CN108322061A - A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit - Google Patents

A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit Download PDF

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Publication number
CN108322061A
CN108322061A CN201810210502.5A CN201810210502A CN108322061A CN 108322061 A CN108322061 A CN 108322061A CN 201810210502 A CN201810210502 A CN 201810210502A CN 108322061 A CN108322061 A CN 108322061A
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CN
China
Prior art keywords
module
phase
temperature control
resistance furnace
conditioning unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810210502.5A
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Chinese (zh)
Inventor
刘培金
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHEN PU SUZHOU POWER EQUIPMENT FACTORY
Original Assignee
SHEN PU SUZHOU POWER EQUIPMENT FACTORY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHEN PU SUZHOU POWER EQUIPMENT FACTORY filed Critical SHEN PU SUZHOU POWER EQUIPMENT FACTORY
Priority to CN201810210502.5A priority Critical patent/CN108322061A/en
Publication of CN108322061A publication Critical patent/CN108322061A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/453Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/14Arrangements for reducing ripples from dc input or output
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion 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
    • H02M7/53Conversion 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 triode or transistor type requiring continuous application of a control signal
    • H02M7/537Conversion 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387Conversion 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871Conversion 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

The present invention relates to a kind of electrical power regulating devices to belong to industrial electro technical field of heating more particularly to a kind of industrial resistance furnace temperature control PCU Power Conditioning Unit.It is characterized in that, it include the three-phase bridge rectification module that three-phase main-frequency alternating current is converted into single-phase DC electricity, its output end bridges the flat wave module of direct current, the output end of the flat wave module of the direct current, the adjustable single-phase rectangular wave inverter output circuit of duty ratio being made of the adjustable rectangular wave inverter module of duty ratio and single-phase transformation isolation module with one are connected.It realizes to power grid without impact, no low-frequency disturbance;Utilization rate of electrical is high, energy conservation and environmental protection;Single-phase output, no three-phase imbalance phenomenon, without considering that threephase load balances, heating element parallel running, individual defects do not influence to produce;Linear power is adjusted, and temperature-controlled precision is high, is effectively improved product quality and is improved production efficiency, effectively reduces production maintenance cost.

Description

A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit
Technical field
The present invention relates to a kind of electrical power regulating devices, are filled more particularly to a kind of industrial resistance furnace temperature control power regulation It sets, belongs to industrial electro technical field of heating.
Background technology
The existing industrial resistance furnace temperature control PCU Power Conditioning Unit state of the art:
The mesh that electrical power realizes control temperature is adjusted by adjusting make-to-break ratio using solid-state relay or thyristor zero passage switch , in the manner, there is low-frequency disturbance to power grid, have impact to power grid, not energy band transformer load, adaptive load range is small, It can not meet the requirement of low-voltage and high-current load.This mode is only temperature is relatively low and temperature-controlled precision occasion of less demanding is adopted With;
Using silicon-controlled(Thyristor)Phase-shift voltage regulating mode is used to adjust electrical power to achieve the purpose that control temperature, this mode is Now generally by the way of.But in this mode, power factor (PF) is low, harmonic content is high, big to electric network pollution, it is desirable that three-phase equilibrium Load, heating element need to be connected in series with, and individual defects can lead to whole phase fault, it is necessary to shutdown maintenance, and be not isolated with power grid, Breakdown probability is high over the ground for heating element, thermal element short life;
High-power main frequency furnace transformer is equipped on the basis of in this, to realize that isolation and low-voltage and high-current are powered, using big Sectional area heating element, to extend the heating element service life, power factor (PF) is low, and harmonic content is high, big to electric network pollution, it is desirable that three-phase Balanced load, there are still and greatly improve equipment manufacturing costs, be only suitable for wanting the major part disadvantage such as thermal element tandem working Relatively high place is asked to use.
Invention content
The technical problem to be solved by the present invention is to provide a kind of industrial resistance furnace temperature control PCU Power Conditioning Units, to overcome existing skill The shortcomings that art, retains its advantage, to reach:1. realizing to power grid without impact, no low-frequency disturbance;2. input power factor is high, Harmonic content is low, and utilization rate of electrical is high, energy conservation and environmental protection;3. single-phase output, no three-phase imbalance phenomenon, without considering threephase load Balance, heating element parallel running, individual defects do not influence to produce;4. linear power is adjusted, temperature-controlled precision is high, effectively improves production Quality;4. transformer isolation exports, adaptive load range is wide, securely and reliably;5. substantially reducing equipment fault frequency, life is improved Efficiency is produced, production maintenance cost is effectively reduced.
In order to solve the above technical problems, one aspect of the present invention is:A kind of industrial resistance furnace temperature control is provided PCU Power Conditioning Unit, including:Three-phase main-frequency alternating current is converted into the three-phase bridge rectification module of single-phase DC electricity, direct current Ping Bomo Block, the adjustable rectangular wave inverter module of duty ratio and single-phase transformer isolation module, each function module are electrically connected successively, are realized Three-phase main-frequency alternating current is converted into the single-phase square wave ac of other frequencies and voltage, and by rectangular wave duty ratio Adjust the adjusting control realized to bearing power.
A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit, which is characterized in that including three-phase main-frequency alternating current to be converted into The three-phase bridge rectification module of single-phase DC electricity, output end bridge the flat wave module of direct current, the output of the flat wave module of the direct current End, the adjustable list of duty ratio being made of the adjustable rectangular wave inverter module of duty ratio and single-phase transformation isolation module with one Phase rectangular wave inverter output circuit is connected.
The three-phase main-frequency alternating current is the sine wave alternating current of three-phase 50HZ or 60HZ.
The flat wave module of the direct current is the metallic film capacitor of the different capabilities of two 800V voltage class.
The adjustable rectangular wave inverter module of the duty ratio includes:Power module IGBT is igbt mould Block and corresponding drive control unit.
The working frequency of the rectangular wave inverter module is between 150HZ-200HZ.
The single-phase transformation isolation module is:The single-phase transformer to match with reverse frequency 150-200HZ and voltage.
The drive control unit includes connecting the controller of temperature sensor, and be arranged according to temperature control, to duty Than the controller that adjustable rectangular wave inverter module exports control signal.
Beneficial effects of the present invention:1. realizing to power grid without impact, no low-frequency disturbance;2. input power factor is high, humorous Wave content is low, and utilization rate of electrical is high, energy conservation and environmental protection;3. single-phase output, no three-phase imbalance phenomenon, without considering that threephase load is flat Weighing apparatus, heating element parallel running, individual defects do not influence to produce;4. linear power is adjusted, temperature-controlled precision is high, effectively improves product Quality;4. transformer isolation exports, adaptive load range is wide, securely and reliably;5. substantially reducing equipment fault frequency, production is improved Efficiency effectively reduces production maintenance cost.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution in case study on implementation of the present invention The attached drawing used is briefly described.It should be evident that drawings in the following description are only some embodiments of the invention, it is right For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Its attached drawing, wherein:
Fig. 1 is the principle of the present invention block diagram;
Fig. 2 is the main circuit schematic diagram of the present invention.
Specific implementation mode
In embodiment, a kind of industrial resistance furnace temperature control PCU Power Conditioning Unit, which is characterized in that including exchanging three-phase main-frequency Electricity is converted into the three-phase bridge rectification module of single-phase DC electricity, and output end bridges the flat wave module of direct current, the direct current Ping Bomo The output end of block, the duty ratio being made of the adjustable rectangular wave inverter module of duty ratio and single-phase transformation isolation module with one Adjustable single-phase rectangular wave inverter output circuit is connected.
The three-phase main-frequency alternating current is the sine wave alternating current of three-phase 50HZ or 60HZ.
The flat wave module of the direct current is the metallic film capacitor of the different capabilities of two 800V voltage class.
The adjustable rectangular wave inverter module of the duty ratio includes:Power module IGBT is igbt mould Block and corresponding drive control unit.
The working frequency of the rectangular wave inverter module is between 150HZ-200HZ.
The single-phase transformation isolation module is:The single-phase transformer to match with reverse frequency 150-200HZ and voltage.
The drive control unit includes connecting the controller of temperature sensor, and be arranged according to temperature control, to duty Than the controller that adjustable rectangular wave inverter module exports control signal.The controller belongs to prior art range, this field skill Art personnel are known, repeat no more.
Ripple factor≤6% of the single-phase DC electricity of the three-phase bridge rectification output.It is described in a preferred embodiment Inverter module uses IGBT insulated gate bipolar transistors, and single-phase DC electricity is converted into single-phase square wave ac, described Square wave ac duty ratio is adjustable, and the frequency of the square wave ac is more than 50HZ and is less than 400HZ, usual 150HZ- Between 200HZ.
The technical solution in case of the present invention will be clearly and completely described below, it is clear that described embodiment Only it is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects It encloses.
- 2 are please referred to Fig.1, a kind of industrial resistance furnace temperature control power regulation is provided in one particular embodiment of the present invention Device, the industrial resistance furnace temperature PCU Power Conditioning Unit include:Three-phase main-frequency alternating current is converted into the three of single-phase DC electricity The flat wave module of phase bridge rectification module, direct current, the adjustable rectangular wave inverter module of duty ratio and single-phase transformation isolation module.It is above-mentioned It is electrically connected successively between module.It realizes and three-phase main-frequency alternating current is converted into and loads other frequencies and voltage to match Single-phase square wave ac, and by realizing the power regulation to load to the adjusting of rectangular wave duty ratio.
In a specific embodiment, including:Three-phase main-frequency alternating current is converted into the three-phase bridge rectification of single-phase DC electricity The flat wave module of module, direct current, inversion IGBT insulated gate bipolar transistor modules(Including full-bridge inverting or semi-bridge inversion), and Voltage isolation module, ripple factor≤6% of the high voltage direct current.
Flat wave module is provided between control rectifier bridge and IGBT inverter bridges, the output of IGBT inverter bridges is connected with single-phase transformation Device, single-phase transformer secondary direct power to the load to provide the adjustable square wave ac of duty ratio to load.
General 50HZ≤the f of reverse frequency f≤400HZ of the inverter module kind, usually 150HZ-200HZ, provides What it is to load is usually the adjustable 150HZ-200HZ square wave acs of duty ratio.
Preferably, using low saturation voltage drop low-loss and insulating grid bipolar transistor IGBT, using PMW pulse width modulation power tune Section technology, using newest electron electric power control technology, concrete scheme is as follows:
Three-phase main-frequency AC power is input to three-phase bridge commutating module first, and flat wave capacitor is arranged in the direct current of rectification output, This direct current is converted into the single-phase DC electricity of ripple factor≤6%, then passes through inverter module IGBT(Igbt) Inversion is converted into(Full-bridge or half-bridge)The adjustable single-phase square wave ac of 150HZ-200HZ power duty cycles, then by this rectangle Alternating current wave is powered to the load by single-phase isolating transformer, and the duty ratio by adjusting this square wave ac is realized to negative Carry the adjusting control of power.
Therefore, the present invention has the following advantages:
1. realizing to power grid without impact, no low-frequency disturbance;2. input power factor is high, harmonic content is low, and utilization rate of electrical is high, Energy conservation and environmental protection;3. single-phase output, no three-phase imbalance phenomenon, without considering that threephase load balances, heating element parallel running is a Not damaging not influences to produce;4. linear power is adjusted, temperature-controlled precision is high, effectively improves product quality;4. transformer isolation exports, Adaptive load range is wide, securely and reliably;5. substantially reducing equipment fault frequency, production efficiency is improved, production maintenance is effectively reduced Cost.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks Domain is included within the scope of the present invention.

Claims (6)

1. a kind of industrial resistance furnace temperature control PCU Power Conditioning Unit, which is characterized in that including three-phase main-frequency alternating current is converted into list The three-phase bridge rectification module of phase direct current, the output end bridging flat wave module of direct current, the output end of the flat wave module of the direct current, The adjustable single-phase square of duty ratio being made of the adjustable rectangular wave inverter module of duty ratio and single-phase transformation isolation module with one Shape wave inverter output circuit is connected.
2. industrial resistance furnace temperature control PCU Power Conditioning Unit according to claim 1, which is characterized in that the flat wave of the direct current Module is the metallic film capacitor of the different capabilities of two 800V voltage class.
3. industrial resistance furnace temperature control PCU Power Conditioning Unit according to claim 1, which is characterized in that the duty ratio can The rectangular wave inverter module of tune includes:Power module IGBT is insulated gate bipolar transistor module and corresponding drive control list Member.
4. industrial resistance furnace temperature control PCU Power Conditioning Unit according to claim 1, which is characterized in that the rectangular wave is inverse Become the working frequency of module between 150HZ-200HZ.
5. industrial resistance furnace temperature control PCU Power Conditioning Unit according to claim 1, which is characterized in that the single-phase transformation Isolation module is:The single-phase transformer to match with reverse frequency 150-200HZ and voltage.
6. industrial resistance furnace temperature control PCU Power Conditioning Unit according to claim 3, which is characterized in that the drive control Unit includes connecting the controller of temperature sensor, and be arranged according to temperature control, to the adjustable rectangular wave inverter module of duty ratio The controller of output control signal.
CN201810210502.5A 2018-03-14 2018-03-14 A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit Pending CN108322061A (en)

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Application Number Priority Date Filing Date Title
CN201810210502.5A CN108322061A (en) 2018-03-14 2018-03-14 A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109039096A (en) * 2018-08-29 2018-12-18 浙江双驰电气科技有限公司 A kind of concrete pump power supply using electrolytic capacitor energy storage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101127490A (en) * 2006-03-21 2008-02-20 上海恒精机电设备有限公司 A high power transistor frequency conversion power supply
CN104852609A (en) * 2015-05-18 2015-08-19 苏州市申浦电源设备厂 Industrial resistance furnace temperature control power adjustment device
CN207939407U (en) * 2018-03-14 2018-10-02 苏州市申浦电源设备厂 A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101127490A (en) * 2006-03-21 2008-02-20 上海恒精机电设备有限公司 A high power transistor frequency conversion power supply
CN104852609A (en) * 2015-05-18 2015-08-19 苏州市申浦电源设备厂 Industrial resistance furnace temperature control power adjustment device
CN207939407U (en) * 2018-03-14 2018-10-02 苏州市申浦电源设备厂 A kind of industrial resistance furnace temperature control PCU Power Conditioning Unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109039096A (en) * 2018-08-29 2018-12-18 浙江双驰电气科技有限公司 A kind of concrete pump power supply using electrolytic capacitor energy storage

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