CN2657283Y - Soft starting intelligent controller for electric machine - Google Patents
Soft starting intelligent controller for electric machine Download PDFInfo
- Publication number
- CN2657283Y CN2657283Y CN 200320115680 CN200320115680U CN2657283Y CN 2657283 Y CN2657283 Y CN 2657283Y CN 200320115680 CN200320115680 CN 200320115680 CN 200320115680 U CN200320115680 U CN 200320115680U CN 2657283 Y CN2657283 Y CN 2657283Y
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- CN
- China
- Prior art keywords
- motor
- controller
- dsp controller
- output
- dsp
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- 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.)
- Expired - Lifetime
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- Motor And Converter Starters (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The utility model relates to a motor soft-start intelligent controller which consists of a DSP controller and a controlled silicon module which can control the start of the motor, and characterized in that an input terminal of voltage and current signal processing circuit is used to receive voltage and current sampled signals inputting by three phase current, while the output terminal of which is connected with the input terminal of the ADC (module and digital converting circuit) which is arranged in the DSP controller, and the output terminal of the pulse duration modulation PWM of the DSP controller is connected with the trigger circuit of the controlled silicon module. Because the utility model adopts the universal microprocessor CPU combining with the DSP (digital signal processing) to control the start of the motor, thereby, the utility model realizes smooth start, stopping and protection of the three phase machine, and fast on-site compensation to the electric fence and absorption of harmonic waves. The utility model can also make a cluster control to the local area network of the motor system by network, thus the aim of improving the quality of the electric fence, saving energy and increasing the service life of the motor is achieved.
Description
Technical field
The utility model belongs to a kind of motor control assembly, is a kind of soft starter for motor intelligent controller specifically.
Background technology
At present many about the device of soft starter for motor; but its function ratio is more single; can not solve existing many defectives when electric motor starting; big as function imperfection, Circuits System harmonic wave, can't realize smoothly startup of electrode, multiple protective, communication networking are suppressed the network system harmonic wave simultaneously, can not satisfy the demand of multinomial function such as the raising quality of power supply simultaneously.
Summary of the invention
The purpose of this utility model is to utilize its operational capability of DSP (digital signal processor) can reach 2400MIPS, it has jumbo on-chip memory and large-scale addressability, general microprocessor CPU and DSP are united use, and a kind of soft start, reactive power compensation and filtering of the current collection machine soft starter for motor intelligent controller in one is provided, to overcome above-mentioned deficiency.
To achieve these goals, the utility model is made of the silicon controlled module KG of dsp controller and control electric motor starting, wherein the input of the major loop of silicon controlled module KG meets three-phase alternating current input AC, major loop output connects motor D J, be characterized in: the voltage and current sampled signal of the input acceptance of a voltage and current signal conditioning circuit V/I from three-phase alternating current input AC arranged, the input of the ADC (mould/number conversion circuit) that its output is built-in with dsp controller is connected, and the pulse width modulation output PWM of dsp controller is connected with the circuits for triggering of silicon controlled module KG;
Also be connected with an isolated drive circuit GL between the pulse width modulation output PWM of above-mentioned dsp controller and the circuits for triggering of silicon controlled module KG;
Be connected with an overcurrent, overvoltage crowbar BH between I/O output of above-mentioned dsp controller and the major loop output of silicon controlled module KG;
An I/O output of above-mentioned dsp controller is connected with a capacitance compensation unit C control device;
An I/O output of above-mentioned dsp controller is connected with a filter unit L switching control device;
The input of above-mentioned voltage and current signal conditioning circuit V/I also is connected with the voltage and current sampled signal of the major loop output of silicon controlled module KG.
Because the utility model adopts general microprocessor CPU and DSP (digital signal processor) to unite use; startup with the control motor; make that the utility model can be according to the technological requirement of motor, the variation of electrical network load and the multiple function that will realize; the choose reasonable system is provided with and parameter; realization to the level and smooth startup of three phase electric machine, stop and protecting; to the quick local compensation of electric system electrical network, absorb the network system harmonic wave simultaneously.The utility model can also be by the team control of networking realization to the electric system local area network (LAN), adopt optimal control policy to realize control to the speed Control and the running optimum operation efficient of motor, thus reach reduce the motor torque ripple, improve power grid quality (suppress harmonic wave, reduce to start impact), energy savings and the purpose in raising motor useful life to electrical network.
Description of drawings
Accompanying drawing is a structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The utility model is by voltage and current feedback signal conditioning circuit V/I, dsp controller, PWM isolated drive circuit GL, silicon controlled module KG, capacitance compensation unit C, filter unit L and attached protective circuit formations such as (overcurrent, overvoltage crowbar BH).
Described voltage and current feedback signal conditioning circuit V/I mainly contains accurate voltage, current transformer, and amplifier, analog switch and comparator constitute.Its function is that the sampled signal with two road voltages, one road current signal is transformed into 0～+ 5 volt of analog signal, and this analog signal is delivered to the built-in A/D of dsp controller (mould/number) transducer ADC, produces three simultaneously and passes by zero detection signal; Described dsp controller comprises TMS320F240, I/O interface circuit, keyboard and display interface circuit, communication interface circuit (RS485 or RS232) and JTAG emulation interface; Described PWM isolated drive circuit mainly is made of zero cross fired SSR, RC absorption network, piezo-resistance, (microprocessor CPU is according to detected signal by certain relation by six road pwm pulses, by the processing of plug-in, send pulse signal) three bidirectional triode thyristor conductings of driving; Described silicon controlled module KG mainly is made of three bidirectional triode thyristors (two one-way SCR reverse parallel connections); Mainly by the capacitor bank (as 8421 or 4321 codings) of the different capabilities of forming by certain coding, dsp controller is according to the capacitor of the needs control switching respective volume of electrical network for described capacitance compensation unit C; Described filter unit L mainly is made of the reactor of multichannel different capabilities, and dsp controller is according to the harmonic analysis in the electrical network, and the reactor of respective volume is connected in control, to suppress corresponding harmonic components; Described attached protective circuit mainly constitutes (GPF (General Protection False that is used for motor) by temperature sensor, power transfer relay and bypass relay etc.
The content of not describing in detail in the above-mentioned specification of the present utility model belongs to this area professional and technical personnel's known systems.
Claims (6)
1, a kind of soft starter for motor intelligent controller, silicon controlled module (KG) by dsp controller and control electric motor starting constitutes, wherein the input of the major loop of silicon controlled module (KG) connects three-phase alternating current input (AC), major loop output connects motor (DJ), it is characterized in that: the voltage and current sampled signal of the input acceptance of a voltage and current signal conditioning circuit (V/I) from three-phase alternating current input (AC) arranged, the input of ADC mould/number conversion circuit that its output and dsp controller are built-in is connected, and the pulse width modulation output PWM of dsp controller is connected with the circuits for triggering of silicon controlled module KG.
2, soft starter for motor intelligent controller as claimed in claim 1 is characterized in that: also be connected with an isolated drive circuit (GL) between the circuits for triggering of the pulse width modulation output PWM of dsp controller and silicon controlled module (KG).
3, soft starter for motor intelligent controller as claimed in claim 1 is characterized in that: be connected with an overcurrent, overvoltage crowbar (BH) between the I/O output of dsp controller and the major loop output of silicon controlled module (KG).
4, soft starter for motor intelligent controller as claimed in claim 1 is characterized in that: an I/O output of dsp controller is connected with a capacitance compensation unit (C) control device.
5, soft starter for motor intelligent controller as claimed in claim 1 is characterized in that: an I/O output of dsp controller is connected with a filter unit (L) switching control device.
6, soft starter for motor intelligent controller as claimed in claim 1 is characterized in that: the input of voltage and current signal conditioning circuit V/I also is connected with the voltage and current sampled signal of the major loop output of silicon controlled module KG.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115680 CN2657283Y (en) | 2003-10-30 | 2003-10-30 | Soft starting intelligent controller for electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115680 CN2657283Y (en) | 2003-10-30 | 2003-10-30 | Soft starting intelligent controller for electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657283Y true CN2657283Y (en) | 2004-11-17 |
Family
ID=34345988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320115680 Expired - Lifetime CN2657283Y (en) | 2003-10-30 | 2003-10-30 | Soft starting intelligent controller for electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657283Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386821A (en) * | 2011-11-17 | 2012-03-21 | 许瑞敏 | DC motor torque controller |
-
2003
- 2003-10-30 CN CN 200320115680 patent/CN2657283Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386821A (en) * | 2011-11-17 | 2012-03-21 | 许瑞敏 | DC motor torque controller |
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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 |
Expiration termination date: 20131030 Granted publication date: 20041117 |