GB1167320A - An Arrangement for Controlling the Speed of an Electric Induction Motor. - Google Patents
An Arrangement for Controlling the Speed of an Electric Induction Motor.Info
- Publication number
- GB1167320A GB1167320A GB5835566A GB5835566A GB1167320A GB 1167320 A GB1167320 A GB 1167320A GB 5835566 A GB5835566 A GB 5835566A GB 5835566 A GB5835566 A GB 5835566A GB 1167320 A GB1167320 A GB 1167320A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator
- stator
- controlled
- motor
- gto2
- 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
Links
- 230000006698 induction Effects 0.000 title abstract 2
- 101100449818 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ECM4 gene Proteins 0.000 abstract 2
- 101100449816 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GTO1 gene Proteins 0.000 abstract 2
- 101100449817 Schizosaccharomyces pombe (strain 972 / ATCC 24843) gto2 gene Proteins 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 abstract 1
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
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
1,167,320. Control of A.C. motors; inverting. STANDARD TELEPHONES & CABLES Ltd. 30 Dec., 1966, No. 58355/66. Headings H2F and H2J. [Also in Division H3] The speed of an induction motor is controlled by energizing its stator via two gate turn-off devices GTO1, GTO2 controlled by a generator of square waves whose pulse width is modulated sinusoidally by a frequency-controlled oscillator so that the net stator flux A also varies sinusoidally. As shown, the motor has bifilar stator windings X, Y which are energized alternately but a standard motor may be used, its stator being connected to the secondary of a transformer whose primary has the windings X and Y. The pulse generator comprises a free-running multivibrator circuit (Fig. 3, not shown) and the oscillator is a Wein bridge oscillator (Fig. 2, not shown) whose output is amplified by bi-stable switching circuits (Fig. 4, not shown). The switching devices GTO1, GTO2 are protected by ensuring good coupling between X and Y, so that stored energy is transferred at change over, diodes D5, D6 completing the circuit. If triggering pulses are short R25, D3 and R26, D4 provide "hold-on" current. For polyphase motors a single oscillator would modulate the required number of channels. The supply may be either smooth D.C. or unsmoothed full-wave rectified A.C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5835566A GB1167320A (en) | 1966-12-30 | 1966-12-30 | An Arrangement for Controlling the Speed of an Electric Induction Motor. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5835566A GB1167320A (en) | 1966-12-30 | 1966-12-30 | An Arrangement for Controlling the Speed of an Electric Induction Motor. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1167320A true GB1167320A (en) | 1969-10-15 |
Family
ID=10481402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5835566A Expired GB1167320A (en) | 1966-12-30 | 1966-12-30 | An Arrangement for Controlling the Speed of an Electric Induction Motor. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1167320A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2150772A (en) * | 1983-12-01 | 1985-07-03 | Barry Wayne Williams | Motor drive circuits |
| DE3534570A1 (en) * | 1984-10-05 | 1986-04-10 | Schrack Elektronik Ag | DC / AC CONVERTER |
| GB2272339A (en) * | 1992-11-10 | 1994-05-11 | Philips Electronics Nv | Circuit arrangement for driving an inductive load |
-
1966
- 1966-12-30 GB GB5835566A patent/GB1167320A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2150772A (en) * | 1983-12-01 | 1985-07-03 | Barry Wayne Williams | Motor drive circuits |
| DE3534570A1 (en) * | 1984-10-05 | 1986-04-10 | Schrack Elektronik Ag | DC / AC CONVERTER |
| GB2272339A (en) * | 1992-11-10 | 1994-05-11 | Philips Electronics Nv | Circuit arrangement for driving an inductive load |
| US5514942A (en) * | 1992-11-10 | 1996-05-07 | U.S. Philips Corporation | Circuit arrangement for powering control circuitry and driving an inductive load from a single DC source |
| GB2272339B (en) * | 1992-11-10 | 1996-10-23 | Philips Electronics Nv | Circuit arrangement for driving an inductive load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |