TWM583560U - High-power-factor AC voltage stabilizer and uninterruptable power supply device thereof - Google Patents

Abstract

A high-power factor AC voltage regulator and a non-stop device thereof include: a three-phase isolation transformer, the primary side of the three-phase isolation transformer is a three-phase AC power source, and the secondary side of the three-phase isolation transformer corresponds to each phase AC power source. There are two secondary-side output terminals, one of which is a delta connection and the other secondary-side output terminal is a Y-connection; a first three-phase bridge rectifier; a second three-phase bridge A rectifier; a filter circuit that is connected to the first three-phase bridge rectifier and the second three-phase bridge rectifier and filters the DC positive voltage and the DC negative voltage; half the bridge inverter, the half A bridge inverter is connected to the filter circuit, and then an AC output voltage is generated through the half-bridge inverter; each half-wave voltage of the half-bridge inverter is individually connected by each △ -type connection and each Y-type connection. The power supply makes the power consumed by the △ -type wiring and the Y-type wiring approach the same, so that it produces a better linear current, which can achieve the effect of high power factor without the need for additional control circuits.

Description

High power factor AC voltage regulator and uninterruptible power device

This creation is about an AC voltage regulator, especially a high power factor AC voltage regulator.

According to the AC voltage regulator generally used for three-phase AC, such as the Republic of China Patent No. I234698, it mainly controls the switching action of the switch through the current hysteresis circuit, so that the output of the power supply output is balanced and stabilized.

The voltage regulator, which is generally used for three-phase AC power, can achieve the function of voltage stabilization, but it needs a control circuit to control the sequence of current entry to achieve the function of voltage stabilization output, which causes the control circuit to become a factor of possible failure. Moreover, the control circuit also has power consumption, so that it cannot have a better power factor.

Therefore, how to eliminate the above-mentioned shortcomings is the technical difficulty that the creators of this case want to solve.

In view of the above problems of the existing three-phase electric AC voltage regulators, the purpose of this creation is to provide an AC voltage regulator with a high power factor and its uninterruptible device.

In order to achieve the above purpose, this creative department provides a high power factor AC voltage regulator and its uninterruptible power device, which include: Three-phase isolation transformer. The primary side of the three-phase isolation transformer is a three-phase power source. The secondary side of the three-phase isolation transformer has two secondary-side output terminals corresponding to each phase AC power source. The three-phase isolation transformer corresponds to each phase AC power source. One of the secondary side output terminals forms a delta connection, and the three-phase isolation transformer corresponds to the other secondary side output terminal of each phase AC power source to form a Y connection.

A first three-phase bridge rectifier is connected to a delta connection formed by the secondary output terminal of one of the three-phase isolation transformers corresponding to each phase of the AC power source.

A second three-phase bridge rectifier is connected to a Y-shaped connection formed on the other secondary output terminal of the three-phase isolation transformer corresponding to each phase of the AC power source.

The delta connection is rectified by the first three-phase bridge rectifier to generate a direct current positive voltage, and the delta connection is rectified by the second three-phase bridge rectifier to generate a direct current negative voltage.

A filter circuit is connected to the first three-phase bridge rectifier and the second three-phase bridge rectifier, and filters the DC positive voltage and the DC negative voltage.

A half-bridge inverter, the half-bridge inverter is connected to the filter circuit, and an AC output voltage is generated through the half-bridge inverter.

With this half-bridge inverter, each half-wave voltage is supplied by each △ -type wiring through the first three-phase bridge rectifier and each Y-type wiring through the second three-phase bridge rectifier. The power consumed by the type wiring is almost the same, which makes it produce a better linear current, which can make the power factor greater than 0.95, and thus achieve the effect of high power factor without the use of additional control circuits.

In addition, this book can add two sets of half-bridge inverters in parallel with the half-bridge inverters at the back of the filter circuit to generate three-phase AC output voltage.

The present invention provides another embodiment, a high power factor AC voltage regulator and Its uninterruptible power device includes: a three-phase isolation transformer, the primary side of the three-phase isolation transformer is a three-phase power source, and the secondary side of the three-phase isolation transformer has two secondary-side output terminals corresponding to each phase AC power source. The three-phase isolation transformer forms a delta connection corresponding to one of the secondary-side output terminals of each phase AC power source, and the three-phase isolation transformer forms a Y-type connection corresponding to the other secondary side output terminal of each phase AC power source.

A first three-phase bridge rectifier is connected to a delta connection formed by the secondary output terminal of one of the three-phase isolation transformers corresponding to each phase of the AC power source.

A second three-phase bridge rectifier is connected to a Y-shaped connection formed on the other secondary output terminal of the three-phase isolation transformer corresponding to each phase of the AC power source.

The delta connection is rectified by the first three-phase bridge rectifier to generate a direct current positive voltage, and the delta connection is rectified by the second three-phase bridge rectifier to generate a direct current negative voltage.

A booster circuit having a power storage device. The booster circuit having a power storage device is connected to a first three-phase bridge rectifier and a second three-phase bridge rectifier, and boosts the DC positive voltage and the DC negative voltage.

A half-bridge inverter, the half-bridge inverter is connected to the booster circuit with a power storage device, and an AC output voltage is generated through the half-bridge inverter.

With this half-bridge inverter, each half-wave voltage is supplied by each △ -type wiring through the first three-phase bridge rectifier and each Y-type wiring through the second three-phase bridge rectifier. The power consumed by the type wiring is close to the same, which makes it produce a better linear current, and the power factor can be greater than 0.95, thereby achieving the effect of high power factor without the use of additional control circuits.

When the three-phase power input terminal is out of power, the power storage device in the booster circuit with the power storage device will output DC power for boosting, and then it can also provide 2.5 ~ 3HZ output power through the inverter.

The power storage device in the booster circuit provided with the power storage device can be replaced with a power storage device with a different power storage amount as required.

In addition, the creation can add two sets of half-bridge inverters in parallel with the half-bridge inverters at the back end of the booster circuit with the power storage device, which can generate three-phase AC output voltage.

1‧‧‧Three-phase power

21‧‧‧Three-phase isolation transformer

3‧‧‧ △ type wiring

31‧‧‧ secondary output

32‧‧‧ secondary output

33‧‧‧ secondary output

4‧‧‧Y-type wiring

41‧‧‧ secondary output

42‧‧‧ secondary output

43‧‧‧ secondary output

5‧‧‧The first three-phase bridge rectifier

51‧‧‧DC positive voltage

6‧‧‧The second three-phase bridge rectifier

61‧‧‧DC negative voltage

7‧‧‧ filter circuit

8‧‧‧ half-bridge inverter

81‧‧‧ half-bridge inverter

82‧‧‧ Half-Bridge Inverter

9‧‧‧Boost circuit with power storage device

The first picture is a schematic circuit diagram of this creation.

The second picture is a block diagram of this creation.

The second picture A is a block flow diagram of the creation.

The third picture is the three-phase output diagram for this creation.

The fourth picture is a schematic diagram of adding a three-phase output block for this creation.

The fifth figure is a schematic diagram of the uninterruptible circuit for this creation.

The sixth diagram is a block diagram of the uninterruptible circuit for this creation.

The sixth diagram A is the flow chart of the block diagram of the uninterruptible circuit for this creation.

The seventh diagram is the three-phase output schematic diagram of the uninterruptible circuit for this creation.

The eighth figure is a schematic diagram of the three-phase output block of the uninterruptible circuit for this creation.

In order to make your reviewer more convenient and concise to understand the other features, contents and advantages of this creation and the effect achieved by it, the creation will be described in detail with the accompanying drawings as follows: Please refer to the first graph and the second graph. A high power factor AC voltage regulator and its uninterruptible power device include: a three-phase isolation transformer 21, and the three-phase isolation transformer 21 is a three-phase power source on one side. The secondary side of the three-phase isolation transformer 21 has two secondary-side output terminals 31, 32, 33, 41, 42, 43 for each phase of the AC power supply, and the three-phase isolation transformer 21 corresponds to one of the AC power sources of each phase. The secondary-side output terminals 31, 32, and 33 form a delta connection 3, and the three-phase isolation transformer 21 corresponds to the other secondary-side output terminals 41, 42, 43 of each phase AC power supply to form a Y-type connection 4.

A first three-phase bridge rectifier 5 is connected to the delta connection 3 formed by the three-phase isolation transformer 31 corresponding to one of the secondary-side output terminals 31, 32, and 33 of each phase AC power source.

A second three-phase bridge rectifier 6 is connected to the Y-shaped wiring 4 formed by the three-phase isolation transformer 21 corresponding to the other secondary-side output terminals 41, 42, 43 of each phase AC power source.

The delta connection 3 is rectified by the first three-phase bridge rectifier 5 to generate a direct current positive voltage 51, and the Y connection 4 is rectified by the second three-phase bridge rectifier 6 to generate a direct current negative voltage 61.

A filter circuit 7 is connected to the first three-phase bridge rectifier 5 and the second three-phase bridge rectifier 6 and filters the DC positive voltage 51 and the DC negative voltage 61.

A half-bridge inverter 8, which is connected to the filter circuit 7 and generates an AC output voltage via the half-bridge inverter 8.

Please continue to refer to the second diagram A. With this half-bridge inverter 8, each half-wave voltage is transmitted by each delta-type connection 3 through the first three-phase bridge rectifier 5 and each Y-connection 4 through the second three-phase. The bridge rectifier 6 is used to supply power, so that the power consumed by the △ -type wiring 3 and the Y-type wiring 4 approaches In the same way, it can generate a better linear current, and the power factor can be greater than 0.95, which can achieve the effect of high power factor without using additional control circuits.

Please refer to the third and fourth figures, and this book can add two sets of half-bridge inverters 81 and 82 at the back end of the filter circuit 7 in parallel with the half-bridge inverter 8 to generate three-phase AC. The output voltage.

Please refer to the fifth and sixth figures, which are another embodiment of the present invention. A high-power factor AC voltage regulator and its uninterruptible power device include a three-phase isolation transformer 21, and the three-phase isolation transformer 21 The primary side is a three-phase power source. The secondary side of the three-phase isolation transformer 21 corresponds to two secondary-side output terminals 31, 32, 33, 41, 42, 43 for each phase of the AC power source. The three-phase isolation transformer 21 corresponds to each The secondary-side output terminals 31, 32, and 33 of one of the phase AC power sources form a delta connection 3, and the three-phase isolation transformer 21 corresponds to the other secondary-side output terminals 41, 42, 43 of each phase AC power source. Form a Y-shaped connection 4.

A first three-phase bridge rectifier 5 is connected to a delta connection 3 formed by the three-phase isolation transformer 21 corresponding to one of the secondary-side output terminals 31, 32, and 33 of each phase AC power source.

A second three-phase bridge rectifier 6 is connected to the Y-shaped wiring 4 formed by the three-phase isolation transformer 21 corresponding to the other secondary-side output terminals 41, 42, 43 of each phase AC power source.

The delta connection 3 is rectified through the first three-phase bridge rectifier 5 to generate a direct current positive voltage 51, and the delta connection 4 is rectified through the second three-phase bridge rectifier 6 to generate a direct current negative voltage 61.

A step-up circuit 9 having a power storage device. The step-up circuit 9 having a power storage device is connected to the first three-phase bridge rectifier 5 and the second three-phase bridge rectifier 6 and supplies positive current to the direct current. The voltage 51 and the DC negative voltage 61 are boosted.

A half-bridge inverter 8, the half-bridge inverter 8 is connected to the booster circuit 9 with a power storage device, and an AC output voltage is generated through the half-bridge inverter 8.

Please continue to refer to the sixth diagram A. With this half-bridge inverter 8, each half-wave voltage is transmitted by the delta connection 3 through the first three-phase bridge rectifier 5 and the Y-connection 4 through the second three-phase bridge. The rectifier 6 is used to supply power, so that the power consumed by the △ -type wiring 3 and the Y-type wiring 4 is close to the same, so that it produces a better linear current, and the power factor can be greater than 0.95, and thus achieve a high power factor without the need The effect of using additional control circuits.

When the input terminal of the three-phase power supply 1 is powered off, the power storage device in the booster circuit 9 with the power storage device will output DC power for boosting, and then it can also provide 2.5 ~ 3HZ output power through the half-bridge inverter 8.

The power storage device in the booster circuit 9 having the power storage device can be replaced with a power storage device with a different power storage amount as required.

Please refer to the seventh diagram and the eighth diagram, and this creation can add two sets of half-bridge inverters 81 and 82 in parallel with the half-bridge inverter 8 at the rear end of the booster circuit 9 with the power storage device. That is, a three-phase AC output voltage can be generated.

Claims (4)

A high-power factor AC voltage regulator and a non-stop device include: a three-phase isolation transformer, the primary side of the three-phase isolation transformer is a three-phase power source, and the secondary side of the three-phase isolation transformer has a corresponding one for each phase of the AC power source. Two secondary-side output terminals, the three-phase isolation transformer corresponds to one of each phase of the AC power supply to form a delta connection, and the three-phase isolation transformer corresponds to the other secondary of each phase of the AC power supply A Y-type connection is formed on the side output terminal; a first three-phase bridge rectifier is connected to the △ -type connection formed on the secondary side output terminal of one of the three-phase AC power sources corresponding to each phase of the AC power supply; The second three-phase bridge rectifier is connected to the Y-shaped wiring formed on the other secondary output end of the three-phase isolation transformer corresponding to each phase of the AC power supply; a filter circuit, the filter circuit and the first three-phase bridge The half-bridge inverter is connected to the filter circuit, and an AC output voltage is generated through the half-bridge inverter. According to the high power factor AC voltage regulator and the uninterruptible power device described in the first patent application scope, the half-bridge inverter further includes two sets of half-bridge inverters connected in parallel. A high-power factor AC voltage regulator and a non-stop device include: a three-phase isolation transformer, the primary side of the three-phase isolation transformer is a three-phase power source, and the secondary side of the three-phase isolation transformer has a corresponding one for each phase of the AC power source. Two secondary-side output terminals, the three-phase isolation transformer corresponds to one of each phase of the AC power supply to form a delta connection, and the three-phase isolation transformer corresponds to the other secondary of each phase of the AC power supply A Y-type connection is formed on the side output terminal; a first three-phase bridge rectifier is connected to the △ -type connection formed on the secondary side output terminal of one of the three-phase AC power sources corresponding to each phase of the AC power supply; The second three-phase bridge rectifier is connected to the Y-shaped wiring formed by the output terminal of the other secondary side of the three-phase isolation transformer corresponding to each phase of the AC power source; a booster circuit having a power storage device having a power storage device The booster circuit is connected to the first three-phase bridge rectifier and the second three-phase bridge rectifier; a half-bridge inverter, the half-bridge inverter is connected to the booster circuit having a power storage device, and via Half-bridge inverter generates an alternating output voltage. According to the high power factor AC voltage regulator and the uninterruptible device described in the third item of the patent application scope, the half-bridge inverter further includes two sets of half-bridge inverters connected in parallel.