE-PHASE SYNCHRONOUS MOTOR, IN PARTICULAR FOR DRIVING A PUMP DRIVE IN A HOUSEHOLD APPLIANCE | |
GB1404901A (en) | Variable frequency electrical motor control system | |
MY105546A (en) | Electric motor controls and laundry machines using such motor controls | |
EP0054255A3 (en) | Similified connections to control speed relating to electrical rotating machinery | |
EP0311031A3 (en) | A method and an electric circuit for controlling an ac-motor, and a circulation pump driven by a motor controlled in this manner | |
DE59404810D1 (en) | Permanent magnet DC motor | |
ES8300902A1 (en) | Washing machine drive system | |
SU1697245A1 (en) | Electric drive | |
FR2450095A1 (en) | Dishwasher drive motor control circuit - has switches in supply windings to reverse motor during washing cycle | |
JPS52104716A (en) | Driving method of a.c. induction motor | |
JPS5592558A (en) | Dc motor | |
JPS5728595A (en) | Revolution number controlling system for direct current motor | |
JPS51139047A (en) | Alternating current elevator | |
JPS5553188A (en) | Power supply for driving ac motor | |
JPS5658789A (en) | Controlling device of commutatorless motor | |
ATE139873T1 (en) | CONTROL OF AN ELECTRIC MOTOR WITH STATOR WINDING, ESPECIALLY FOR HOUSEHOLD APPLIANCES |