FIELD: electrical engineering; commutation improvement for ripple-current commutator machines.
SUBSTANCE: proposed ripple-current motor incorporating commutation improvement device is supplied with power from uncontrolled single-phase full-wave rectifier. Main-pole field winding is series-connected to armature circuit and commutating-pole winding, to DC amplifier. The latter is controlled by signal proportional to armature current supplied from metering shunt through scaling amplifier to low- and high-pass filters. Low-pass filter separates DC component from signal and high-pass filter separates AC component therefrom. AC component is supplied to phase controller providing phase control in the range of 0 to π. Signal DC component is summed up across amplifier with AC component corrected in phase. Summing amplifier has independent gain controls for channels of both components; control signal is generated at its output and corrected in piecewise-linear approximation unit including saturation of commutating-pole magnetic circuit; then this signal arrives at DC amplifier feeding commutating-pole winding.
EFFECT: enhanced commutating power of machine for various operating and brush-contact conditions.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR SHAPING COMMUTATING FIELD OF COMMUTATOR MACHINE | 2003 |
|
RU2251780C2 |
| 0 |
|
SU458926A1 | |
| DEVICE FOR IMPROVING COMMUTATION OF COMMUTATOR D.C.ELECTRIC MACHINES | 0 |
|
SU1239790A1 |
| 0 |
|
SU143901A1 | |
| DEVICE FOR IMPROVING COMMUTATION OF COMMUTATOR ELECTRIC MACHINE WITH WAVY WINDING OF ARMATURE | 0 |
|
SU1112495A1 |
| DEVICE FOR IMPROVING COMMUTATION OF DC COMMUTATOR MACHINES | 1999 |
|
RU2172547C1 |
| DEVICE FOR IMPROVING COMMUTATION OF COMMUTATOR D.C. ELECTRIC MACHINE | 0 |
|
SU1125709A1 |
| 0 |
|
SU488295A1 | |
| DIRECT CURRENT MACHINE | 0 |
|
SU564691A1 |
| COMMUTATION IMPROVING DEVICE FOR AC COMMUTATOR MACHINES | 2000 |
|
RU2194354C2 |
