CN100446397C - High-frequency single switch-linear active filtering inverter - Google Patents
High-frequency single switch-linear active filtering inverter Download PDFInfo
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- CN100446397C CN100446397C CNB2005100949652A CN200510094965A CN100446397C CN 100446397 C CN100446397 C CN 100446397C CN B2005100949652 A CNB2005100949652 A CN B2005100949652A CN 200510094965 A CN200510094965 A CN 200510094965A CN 100446397 C CN100446397 C CN 100446397C
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Abstract
A high-frequency single switch-linearity active filtering inverter comprises a standard signal unit, a linearity active filtering inversion unit, an output unit and a high-frequency single switch converting unit, wherein the high-frequency single switch converting unit converts DC to double-half wave pulsation DC; the linearity active filtering inversion unit uses the double-half wave pulsation DC as the power supply of the linearity active filtering inversion unit and the power supply is filtered, shaped and inverted based on standard voltage provided by the standard signal unit as the standard signal of the linearity active filtering inversion unit to be supplied to the output unit. The inverter has the characteristics of simple circuit, high efficiency, low cost, broad application, favourable filtering effect, hard load characteristic and favourable power supply for various loads, such as resistors, sensors, capacitors, etc., and can be used for isolating the storage electric source of an electrical network and converting DC/AC in a power generating system.
Description
Technical field
The invention belongs to field of power electronics, be specifically related to a kind of high-frequency single switch linear active filtering inverter.
Background technology
The a large amount of vehicles that use of people such as automobile, train, boats and ships, aircraft etc. all need to use redundant electrical power and the self power generation power supply that breaks away from electrical network, and the outlying district that some electrical networks can't be powered also needs this power supply.These electric power systems that break away from electrical networks usually will be by battery stores electricity energy, and storage battery must to be undertaken after the DC/AC conversion by inverter could be its AC load power supply.Therefore the use of inverter is very extensive, and inversion transformation technique is growing.But existing inverter, otherwise circuit is too complicated, and cost performance is not high; Some technical indicators can not have concurrently simultaneously, are difficult to take into account simultaneously as efficient and waveform; The limitation of load capacity has also influenced the development of inversion transformation technique in addition.
Summary of the invention
Purpose of the present invention be exactly to overcome the shortcoming of existing inverter and provide that a kind of circuit is simple, efficient is high, cost is low, applied range, good wave filtering effect, high-frequency single switch linear active filtering inverter that load capacity is strong.
High-frequency single switch linear active filtering inverter provided by the present invention, it comprises: reference signal unit 4, inversion unit 2, output unit 3 it is characterized in that: further comprising high-frequency single switch converter unit 1; Inversion unit 2 is a linear active filtering inverter, and it is connected between high-frequency single switch converter unit 1 and the output unit 3; High-frequency single switch converter unit 1 is transformed to two half-wave pulsation DC with DC, the two half-waves pulsation of the little sawtooth of low frequency that linear active filtering inversion unit 2 is sent high-frequency single switch converter unit 1 here DC is as the power supply of this unit, the normal voltage that reference signal unit 4 is provided is as the reference signal of this unit, and linear active filtering inversion unit 2 carries out supplying with output unit 3 after filter shape and the inversion to power supply by its reference voltage signal.
Prime single tube high-frequency switch circuit of the present invention is transformed into the two half-waves pulsation DC of required waveform with DC, grade carries out the filtering inversion again through the back.Owing to adopted the linear active filtering inversion transformation technique, it can sponge the part (comprising little sawtooth of high-frequency pulsed width modulation generation and the crushed element that other interference signal forms) that exceeds reference signal among two half-wave pulsation DC, and finishes inversion simultaneously.The present invention can provide the output waveform of satisfied resistance, sense, the arbitrary load of capacitive or comprehensive load, is applicable to that all kinds of needs carry out the electric power system of DC/AC conversion.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is a frame principle figure of the present invention.
Fig. 2 is the circuit theory diagrams of unit 1 of the present invention.
Fig. 3 is the circuit theory diagrams of the embodiment of the invention 1.
Fig. 4 is the circuit theory diagrams of the embodiment of the invention 2.
Fig. 5 is the circuit theory diagrams of the embodiment of the invention 3.
Fig. 6 is the circuit theory diagrams of the embodiment of the invention 4.
Embodiment
High-frequency single switch converter unit 1 among Fig. 1 is made up of three links.Wherein the first link 1-1 is a high-frequency single switch copped wave link, and it is transformed into the high-frequency pulsed width modulation ripple with DC; The second link 1-2 is the passive filtering link, and it becomes two half-wave pulsation DC with the high-frequency pulsed width modulation wave conversion; The 3rd link 1-3 is the controlling unit of high-frequency single switch circuit, the feedback voltage signal that reference voltage signal that this controlling unit provides according to reference signal unit 4 and output unit 3 are sent back to, send its relevant pulse width modulation signals and control cut-offfing of high-frequency single switch pipe, make it carry out copped wave to DC by reference voltage.Between the second link 1-2 and output unit 3, be connected to linear active filtering inversion unit 2.High-frequency single switch converter unit 1 carries out the two half-wave pulsation of DC-DC conversion, the two half-waves pulsation of the little sawtooth of low frequency that linear active filtering inversion unit 2 is sent high-frequency single switch converter unit 1 here DC is as the power supply of this unit, and the normal voltage that reference signal unit 4 is provided is as the reference signal of this unit.Linear active filtering inversion unit 2 carries out supplying with output unit 3 after filter shape and the inversion to power supply by its reference voltage signal.
The collector electrode of the HF switch pipe T1 of the first link 1-1 connects the DC positive source among Fig. 2, its base stage meets the 3rd link 1-3, its emitter connects the negative pole of inductance L and sustained diode, another termination capacitor C of inductance L and power supply one end of linear active filtering inversion unit 2, after joining, the power supply other end of the capacitor C other end and linear active filtering inversion unit 2 and the positive pole of sustained diode receive the DC power cathode, diode D, inductance L, capacitor C constitutes passive filtering link 1-2, the radio-frequency component of this link energy filtering pulse width modulated wave is exported the two half-waves pulsation of the little sawtooth with a reference voltage waveform similarity DC.Reference signal unit 4 is when providing the normal voltage signal for linear active filtering inversion unit 2, also with two half-wave pulsation DC with its waveform similarity, deliver among the controlling unit 1-3 of high-frequency single switch converter unit 1 and make reference voltage, the feedback signal that controlling unit 1-3 sends back to by this reference voltage and output unit 3 is sent its relevant pulse width modulation signals and is controlled cut-offfing of high-frequency single switch pipe.The reference voltage that changes in the reference signal unit 4 just can be transformed into DC needed any AC waveform.Because the reference signal unit 4 among Fig. 2 is that reference voltage comes for example with two sinusoidal positive half wave pulsation DC, so high-frequency single switch converter unit 1 is output as the two sinusoidal positive half wave pulsation DC of little sawtooth of power stage.
Embodiment 1: the inverter bridge that the linear active filtering inversion unit 2 among Fig. 3 is made up of two pairs of shape tubes.The collector electrode of two NPN type inversion pipe T2, T3 is connected to the positive pole of high-frequency single switch converter unit 1, and their emitter connects the emitter of two positive-negative-positive inversion pipe T4, T5 respectively, and output unit 3 is connected between their emitter.The collector electrode of two positive-negative-positive inversion pipe T4, T5 and the negative pole that connects high-frequency single switch converter unit 1 form the loop, and the base stage of four inversion pipe T2, T3, T4, T5 is by reference signal unit 4 controls.When reference signal unit 4 for inverter bridge diagonal angle two shape tube T2, when T4 provides opposite polarity amplifying signal, this two shape tube T2, T4 simultaneously conducting power to output unit 3.The operation principle of another diagonal angle shape tube T3, T5 is identical with a last diagonal angle shape tube T2, T4.But two groups of diagonal angle shape tubes are to take turns conducting, and form the commutation inversion when change of current conducting.Because four pipes all are operated in the tracking magnifying state, so this four pipe has the filter function of following reference voltage concurrently.
Embodiment 2: the structure of Fig. 4 neutral line active power filtering inversion unit 2 and Fig. 3's is basic identical, and just inverter bridge is formed with homotype four pipes.Though inverter bridge is still diagonal angle two homotype pipe T6, T8 or another diagonal angle two homotype pipe T7, T9 conducting simultaneously.But because the working method difference of its two homotypes pipe, pipe T6, pipe T7 are amplifier tubes, are operated in the tracking magnifying state, bear linear active inversion filter action; And pipe T8, pipe T9 are switching tubes, are operated in the power frequency on off state of the no-voltage change of current, and they only participate in inversion.So reference signal unit 4 will also will provide identical switching signal for two switch transistor T 8 with T9 in turn in turn for two amplifier tube T6 and T7 provide polarity identical amplifying signal.No matter homotype four pipes still use positive-negative-positive with the NPN type, and the collector electrode of its two amplifier tube T6, T7 all is connected to the positive pole of high-frequency single switch converter unit 1; Emitter connects the collector electrode of two switch transistor T 8, T9 respectively, and output unit 3 is connected between the emitter of two amplifier tube T6, T7, and the emitter of two switch transistor T 8, T9 and the negative pole that connects high-frequency single switch converter unit 1 form the loop.
Embodiment 3: the linear active filtering inversion unit 2 among Fig. 5 is made up of two homotype amplifier tubes and the centre tapped isolating output transformer B1 of primary winding band.No matter amplifier tube still is that its connection of positive-negative-positive is identical with the NPN type: the emitter of amplifier tube T10, T11 connects the two ends of transformer B1 primary winding respectively, their collector electrode is connected to the positive pole of high-frequency single switch converter unit 1, the negative pole of high-frequency single switch converter unit 1 is received the centre cap of transformer B1 primary winding, the secondary output unit 3 that connects of transformer B1.Two amplifier tube T10, T11 take turns conducting, and amplifier tube also forms inversion with transformer, for output unit 3 is powered during conducting except that the filtering of following reference voltage.
Embodiment 4: the linear active filtering inversion unit 2 among Fig. 6 adds isolating output transformer B2 by the linear active inverter bridge and forms.Fig. 6 forms full-bridge with two pairs of shape tubes to amplify the inversion filter unit, and promptly full-bridge four pipe T12, T13, T14, T15 are operated in the tracking magnifying state.The collector electrode of NPN type two amplifier tube T12, T13 is connected to the positive pole of high-frequency single switch converter unit 1, their emitter connects the emitter of two amplifier tube T14, T15 respectively, their emitter also connects the simple winding two ends of transformer B2 respectively, and the negative pole that the collector electrode of two amplifier tube T14, T15 is connected to high-frequency single switch converter unit 1 forms the loop.If when forming half-bridge amplification inversion filter unit with homotype four pipes, two amplifier tube T12, T13 are operated in the tracking magnifying state, bear linear active inversion filter action; Two switch transistor T 14, T15 are operated in the power frequency on off state of the no-voltage change of current, only participate in inversion; No matter four pipes are both NPN type or positive-negative-positive, and the collector electrode of two amplifier tube T12, T13 all is connected to the positive pole of high-frequency single switch converter unit 1, and their emitter connects the collector electrode of two switch transistor T 14, T15 respectively.The negative pole that the emitter of two switch transistor T 14, T15 is connected to high-frequency single switch converter unit 1 forms the loop.The emitter of two amplifier tube T12, T13 connects the primary winding two ends of transformer B2 respectively.Reference signal unit 4 provides corresponding amplifying signal and switching signal for them in turn.
All switching tubes and amplifier tube all are example with the transistor among the present invention.They can also be arbitrary type pipe (voltage-controlled or Flow Control, common tube or power tubes etc.).Do inversion unit with common tube, can make general inverter.Do inversion unit with power tube, can do power converter.
The present invention proposes several filtering inversion units 2, inversion pipe base stage wherein all connects reference voltage unit 4.Different filtering inversion units 2 need the different reference voltage unit 4 of configuration.Reference voltage unit 4 is wanted and can be provided corresponding amplifying signal and switching signal for different pipes in turn in the different time according to the requirement of its filtering inversion unit 2.
The present invention all can carry out the filtering inversion to random waveform.In the time of need be to a certain waveform filtering inversion, as long as change the circuit structure of reference voltage unit 4, send needed pair of half-wave pulsation DC reference voltage signal, filtering inversion unit 2 will carry out the tracking filter inversion to supply power voltage by its reference voltage signal.
To a certain waveform filtering inversion the time, the input waveform of filtering inversion unit 2 is similar to the reference signal waveform of reference voltage unit 4.The input waveforms amplitude of filtering inversion unit 2 is slightly larger than the output waveform amplitude of filtering inversion unit 2, slightly most of inversion loss (being the filtering part) as filtering inversion unit 2.Output unit 3 can be resistance, sense, the arbitrary load of capacitive or comprehensive load, also can be arbitrary circuit, or even electrical network (when carrying out feed).
Linear active filtering inversion unit 2 is made up of a kind of emitter output circuit that has changed supply power mode.This circuit has the Voltage Feedback effect, power amplification effect, impedance conversion effect and voltage follow effect.It can make system have load characteristic and less waveform distortion preferably, and the output voltage of power stage can be provided for load.For conventional AC load, the linear active filtering inversion unit 2 of Fig. 3, Fig. 4 is hv filtering inverter circuits; The linear active filtering inversion unit 2 of Fig. 5, Fig. 6 is low-voltage filter inverter circuits.
Claims (6)
1, a kind of high-frequency single switch linear active filtering inverter, it comprises reference signal unit (4), inversion unit (2), output unit (3), high-frequency single switch converter unit (1); It is characterized in that: described inversion unit (2) is the linear active filtering inversion unit, and this linear active filtering inversion unit (2) is connected between high-frequency single switch converter unit (1) and the output unit (3); High-frequency single switch converter unit (1) is transformed to two half-wave pulsation DC with DC, the two half-waves pulsation of the little sawtooth of low frequency that linear active filtering inversion unit (2) is sent high-frequency single switch converter unit (1) here DC is as the power supply of this unit, the normal voltage that reference signal unit (4) is provided is as the reference voltage signal of this unit, and linear active filtering inversion unit (2) carries out supplying with output unit (3) after filter shape and the inversion to power supply by its reference voltage signal; High-frequency single switch converter unit (1) is made up of three links, and it comprises copped wave link (1-1), passive filtering link (1-2), controlling unit (1-3); Wherein copped wave link (1-1) is made of HF switch pipe (T1), HF switch pipe (T1) is transformed into the high-frequency pulsed width modulation ripple with DC, passive filtering link (1-2) is made of inductance L, sustained diode and capacitor C, the radio-frequency component of passive filtering link (1-2) energy filtering pulse width modulated wave is exported the two half-waves pulsation of the little sawtooth with a reference voltage waveform similarity DC; Its collector electrode of HF switch pipe (T1) connects the DC positive pole, emitter connects the negative pole of inductance (L) end and fly-wheel diode (D), another termination capacitor (C) of inductance (L) and linear active filtering inversion unit (2), electric capacity (C) and linear active filtering inversion unit (2) other end and the positive pole of fly-wheel diode (D) separately received the DC negative pole after joining, and the base stage of HF switch pipe (T1) connects controlling unit (1-3); Reference signal unit (4) is when providing the normal voltage signal for linear active filtering inversion unit (2), also with two half-wave pulsation DC with its waveform similarity, deliver in the high-frequency single switch management and control system link (1-3) of high-frequency single switch converter unit (1) and make reference voltage, the feedback signal that controlling unit (1-3) is sent back to by this reference voltage and output unit (3) is sent its relevant pulse width modulation signals and is controlled cut-offfing of high-frequency single switch pipe; The full-bridge that described linear active filtering inversion unit (2) is made up of two pairs of shape tubes amplifies inverter bridge and constitutes; The collector electrode of two first, second amplifier tubes of NPN type (T2), (T3) is connected to the positive pole of high-frequency single switch converter unit (1), their emitter connects the emitter of two positive-negative-positives the 4th, the 3rd amplifier tube (T5), (T4) respectively, and output unit (3) is connected between their emitter; Three, the collector electrode of the 4th amplifier tube (T4), (T5) and connect the negative pole of high-frequency single switch converter unit (1), the base stage of four amplifier tubes (T2), (T3), (T4), (T5) controls by reference signal unit (4).
2, a kind of high-frequency single switch linear active filtering inverter, it comprises reference signal unit (4), inversion unit (2), output unit (3), high-frequency single switch converter unit (1); It is characterized in that: described inversion unit (2) is the linear active filtering inversion unit, and this linear active filtering inversion unit (2) is connected between high-frequency single switch converter unit (1) and the output unit (3); High-frequency single switch converter unit (1) is transformed to two half-wave pulsation DC with DC, the two half-waves pulsation of the little sawtooth of low frequency that linear active filtering inversion unit (2) is sent high-frequency single switch converter unit (1) here DC is as the power supply of this unit, the normal voltage that reference signal unit (4) is provided is as the reference voltage signal of this unit, and linear active filtering inversion unit (2) carries out supplying with output unit (3) after filter shape and the inversion to power supply by its reference voltage signal; High-frequency single switch converter unit (1) is made up of three links, and it comprises copped wave link (1-1), passive filtering link (1-2), controlling unit (1-3); Wherein copped wave link (1-1) is made of HF switch pipe (T1), HF switch pipe (T1) is transformed into the high-frequency pulsed width modulation ripple with DC, passive filtering link (1-2) is made of inductance L, sustained diode and capacitor C, the radio-frequency component of passive filtering link (1-2) energy filtering pulse width modulated wave is exported the two half-waves pulsation of the little sawtooth with a reference voltage waveform similarity DC; Its collector electrode of HF switch pipe (T1) connects the DC positive pole, emitter connects the negative pole of inductance (L) end and fly-wheel diode (D), another termination capacitor (C) of inductance (L) and linear active filtering inversion unit (2), electric capacity (C) and linear active filtering inversion unit (2) other end and the positive pole of fly-wheel diode (D) separately received the DC negative pole after joining, and the base stage of HF switch pipe (T1) connects controlling unit (1-3); Reference signal unit (4) is when providing the normal voltage signal for linear active filtering inversion unit (2), also with two half-wave pulsation DC with its waveform similarity, deliver in the high-frequency single switch management and control system link (1-3) of high-frequency single switch converter unit (1) and make reference voltage, the feedback signal that controlling unit (1-3) is sent back to by this reference voltage and output unit (3) is sent its relevant pulse width modulation signals and is controlled cut-offfing of high-frequency single switch pipe; The full-bridge that described linear active filtering inversion unit (2) is made up of homotype four pipes amplifies inverter bridge and constitutes; Five, the collector electrode of the 6th amplifier tube (T6), (T7) is connected to the positive pole of high-frequency single switch converter unit (1), emitter connects the collector electrode of first, second switching tube (T8), (T9) respectively, output unit (3) is connected between the emitter of the 5th, the 6th amplifier tube (T6), (T7), and the emitter of first, second switching tube (T8), (T9) also connects the negative pole of high-frequency single switch converter unit (1); The base stage of four pipes (T6), (T7), (T8), (T9) controls by reference signal unit (4).
3, a kind of high-frequency single switch linear active filtering inverter, it comprises reference signal unit (4), inversion unit (2), output unit (3), high-frequency single switch converter unit (1); It is characterized in that: described inversion unit (2) is the linear active filtering inversion unit, and this linear active filtering inversion unit (2) is connected between high-frequency single switch converter unit (1) and the output unit (3); High-frequency single switch converter unit (1) is transformed to two half-wave pulsation DC with DC, the two half-waves pulsation of the little sawtooth of low frequency that linear active filtering inversion unit (2) is sent high-frequency single switch converter unit (1) here DC is as the power supply of this unit, the normal voltage that reference signal unit (4) is provided is as the reference voltage signal of this unit, and linear active filtering inversion unit (2) carries out supplying with output unit (3) after filter shape and the inversion to power supply by its reference voltage signal; High-frequency single switch converter unit (1) is made up of three links, and it comprises copped wave link (1-1), passive filtering link (1-2), controlling unit (1-3); Wherein copped wave link (1-1) is made of HF switch pipe (T1), HF switch pipe (T1) is transformed into the high-frequency pulsed width modulation ripple with DC, passive filtering link (1-2) is made of inductance L, sustained diode and capacitor C, the radio-frequency component of passive filtering link (1-2) energy filtering pulse width modulated wave is exported the two half-waves pulsation of the little sawtooth with a reference voltage waveform similarity DC; Its collector electrode of HF switch pipe (T1) connects the DC positive pole, emitter connects the negative pole of inductance (L) end and fly-wheel diode (D), another termination capacitor (C) of inductance (L) and linear active filtering inversion unit (2), electric capacity (C) and linear active filtering inversion unit (2) other end and the positive pole of fly-wheel diode (D) separately received the DC negative pole after joining, and the base stage of HF switch pipe (T1) connects controlling unit (1-3); Reference signal unit (4) is when providing the normal voltage signal for linear active filtering inversion unit (2), also with two half-wave pulsation DC with its waveform similarity, deliver in the high-frequency single switch management and control system link (1-3) of high-frequency single switch converter unit (1) and make reference voltage, the feedback signal that controlling unit (1-3) is sent back to by this reference voltage and output unit (3) is sent its relevant pulse width modulation signals and is controlled cut-offfing of high-frequency single switch pipe; The full-bridge that described linear active filtering inversion unit (2) is made up of two pairs of shape tubes amplifies inverter bridge and second transformer (B2) is formed; Two NPN types the 9th, the tenth amplifier tube (T12), (T13) collector electrode is connected to the positive pole of high-frequency single switch converter unit (1), their emitter connects two positive-negative-positives the 11 respectively, the 12 amplifier tube (T14), (T15) emitter, their emitter also connects the simple winding two ends of second transformer (B2) respectively, the 11, the 12 amplifier tube (T14), (T15) collector electrode is connected to the negative pole of high-frequency single switch converter unit (1), the secondary output unit (3) that connects of second transformer (B2), four amplifier tubes (T12), (T13), (T14), (T15) base stage controls by reference signal unit (4).
4, a kind of high-frequency single switch linear active filtering inverter, it comprises reference signal unit (4), inversion unit (2), output unit (3), high-frequency single switch converter unit (1); It is characterized in that: described inversion unit (2) is the linear active filtering inversion unit, and this linear active filtering inversion unit (2) is connected between high-frequency single switch converter unit (1) and the output unit (3); High-frequency single switch converter unit (1) is transformed to two half-wave pulsation DC with DC, the two half-waves pulsation of the little sawtooth of low frequency that linear active filtering inversion unit (2) is sent high-frequency single switch converter unit (1) here DC is as the power supply of this unit, the normal voltage that reference signal unit (4) is provided is as the reference voltage signal of this unit, and linear active filtering inversion unit (2) carries out supplying with output unit (3) after filter shape and the inversion to power supply by its reference voltage signal; High-frequency single switch converter unit (1) is made up of three links, and it comprises copped wave link (1-1), passive filtering link (1-2), controlling unit (1-3); Wherein copped wave link (1-1) is made of HF switch pipe (T1), HF switch pipe (T1) is transformed into the high-frequency pulsed width modulation ripple with DC, passive filtering link (1-2) is made of inductance L, sustained diode and capacitor C, the radio-frequency component of passive filtering link (1-2) energy filtering pulse width modulated wave is exported the two half-waves pulsation of the little sawtooth with a reference voltage waveform similarity DC; Its collector electrode of HF switch pipe (T1) connects the DC positive pole, emitter connects the negative pole of inductance (L) end and fly-wheel diode (D), another termination capacitor (C) of inductance (L) and linear active filtering inversion unit (2), electric capacity (C) and linear active filtering inversion unit (2) other end and the positive pole of fly-wheel diode (D) separately received the DC negative pole after joining, and the base stage of HF switch pipe (T1) connects controlling unit (1-3); Reference signal unit (4) is when providing the normal voltage signal for linear active filtering inversion unit (2), also with two half-wave pulsation DC with its waveform similarity, deliver in the high-frequency single switch management and control system link (1-3) of high-frequency single switch converter unit (1) and make reference voltage, the feedback signal that controlling unit (1-3) is sent back to by this reference voltage and output unit (3) is sent its relevant pulse width modulation signals and is controlled cut-offfing of high-frequency single switch pipe; The full-bridge that described linear active filtering inversion unit (2) is made up of homotype four pipes amplifies inverter bridge and second transformer (B2) is formed; The 13, the collector electrode of the 14 amplifier tube is connected to the positive pole of high-frequency single switch converter unit (1), their emitter connects the collector electrode of the 3rd, the 4th switching tube respectively, three, the emitter of the 4th switching tube is connected to the negative pole of high-frequency single switch converter unit (1), the 13, the emitter of the 14 amplifier tube connects the simple winding two ends of second transformer (B2) respectively, the secondary output unit (3) that connects of second transformer (B2), reference signal unit (4) provides corresponding amplifying signal and switching signal for them in turn.
5, according to claim 2 or 4 described a kind of high-frequency single switch linear active filtering inverters, it is characterized in that: homotype four pipes of the inverter bridge of described formation linear active filtering inversion unit (2) are NPN type pipe.
6, according to claim 2 or 4 described a kind of high-frequency single switch linear active filtering inverters, it is characterized in that: homotype four pipes of the inverter bridge of described formation linear active filtering inversion unit (2) are the positive-negative-positive pipe.
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| CNB2005100949652A CN100446397C (en) | 2005-10-24 | 2005-10-24 | High-frequency single switch-linear active filtering inverter |
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| CNB2005100949652A CN100446397C (en) | 2005-10-24 | 2005-10-24 | High-frequency single switch-linear active filtering inverter |
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| CN100446397C true CN100446397C (en) | 2008-12-24 |
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| JP2000032751A (en) * | 1998-07-13 | 2000-01-28 | Matsushita Electric Ind Co Ltd | Converter |
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| JPH08317638A (en) * | 1995-05-22 | 1996-11-29 | Hitachi Ltd | Power conversion apparatus |
| JP2000032751A (en) * | 1998-07-13 | 2000-01-28 | Matsushita Electric Ind Co Ltd | Converter |
| CN2370613Y (en) * | 1999-04-23 | 2000-03-22 | 北京自动化技术研究院 | Sine wave invertor |
| CN1381941A (en) * | 2001-04-19 | 2002-11-27 | 安徽工业大学 | Efficient linear active corrector |
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