WO2019125206A1 - Economical closed-loop inductive inverter - Google Patents
Economical closed-loop inductive inverter Download PDFInfo
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- WO2019125206A1 WO2019125206A1 PCT/RU2018/000285 RU2018000285W WO2019125206A1 WO 2019125206 A1 WO2019125206 A1 WO 2019125206A1 RU 2018000285 W RU2018000285 W RU 2018000285W WO 2019125206 A1 WO2019125206 A1 WO 2019125206A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
- H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/523—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with LC-resonance circuit in the main circuit
Definitions
- the invention relates to the field of electrical engineering and can be used, in particular, to power the resistive load in economy mode.
- a prior art combined rectifier with an additional linear power take-off contains a diode connected in series to the primary winding of a power matching transformer, the secondary winding of which is connected to the input of a bridge rectifier whose output is connected in parallel with a load and a capacitor, four current transformers, the primary windings of which are connected in series with each other, the diode and the primary winding of the power with
- the secondary transformer is connected to the turn groups of the primary winding of the summing transformer, the secondary winding of which is connected in parallel to the input of the second bridge rectifier, the output of which is connected in parallel to the second load and the capacitor.
- the disadvantage of the known combined rectifier is the use of unmanaged electronic key and single-phase circuit, which reduces the efficiency of its work.
- the technical result is to supply the active load with the converted reactive power.
- figure 1 presents the electrical circuit of an economical induction inverter with feedback
- figure 2 presents the timing diagram of the currents of the power part of the circuit and the voltage control transistors.
- Economical induction inverter with feedback contains thyristors 1 - 3 (figure 1), three-phase inductance with steel 7, capacitors 11 - 16, single-phase power transformers 8 - 10, rectifiers 4 - 6, transistors 17 - 19, single-phase inductors with steel 20–22, active load 23 and control system 24, with a three-phase inductance coil with steel 7 connected in parallel to a three-phase AC voltage source, through thyristors 1–3 and primary windings of power takeoff transformers 8–10 in each phase, connected Three capacitors 14-16 connected by a star are connected in series with a three-phase inductance coil with steel 7, connected by a star, parallel to the phase windings of a three-phase inductor with steel 7 and an active load 23, three other capacitors 11-13 connected in parallel with rectifier outputs 4-6, the inputs of which are connected parallel to the secondary windings of single-phase power transformers 8 - 10, the outputs of the rectifiers 4 - 6 are also connected in parallel to the phases
- the capacitance of the capacitors connected by a star 14–16 is selected according to the resonance condition with the inductor 7. Due to the resonance mode, the magnetizing current of the inductance 7 decreases. - 6. At the time of the current free pause, these capacitors are discharged to an alternating voltage source through transistors 17-19 and inductors 20-22, returning part of the energy to the source.
- the control system 24 provides control of thyristors and transistors.
- the time diagrams shown in figure 2 shows the currents of the power part of the circuit and the voltage control transistors.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to the field of electrical engineering and can be used, in particular, for powering an active load in an economical regime. The claimed invention achieves the technical result of powering an active load with converted reactive power. An economical closed-loop inductive inverter comprises thyristors, a steel-containing three-phase induction coil, capacitors, single-phase power take-off transformers, rectifiers, transistors, steel-containing single-phase induction coils, an active load, and a control system. In the economical closed-loop inductive inverter, the steel-containing three-phase induction coil is connected in parallel to a three-phase ac voltage source via the thyristors and the primary windings of the power take-off transformers in each phase, connected in sequence to a steel-containing three-phase induction coil, three star-connected capacitors are connected in parallel to the phase windings of the steel-containing three-phase induction coil and the active load, three other capacitors are connected in parallel by the outputs of the rectifiers, the inputs of which are connected in parallel to the secondary windings of the single-phase power take-off transformers, the outputs of the rectifiers are also connected in parallel to the phases of the ac voltage source via the sequence-connected transistors and steel-containing single-phase induction coils.
Description
ЭКОНОМИЧНЫЙ ИНДУКЦИОННЫЙ ИНВЕРТОР С ОБРАТНОЙ связью ECONOMIC INDUCTION INVERTER WITH FEEDBACK
Область техники Technical field
Изобртение относится к области электротехники и может быть использовано, в частности, для питания активной нагрузки в экономичном режиме. The invention relates to the field of electrical engineering and can be used, in particular, to power the resistive load in economy mode.
Предшествующий уровень техники Prior art
Из уровня техники известен комбинированный выпрямитель с дополнительным линейным отбором мощности, раскрытый в патенте на полезную модель RU 112542, опубликованном 10.01.2012, содержащий диод, соединённый последовательно первичной обмотке силового согласующего трансформатора, вторичная обмотка которого соединена со входом мостового выпрямителя, выход которого параллельно соединён с нагрузкой и конденсатором, четыре трансформатора тока, первичные обмотки которых соединены последовательно между собой, диодом и первичной обмоткой силового согласующего трансформатора, вторичные обмотки трансформаторов тока соединены с группами витков первичной обмотки суммирующего трансформатора, вторичная обмотка которого соединена параллельно входу второго мостового выпрямителя, выход которого соединён параллельно вторым нагрузке и конденсатору. A prior art combined rectifier with an additional linear power take-off, disclosed in utility patent RU 112542, published 01/10/2012, contains a diode connected in series to the primary winding of a power matching transformer, the secondary winding of which is connected to the input of a bridge rectifier whose output is connected in parallel with a load and a capacitor, four current transformers, the primary windings of which are connected in series with each other, the diode and the primary winding of the power with The secondary transformer is connected to the turn groups of the primary winding of the summing transformer, the secondary winding of which is connected in parallel to the input of the second bridge rectifier, the output of which is connected in parallel to the second load and the capacitor.
Известный комбинированный выпрямитель является наиболее близким к заявленному изобретению. Known combined rectifier is the closest to the claimed invention.
Недостатком известного комбинированного выпрямителя является применение неуправляемого электронного ключа и однофазная схема, что снижает эффективность его работы. The disadvantage of the known combined rectifier is the use of unmanaged electronic key and single-phase circuit, which reduces the efficiency of its work.
Раскрытие изобретения DISCLOSURE OF INVENTION
Техническим результатом, на достижение которого направлено заявленное изобретение, является питание активной нагрузки преобразованной реактивной мощностью. The technical result, the achievement of which the claimed invention is directed, is to supply the active load with the converted reactive power.
Указанный технический результат достигается тем, что в экономичном индукционном инверторе с обратной связью, содержащем тиристоры, трёхфазную катушку индуктивности со сталью, конденсаторы, однофазные трансформаторы отбора мощности, выпрямители, транзисторы, однофазные катушки индуктивности со сталью, активную нагрузку и систему управления, трёхфазная катушка индуктивности со сталью
соединена параллельно трёхфазному источнику переменного напряжения, через тиристоры и первичные обмотки трансформаторов отбора мощности в каждой фазе, соединённые последовательно трёхфазной катушке индуктивности со сталью, три конденсатора, соединённые звездой, подключены параллельно фазным обмоткам трёхфазной катушки индуктивности со сталью и активной нагрузке, три других конденсатора подключены параллельно выходам выпрямителей, входы которых соединены параллельно вторичным обмоткам однофазных трансформаторов отбора мощности, выходы выпрямителей также соединены параллельно фазам источника переменного напряжения, через соединённые последовательно транзисторы и однофазные катушки индуктивности со сталью. This technical result is achieved by the fact that in an economical induction inverter with feedback containing thyristors, a three-phase inductor with steel, capacitors, single-phase power take-off transformers, rectifiers, transistors, single-phase inductors with steel, an active load and control system, a three-phase inductance with steel connected in parallel to a three-phase AC voltage source, through the thyristors and primary windings of power transformers in each phase, connected in series by a three-phase inductor to steel, three capacitors connected by a star, connected in parallel to the phase windings of a three-phase inductor with steel and an active load, three other capacitors connected parallel to the outputs of the rectifiers, the inputs of which are connected in parallel to the secondary windings of single-phase power take-off transformers, The outputs of the rectifiers are also connected in parallel to the phases of the alternating voltage source, through transistors connected in series and single-phase inductors with steel.
Краткое описание фигур чертежей Brief Description of the Drawings
Сущность изобретения поясняется чертежами, где: The invention is illustrated by drawings, where:
на фиг.1 представлена принципиальная электрическая схема экономичного индукционного инвертора с обратной связью; figure 1 presents the electrical circuit of an economical induction inverter with feedback;
на фиг.2 представлены временные диаграммы токов силовой части схемы и напряжения управления транзисторами. figure 2 presents the timing diagram of the currents of the power part of the circuit and the voltage control transistors.
Лучший вариант осуществления изобретения The best embodiment of the invention
Экономичный индукционный инвертор с обратной связью содержит тиристоры 1 - 3 (фиг.1), трёхфазную катушку индуктивности со сталью 7, конденсаторы 11 - 16, однофазные трансформаторы отбора мощности 8 - 10, выпрямители 4 - 6, транзисторы 17 - 19, однофазные катушки индуктивности со сталью 20 - 22, активную нагрузку 23 и систему управления 24, причём трёхфазная катушка индуктивности со сталью 7 соединена параллельно трёхфазному источнику переменного напряжения, через тиристоры 1 - 3 и первичные обмотки трансформаторов отбора мощности 8 - 10 в каждой фазе, соединённые последовательно трёхфазной катушке индуктивности со сталью 7, три конденсатора 14 - 16, соединённые звездой, подключены параллельно фазным обмоткам трёхфазной катушки индуктивности со сталью 7 и активной нагрузке 23, три других конденсатора 11 - 13 подключены параллельно выходам выпрямителей 4 - 6, входы которых соединены параллельно вторичным обмоткам однофазных трансформаторов отбора мощности 8 - 10, выходы выпрямителей 4 - 6 также соединены параллельно фазам источника переменного напряжения, через соединённые
последовательно транзисторы 17 - 19 и однофазные катушки индуктивности со стальюEconomical induction inverter with feedback contains thyristors 1 - 3 (figure 1), three-phase inductance with steel 7, capacitors 11 - 16, single-phase power transformers 8 - 10, rectifiers 4 - 6, transistors 17 - 19, single-phase inductors with steel 20–22, active load 23 and control system 24, with a three-phase inductance coil with steel 7 connected in parallel to a three-phase AC voltage source, through thyristors 1–3 and primary windings of power takeoff transformers 8–10 in each phase, connected Three capacitors 14-16 connected by a star are connected in series with a three-phase inductance coil with steel 7, connected by a star, parallel to the phase windings of a three-phase inductor with steel 7 and an active load 23, three other capacitors 11-13 connected in parallel with rectifier outputs 4-6, the inputs of which are connected parallel to the secondary windings of single-phase power transformers 8 - 10, the outputs of the rectifiers 4 - 6 are also connected in parallel to the phases of the AC voltage source, through the connected 17 - 19 transistors and single-phase inductors with steel in series
20 - 22. 20-22.
Экономичный индукционный инвертор с обратной связью работает следующим образом. Трёхфазное переменное напряжение однополупериодно выпрямляется тиристорами 1 - 3. Оставшийся полупериод подаётся на трёхфазную катушку индуктивности со сталью 7, намагничивая её, на трёхфазную нагрузку 23 и конденсаторы, соединённые звездой 14 - 16. Возникший магнитный поток в катушке индуктивности 7 индуцирует в её обмотках ЭДС самоиндукции, в результате чего, в бестоковую паузу, возникает второй недостающий полупериод, который также подаётся на нагрузку 23. В результате чего, ток, протекающий через тиристоры и первичные обмотки однофазных трансформаторов отбора мощности 8 - 10 - однополупериодный, а ток, протекающий в цепи нагрузки 23 - синусоидальный. Ёмкость конденсаторов, соединённых звездой 14 - 16 подобрана по условию резонанса с катушкой индуктивности 7. Благодаря режиму резонанса, уменьшается ток намагничивания катушки индуктивности 7. При протекании полупериода тока, заряжаются конденсаторы 11 - 13, через однофазные трансформаторы отбора мощности 8 - 10 и выпрямители 4 - 6. В момент бестоковой паузы, эти конденсаторы разряжаются на источник переменного напряжения через транзисторы 17 - 19 и катушки индуктивности 20 - 22, возвращая часть энергии источнику. Система управления 24 обеспечивает управление тиристорами и транзисторами. Economical induction inverter with feedback works as follows. Three-phase alternating voltage half-wave rectifies thyristors 1 - 3. The remaining half-period is supplied to the three-phase inductance coil with steel 7, magnetizing it into three-phase load 23 and capacitors connected by a star 14 - 16. The arising magnetic flux in the inductor 7 induces in its windings As a result, in the dead time, there is a second missing half-period, which is also fed to the load 23. As a result, the current flowing through the thyristors and the primary windings of single-phase tr 8-10 power take-off transformers are half-wave, and the current flowing in load circuit 23 is sinusoidal. The capacitance of the capacitors connected by a star 14–16 is selected according to the resonance condition with the inductor 7. Due to the resonance mode, the magnetizing current of the inductance 7 decreases. - 6. At the time of the current free pause, these capacitors are discharged to an alternating voltage source through transistors 17-19 and inductors 20-22, returning part of the energy to the source. The control system 24 provides control of thyristors and transistors.
На временных диаграммах, изображённых на фиг.2, показаны токи силовой части схемы и напряжения управления транзисторами.
The time diagrams shown in figure 2, shows the currents of the power part of the circuit and the voltage control transistors.
Claims
ФОРМУЛА ИЗОБРЕТЕНИЯ CLAIM
Экономичный индукционный инвертор с обратной связью, содержащий тиристоры, трёхфазную катушку индуктивности со сталью, конденсаторы, однофазные трансформаторы отбора мощности, выпрямители, транзисторы, однофазные катушки индуктивности со сталью, активную нагрузку и систему управления, отличающийся тем, что, трёхфазная катушка индуктивности со сталью соединена параллельно трёхфазному источнику переменного напряжения, через тиристоры и первичные обмотки трансформаторов отбора мощности в каждой фазе, соединённые последовательно трёхфазной катушке индуктивности со сталью, три конденсатора, соединённые звездой, подключены параллельно фазным обмоткам трёхфазной катушки индуктивности со сталью и активной нагрузке, три других конденсатора подключены параллельно выходам выпрямителей, входы которых соединены параллельно вторичным обмоткам однофазных трансформаторов отбора мощности, выходы выпрямителей также соединены параллельно фазам источника переменного напряжения, через соединённые последовательно транзисторы и однофазные катушки индуктивности со сталью.
Cost-effective induction inverter with feedback containing thyristors, three-phase inductance with steel, capacitors, single-phase power take-off transformers, rectifiers, transistors, single-phase inductors with steel, resistive load and control system, characterized in that the three-phase inductance with steel is connected parallel to a three-phase source of alternating voltage, through thyristors and primary windings of power transformers in each phase, connected in series of three three phase inductors with steel, three capacitors connected by a star are connected in parallel to the phase windings of a three-phase inductor with steel and a resistive load, three other capacitors are connected in parallel to the rectifier outputs, the inputs of which are connected in parallel to the secondary windings of single-phase power transformers, and the rectifier outputs are also connected in parallel to the phases AC voltage source, connected in series with transistors and single-phase inductors with steel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2017145412 | 2017-12-22 | ||
| RU2017145412 | 2017-12-22 |
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| WO2019125206A1 true WO2019125206A1 (en) | 2019-06-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2448805A1 (en) * | 1974-10-12 | 1976-04-22 | Licentia Gmbh | Inverter for three-phase current generation - consists of three naturally switching controlled rectifiers of same output polarity connected in series |
| US4831508A (en) * | 1987-10-20 | 1989-05-16 | Computer Products Inc. | Power supply system having improved input power factor |
| RU2209501C2 (en) * | 2001-06-21 | 2003-07-27 | Туманов Иван Михайлович | Method and device for regulating and controlling power characteristics in three-phase supply mains |
| RU60810U1 (en) * | 2006-09-18 | 2007-01-27 | Закрытое акционерное общество "Электроника силовая" | AGREED RESONANT FREQUENCY CONVERTER WITH INDIVIDUALLY EXPRESSED DC LINK |
| RU2305890C2 (en) * | 2005-03-25 | 2007-09-10 | Закрытое акционерное общество "РЭЛТЕК" | Method for controlling operation of m-phase ac-to-ac regulating converter |
-
2018
- 2018-05-03 WO PCT/RU2018/000285 patent/WO2019125206A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2448805A1 (en) * | 1974-10-12 | 1976-04-22 | Licentia Gmbh | Inverter for three-phase current generation - consists of three naturally switching controlled rectifiers of same output polarity connected in series |
| US4831508A (en) * | 1987-10-20 | 1989-05-16 | Computer Products Inc. | Power supply system having improved input power factor |
| RU2209501C2 (en) * | 2001-06-21 | 2003-07-27 | Туманов Иван Михайлович | Method and device for regulating and controlling power characteristics in three-phase supply mains |
| RU2305890C2 (en) * | 2005-03-25 | 2007-09-10 | Закрытое акционерное общество "РЭЛТЕК" | Method for controlling operation of m-phase ac-to-ac regulating converter |
| RU60810U1 (en) * | 2006-09-18 | 2007-01-27 | Закрытое акционерное общество "Электроника силовая" | AGREED RESONANT FREQUENCY CONVERTER WITH INDIVIDUALLY EXPRESSED DC LINK |
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