CN203313070U

CN203313070U - PWM rectification modules and power supply formed through integration of PWM rectification modules

Info

Publication number: CN203313070U
Application number: CN2013201616505U
Authority: CN
Inventors: 薛建仁
Original assignee: Individual
Current assignee: Qingdao Haizhidian New Energy Co ltd
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2013-11-27
Anticipated expiration: 2023-04-03

Abstract

The utility model relates to PWM rectification modules and a power supply formed through integration of the PWM rectification modules. Disclosed is a novel power supply formed through integration of the PWM rectification modules. The power supply is formed through integration of the plurality of small-power PWM rectification modules. The DC output end sides of the PWM rectification modules output current after being connected in series or in parallel. The grid sides of the PWM rectification modules of the power supply are connected with a power grid through a multi-winding output transformer. Each winding output of the transformer is connected with one or more PWM rectification power modules and the input side of the transformer is connected with the power grid. The rectification power supply has the excellent properties that current at the grid side is sine wave and a power factor at the grid side is close to 1 and at the same time has the advantages of stable voltage and rapid dynamic response, which other rectification power supplies do not have.

Description

PWM rectification module and PWM rectification module integrated power supply

Technical field

The utility model relates to rectifier power source, is mainly used in field, especially the new PWM rectification module integrated power supplies such as DC driven power supply of desalinization, salt chemical engineering, electrolysis, plating, electrophoresis and subway.

Background technology

The existing rectifier power source that is applied to the industrial circles such as desalinization, salt chemical engineering, electrolysis, plating and electrophoresis is: the industrial rectifying devices such as diode rectification, the direct rectification of thyristor, AC/DC high frequency electric source and synchronous rectifier, the net side power factor of these rectifying devices is low, harmonic content is high, to electrical network, has caused a large amount of energy wastes.

For solving side harmonics content height and the low problem of power factor, people have done a lot of effort at aspects such as harmonic wave inhibition and reactive power compensations, a lot of achievements have also been obtained, but there is no basic head it off, reason is that all controlled rectification circuits form with thyristor and continue to use phased approach, also just can't eliminate and produce harmonic wave and idle root.

Summary of the invention

The utility model purpose is: propose new PWM rectification module integrated power supply, its current on line side be sine wave, and net side power factor, close to 1 excellent properties, has advantages of that simultaneously voltage stabilization and dynamic response wait other rectifier power sources to possess soon.

The purpose of this utility model is achieved in that new PWM rectification module integrated power supply is integrated into a large power supply by a plurality of small-power PWM rectification modules, the net side of its PWM rectification module is connected with electrical network by transformer, and PWM rectification module direct current outlet side is by the in parallel or rear output of series connection.

In the utility model: the net side of PWM rectification module connects by the transformer electrical network, its transformer is the transformer of the output of winding more than, each output winding of transformer is connected with the net side of one or more PWM rectification modules, and the input side of transformer connects electrical network.

In the utility model: many windings output transformer is a kind of many arteries and veins phase shifting transformer.

In the utility model: three-phase half-bridge or three phase full bridge power circuit unit that the PWM rectification module consists of full control power device, the power driving circuit unit, voltage on line side and current sampling and conditioning unit, the voltage and current sample of signal of direct current outlet side and conditioning unit, DSP control loop unit and net side inductance form; The sampled signal of the voltage and current of net side, the voltage and current sampled signal of output, be connected with DSP control circuit unit respectively through conditioning unit; The drive level signal of DSP control circuit unit output, through the isolation of driver element circuit level and conversion, be connected with the power circuit unit; Its electric network source is connected with the power circuit unit by net side inductance.

In the utility model: the power circuit unit of PWM rectification module forms three-phase half-bridge or three phase full bridge by full control power device, and its DC output end connects load, forms thus VSR voltage type PWM rectification module.

In the utility model: the power circuit unit of PWM rectification module forms three-phase half-bridge or three phase full bridge by full control power device, its DC output end connects load through inductance, its net side inductance connects the power circuit termination filter capacitor, forms thus CSR current mode PWM rectification module.

In the utility model: the full control power device that the power circuit unit of PWM rectification module adopts is IGBT or metal-oxide-semiconductor device, and each IGBT of its VSR voltage type PWM rectifier power source or the source electrode of metal-oxide-semiconductor and drain electrode are parallel with back-biased diode.

In the utility model: the full control power device that the power circuit unit of PWM rectification module adopts is IGBT or metal-oxide-semiconductor device, and each IGBT of its CSR current mode PWM rectifier power source or the source electrode of metal-oxide-semiconductor and drain electrode loop are serially connected with forward biased diode.

In the utility model: the full control power device that the power circuit unit of PWM rectification module adopts is GTO or IGCT device.

In PWM rectification module of the present utility model: in the loop of its direct current output and load, be serially connected with IGBT chopper circuit unit, by the copped wave control signal, control the output pulse width of copped wave pipe IGBT, realize controlling the size of output voltage or electric current.

The utility model has the advantage of: the ac-side current of this PWM rectification module integrated power supply is for sinusoidal wave, power factor is near 1, harmonic wave is little, the advantages such as fast response time, fundamentally solved conventional rectifier efficiency low and to the problem of electric network pollution, be energy-efficient green power supply truly, can realize that this product enforcement reduces discharging and is of great importance industry energy conservation; Adopting many arteries and veins phase shifting transformer not only can meet different voltage and isolation needs, adopt the set of many arteries and veins phase-shifting commutation and PWM rectification, further improved efficiency simultaneously and reduced harmonic wave, is a kind of progress of modern commutation technique.

The accompanying drawing explanation

Fig. 1 is the schematic diagram of the PWM rectification module integrated power supply of output-parallel;

Fig. 2 is the schematic diagram of the PWM rectification module integrated power supply of output series connection;

Fig. 3 is PWM rectification module schematic diagram;

Fig. 4 is the power circuit unit of the IGBT full bridge structure of VSR type PWM rectification module;

Fig. 5 is the power circuit unit of the IGBT half-bridge structure of VSR type PWM rectification module;

Fig. 6 is the power circuit unit of the IGBT half-bridge structure of CSR type PWM rectification module;

Fig. 7 is the power circuit unit of the GTO half-bridge structure of CSR type PWM rectification module;

Fig. 8 is the rectification module of output voltage tune from zero.

Embodiment

Fig. 1 is an embodiment that multimode is integrated of the present utility model, in figure, TRF is many arteries and veins power transformer, X1, X2 and XN are rectifier power supply module, by more than one rectifier power supply module parallel connection, be the rectifier power source that output current is larger as required, CONT is integrated control unit, TO X1, TOX2 and TO XN are the module integration control signal, for the operating state of monitoring and control module.

Fig. 2 is the integrated embodiment of another multimode of the present utility model, in figure, TRF is many arteries and veins power transformer, X1, X2 and XN are rectifier power supply module, by more than one rectifier power supply module series connection, be the rectifier power source that output voltage is higher as required, CONT is integrated control unit, TO X1, TO X2 and TO XN are the module integration control signal, for the operating state of monitoring and control module.

Fig. 3 is PWM rectification module schematic diagram, in figure, BR is the power circuit unit, A1 alternating voltage and current signal collection and conditioning unit, A2 direct voltage and current signal collection and conditioning unit, TR are IBGT power driving circuit unit, and DSP is the control circuit unit, AC is the net electricity, L is net side inductance, and C1 is filter capacitor, and R is load resistance.V1 and I1 are respectively alternating voltage and current signal, V2 and I2 direct current outlet side voltage and current signal, RA is the output signal of TR power driving circuit unit, SA is the full control power device triggering level signal of DSP unit output, GA is the signal that interchange collection and conditioning unit A1 output to the DSP unit, and the collection of DA direct current and conditioning unit A2 output to the signal of DSP unit; Its course of work is by DSP, to drive signal according to the full control of algorithm output power device according to GA and DA electric quantity signal.

Fig. 4 is the power circuit unit of the IGBT full bridge structure of VSR type PWM rectification module, in figure, TRF is power transformer, LA, LB and LC are net side inductance, HA, HB and HC are controlled the single-phase H bridge of power device entirely, DR is the power driving circuit unit, AA alternating current-direct current electric weight signal condition unit, and DSP is control unit, C1 filter capacitor, R are load resistance; TO/HA is the driving signal of A phase bridge, and TO/HB is the driving signal of B phase bridge, and TO/HC is the driving signal of C phase bridge; The TO/DSP1 signal of DSP unit is connected with the DSP1 of power drive unit DR, and the TO/DSP2 electric quantity acquisition of DSP unit is connected with the DSP2 of conditioning unit AA, and K/P connects external keyboard and display, and TOCOM connects external communication module and administrative unit in parallel; VD/CD is direct voltage and current signal, and VA/CAA, VB/CB and VC/CC are net side three-phase alternating voltage and current signal; Three phase full bridge PWM rectification module, be on DC bus, to connect three independent single-phase full bridge VSR that control, and when unbalanced power supply, can not have a strong impact on the performance of pwm converter, and the control performance while having avoided three phase network uneven worsens and fault.

Fig. 5 is the IGBT half-bridge structure power circuit unit schematic diagram of VSR type PWM rectification module, and in figure, TRF is power transformer, and LA, LB and LC are net side inductance, and C1 is filter capacitor, and R is load resistance, and it exports direct load.

Fig. 6 is the IGBT half-bridge structure power circuit unit schematic diagram of CSR type PWM rectification module, and in figure, TRF is power transformer, and LA, LB and LC are net side inductance, C2, C3 and C4 are filter capacitor, L1 is outputting inductance, and R is load resistance, and direct current output connects load via inductance L 1.

Fig. 7 is the GTO half-bridge structure power circuit unit schematic diagram of CSR type PWM rectification module, and in figure, TRF is power transformer, and LA, LB and LC are net side inductance, C2, C3 and C4 are filter capacitor, L1 is outputting inductance, and R is load resistance, and direct current output connects load via inductance L 1.

Fig. 8 is the rectification module of output voltage tune from zero, empty frame XY is the PWM rectification module, in the loop of its direct current output and load, is serially connected with IGBT chopper circuit unit, by the copped wave control signal, control the pulsewidth of IGBT copped wave pipe, control the size of output voltage or electric current.

Although the utility model with preferred embodiment openly as above; but embodiment and accompanying drawing be not limit of the present utility model; based on this any extension and variation; in the spirit and scope that do not break away from the utility model; from working as, can make various changes or retouch; equally within protection range of the present utility model, thus protection scope of the present invention should with the application claim was defined is as the criterion.

Claims

1. new PWM rectification module integrated power supply, its technical characteristics is: this PWM rectification module integrated power supply is integrated into a large power supply by a plurality of small-power PWM rectification modules, the net side of its PWM rectification module is connected with electrical network by transformer, and PWM rectification module direct current outlet side is by the in parallel or rear output of series connection.

2. new PWM rectification module integrated power supply as claimed in claim 1, its technical characterictic is: the net side of PWM rectification module connects by the transformer electrical network, its transformer is the transformer of the output of winding more than, each output winding of transformer is connected with the net side of one or more PWM rectification modules, and the input side of transformer connects electrical network.

3. new PWM rectification module integrated power supply as claimed in claim 1, its technical characterictic is: many windings output transformer of employing is a kind of many arteries and veins phase shifting transformer.

4. new PWM rectification module, technical characterictic is: three-phase half-bridge or three phase full bridge power circuit unit that the PWM rectification module consists of full control power device, the power driving circuit unit, voltage on line side and current sampling and conditioning unit, the voltage and current sample of signal of direct current outlet side and conditioning unit, DSP control loop unit and net side inductance form; The sampled signal of the voltage and current of net side, the voltage and current sampled signal of output, be connected with DSP control circuit unit respectively through conditioning unit; The drive level signal of DSP control circuit unit output, through the isolation of driver element circuit level and conversion, be connected with the power circuit unit; Its electric network source is connected with the power circuit unit by net side inductance.

5. PWM rectification module as claimed in claim 4, the technical characterictic of its PWM rectification module is: the power circuit unit of PWM rectification module forms three-phase half-bridge or three phase full bridge by full control power device, its DC output end connects load, forms thus VSR voltage type PWM rectification module.

6. PWM rectification module as claimed in claim 4, the technical characterictic of its PWM rectification module is: the power circuit unit of PWM rectification module forms three-phase half-bridge or three phase full bridge by full control power device, its DC output end connects load through inductance, its net side inductance connects the power circuit termination filter capacitor, forms thus CSR current mode PWM rectification module.

7. PWM rectification module as claimed in claim 4, the technical characterictic of its PWM rectification module is: the full control power device that the power circuit unit of PWM rectification module adopts is IGBT or metal-oxide-semiconductor device, and each IGBT of its VSR voltage type PWM rectifier power source or the source electrode of metal-oxide-semiconductor and drain electrode are parallel with back-biased diode.

8. PWM rectification module as claimed in claim 4, the technical characterictic of its PWM rectification module is: the full control power device that the power circuit unit of PWM rectification module adopts is IGBT or metal-oxide-semiconductor device, and each IGBT of its CSR current mode PWM rectifier power source or the source electrode of metal-oxide-semiconductor and drain electrode loop are serially connected with forward biased diode.

9. PWM rectification module as claimed in claim 4, the technical characterictic of its PWM rectification module is: the full control power device that the power circuit unit of PWM rectification module adopts is GTO or IGCT device.

10. one kind as claim 4 or 5 or 6 or 7 or 8 or 9 described PWM rectification modules, its technical characterictic is: in the loop of its direct current output and load, be serially connected with IGBT chopper circuit unit, by the copped wave control signal, control the output pulse width of copped wave pipe IGBT, realize controlling the size of output voltage or electric current.