CN201504221U - Variable frequency control system of motor - Google Patents
Variable frequency control system of motor Download PDFInfo
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- CN201504221U CN201504221U CN2009202094205U CN200920209420U CN201504221U CN 201504221 U CN201504221 U CN 201504221U CN 2009202094205 U CN2009202094205 U CN 2009202094205U CN 200920209420 U CN200920209420 U CN 200920209420U CN 201504221 U CN201504221 U CN 201504221U
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Abstract
The utility model discloses a variable frequency control system of a motor, which comprises a power supply driving and sensing circuit and a control circuit, wherein the control circuit is connected with the power supply driving and sensing circuit; the variable frequency control system comprises a singlechip microcomputer with a CAN controller, a waveform generator, an analog switch, an IGBT optocoupler isolation driver, a first interface adaptive circuit, a second interface adaptive circuit, an NOR gate and a reverse Schmitt trigger; the singlechip microcomputer with the CAN controller is respectively connected with the waveform generator and the analog switch; the waveform generator is respectively connected with the analog switch, the first interface adaptive circuit or the NOR gate; the analog switch is connected with the first interface adaptive circuit; and an output terminal of the first interface adaptive circuit is connected with an input terminal of the IGBT optocoupler isolation driver, and the IGBT optocoupler isolation driver is connected with the second interface adaptive circuit. The variable frequency control system of the motor is characterized by good effect of the driving and regenerative charging unit of the control system, simple circuit design, complete functions, high performance-cost ratio, high reliability, simple programming and debugging and the like.
Description
Technical field
The utility model belongs to machine field, relates to a kind of motor frequency conversion control system.
Background technology
Existing frequency conversion system adopts dsp chip to finish waveform generation function usually, and is all the more so as the automobile-used frequency conversion system of BSG motor.And the greatest problem of using this mode is the programming difficulty, and workload is big, and this becomes the major technology bottleneck in the hybrid power exploitation that needs put goods on the market fast.Having BSG machine operation system that the charging modes of storage battery is generally all needed to finish with another group system again, in this case, is worthless to the product to cost sensitivity as vehicle obviously.
The utility model content
Technical problem to be solved in the utility model is: a kind of motor frequency conversion control system is provided.
For solving the problems of the technologies described above, the utility model adopts following technical scheme.
A kind of motor frequency conversion control system comprises power drives sensing circuit and control circuit; Described control circuit links to each other with the power drives sensing circuit, comprising: band CAN controller single-chip microcomputer, waveform generator, analog switch, IGBT light-coupled isolation driver, the first interface adapter circuit, the second interface adapter circuit, NOR gate, and reverse this schmitt trigger; Described band CAN controller single-chip microcomputer links to each other with waveform generator, analog switch respectively; Described waveform generator links to each other with analog switch, the first interface adapter circuit, NOR gate respectively; Described analog switch links to each other with the first interface adapter circuit; The output of the described first interface adapter circuit links to each other with the input of described IGBT light-coupled isolation driver, and IGBT light-coupled isolation output end of driver links to each other with the input of the second interface adapter circuit.
As a kind of preferred version of the present utility model, described power drives sensing circuit comprises power storage battery group, the vehicle operation storage battery, solid-state relay, voltage detecting change-over circuit, harmonic wave suppresses circuit, intelligence IGBT power model, current sense and treatment circuit, R phase timing generator circuit, BSG motor, and speed probe process chip; Wherein, power storage battery group is in order to directly to provide electric power to intelligent IGBT power model; The vehicle operation storage battery is powered to solid-state relay by Switching Power Supply; After solid-state relay was connected, many group output Switching Power Supplies powered on, and begin to provide the system works power supply; The voltage detecting change-over circuit is the acceptable voltage of single-chip microcomputer in order to the high voltage of conversion power storage battery group; It is in parallel with intelligent IGBT power model that harmonic wave suppresses circuit, the electromagnetic interference that occurs during in order to absorption BSG machine operation; Intelligence IGBT power model, output SPWM pulse is in order to drive the BSG motor and to absorb BSG motor electric energy; Current sense and treatment circuit are given CPU in order to the waveform of transition detection electric current; R phase timing generator circuit is in order to produce the zero-crossing pulse signal, and the control motor effectively charges to storage battery when generating state; Be provided with speed and temperature sensor in the BSG motor; The speed probe process chip converts 8 bit data to and gives CPU in order to handle the tach signal from velocity transducer.
As another kind of preferred version of the present utility model, the output signal of the R of described waveform generator (B), B (B), Y (B) pin links to each other with IGBT light-coupled isolation driver through the first interface adapter circuit, again via exporting at Q2, Q4, Q6 port after the second interface adapter circuit decoupling; The output signal of the R of waveform generator (T), B (T), Y (T) pin is exported by 2,4,9 output ports of analog switch after 1,3, the 8 input ports input of analog switch, give IGBT optocoupler drive circuit through the first interface adapter circuit again, at last by exporting at Q1, Q3, Q5 port after the second interface adapter circuit decoupling.
The P0.0-P0.7 port of band CAN controller single-chip microcomputer links to each other with the AD0-AD7 port of waveform generator, as 8 bit data mouths; Band CAN controller single-chip microcomputer
The corresponding port of P3.2/INT0, P3.0, P3.1 port and waveform generator
ALE links to each other;
Port TXDC, the RXDC of band CAN controller single-chip microcomputer link to each other with CAN director port CTXD, CRXD, are used for the CAN system communication;
The P1.0 port of band CAN controller single-chip microcomputer receives the battery capacity signal SOC from the voltage detecting change-over circuit, the P1.1-P1.3 port receives current sensing signal IR, IB, the IY from current sense and treatment circuit, in order to realize the control to the battery electric quantity and the output current of system; P3.3/INT1 pin and described the R output port of timing generator circuit mutually link to each other; The P1.6 port links to each other with 5,6,13 ports of analog switch; P1.4, P1.5 port link to each other with WSS, the ZPP O/PS port of waveform generator.
As another preferred version of the present utility model, the input port 2,3,4,5 of NOR gate receives from IGBT light-coupled isolation driver respectively
The fault-signal of port, electric current and temperature over-range index signal after oppositely this schmitt trigger is handled from intelligent IGBT power model, from the temperature sensor of BSG motor after oppositely this schmitt trigger is handled the temperature over-range signal and from the electric current of current sense and the treatment circuit signal that transfinites.
As another preferred version of the present utility model, described waveform generator is a three-phase SPWM generator.
The beneficial effects of the utility model are: the utility model is based on single-chip microcomputer and waveform generator design, its driving and refresh charging unit are respond well, and have characteristics such as circuit design is simple, multiple functional, cost performance is high, reliability is high, detail programming is easy, shortened the construction cycle to a great extent.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a system block diagram of the present utility model;
Fig. 2 is power drives sensing circuit figure of the present utility model;
Fig. 3 is the interface circuit schematic diagram of control circuit of the present utility model;
Fig. 4 is BSG motor frequency conversion device working model figure;
Fig. 5 is the charge cycle schematic diagram;
Fig. 6 is a voltage tuning waveform schematic diagram;
Fig. 7 is the drive current waveform schematic diagram;
Fig. 8 is a waveform generator chip schematic diagram;
Fig. 9 is a waveform generator internal structure schematic diagram;
Figure 10 is a waveform occurring principle schematic diagram;
Figure 11 is the block diagram of writing a program of waveform generator;
Figure 12 is the interface circuit figure of waveform generator and single-chip microcomputer;
Figure 13 is parallel connection type hybrid power system bus structures schematic diagrames;
Figure 14 is a BSG machine operation flow chart;
Figure 15 is a CAN Communications service flow chart;
Figure 16 is an AT89C51CC01S internal circuit block diagram.
The primary clustering symbol description:
1, power storage battery group; 2, vehicle operation storage battery;
3, solid-state relay; 4, Switching Power Supply;
5, voltage detecting change-over circuit; 6, many group output Switching Power Supplies;
7, harmonic wave suppresses circuit; 8, IGBT module;
9, current sense and treatment circuit; 10, R phase timing generator circuit;
11, BSG motor; 12, speed probe process chip.
Embodiment
[BSG motor]
BSG (Belt-altermotor Starter Generator) and belt transmission rise/the power failure machine, are applicable to the hybrid vehicle of parallel way.As for his utilization, because the energy storage device finite capacity, this just need effectively manage power flow in running, requires the operating efficiency of frequency converter (inverter) enough high simultaneously; Be accurate electric energy management and inverter converts usefulness efficiently, can prolong the vehicle operating mileage, reduce the battery charge frequency, thereby fundamentally save operating cost.
Fig. 4 is the simplified model of BSG machine operation.Suppose: if first constantly allow T1 and T4 conducting, electric current is gone into motor by T1 and R linear flow, goes into ground from B line and T4; Next allows T3 and T6 conducting constantly, and electric current is gone into motor by T3 and B linear flow, goes into ground from Y line and T6; Next allows T5 and T2 conducting constantly again, and electric current is gone into motor by T5 and Y linear flow, goes into ground from R line and T2; Thereby the formation rotating magnetic field is rotated the BSG motor.
Should, the diode among Fig. 4 (fly-wheel diode) was provided with in order to solve the inductive load self induction electromotive force originally.But because the existence of this diode in the charging of generating state to storage battery, has brought benefit for the BSG motor, it can make our circuit design bring simplification at least.Be that we can utilize it, allow odd number insulated gate bipolar transistor (Insulated Gate Bipolar Transisitor, IGBT) power model T
2n-1(n=1,2,3) monolateral ending, and even number power model T
2n(n=1,2,3) form the loop by the down requirement circulation conducting of corresponding frequecy characteristic of BSG rotating speed, and then the electricity that goes out of electric power generation just can pass through even number power model T
2nWith the diode pair battery charge.Fig. 5 is the charge cycle schematic diagram, and the intensity of charging can be passed through program mode (PM), realizes by changing output voltage (duty ratio) mode; The sequential of noting tuning pulse this moment must polarize, and can realize effectively charging.
(1) voltage waveform
Fig. 6 is the conventional at present output voltage waveforms that uses under the dsp chip control, and carrier wave is for uniformly-spaced being provided with; By changing the mode of duty ratio, form the sinusoidal wave pulse of equivalence.
(2) current waveform
Fig. 7 is actual drive current waveform.Linear out-of-flatness is because pulsed mode is followed the high order harmonic component of appearance among the figure, and the position that this harmonic wave occurs is always relevant with carrier wave and fundamental frequency.
(3) relation of carrier wave and intelligent IGBT power model
IGBT is ambipolar driven power model, is high-speed switching devices, though be present comparatively desirable power device, but still time-delay when inevitably existing conducting and the current tail when turn-offing; The existence of switch time-delay and current tail means loss, if carrier frequency is too high, will increase the loss of power; Can be on the other hand, high carrier frequency not only can obtain comparatively ideal sine wave, and can reduce high order harmonic component and machine operation noise.
[SA2828 waveform generator chip]
The SPWM control technology is by the control circuit break-make of control switch pipe according to certain rules, and the not wide rectangular pulse waveform and make it approach the sinusoidal voltage waveform to obtain one group of constant amplitude is seen Fig. 6 and Figure 10.Its method has two kinds of analogy method and digital methods, the circuit more complicated of analogy method wherein, and have temperature to float phenomenon, and can influence precision, reduce the performance of system.Digital method then is to calculate each switching point and deposit it in internal memory with computer according to different mathematical models, then by tabling look-up and necessary calculating generates the SPWM ripple, so digital method influenced by internal memory bigger, and and system accuracy between exist contradiction.And use SA2828 is totally digitilized three-phase SPWM generator, its wide frequency range, precision height, and can carry out interface with microprocessor; Key is to finish peripheral controlled function, thereby can realize intellectuality.
(1) SA2828 characteristic functions and structural principle
SA2828 adopts 28 pin DIP and SOIC encapsulation, its pin arrangements such as internal structure such as Fig. 8 and shown in Figure 9.Main pin has two classes, and a class is interface and the control pin with microprocessor; Another kind of is SPWM pulse output and control pin.AD0～AD7 is eight bit address and data multiplex bus, is used for accepting address and data message from microprocessor.
Three pins of ALE (AS) are INTEL (MOTOROLA) control model, and SA2828 the time can adapt to INTEL or MOTOROLA control model automatically in work, and as ALE (AS) when pin becomes high level, the inner testing circuit of SA2828 will latch automatically
State on the line.If testing result is a low level, then adopt the MOTOROLA control model; If testing result is a high level, then adopt the INTEL control model.
Be reset terminal, low level is effective;
Be sheet choosing input, this control line can make SA2828 and other peripheral interface sheet share same group of bus.RPHT, RPHB, YPHT, YPHB, BPHT, BPHB are six device for power switching that standard Transistor-Transistor Logic level output (being the PWM drive signal) can drive three-phase inverter respectively.
The indication of port output blocked styate is used to show whether output is sealed up for safekeeping, and low level is effective.SET TRIP turn-offs the triggering signal input, and when being input as when high, TRIP and six PWM outputs will be latched in low level state rapidly, and only could remove when RST resets.WSS is the waveform sampling synchronous port; ZPPB, ZPPY, ZPPR are respectively the zero phase pulse outputs of three-phase signal.CLX is a clock signal input terminal.VDD is+the 5V bias supply.The VSS earth terminal.
(2) SA2828 waveform occurring principle
The SPWM oscillogram that Fig. 7 is to use the waveform generator chip to form, his carrier frequency is definite; Its generating principle is through the synthetic SPWM of generation drive waveforms by the frequecy characteristic array sine curve value among triangular wave and the ROM; Also can be regarded as: change the oppositely overturn point or the current potential return difference of this schmitt trigger with the parameter among the ROM.
Because modulation waveform is about 90 degree, 180 degree, 270 degree symmetries, so the waveform instantaneous amplitude of 0-90 degree is only arranged among the waveform ROM, sampling interval 0.23 degree, 90 the degree in totally 384 groups of 8 sampled values deposit among the ROM, the instantaneous value of the expression sine wave of each sampled value linearity, by phase control logic, it is formed the complete waveform of 0-360 degree.This modulating wave and carrier wave ratio produce three-phase six tunnel bipolar SPWM modulation waveforms.It removes pulse duration through pulse width cancellation circuit less than the pulse of cancellation time, introduce Dead Time through the pulse delay circuit again, thus guaranteed conversion moment high and low end power switch common conducting phenomenon can not appear.
24 initialization temporary registers can be used to be provided with the output waveform parameter among Figure 10, carrier frequency for example, minimum pulse width, pulse cancellation time counter reset etc.Once setting, in service the permission changes; 24 control registers are used for adjusting the change frequency of modulated wave, amplitude, and output is closed, and ovennodulation is selected, start and close etc. (seeing Figure 11, write command data and write control register constrained parameters).Above-mentioned setting and adjustment are all sent instruction by microprocessor or microcontroller, and data deposit three 8 temporary register R0 earlier in, and R1 among the R2, sends 24 initialization registers and 24 control registers respectively to by R3 and R4 then.When initialization or adjustment, the RSR end will put 0, sees Figure 11 flow chart.
SA8282 is controlled by multiplexing MOTEL bus by the microprocessor of joining outward, and with the Microprocessor Interface of joining outward, this interface bus has the ability of two kinds of bus format of automatic adaptation Intel and Motorola and work schedule, after the circuit start operation, when AS/ALE end when low level becomes high electricity, inner testing circuit latchs
State, if testing result is that high level then enters Intel's pattern automatically, if testing result is a low level, then select Motorola's pattern work, bus connects relative used microprocessor with timing information, this process will be carried out when each AS/ALE becomes high level, and model selection should be set by the user in the reality.
(3) the SA8282 characteristics are summed up
Use the SA8282 waveform generator can bring following some advantage:
(1) be applicable to two kinds of bus format of Intel and Motorola, interface generality is good, and programming easily, and is simple to operate, and is quick, convenient.
(2) the bilateral sampling method of using symmetry commonly used produces the PWM waveform, and the waveform generation digitlization is floated when no, and no temperature is floated good stability.
(3) carrier frequency can realize quiet operation up to 24KHZ when external clock frequency is 12.5MHZ; In practice can with the public crystal oscillator of single-chip microcomputer.
(4) modulation frequency range is wide, precision height (12), and the sine wave output frequency can reach 4KHZ, can realize high-frequency High Accuracy Control and smooth frequency conversion.
(5) minimum pulse width and Dead Time are finished by software setting, have both saved hardware cost, make modification flexible again.
(6) under the constant situation of circuit,, just can change the inverter performance index by revising control buffer parameter.Drive different loads or work in different operating modes, comprise in good time control charge strength.
(7) by detecting SPWM output phase sequence feedback, the program adaptive delay makes SPWM export the requirement that can satisfy the storage battery charging.
(8) can reach output frequency by modulation is that 0KHZ gives motor windings through a DC, realizes " direct current inserts braking " of motor.
(9) the independent end that blocks can also make microprocessor prevent the generation of emergency by instantaneous blockade output pwm pulse.
[operation principle of BSG motor frequency conversion device control system]
The basic structure of BSG motor frequency conversion device control system as shown in Figure 1, this system includes: storage battery (120V), harmonic shutter (inductance and electric capacity are formed), Switching Power Supply (DC-DC multiple power supplies, provide the voltage standard of different operating circuit and chip), current sensor (mutual inductance or Hall), voltage sampling circuit (detecting the storage battery capacity), band CAN controller single-chip microcomputer (AT89C51CC01S), waveform generator (SA8282), analog switch (CD4066B), light idol driver for isolating (HCPL-316J), speed probe process chip (AU6802N1), NOR gate (CD4078B), reverse this schmitt trigger (CD40106), BSG motor etc., system needs realize by modularization design.
(1) AT89C51CC01 single-chip microcomputer
AT89C51CC01 (T89C51CC01) is the enhancement mode high-performance microprocessor based on 8 80C51 kernels by ATEML company Development and Production.This sheet is the CAN network and singlechip computer of first CANNARYTM series, and its X2 mode of operation can reach the instruction execution cycle of 300ns when 20MHz.In addition, the CAN controller of full merit provides the Flash program register space of 32K byte onlinely to download, and other has the EEPROM of 2K byte and the data register of 1.2K byte; It shows particularly outstanding aspect Electro Magnetic Compatibility, is well suited for the acp chip as power management and frequency-changing control system; Its pin and 80C51 type are alike, realize but some specific function is provided with the multiplexing function pin of change by program.
The CAN controller that AT89C51CC01 includes has comprised and can realize the high-performance serial network necessary all hardware of communicating by letter, thus can control communication stream can be smoothly local area network (LAN) by the CAN agreement.For fear of causing confusion, the CAN controller that increases in the chip is to occur as the memory mapping ancillary equipment that can both sides works alone for CPU, promptly can simply be interpreted as AT89C51CC01 the conglomerate of two devices that work alone.
Enable the function of CAN controller, mainly realize by four special function registers (SPR), CPU finishes by them the control and the visit thereof of CAN controller, and interface structure as shown in figure 12.These four special function registers are respectively: (1) address register (CANADR), and CPU is by the examination sign indicating number register of CANADR read/write CAN controller; (2) data register (CANDAT), the CAN controller internal register that the CANDAT correspondence is pointed to by CANADR; (3) control register (CANCON), it has two functions, reads the interrupt register that CANCON means visit CAN controller, writes CANCON and means the visit order register; (4) status register (CANSTA) has two functions, reads CANSTA and be the status register of visit CAN controller, writes CANSTA and be the address for follow-up DMA transmission equipment internal data memory RAM.In addition, dma logic allows CAN controller and the CPU high-speed data exchange between sheet master RAM.
In the chip initiation stage, CPU finishes the function initialization of CAN controller by writing content to CANCON and CANSTA.In actual communication process, CPU then utilizes four registers that the CAN controller is received and sends data message.
(2) working principle of hardware of BSG Frequency Converter Control system
The DC-DC multiple power supplies adopts the standard design of Switching Power Supply, cooperates the many taps high frequency transformer with different voltage specification requirements, externally export 5V ,+12V ,-multichannel isolated DCs such as 12V, 24V.Because the fluctuation range relatively large (be 130V when being full of, may be reduced to 70V in the use) of battery voltage so should select suitable circuit structure, satisfies the input voltage adaptive capacity.
Control board is the core of whole system, has adopted the AT89C51CC01 single-chip microcomputer to form the modular converter of system, waveform generator (pulse-width modulation special chip) employing SA8282, CAN bus transceiver (driver) 82C250 and main circuit and output voltage, current data acquisition module etc.
Control board provides 3 road or 6 road SPWM signals (wherein having 3 tunnel by analog switch conversion) by the SA8282 chip to the IGBT three-phase inversion module (intelligent IGBT power model) of band IPM function.The SA8282 chip is by the MITEL company Development and Production of Britain, is characterized in that control is simple, frequency accuracy is high, operational reliability is high, and 8 MOTEL multiplexed data bus of its support standard can be easily and the single-chip microcomputer swap data.Single-chip microcomputer only needs 5 data register assignments to chip internal, just can finish the initialization of SPWM waveform output and control in real time.The SA8282 chip is standard 28 pin dual in-line package, and the TTL drive signal that pin RPHT, RPHB, YPHT, YPHB, BPHT, BPHB output three-phase can independently be controlled transmits by light-coupled isolation, can corresponding 6 road IGBT that drive on the three phase inverter bridge.Need to prove that when the storage battery charged state, the RPHT of IGBT, RPHB, YPHT input are with monolateral shutoff.
With after IGBT three-phase inversion module is connected, AT89C51CC01 only need carry out initialization to it when starting with the SA8282 chip, and after three-phase output reached predetermined value, SA8282 promptly can drive IGBT three-phase inversion module.Only when adjusting SPWM output, AT89C51CC01 just need write the SA8282 instruction, controls.Simultaneously; the TRIP pin of SA8282 chip can respond the fault-signal that IGBT (IPM) sends, and turn-offs all SPWM waveform outputs rapidly, and inverter circuit is protected fast; and, guarantee system safety by TRIP SET port output state position notice AT89C51CC01 single-chip microcomputer.
The data acquisition module that is distributed in main circuit direct-flow input end and three-phase output end can be gathered each road voltage, electric current, after carrying out the A/D conversion, AT89C51CC01 is saved in the data storage, be convenient to CPU and judge whether system's I/O is normal, and carry out corresponding operating.
CAN bus transceiver 82C250 is the interface between CAN controller and physical bus, is called for short the CAN driver.Be initially the automobile high-speed design of communication, have many structures at the vehicle Application Design.Its characteristics comprise: effectively reduce the influence of automotive environment instantaneous interference to signal, have protection bus ability; Be short-circuited between protection battery and the ground; Support low current standby mode etc., therefore the needs of very suitable frequency conversion system.82C250 is linked to each other with the input of CAN interface, the output of AT89C51CC01, just constituted the interface of the external communication of auxiliary inverse power supply, with reference to figure 1.
(3) the software work principle of BSG Frequency Converter Control system
The power management function of AT89C51CC01 among Fig. 1 and inverter system function realize that by the C Programming with Pascal Language outside finishing its controlled function, program is made every effort to rationally and simplified, to adapt to the requirement of electric automobile to the stability of a system and reliability.BSG Electric Machine Control workflow as shown in figure 14.After system powered on and moves, single chip computer AT 89C51CC01S at first carried out data initialization to SA8282 chip initiation register, determined to start drive pattern or charge mode program according to the vehicle operation state then.The selected back of pattern and start after, the electric current and the voltage condition of the detection automotive power job information that program is not stopped, storage battery electric weight, three-phase output place are adjusted the SPWM waveform of exporting in good time, reach need and the state of ideal operation.Therefore for driving condition:, can cook up the duration of efficient BSG machine operation parameter and the work of participation dynamical system by the detection of storage battery electric weight (SOC) and output current.Start state for BSG: by the detection of storage battery electric weight (SOC) and output current, can cook up rational charge strength, avoid occurring the sudden change of dynamic regime, influence comfortableness.
The information transmission of dynamic regime in a word, detection and program judge it is the necessary condition that power supply is effectively managed, that is to say to have only and to realize effective modification SA8282 control register parameter by detection side to storage battery electric weight and current/voltage, adjust SPWM output, finally obtain the efficient operation of BSG motor.For example, motor is after operation a period of time, battery voltage will descend, cause the three-phase output voltage of inverter to be lower than set point, after AT89C51CC01 detects this phenomenon, send instruction to SA8282, recently improve the equivalent voltage output amplitude, guarantee the stable of power supply output by the duty that changes SPWM; Also be to realize effective control equally to the storage battery charge strength by the output that instruction changes the SPWM of SA8282 at generating state.For power management, need control program regularly to detect Control Parameter in the data storage.If whole-control system has been revised the operational factor of inverter by the CAN communication, AT89C51CC01 will be according to new operational factor adjustment output.
Three interrupt routines in the control program are respectively: data acquisition program, CAN bus communication program and exception handles.
Data acquisition program regularly triggers by the chip internal counter, and input, the outlet line of inverter carried out data acquisition, deposits data storage after mould/number conversion in, gives CPU and carries out operation conditions and judge.
CAN bus communication program comprises the plurality of sub program, and its base program structure as shown in figure 15.After communication program triggered, the CAN controller of AT89C51CC01 was carried according to command word and is carried out inter-related task.When in the system during certain operational module request msg, every operational factor of converter power supply is transferred to Full Vehicle System; When certain operational module query node state, data such as current C AN node state are sent; When certain operational module requires to revise operational factor, deposit the data parameters that receives in data storage.
Exception handles has the highest interrupt priority, and external interrupt (INT0) pin that is about to AT89C51CC01 links to each other with the TRIP SET pin of SA8282 chip.When inverter circuit broke down, IPM can send the TRIP pin that fault-signal is given the SA8282 chip, turn-offed PWM output by the latter in the very first time, and sent interrupt signal by TRIP SET pin to AT89C51CC01, triggered exception handles.Exception handles is at first closed SA8282; Inquire about each operational module by the CAN bus then, and failure code and current system operational parameters are write message send on the bus simultaneously; Last power management and frequency conversion system are realized safety shutdown with whole BSG machine operation system closing.
(4) frequency converter drive circuit
HCPL-316J is a kind of IGBT gate-drive optical coupler, and its inner integrated collector emitter voltage undersaturation testing circuit and malfunction feedback circuit are for the reliably working of drive circuit provides guarantee.Its characteristic is: CMOS compatible/Transistor-Transistor Logic level; Light is isolated, the malfunction feedback; " soft " IGBT turn-offs; Undersaturation detects and the under-voltage locking protection; Overcurrent protection function; Wide operating voltage range (15～30V); The user is configurable to automatically reset, closes automatically.The SA8282 waveform generator combines the driving that realizes IGBT with this coupler, make IGBT VCE undersaturation detection architecture compactness, and is low-cost and be easy to realize, the safety that has satisfied wide region simultaneously with regulate needs.
Embodiment
Present embodiment has been described a kind of motor frequency conversion control system, as Figure 1-3, comprises power drives sensing circuit and control circuit.
Described control circuit links to each other with the power drives sensing circuit, comprising: band CAN controller single-chip microcomputer, waveform generator, analog switch, IGBT light-coupled isolation driver, the first interface adapter circuit, the second interface adapter circuit, NOR gate, and reverse this schmitt trigger; Described band CAN controller single-chip microcomputer links to each other with waveform generator, analog switch respectively; Described waveform generator links to each other with analog switch, the first interface adapter circuit, NOR gate respectively; Described analog switch links to each other with the first interface adapter circuit; The output of the described first interface adapter circuit links to each other with the input of described IGBT light-coupled isolation driver, and IGBT light-coupled isolation output end of driver links to each other with the input of the second interface adapter circuit.
Described power drives sensing circuit comprises power storage battery group 1, vehicle operation storage battery 2, solid-state relay 3, voltage detecting change-over circuit 5, harmonic wave suppresses circuit 7, intelligent IGBT power model 8, current sense and treatment circuit 9, R phase timing generator circuit 10, BSG motor 11, and speed probe process chip 12.Wherein, power storage battery group 1 is in order to directly to provide electric power to intelligent IGBT power model 7; Vehicle operation storage battery 2 gives solid-state relay 3 power supplies by Switching Power Supply 4; After solid-state relay 3 was connected, many group output Switching Power Supplies 6 powered on, and begin to provide the system works power supply; Voltage detecting change-over circuit 5 is the acceptable voltage of single-chip microcomputer in order to the high voltage of conversion power storage battery group 1; It is in parallel with intelligent IGBT power model 8 that harmonic wave suppresses circuit 7, the electromagnetic interference of appearance when absorbing 11 work of BSG motor; The 8 output SPWM pulses of intelligence IGBT power model are in order to drive BSG motor 11 and to absorb BSG motor electric energy; Current sense and treatment circuit 9 are given CPU in order to the waveform of transition detection electric current; R phase timing generator circuit 10 is in order to produce the zero-crossing pulse signal, and control BSG motor 11 effectively charges to storage battery when generating state; Be provided with speed and temperature sensor in the BSG motor 11; Speed probe process chip 12 in order to handle the tach signal from velocity transducer, converts 8 bit data to and gives CPU.
The output signal of the R of described waveform generator (B), B (B), Y (B) pin links to each other with IGBT light-coupled isolation driver through the first interface adapter circuit, again via exporting at Q2, Q4, Q6 port after the second interface adapter circuit decoupling; The output signal of the R of waveform generator (T), B (T), Y (T) pin is exported by 2,4,9 output ports of analog switch after 1,3, the 8 input ports input of analog switch, give IGBT optocoupler drive circuit through the first interface adapter circuit again, at last by exporting at Q1, Q3, Q5 port after the second interface adapter circuit decoupling.Described waveform generator is a three-phase SPWM generator.
The P0.0-P0.7 port of described band CAN controller single-chip microcomputer links to each other with the AD0-AD7 port of waveform generator, as 8 bit data mouths; Band CAN controller single-chip microcomputer
The corresponding port of P3.2/INT0, P3.0, P3.1 port and waveform generator
ALE links to each other; Port TXDC, the RXDC of band CAN controller single-chip microcomputer link to each other with CAN director port CTXD, CRXD, are used for the CAN system communication; The P1.0 port of band CAN controller single-chip microcomputer receives the battery capacity signal SOC from the voltage detecting change-over circuit, the P1.1-P1.3 port receives current sensing signal IR, IB, the IY from current sense and treatment circuit, in order to realize the control to the battery electric quantity and the output current of system; P3.3/INT1 pin and described the R output port of timing generator circuit mutually link to each other; The P1.6 port links to each other with 5,6,13 ports of analog switch; P1.4, P1.5 port link to each other with WSS, the ZPP O/PS port of waveform generator.
The input port 2,3,4,5 of NOR gate receives from IGBT light-coupled isolation driver respectively
The fault-signal of port, electric current and temperature over-range index signal after oppositely this schmitt trigger is handled from intelligent IGBT power model 8, from the temperature sensor of BSG motor 11 after oppositely this schmitt trigger is handled the temperature over-range signal and from the electric current of current sense and treatment circuit 9 signal that transfinites.
The operation principle of present embodiment BSG motor frequency conversion control system is as follows:
When BSG motor 11 is worked as generator, the electric power that BSG motor 11 sends stays diode and Lower Half bipolar-type power pipe T2, T4, T6 by 3 first half bipolar-type power pipe T1, T3, T5 in the IGBT module 8 continuous, form the loop under the control of Q2, Q4, Q6 pin, the electric power that BSG motor 11 sends under the SPWM impulse form will dash power storage battery group 1.
Vehicle operation storage battery 2 gives Switching Power Supply 4 power supplies by switch, after Switching Power Supply 4 powers on, acts on solid-state relay 3 and makes 5 work of many group output Switching Power Supplies, and this moment, all circuit powered on, and started working.
Harmonic wave suppresses circuit 7 in order to absorb the electromagnetic interference that occurs when BSG motor 11 is worked; Current sense and treatment circuit 9 are given CPU in order to the waveform of transition detection electric current, be provided with voltage comparator in current sense and the treatment circuit 9, when being set, crosses in limited time current value, current sense and treatment circuit 9 will be exported electronegative potential and give waveform generator (SA8282 chip) by NOR gate, to realize quitting work of supercurrent; BSG motor 11 is provided with speed and temperature sensor, and velocity transducer operating speed transducer process chip 12 is handled CPU is given in the back by the Ps mouth Pa0-Pa7; Temperature sensor carries out voltage ratio by reverse this schmitt trigger, and when temperature over-range, the output electronegative potential is given NOR gate, realizes overtemperature shutdown function; R phase timing generator circuit 10 is used to detect R phase sequential, R the rising to name a person for a particular job and send the Pd2/INT2 mouth that a pulse Vplus gives CPU of each cycle mutually, storage battery is effectively charged when the generating state to realize control motor 11.
In the control circuit there being main devices: is with CAN controller single-chip microcomputer (AT89C51CC01S), waveform generator (SA8282), six IGBT light-coupled isolation drivers (HCPL316J), NOR gate (CD4078B), reaches analog switch (CD4066B).
The R (B) of waveform generator (SA8282), B (B), Y (B) pin link to each other with IGBT light-coupled isolation driver through the first interface adapter circuit of current limliting, hold output at Q2, Q4, Q6 after the second interface adapter circuit decoupling via electric capacity and resistance composition; The output signal of the R (T) of waveform generator (SA8282), B (T), Y (T) pin is behind 1,3,8 inputs of analog switch (4066), 2,4,9 outputs output by analog switch (4066), give IGBT optocoupler drive circuit through the interface adapter circuit again, at last by holding output at Q1, Q3, Q5 after the second interface adapter circuit decoupling.When the P1.6 port by AT89C51CC01S can be realized 11 generatings of BSG motor to 4066 5,6,13 controls of switch control ends simultaneously to the charging of storage battery; Simultaneously the P3.3/INT1 pin of AT89C51CC01S is accepted the framing signal that transmits through R phase timing generator circuit 10 in the power drives sensing circuit, by to the waveform generator rewriting in (SA8282) cycle, motor is carried out under controlled and effective state to the charging of storage battery.
The port P0.0-P0.7 of single-chip microcomputer (AT89C51CC01S) links to each other as 8 bit data mouths with the port AD0-AD7 of waveform generator (SA8282); AT89C51CC01S's
The corresponding port of P3.2/INT0, P3.0, P3.1 port and waveform generator
ALE links to each other, and realizes that data mode is selected and control data transmits.
Port TXDC, the RXDC of band CAN controller single-chip microcomputer link to each other with CAN director port CTXD, CRXD, are used for the CAN system communication; The P1.0 port receives the battery capacity signal SOC from the voltage detecting change-over circuit, and the P1.1-P1.3 port receives current sensing signal IR, IB, the IY from current sense and treatment circuit, in order to realize the control to the battery electric quantity and the output current of system; P3.3/INT1 pin and described the R output port of timing generator circuit mutually link to each other; The P1.6 port links to each other with 5,6,13 ports of analog switch; P1.4, P1.5 port link to each other with WSS, the ZPP O/PS port of waveform generator.
The input port 2,3,4,5 of NOR gate receives from IGBT light-coupled isolation driver respectively
The fault-signal of port, electric current and temperature over-range index signal after oppositely this schmitt trigger is handled from intelligent IGBT power model 8, the temperature over-range signal of temperature sensor after oppositely this schmitt trigger is handled from BSG motor 11, with electric current from current sense and treatment circuit 9 signal that transfinites, if above-mentioned 3 kinds of signals transfinite, waveform generator (SA8282) will quit work.
The utility model is based on single-chip microcomputer and waveform generator design, its driving and refresh charging unit are respond well, and have characteristics such as circuit design is simple, multiple functional, cost performance is high, reliability is high, detail programming is easy, shortened the construction cycle to a great extent.
Here description of the present utility model and application are illustrative, are not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other forms, structure, layout, ratio, and realize with other elements, material and parts.
Claims (6)
1. a motor frequency conversion control system is characterized in that: comprise power drives sensing circuit and control circuit; Described control circuit links to each other with the power drives sensing circuit, comprising: band CAN controller single-chip microcomputer, waveform generator, analog switch, IGBT light-coupled isolation driver, the first interface adapter circuit, the second interface adapter circuit, NOR gate, and reverse this schmitt trigger; Described band CAN controller single-chip microcomputer links to each other with waveform generator, analog switch respectively; Described waveform generator links to each other with analog switch, the first interface adapter circuit, NOR gate respectively; Described analog switch links to each other with the first interface adapter circuit; The output of the described first interface adapter circuit links to each other with the input of described IGBT light-coupled isolation driver, and IGBT light-coupled isolation output end of driver links to each other with the input of the second interface adapter circuit.
2. motor frequency conversion control system according to claim 1 is characterized in that, described power drives sensing circuit comprises:
Power storage battery group (1) is in order to directly to provide electric power to intelligent IGBT power model (7);
Vehicle operation storage battery (2) is given solid-state relay (3) power supply by Switching Power Supply (4);
After solid-state relay (3) was connected, many group output Switching Power Supplies (6) powered on, and begin to provide the system works power supply;
Voltage detecting change-over circuit (5) is the acceptable voltage of single-chip microcomputer in order to the high voltage of changing power storage battery group (1);
Harmonic wave suppresses circuit (7), and is in parallel with intelligent IGBT power model (8), in order to absorb the electromagnetic interference that occurs when BSG motor (11) is worked;
Intelligence IGBT power model (8), output SPWM pulse is in order to drive BSG motor (11) and to absorb BSG motor electric energy;
Current sense and treatment circuit (9) are given CPU in order to the waveform of transition detection electric current;
R phase timing generator circuit (10), in order to produce the zero-crossing pulse signal, control motor (11) effectively charges to storage battery when generating state;
In the BSG motor (11), be provided with speed and temperature sensor;
Speed probe process chip (12) in order to handle the tach signal from velocity transducer, converts 8 bit data to and gives CPU.
3. motor frequency conversion control system according to claim 2, it is characterized in that: the output signal of the R of described waveform generator (B), B (B), Y (B) pin links to each other with IGBT light-coupled isolation driver through the first interface adapter circuit, again via exporting at Q2, Q4, Q6 port after the second interface adapter circuit decoupling; The output signal of the R of waveform generator (T), B (T), Y (T) pin is exported by 2,4,9 output ports of analog switch after 1,3, the 8 input ports input of analog switch, give IGBT optocoupler drive circuit through the first interface adapter circuit again, at last by exporting at Q1, Q3, Q5 port after the second interface adapter circuit decoupling.
4. motor frequency conversion control system according to claim 2 is characterized in that: the P0.0-P0.7 port of band CAN controller single-chip microcomputer links to each other with the AD0-AD7 port of waveform generator, as 8 bit data mouths; Band CAN controller single-chip microcomputer
The corresponding port of P3.2/INT0, P3.0, P3.1 port and waveform generator
ALE links to each other;
Port TXDC, the RXDC of band CAN controller single-chip microcomputer link to each other with CAN director port CTXD, CRXD, are used for the CAN system communication;
The P1.0 port of band CAN controller single-chip microcomputer receives the battery capacity signal SOC from voltage detecting change-over circuit (5), the P1.1-P1.3 port receives current sensing signal IR, IB, the IY from current sense and treatment circuit (9), in order to realize the control to the battery electric quantity and the output current of system; P3.3/INT1 pin and described the R output port of timing generator circuit (10) mutually link to each other; The P1.6 port links to each other with 5,6,13 ports of analog switch; P1.4, P1.5 port link to each other with WSS, the ZPP O/PS port of waveform generator.
5. motor frequency conversion control system according to claim 2 is characterized in that: the input port 2,3,4,5 of NOR gate receives from IGBT light-coupled isolation driver respectively
The fault-signal of port, electric current and temperature over-range index signal after oppositely this schmitt trigger is handled from intelligent IGBT power model (8), from the temperature sensor of BSG motor (11) after oppositely this schmitt trigger is handled the temperature over-range signal and from the electric current of current sense and treatment circuit (9) signal that transfinites.
6. motor frequency conversion control system according to claim 2 is characterized in that: described waveform generator is a three-phase SPWM generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202094205U CN201504221U (en) | 2009-09-08 | 2009-09-08 | Variable frequency control system of motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202094205U CN201504221U (en) | 2009-09-08 | 2009-09-08 | Variable frequency control system of motor |
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| CN201504221U true CN201504221U (en) | 2010-06-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159200A (en) * | 2015-09-21 | 2015-12-16 | 郑州精益达汽车零部件有限公司 | Overall vehicle controller based on function safety |
| CN108712133A (en) * | 2018-05-28 | 2018-10-26 | 云南兆富科技有限公司 | A kind of wind turbine separate type frequency-conversion drive apparatus |
| CN112930471A (en) * | 2018-08-31 | 2021-06-08 | 西门子股份公司 | Protective isolation module for an electric machine |
-
2009
- 2009-09-08 CN CN2009202094205U patent/CN201504221U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159200A (en) * | 2015-09-21 | 2015-12-16 | 郑州精益达汽车零部件有限公司 | Overall vehicle controller based on function safety |
| CN105159200B (en) * | 2015-09-21 | 2018-07-31 | 郑州精益达汽车零部件有限公司 | A kind of entire car controller based on functional safety |
| CN108712133A (en) * | 2018-05-28 | 2018-10-26 | 云南兆富科技有限公司 | A kind of wind turbine separate type frequency-conversion drive apparatus |
| CN112930471A (en) * | 2018-08-31 | 2021-06-08 | 西门子股份公司 | Protective isolation module for an electric machine |
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