CN212486397U - Two-level driving device based on real-time simulation controller - Google Patents

Abstract

The utility model provides a two level drive device based on real-time simulation controller, include: the processing board is provided with a conditioning circuit, and the conditioning circuit is used for conditioning an input pulse width modulation signal; the driving board is connected with the processing board, a driving module and a power module are arranged on the driving board, the driving module is used for boosting the pulse width modulation signals after conditioning, and the power module is used for inverting the pulse width modulation signals after boosting and generating variable current signals and/or variable voltage signals; the maximum driving current of the driving module is 2.5A; the maximum switching frequency of the power module is 20 KHZ. The utility model discloses a two level drive device based on real-time simulation controller simple structure has higher switching frequency and higher drive current, and makes the user can carry out the secondary development based on real-time simulation controller, can solve the problem that the unsatisfied technical requirement of current driver.

Description

Two-level driving device based on real-time simulation controller

Technical Field

The utility model belongs to the technical field of power, power electron, especially, relate to a two level drive arrangement based on real-time simulation controller.

Background

At present, the mainstream drivers adopt a digital Signal processor (dsp), (digital Signal processing)/arm (advanced RISC machine)/fpga (field Programmable Gate array) as a control core, which can realize a relatively complex control algorithm, and realize digitization, networking and intelligence. The Power device generally adopts a driving circuit which is designed by taking an intelligent Power module IPM (intelligent Power module) as a core, the IPM is internally integrated with the driving circuit and is provided with fault detection protection circuits such as overvoltage, overcurrent, overheat and undervoltage, and a soft start circuit is added in a main loop so as to reduce the impact of a starting process on a driver. The power driving unit firstly rectifies input three-phase power or commercial power through a three-phase full-bridge rectification circuit to obtain corresponding direct current; the rectified three-phase power or commercial power is converted by a three-phase sine PWM (pulse Width modulation) voltage inverter to drive a three-phase permanent magnet synchronous alternating current servo motor, the whole process of the power driving unit can be simply referred to as an alternating current-direct current-alternating current rectification inversion (AC-DC-AC) process, and then the single motor is controlled.

The following technical requirements are generally applied to the driver: 1. input power supply requirements: 3, alternating current is 0-380V;

2. inversion requirements: the AC-DC-AC rectification inversion function and the DC-AC inversion function are supported; 3. sampling requirement: bus voltage sampling, output current sampling and temperature sampling; 4. protection claims are as follows: and the output current is subjected to overcurrent, bus overvoltage, overtemperature and overload protection.

However, the existing driver has a plurality of technical problems: 1. the input power supply has single requirement; 2. the number of sampling paths is extremely small; 3. the topological structure is single and not universal, and cannot meet the requirements of common customers; 4. the DSP/ARM/FPGA program is solidified, and the user can not carry out secondary development. Therefore, it is urgently required to develop a new driver which meets the requirements of the prior art.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a two level drive device based on real-time simulation controller to solve the problem that current driver does not satisfy technical requirement.

In order to solve the above technical problem, an aspect of the present invention provides a two-level driving device based on a real-time simulation controller, including:

the processing board is provided with a conditioning circuit, and the conditioning circuit is used for conditioning an input pulse width modulation signal;

the driving board is connected with the processing board, a driving module and a power module are arranged on the driving board, the driving module is used for boosting the pulse width modulation signal after conditioning, and the power module is used for inverting the pulse width modulation signal after boosting and generating a variable current signal and/or a variable voltage signal;

wherein the maximum driving current of the driving module is 2.5A;

the maximum switching frequency of the power module is 20 KHZ.

According to an embodiment of the present invention, the driving module includes a driving chip, and the model of the driving chip is ACPL-332J.

According to the utility model discloses a further embodiment, drive module still include with the push-pull circuit that driver chip is connected, push-pull circuit is used for to the pulse width modulation signal that driver chip received carries out push-pull and steps up the processing.

According to another embodiment of the present invention, the driving module includes two push-pull circuits.

According to the utility model discloses a further embodiment, the direct current side main circuit structure of drive plate is for handing over-directly-handing over structure or directly-handing over structure, the topological structure that the contravariant side of drive plate adopted is single-phase half-bridge, single-phase full-bridge, two-level three-phase half-bridge, two-level three-phase full-bridge, five-level three-phase half-bridge, five-level three-phase full-bridge, three-phase three-leg and the four bridge arms in three-phase arbitrary one of arm.

According to another embodiment of the present invention, the power module is an inflight PIM module.

According to the utility model discloses a further embodiment, still be equipped with the sampling module on the drive plate, the sampling module includes 4 way voltage sampling and 5 way current samplings.

According to the utility model discloses a further embodiment, two level drive arrangement based on real-time simulation controller still includes the electromagnetic compatibility board, the electromagnetic compatibility board respectively with the drive plate with the processing board is connected.

According to the utility model discloses a further embodiment, two level drive device based on real-time simulation controller still includes the keysets, it passes through to handle the board the keysets is connected with real-time simulation controller.

On the other hand, the embodiment of the utility model provides a still provides a driving system, including the aforesaid two level drive device based on real-time simulation controller and with the equipment of treating that two level drive device based on real-time simulation controller connects.

The utility model has the advantages that:

the utility model discloses pulse width modulation signal of input among the two level drive device based on real-time simulation controller handles the back and sends the drive module on the drive plate to the conditioning circuit of processing board and steps up and send into power module again after presetting the voltage value and carry out the contravariant and handle, produces changeable current-voltage signal after power module's processing to be used for controlling and treat the drive device. In addition, in the embodiment, the maximum driving current of the driving module is 2.5A, and the maximum switching frequency of the power module is 20 KHZ. Therefore, the utility model discloses two level drive arrangement based on real-time simulation controller simple structure have higher switching frequency and higher drive current, and make the user can carry out the secondary development based on real-time simulation controller, can solve the problem that current driver does not satisfy technical requirement.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic block diagram of one embodiment of a two-level driving apparatus based on a real-time simulation controller of the present invention;

FIG. 2 is a schematic block diagram of one embodiment of a drive plate of a two-level drive arrangement based on a real-time emulation controller of the present invention;

fig. 3 is a three-phase half-bridge main circuit structure diagram of an embodiment of a driving board of a two-level driving device based on a real-time simulation controller according to the present invention;

fig. 4 is a schematic block diagram of another embodiment of a two-level driving apparatus based on a real-time simulation controller according to the present invention;

fig. 5 is a topological structure diagram of an embodiment of the electromagnetic compatibility board of the two-level driving apparatus based on the real-time simulation controller of the present invention;

fig. 6 is a topological circuit diagram of an embodiment of the bus capacitor plate of the two-level driving apparatus based on the real-time simulation controller of the present invention;

fig. 7 is a schematic block diagram of one embodiment of a drive system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a two-level driving apparatus 100 based on a real-time simulation controller, including:

the processing device comprises a processing board 1, wherein a conditioning circuit 10 is arranged on the processing board 1, and the conditioning circuit 10 is used for conditioning an input pulse width modulation signal (PWM);

the driving board 2 is connected with the processing board 1, a driving module 20 and a power module 21 are arranged on the driving board 2, the driving module 20 is used for boosting the pulse width modulation signals after conditioning, and the power module 21 is used for inverting the pulse width modulation signals after boosting and generating variable current signals and/or variable voltage signals;

wherein, the maximum driving current of the driving module 20 is 2.5A;

the maximum switching frequency of the power module 21 is 20 KHZ.

The utility model discloses pulse width modulation signal of input among the two level drive device based on real-time simulation controller handles the back and sends the drive module on the drive plate to the conditioning circuit of processing board and steps up and send into power module again after presetting the voltage value and carry out the contravariant and handle, produces changeable current-voltage signal after power module's processing to be used for controlling and treat the drive device. In addition, in the embodiment, the maximum driving current of the driving module is 2.5A, and the maximum switching frequency of the power module is 20 KHZ. Therefore, the utility model discloses two level drive arrangement based on real-time simulation controller simple structure have higher switching frequency and higher drive current, and make the user can carry out the secondary development based on real-time simulation controller, can solve the problem that current driver does not satisfy technical requirement.

In some implementations, the driver module 20 of the present invention includes a driver chip 201, and the driver chip 201 has a model of ACPL-332J. The driving chip, namely the driving optocoupler, is ACPL-332J in the embodiment, and the chip has the following advantages: supporting pulse signals above 1000 KHZ; excellent common mode transient suppression (CMTI) up to 100 kV/. mu.s, which avoids false gate driver failures in noisy environments; rail-to-rail output currents of up to 5A are supported, thus eliminating the need for output buffer circuitry; the integrated fault safety IGBT and MOSFET diagnosis, protection and fault reporting functions are provided; providing minimal propagation delay and excellent timing skew. The high peak output current and wide operating voltage range of the chip eliminates the need for output buffer circuits, enabling designers to implement cost-effective gate driver solutions for motor drivers and power inverters.

In some implementations, referring to fig. 2, the driving module 20 of the embodiment of the present invention further includes a push-pull circuit 202 connected to the driving chip 201, and the push-pull circuit 202 is configured to perform a push-pull boosting process on the pulse width modulation signal received by the driving chip 201. The driving circuit in the embodiment uses a push-pull circuit, which has the advantages that: in a general push-pull circuit, such as an output stage, the circuit operates to amplify an input signal; the circuit operation is completed, but generally, the push-pull circuit uses the same-order elements (transistors or electronic tubes) to realize the alternate conduction of the output stage elements, two signals with equal magnitude and opposite phases must be excited, namely, the problem of phase inversion is solved, the circuit for phase inversion can be completed, and an inductance element (transformer) can be used without increasing the complexity and the reliability of the circuit. The complementary circuit overcomes the above-described problems with unipolar elements. When the circuit works, the bipolar elements are conducted in turn, so that an inverter can be omitted or the circuit can be simplified, and the stability of the circuit can be correspondingly improved. For example, when the input signal is positive, the PNP transistor in the bipolar transistor is turned on, and the PNP transistor is turned off due to the polarity thereof, and when the input signal is negative, the PNP transistor is turned on, and the NPN transistor is turned off. The circuit can be automatically switched on and off to complete the circuit operation regardless of the change of the signal. The push-pull circuit has simple structure and high utilization rate of the magnetic core of the switch transformer, and when the push-pull circuit works, only one of the two symmetrical power switch tubes is conducted at a time, so that the conduction loss is small.

In some implementations, referring to fig. 2, the driving board 2 of the embodiment of the present invention further includes a driving power supply 22, and the model of the driving power supply 22 is: QA 151M. The QA151M is used as the driving power supply in the embodiment, and the power supply has the advantages that: the power conversion efficiency is high and reaches 83%; the isolation voltage is 6000VDC, the ultra-small isolation capacitor is 3.5pF, and the short-circuit protection can be continued; the power module is internally connected with a common mode after two paths of independent outputs are adopted, energy can be better provided for the on and off of the power module, and meanwhile, the power module has output short circuit protection and self-recovery capability.

In some embodiments, the drive module of embodiments of the present invention includes a two-way push-pull circuit. In the embodiment, the power module drive adopts two paths of double-path push-pull circuits for current expansion, and can realize the drive capability of up to 4A with smaller temperature rise by matching with an excellent heat dissipation design.

In some implementations, the power module 21 of embodiments of the present invention is an infill PIM module. In the embodiment, the power module IGBT is completely of the first worldwide Infineon brand, the maximum bearing voltage is 1200V, the current is selected according to the power grade, and the switching frequency of the IGBT is as high as 20 KHZ.

The two-level driving device based on the real-time simulation controller can be used for driving a three-phase four-bridge arm, and mainly realizes AC-DC-AC inversion function, temperature sampling, 4-path output current sampling, 3-path output voltage sampling, 1-path bus current sampling and 8-path PWM push-pull boosting to 15V output; the control of a three-phase motor and a three-phase four-bridge arm power grid can be realized; the driving chip ACPL-332J which is newly introduced by AVAGO company of high Anghua is used, the driving chip has high performance, the driving current reaches 2.5A, and the driving chip has the characteristics of power supply under-voltage and short-circuit protection functions and the like, and the driving power supply QA151M of Jinshengyang company simultaneously uses a push-pull circuit to enable a power module to have higher switching frequency, so that the output current of the two-level driving device is controlled to be more vivid sine wave waveforms, and the motor control effect is better.

In some implementations, the dc side main circuit structure of the driving board 2 of the embodiment of the present invention is an ac-dc-ac structure or a dc-ac structure, and the topology structure adopted by the inverter side of the driving board is any one of a single-phase half bridge, a single-phase full bridge, a two-level three-phase half bridge, a two-level three-phase full bridge, a five-level three-phase half bridge, a five-level three-phase full bridge, a three-phase three-leg bridge, and a three-phase four-leg bridge. The two-level driving device based on the real-time simulation controller of the embodiment can support various topologies.

In some implementations, as shown in fig. 2, the utility model discloses still be equipped with sampling module 23 on the drive plate 2 of embodiment, sampling module 23 includes 3 way load voltage sampling, 4 way load current sampling, 3 way voltage sampling that go into the net, 4 way current sampling that go into the net, and the multichannel encoder sampling, 3 way digital input sampling and 3 way digital output sampling. The two-level driving device of the embodiment has more and richer sampling signal paths.

The driving board of the embodiment of the utility model is also provided with a signal level conversion module, a weak current signal isolation module,

The device comprises a buffer relay module, a rectifying module, a bus capacitor filtering module, a bus voltage-sharing module, a braking module, a multi-path power supply module, an active Miller clamping module, a power module short-circuit protection module and the like.

To sum up, the utility model discloses drive plate main function includes:

1. converting the weak-current digital signal into an analog signal, conditioning and amplifying the analog signal, and transmitting the analog signal to a controlled object;

2. the power frequency alternating current power supply or the direct current power supply is inverted into alternating current power supplies with various frequencies and is supplied to a controlled object, so that the power conversion function of the power supply is realized, and the functions of regulating voltage, frequency, current, speed and the like are further realized;

3. the power device generally adopts a driving circuit which is designed by taking intelligent power modules IPM, PIM, IGBT and silicon carbide SIC as cores, but the IPM is internally integrated with the driving circuit and is also provided with fault detection protection circuits such as overvoltage, overcurrent, overheat and undervoltage, and a soft start circuit or a buffer circuit is also designed in a main loop to reduce the impact of the starting process on a driver so as to prevent the instantaneous current from being overlarge and the bus capacitor from forming short circuit to cause explosion; the power driving unit firstly rectifies input three-phase power or commercial power through a three-phase full-bridge uncontrolled rectifying circuit to obtain corresponding direct current, and then controls a controlled object through a three-phase sine PWM voltage type inverter, wherein the whole process of the power driving unit can be simply referred to as an AC-DC-AC process; the main topological circuit of the rectifying unit (AC-DC) is a three-phase full-bridge uncontrolled rectifying circuit;

4. the main circuit on the direct current side of the driving plate adopts an alternating current-direct current-alternating current structure AC-DC-AC and a direct current-alternating current structure DC-AC; the inverter side of the driving plate can adopt a three-phase half bridge, which is shown in figure 3;

5. multiple input voltage levels are supported: the method comprises the following steps of inputting 220V/three-phase 380V alternating current and inputting 0-600V direct current;

6. the supported power level: rated output power (current): 2KW, 15KW, 30KW, 55KW, and the like;

7. a variety of topologies are supported: single-phase full bridge, two-level three-phase half bridge three-bridge arm and four-bridge arm, two-level three-phase full bridge and other topological structures;

8. the IGBT of the power module adopts a global first brand Yingfei PIM module, the maximum bearing voltage is 1200V, the current is selected and matched according to the power grade, and the switching frequency is as high as 20 KHZ;

9. the bus voltage supports a rated direct current voltage DC600V, and the maximum voltage is 720V (overvoltage threshold);

10. the overload capacity currently supports 3 times of overload (overload time is 1 second) at most;

11. voltage sampling module (4 paths total): the sampling (optional) of phase voltage and line voltage is supported, the bus voltage is 1 path, and the output voltage of the driving plate is 3 paths; the precision is 0.5%, the response time is less than 40us, and the frequency is 200 Hz;

12. current sampling module (total 5 paths): 1 bus current path, 4 driving board output currents; the precision is 0.5%, the response time is less than 1us, and the frequency is 100 KHz;

13. and (4) protection function: bus overvoltage, driver output current overcurrent, over-temperature protection, braking function and the like;

14. the driving chip of the power module adopts AVAGO brand, and has the characteristics of high performance, driving current reaching 2.5A, power supply under-voltage and short-circuit protection functions and the like;

15. the DCDC power supply module adopts a MORNSUN brand, and has the characteristics of small ripple, low noise, low heat emission and the like of an output power supply;

16. the Hall voltage/current sensor adopts ZX brand, and can accurately measure direct current, alternating current, pulse and various voltage/current with irregular waveform under the condition of electrical isolation;

17. the protection circuit is formed by DQ triggers newly promoted by TI brand, and has the characteristics of sensitive response, low power consumption and the like.

18. Various motor controls are supported: alternating current asynchronous/synchronous motors, permanent magnet synchronous motors, alternating current servo motors, direct current brushless/brushed motors, alternating current/direct current linear motors, custom motors, and the like; the method is widely applied to the fields of new energy automobiles, motor support aligning systems, servo industrial control and the like;

19. and grid connection control is supported: the single-phase grid-connected inversion function and the three-phase grid-connected inversion function are realized; the method is widely applied to the fields of wind power, photovoltaics, energy storage systems, UPS systems, active filtering, harmonic suppression, reactive compensation, three-phase imbalance and the like.

20. The circuit board is designed by adopting 6 layers, and has the characteristics of strong anti-interference capability, high signal reliability, strong EMC electromagnetic compatibility function and the like.

The embodiment of the utility model provides an in the main function of processing board is to take care of signals such as the electric current that gathers, voltage, encoder, in time handles fault protection and fault reset, functions such as indirect control digital input output signal.

The processing board comprises a plurality of modules, specifically:

1. conditioning circuitry, i.e. sampling signal conditioning modules (voltage, current, temperature, etc.):

the Hall voltage/current sensor adopts ZX brand, and can accurately measure direct current, alternating current, pulse and various voltage/current with irregular waveform under the condition of electrical isolation;

voltage sampling module (total 10 paths): the bus voltage is 1 path, the driver outputs 3 paths of voltage, the network access voltage is 3 paths, and the load voltage is 3 paths; the precision is 0.5%, the response time is less than 40us, and the frequency is 200 Hz;

current sampling module (13 paths in total): 1 bus current, 4 driver output currents, 4 network access currents and 4 load currents; the precision is 0.5%, the response time is less than 1us, and the frequency is 100 KHz;

2. digital input module DI: 3-path high-speed isolation input (bidirectional) with maximum frequency of 50 KHZ;

3. digital output module DO: 3 paths of high-speed isolated output, the maximum frequency of 50KHZ, the current of 3A/AC250V and the current of 1A/DC 30V;

4. multi-channel power supply module (3.3V, 5V, +15V, -15V, 24V):

the precision and the linear voltage stabilization degree are 1 percent; the MORSUN brand is adopted, and the power supply has the characteristics of small ripple, small noise, low heat emission and the like of an output power supply;

5. encoder acquisition module and signal conditioning module:

multiple encoder types are supported: single-ended/differential incremental (5V/24V), absolute, rotary, hall, grating scale encoders, etc.; support encoder digital/analog signal output, support high resolution/precision encoders (such as 2500 lines/3600 lines/5000 lines, etc.);

6. protection module (overvoltage, overcurrent, overtemperature, etc.):

the protection circuit formed by the LM293 comparator and a DQ trigger newly promoted by a TI brand has the characteristics of sensitive response, low power consumption and the like, and has the functions of bus overvoltage, driver output current overcurrent, over-temperature protection, braking and the like;

7. a fault reset module:

the reset circuit adopts a protection circuit formed by DQ triggers newly promoted by TI brand, has the characteristics of sensitive response, low power consumption and the like,

8. 4 pairs of complementary PWM signal outputs are supported.

9. The circuit board is designed by adopting 6 layers, and has the characteristics of strong anti-interference capability, high signal reliability, strong EMC electromagnetic compatibility function and the like.

In some implementations, referring to fig. 4, the two-level driving apparatus 100 of the embodiment of the present invention further includes an electromagnetic compatibility board 3, and the electromagnetic compatibility board 3 is connected to the driving board 2 and the processing board 1 respectively.

The EMC main functions of the electromagnetic compatibility board in this embodiment are:

1. the method is mainly used for reducing and inhibiting the electromagnetic interference generated by the driver and meeting the European standard EN61000 level standard;

2. the EMC electromagnetic compatibility board topological structure can be used as a single L filter and a one-stage LC and two-stage LC filter, and is shown in figure 5;

3. technical parameters of the EMC electromagnetic compatibility board:

1) rated input voltage: three-phase AC 0-380V;

2) rated output voltage: three-phase AC 0-380V;

3) rated output power (current): 15KW (25A);

4) device configuration: the device comprises an X safety capacitor, a Y safety capacitor, a piezoresistor, a discharge tube and a common mode inductor;

5) inductance L parameter: 20 mH;

6) the working frequency is as follows: 50/60 Hz;

7) temperature range: -25 ℃ to +85 ℃;

8) temperature rise: < 30 ℃;

9) and (3) withstand voltage test: 1 minute;

10) line-to-line SURGE voltage: 2 KV;

11) line-ground SURGE voltage: 2 KV;

12) line-to-line burst EFT voltage: 4 KV;

13) line-to-line burst EFT voltage: 4 KV;

14) the circuit board is designed by adopting 6 layers, and has the characteristics of strong anti-interference capability, high signal reliability, strong EMC electromagnetic compatibility function and the like.

In some implementations, referring to fig. 4, the two-level driving apparatus 100 based on the real-time simulation controller according to the embodiment of the present invention further includes an adapter plate 4, and the processing board 1 is connected to the real-time simulation controller through the adapter plate 4.

In some implementations, referring to fig. 4, the two-level driving apparatus 100 based on the real-time simulation controller according to the embodiment of the present invention further includes a bus capacitor board 5, and the bus capacitor board 5 is connected to the processing board 1 and the driving board 2 respectively.

The main functions of the bus capacitor board in this embodiment are:

1. in an open-source driver, an alternating current power supply or a direct current power supply is used as an input power supply and is connected to an inversion side of the driver through a direct current bus, and because an inversion bridge obtains an effective value or a high-peak pulse current from a bus capacitor, a high-pulse voltage peak is generated on a bus branch, so that the inversion bridge is difficult to bear the high-peak voltage peak, and a bus capacitor plate is required to be selected for smoothing and filtering and then output to the inversion bridge;

2. when the IGBT switch of the power tube is switched on, the bus voltage can be smooth, so that the bus voltage of the driver is kept stable;

3. inductance parameters of the IGBT of the power tube are reduced to the minimum as possible, and the peak voltage of a bus is weakened;

4. absorbing high pulse current on a bus capacitor of the driver;

5. the influence of the inverter bridge overcharge voltage and the instantaneous voltage on the driver is prevented;

6. a voltage equalizing circuit is added to prevent the driver from exploding due to the unbalanced voltage at the upper end and the lower end of a bus capacitor when the driver fails;

7. the bus voltage initial charging circuit is designed, a current-limiting resistor is connected in series in a charging loop before bus voltage is stabilized and built up, and the current-limiting resistor is removed after the voltage is stabilized, so that the phenomenon that electrolytic capacitance on a direct current bus is large, the capacitor voltage cannot suddenly change, the capacitor current can suddenly change, R =0, the charging time t =0, the charging current is large, and the short circuit, the burning of a rectifier bridge and a power supply are equivalent to be avoided.

8. Technical parameters of the bus capacitor plate:

a. rated input voltage: DC600V, max 720V;

b. rated input current: 60A;

c. the capacitance parameter is as follows: a single capacitor 450V, 1500 UF; sampling in a serial-parallel connection mode for capacity expansion, and supporting at most four groups;

d. configuring a safety capacitor: y capacitance (capacitance value 4700 pF); a thin film capacitor;

e. temperature range: -25 to 85;

f. temperature rise: less than 30;

g. parameters of voltage-sharing resistance: 2KV high-voltage resistor with resistance value of 150K, and performing resistance value expansion in a sampling series-parallel connection mode;

h. the circuit board is designed by adopting 6 layers, and has the characteristics of strong anti-interference capability, high signal reliability, strong EMC electromagnetic compatibility function and the like.

On the other hand, referring to fig. 7, the embodiment of the present invention further provides a driving system, which includes the above-mentioned two-level driving apparatus 100 based on the real-time simulation controller and a device 200 to be driven connected to the two-level driving apparatus 100 based on the real-time simulation controller.

Referring to fig. 7, the driving system in this embodiment further includes a controller 300, wherein the controller 300 may be a real-time simulation controller.

The driving system in this embodiment is applied to various motor control occasions and power grid control, for example:

1. steel: rolling mill, roller way, fan, pump, crane, buggy ladle, converter tilting, etc.;

2. steel rolling and line making: wire drawing machine, winding machine, blower, pump, hoisting machine, fixed length shearing, automatic feeding, etc.;

3. electric power: a blower for a boiler drum, a feed pump, a centrifugal mixer, a conveyor belt, a water raising power station, a flywheel and the like;

4. petroleum: oil transfer pump, electric submersible pump, water injection pump, oil pumping unit, etc. 5. Paper making industry: paper machines, pumps, mills, fans, blenders, blowers, and the like.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.

Claims (10)

1. A two-level driving apparatus based on a real-time simulation controller, comprising:

the processing board is provided with a conditioning circuit, and the conditioning circuit is used for conditioning an input pulse width modulation signal;

the driving board is connected with the processing board, a driving module and a power module are arranged on the driving board, the driving module is used for boosting the pulse width modulation signal after conditioning, and the power module is used for inverting the pulse width modulation signal after boosting and generating a variable current signal and/or a variable voltage signal;

wherein the maximum driving current of the driving module is 2.5A;

the maximum switching frequency of the power module is 20 KHZ.

2. The two-level driving apparatus based on real-time simulation controller of claim 1, wherein the driving module comprises a driving chip, and the model of the driving chip is ACPL-332J.

3. The two-level driving apparatus based on real-time simulation controller as claimed in claim 2, wherein the driving module further comprises a push-pull circuit connected to the driving chip, and the push-pull circuit is configured to perform a push-pull boost process on the pulse width modulation signal received by the driving chip.

4. The two-level driving apparatus based on real-time simulation controller of claim 3, wherein the driving module comprises a two-way push-pull circuit.

5. The two-level driving apparatus based on the real-time simulation controller according to claim 1, wherein the main circuit structure of the dc side of the driving board is an ac-dc-ac structure or a dc-ac structure, and the topology structure adopted by the inverter side of the driving board is any one of a single-phase half-bridge, a single-phase full-bridge, a two-level three-phase half-bridge, a two-level three-phase full-bridge, a five-level three-phase half-bridge, a five-level three-phase full-bridge, a three-phase three-leg and a three-phase four-leg.

6. The real-time simulation controller based two-level driver of claim 1, wherein the power module is an English-flying PIM module.

7. The two-level driving device based on the real-time simulation controller according to any one of claims 1 to 6, wherein a sampling module is further provided on the driving board, and the sampling module comprises 4 voltage samples and 5 current samples.

8. The real-time simulation controller based two-level driving apparatus according to any one of claims 1 to 6, further comprising an electromagnetic compatibility board, wherein the electromagnetic compatibility board is connected to the driving board and the processing board respectively.

9. The real-time simulation controller based two-level driving apparatus according to any one of claims 1 to 6, further comprising an adapter board, wherein the processing board is connected with the real-time simulation controller through the adapter board.

10. A drive system comprising a two-level drive apparatus based on a real-time simulation controller according to any of claims 1 to 9, further comprising a device to be driven connected to the two-level drive apparatus based on a real-time simulation controller.

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