CN2388632Y - AC power supply manostat - Google Patents
AC power supply manostat Download PDFInfo
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- CN2388632Y CN2388632Y CN 99213655 CN99213655U CN2388632Y CN 2388632 Y CN2388632 Y CN 2388632Y CN 99213655 CN99213655 CN 99213655 CN 99213655 U CN99213655 U CN 99213655U CN 2388632 Y CN2388632 Y CN 2388632Y
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Abstract
The utility model relates to an AC power supply manostat. A transformer is connected in series between an input end and an output end, and the voltage and the phase of the transformer are changed to be plus and minus the input voltage so as to obtain regulation effect that the output voltage maintains constant, wherein, the input voltage is converted to high voltage direct currents, and then converted to high voltage alternate currents by a converter. The alternate currents change the converter by a control circuit according to the change of the output end so as to obtain the compensating voltage of different voltage and phase to be plus and minus the input voltage to maintain the constant output voltage. The utility model regulates the output of the high voltage by low voltage, and all circuits are operated in high frequency to achieve the purposes of miniaturization and high efficiency.
Description
The utility model relates to power regulator device, relates more specifically to a kind of AC power voltage stabilizer.It mainly has the transformer of being located between power input and output terminal, an AC/DC converter, and an AC/DC converter and a control circuit, it can regulate big voltage with small voltage, reaches the advantage of economy and voltage stabilizing.
As everyone knows, at home, office, the employed power supply of factory all are that generator by Utilities Electric Co. provides.Yet, because the voltage that Utilities Electric Co. provided is not steady state value, but remain in the little error range, for general electrical equipment user, often uprushing because of voltage causes circuit load unusual, though now general Electrical Appliances Designing changes by a small margin to voltage certain holding capacity is arranged, yet permanent the use down still can be lowered serviceable life, especially the higher electrical equipment of voltage ratio, voltage stability is important especially, so industrial various voltage stabilizers, the wherein a kind of mode competitively released, as shown in Figure 1, with the conducting phase angle of control circuit control thyratron (10), change the amplitude of boosting of transformer (11), reach the purpose of regulating output voltage, but owing to adopt the control mode of phase place conducting, very easily produce a large amount of noises, and waveform distortion is very big, so need install a L/C filtering circuit (12) additional, the filtering harmonic wave is to obtain output waveform preferably.So its shortcoming is that efficient is poor, disturb big.A kind of stabilizator structure is arranged in addition, as shown in Figure 2, after input voltage is the magnitude of voltage of various different height through transformer (20) lifting, on-off circuit (21) by forming again by relay and thyristor, height state according to input voltage, select suitable switch to give conducting, to reach the purpose of regulation voltage, but owing to flow through the electric current of load end also is the electric current of on-off element of flowing through, so when output capacity is had relatively high expectations, be not easy to obtain the high capacity on-off element, and if will improve when exporting the voltage stabilizing rate, certainly will increase on-off element quantity, to obtain more point of adjustment, this is its shortcoming.In view of this inventor through repetition test and research, proposes a kind of AC power voltage stabilizer structure, to improve shortcoming of the prior art.
The utility model fundamental purpose is to provide a kind of AC power voltage stabilizer that makes output voltage keep steady state value.
Another purpose of the present utility model can miniwatt reach the high-level efficiency AC power voltage stabilizer of regulating the high power capacity output effect for providing a kind of.
For achieving the above object, the utility model provides a kind of AC power voltage stabilizer, unsettled AC-input voltage can be adjusted into stable ac output voltage.This AC power voltage stabilizer comprise an input end, an output terminal and be connected in described input end and described output terminal between transformer.It is characterized in that described AC power voltage stabilizer also comprises: an AC/DC converter, be connected in described input end, in order to unsettled AC-input voltage is converted to a direct current voltage, one AC/DC converter, be connected between described AC/DC converter and the described transformer, in order to convert described DC voltage to high-frequency ac voltage, and transmit described high-frequency alternating current and be depressed into described transformer, to produce the AC compensation voltage of regulating usefulness, add and subtract mutually with described unsettled AC-input voltage, and then produce stable ac output voltage, an and control circuit, be connected in described input end, between described output terminal and the described AC/DC converter, in order to detect the ac output voltage of described output terminal, and respond the variation of described AC-input voltage and described ac output voltage and produce feedback signal, control described AC/DC converter, can change the size and the phase angle of described AC compensation voltage, reach the purpose of adjusting thus, more can miniwatt just reach the effect of regulating high power capacity output.
The simple declaration of accompanying drawing:
Fig. 1 is the structural representation of traditional voltage stabilizer;
Fig. 2 is the structural representation of another kind of traditional voltage stabilizer;
Fig. 3 is an operating circuit block scheme of the present utility model;
Fig. 4 is a detailed circuit schematic of the present utility model;
Fig. 5 is another embodiment operating circuit block diagram of the present utility model;
Fig. 6 is the detailed circuit schematic of another embodiment of the present utility model.
Main circuit structure of the present utility model, see also shown in Fig. 3 and 4, it has an ac power input end (31), one AC power output load end (32), the output terminal that it is serially connected with a transformer (40) between the two makes the alternating voltage of ac power input end (31) input can be subjected to the adjusting of transformer (40) and export AC power output load end (32) to.Wherein ac power input end (31) is connected in an AC/DC converter (50) in addition, it is (as 51 by four diodes, 52,53 and 54) and the full-wave bridge rectifier filtering circuit that constituted such as an electric capacity (55), in order to will the input ac signal through power factor correction, convert direct current power after the filtering to, then be connected in an AC/DC converter (70) again, convert dc signal to needed high-frequency ac electric power, after filtering, be resent to the input end of transformer (40), in order to produce the AC compensation voltage of regulating usefulness, add and subtract mutually with the unstable AC-input voltage of ac power input end (31) input, thereby reach the purpose of voltage stabilizing.Wherein, AC/DC converter (70) is combined into full-bridge width modulation (PWM) by four on-off elements (as 71,72,73 and 74), it is by the mode controlling and driving of a control circuit (60) with width modulation (PWM), produces required compensating signal and is connected in the former limit input end of this transformer (40).
In addition, control circuit of the present utility model (60) is made up of following basic circuit:
One synchronizing circuit (61), one end are connected in ac power input end (31), and the other end then is connected in a sinusoidal wave circuit (62), use so that input power supply and baseline sinusoidal wave produce synchronous effect;
One sinusoidal wave circuit (62), utilize a pierce circuit (64) to produce baseline sinusoidal wave shape, the one end is connected in a feedback circuit (68), can be subjected to the influence of feedback circuit (68) output signal and changes sinusoidal wave amplitude size, and export signal to a comparator circuit (65);
One triangle wave circuit (63) utilizes the triangular waveform of a pierce circuit (64) with the generation benchmark, and exports signal to a comparator circuit (65);
One pierce circuit (64) in order to the oscillator signal of generation fixed frequency, and exports sinusoidal wave circuit (62) and triangle wave circuit (63) respectively to;
One comparator circuit (65) in order to the output signal of input sine wave circuit (62) with triangle wave circuit (63), and after being compared, is exported compensating signal to a phase splitter (66);
One phase splitter (66) with the compensating signal of comparator circuit (65) output, exports corresponding driving circuit (67) respectively to according to its phase place difference;
One drive circuit (67), it receives the input signal of phase splitter (66), and produces the signal of a drive signal, produces the waveform of width modulation (PWM) with high frequency on-off element (71) to (74) such as conducting such as MOSFET or IGBT;
One feedback circuit (68), the one end is connected in AC power output load end (32), in order to the output voltage after the detection adjusting, and produce a signal, carry out continuous, instantaneous dynamic adjustment with the amplitude that changes baseline sinusoidal wave to export sinusoidal wave circuit (62) to.
Mode of operation of the present utility model, under normal condition, input voltage produces a direct current voltage after the rectification of diode (51) to (54) and electric capacity (55) and filtering, this DC voltage produces a high-voltage alternating electric signal through on-off element (71) to (74) in pulse width (PWM) modulation mode again, again through the coupling of transformer (40) be converted to one with the AC compensation voltage VR of the low-voltage, high-current of input voltage same frequency;
When causing output voltage to change when input voltage generation height variation, feedback circuit (68) via control circuit (60) detects, and driving switch element (71) to (74) makes transformer (40) bucking voltage VR phase place change, and add and subtract mutually with input voltage, and then reach the adjusting output voltage, make it be maintained the purpose of certain reference voltage.
For example: when input voltage raises, the bucking voltage VR that transformer (40) is produced will be 180 ° of (anti-phase) states of phase differential with the added value of input voltage, this moment input voltage then because of input voltage be subjected to the negative function of bucking voltage VR make output voltage not the reason input voltage rise and to increase.
Otherwise, when input voltage reduces, bucking voltage VR that transformer (40) is produced and input voltage phase difference are 0 ° (homophase), so the time output voltage values be input voltage value add the compensation VR, output voltage thereby rising, wherein the magnitude of voltage of this bucking voltage VR and phase change be because of continuous, the instantaneous and unremitting dynamic adjustment of control circuit (60), so the output voltage variable quantity can be kept extremely low state, and in the process of regulating the output state of unlikely generation interruption or step.And this transformer (40) only need provide the power capacity of the relative percentage of gross output capacity to get final product with the converter circuit that on-off element (71,72,73 and 74) is formed, as for making a 1000W voltage stabilizer, its needed adjusting power is general only to be to export general power ± 15% to get final product, promptly AC/DC converter wherein (50) only needs 150W with AC/DC converter (70) power demand, so power capacity that can be minimum can reach the purpose of regulating high capacity output, so just can easily make the high capacity voltage stabilizer.Therefore, the application has advantage economically.In addition, the whole circuit of the application more can reach miniaturization and high efficiency purpose all with high-frequency operation.
The utility model has an embodiment in addition, and it is used for three-phase power circuit, sees Fig. 5 and Fig. 6.As Fig. 5 and shown in Figure 6, it also has a transformer (81), an AC/DC converter (82), it is three-phase full wave rectifier circuit, a control circuit (83) and an AC/DC converter (84) that six diodes (821) and an electric capacity (822) are formed, it is the three phase full bridge formula convertor circuit that six on-off elements (841) are formed, and the circuit structure of described control circuit (83) is as the control circuit (60) of previous embodiment.By the change in voltage of the last bucking voltage VR of transformer (81), it is constant to make that three-phase output voltage is maintained.
In sum, AC power voltage stabilizer of the present utility model has practicality and progressive on the industry, and the utility model do not see any publication, also has novelty, meets the requirement of Patent Law to utility model patent.
Above-mentioned explanation only is a preferred embodiment of the present utility model, can not be used for limiting the scope that the utility model is implemented, all equal variation and modifications of being done according to claim scope of the present utility model all should belong in the scope that the utility model patent contained.
Claims (8)
1. AC power voltage stabilizer, in order to unsettled AC-input voltage is adjusted to stable ac output voltage, described AC power voltage stabilizer comprises:
One input end;
One output terminal;
One transformer is connected between described input end and the described output terminal;
It is characterized in that described AC power voltage stabilizer also comprises:
One AC/DC converter is connected in described input end, and described unsettled AC-input voltage is converted to a direct current electric signal;
One AC/DC converter, be connected between described AC/DC converter and the described transformer, convert described dc signal to the high-frequency ac electric signal, and transmit described high-frequency ac electric signal to described transformer, to produce the AC compensation voltage of regulating usefulness, add and subtract mutually with described unsettled AC-input voltage, and then obtain stable ac output voltage; And
One control circuit, be electrically connected between described input end, described output terminal and the described AC/DC converter, detect the ac output voltage of described output terminal, and respond the variation of described AC-input voltage and described ac output voltage and produce feedback signal, control size and phase angle that described AC/DC converter changes described AC compensation voltage, to reach the purpose of adjusting.
2. AC power voltage stabilizer as claimed in claim 1 is characterized in that described AC/DC converter comprises a plurality of diodes and an electric capacity, to described unsettled AC-input voltage rectification and filtering, thereby forms described dc signal.
3. AC power voltage stabilizer as claimed in claim 1 is characterized in that described AC/DC converter comprises a plurality of electronic switching elements, and it is controlled by described control circuit.
4. AC power voltage stabilizer as claimed in claim 1 is characterized in that described electronic switching element is the electronic switching element of high frequency.
5. AC power voltage stabilizer as claimed in claim 1 is characterized in that described high frequency electronic switch element is a kind of in IGBTs or the mos field effect transistor (MOSFETs).
6. AC power voltage stabilizer as claimed in claim 1 is characterized in that described control circuit comprises:
One synchronizing circuit, the one end is connected in ac power input end, and the other end then is connected in a sinusoidal wave circuit, makes input power supply and baseline sinusoidal wave produce synchronous effect;
One sinusoidal wave circuit utilizes pierce circuit to produce baseline sinusoidal wave shape, and the one end is connected in a feedback circuit, and the feedback signal that can be subjected to described feedback circuit output influences and changes the size of sinusoidal wave amplitude, and exports signal to comparator circuit;
One triangle wave circuit utilizes pierce circuit with generation benchmark triangular waveform, and exports signal to comparator circuit;
One pierce circuit produces the oscillator signal of fixed frequency, and exports sinusoidal wave circuit and triangle wave circuit respectively to;
One comparator circuit receives the signal that described sinusoidal wave circuit and described triangle wave circuit are exported, and after being compared, exports compensating signal to phase splitter;
One phase splitter, the compensating signal with comparator circuit is exported exports corresponding driving circuit respectively to according to the difference of its phase place;
One drive circuit, it receives the compensating signal of being exported by phase splitter, and produces a drive signal, produces the waveform of width modulation (PWM) with the described HF switch element of conducting; And
One feedback circuit, the one end is connected in AC power output load end, in order to detect the ac output voltage after regulating, and respond the variation of the ac output voltage after the described adjusting and produce described feedback signal to described sinusoidal wave circuit, with the amplitude of change baseline sinusoidal wave, thereby carry out continuously, dynamically adjust timely.
7. AC power voltage stabilizer as claimed in claim 1 is characterized in that described AC/DC converter is to comprise a plurality of diodes and the three-phase full wave rectifier circuit that electric capacity is formed.
8. AC power voltage stabilizer as claimed in claim 1 is characterized in that described AC/DC converter is the three phase full bridge formula convertor circuit that comprises that a plurality of electronic switching element is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99213655 CN2388632Y (en) | 1999-06-08 | 1999-06-08 | AC power supply manostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99213655 CN2388632Y (en) | 1999-06-08 | 1999-06-08 | AC power supply manostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2388632Y true CN2388632Y (en) | 2000-07-19 |
Family
ID=34006000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99213655 Expired - Lifetime CN2388632Y (en) | 1999-06-08 | 1999-06-08 | AC power supply manostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2388632Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397276C (en) * | 2002-11-06 | 2008-06-25 | 台达电子工业股份有限公司 | Electronic power supply voltage stabilizer |
| CN103378780A (en) * | 2012-04-12 | 2013-10-30 | 艾肯运动与健康公司 | High efficiency treadmill motor control |
| CN107612406A (en) * | 2017-09-06 | 2018-01-19 | 深圳市艾尔曼医疗电子仪器有限公司 | The non-constant frequency intermediate frequency power supply of capacitive variable load inversion high pressure and its mu balanced circuit |
| WO2019047056A1 (en) * | 2017-09-06 | 2019-03-14 | 深圳市艾尔曼医疗电子仪器有限公司 | Capacitive variable-load inverter high-voltage non-constant-frequency intermediate-frequency power supply and voltage-stabilizing circuit thereof |
| CN110231846A (en) * | 2019-06-10 | 2019-09-13 | 西安微电子技术研究所 | A kind of power module feedback control circuit difunctional with constant current and constant pressure |
-
1999
- 1999-06-08 CN CN 99213655 patent/CN2388632Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100397276C (en) * | 2002-11-06 | 2008-06-25 | 台达电子工业股份有限公司 | Electronic power supply voltage stabilizer |
| CN103378780A (en) * | 2012-04-12 | 2013-10-30 | 艾肯运动与健康公司 | High efficiency treadmill motor control |
| US9375605B2 (en) | 2012-04-12 | 2016-06-28 | Icon Health & Fitness, Inc. | High efficiency treadmill motor control |
| US10207145B2 (en) | 2012-04-12 | 2019-02-19 | Icon Health & Fitness, Inc. | High efficiency treadmill motor control |
| CN107612406A (en) * | 2017-09-06 | 2018-01-19 | 深圳市艾尔曼医疗电子仪器有限公司 | The non-constant frequency intermediate frequency power supply of capacitive variable load inversion high pressure and its mu balanced circuit |
| WO2019047056A1 (en) * | 2017-09-06 | 2019-03-14 | 深圳市艾尔曼医疗电子仪器有限公司 | Capacitive variable-load inverter high-voltage non-constant-frequency intermediate-frequency power supply and voltage-stabilizing circuit thereof |
| CN110231846A (en) * | 2019-06-10 | 2019-09-13 | 西安微电子技术研究所 | A kind of power module feedback control circuit difunctional with constant current and constant pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |