CN2239091Y - a.c. generator and axial carrying a.c. generating electric voltage adjusting device - Google Patents
a.c. generator and axial carrying a.c. generating electric voltage adjusting device Download PDFInfo
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- CN2239091Y CN2239091Y CN 96202961 CN96202961U CN2239091Y CN 2239091 Y CN2239091 Y CN 2239091Y CN 96202961 CN96202961 CN 96202961 CN 96202961 U CN96202961 U CN 96202961U CN 2239091 Y CN2239091 Y CN 2239091Y
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Abstract
The utility model discloses an AC generator and an axial carrying AC generating electric voltage adjusting device, which belong to the field of the axial carrying AC electricity generation. The AC generator of the utility model is composed of a machine base, an end cover, a rotor, the iron core of the stator, and an armature winding, and the AC generator is also composed of the auxiliary winding of the voltage in the iron core and the auxiliary winding of the electric current. The sampling circuit of the voltage regulating device corresponding to the AC generator is connected with the output of the armature winding; the output of the sampling circuit is connected with the signal input end of the pulse width modulation circuit; the output of the pulse width modulation circuit is connected with the control end of the main-regulating unit circuit; the main-regulating unit circuit is serially connected with a rectifying circuit and is serially connected with an excitation winding, and the AC end of the rectifying circuit is connected with the auxiliary winding of the voltage and the auxiliary winding of the electric current.
Description
The utility model belongs to interchange shaft generator field, relates to a kind of generator and axle ac generator adjusting device, can be used for generator speeds such as boats and ships, vehicle or wind power generation and changes and the occasion of requirement output burning voltage.
Exchange the shaft generator device and be meant when former moving engine speed changes within the specific limits, can guarantee the device that generator voltage is stable.Two kinds of electromagnetic compensation formula constant frequency shaft generator devices that Chinese patent application CN1087454A and CN86202150U propose, this Blast Furnace Top Gas Recovery Turbine Unit (TRT) device therefor is more, comprise the frequency compensation exciter, the lock quick-mounting put and the constant speed motor dispatch control system, complex structure, it is big to take up room, and cost is also very high.And for many electricity consumption occasions, as for medium and small-scale vessel, in its operation and the navigation way main power load be after high-power illumination, electric heating, electric welding machine, blower fan and the rectification to charge in batteries and for the electricity consumption of communication and navigation equipment etc., wish mainly that when engine speed changes within the specific limits voltage is stable and frequency do not had strict requirement.So it is quite uneconomical that above-mentioned two patent applications are used for electricity consumption occasions such as medium and small-scale vessel.
The purpose of this utility model is, provide stable voltage output that non-constant frequency can be provided in a kind of the use, simple in structure, installing space is less, lower-cost alternating current generator and axle ac generator voltage regulator.
Realize that the technical scheme that a kind of alternating current generator is provided in the utility model purpose is (referring to Fig. 1), this alternating current generator has support (11), end cap (12), the silicon sheet core (21) of stator (2), armature winding (22) and rotor (3), armature winding (22) is located in the groove of silicon sheet core (21), and terminal block is led at its two ends, silicon sheet core (21) is fixed in the support (11), end cap (12) is fixedlyed connected with support (11), rotor (3) is installed in the front and rear cover (12) by bearing spider, be wound with excitation winding (31) on the rotor, the two ends of excitation winding (31) are drawn by brush; It is characterized in that, also be provided with auxiliary winding (23) of voltage and the auxiliary winding (24) of electric current in the groove of silicon sheet core (21), voltage assists the two ends of the auxiliary winding (24) of winding (23) and electric current to lead to respectively that machine is outer, its terminals are fixed on the terminal block, and terminal block is fixed on the support (11).
Referring to Fig. 2 and Fig. 3, it is synchronously auxiliary winding that above-mentioned voltage is assisted winding (23), and it is the triple-frequency harmonics winding that electric current is assisted winding (24).
Realize that the technical scheme that a kind of axle ac generator voltage regulator is provided in the utility model purpose is (referring to Fig. 4), this device has control circuit power supply (4), sample circuit (5), pulse-width modulation circuit (6), the whole element circuit (7) of homophony and rectification circuit (8).The input of control circuit power supply (4) and sample circuit (5) is equipped with the terminals that link to each other with the output of the armature winding (22) of generator; The power input of the output termination pulse-width modulation circuit (6) of control circuit power supply (4); The output of sample circuit (4) connects the signal input part of pulse-width modulation circuit (6); The output of pulse-width modulation circuit (6) connects the control end of the whole element circuit (7) of homophony.Homophony is put in order the terminals that element circuit (7) is provided with the input/output terminal that can link to each other with an end of the excitation winding (31) of rotor (3); Rectification circuit (8) is provided with a dc output end that can link to each other with the other end of excitation winding (31), another dc output end of rectification circuit (8) links to each other with the other end of the input/output terminal of the whole element circuit (7) of homophony, and rectification circuit (8) also is provided with the terminals of two ac input ends that can link to each other with two outputs of auxiliary winding (23) of voltage and the auxiliary winding (24) of electric current respectively.
Referring to Fig. 4 and Fig. 6, above-mentioned control circuit power supply (4) has transformer, 2 rectifier bridges, secondary filter circuit and pressurizer, the primary coil of transformer is provided with the terminals that can link to each other with the output of armature winding (22), the secondary coil of transformer has two groups, two groups of secondary coils link to each other with the end that exchanges of rectifier bridge separately respectively, the dc terminal of two rectifier bridges oppositely and connect, and the common port that connects is as the zero line of control circuit power supply (4), the output of rectifier bridge with anode output is as the anode of control circuit power supply (4), the output of rectifier bridge with negative terminal output is as the negative terminal of control circuit power supply (4), between anode and zero line and negative terminal and zero line and be connected to, on anode, be serially connected with three terminal regulator as the filter capacitor of first order filter circuit with as the filter capacitor of second level filter circuit.Sample circuit (5) has dropping resistor, rectifier bridge, inhibition interference signal electric capacity and adjustable voltage divider, one of the input of rectifier bridge exchanges termination dropping resistor is arranged, another of the other end of this dropping resistor and rectifier bridge input exchanges end and is provided with the terminals that can link to each other with armature winding (22), between two dc terminal of rectification bridge output end and be connected to and suppress interference signal electric capacity and adjustable voltage divider, the adjustable voltage divider output links to each other with the anode of isolating diode, and the cathode of isolating diode is the output of sample circuit (5).Pulse-width modulation circuit (6) has the voltage stabilizing reference power supply, error amplifier, saw-toothed oscillator, comparator and power amplifier tube, the output of voltage stabilizing reference power supply connects error amplifier, saw-toothed oscillator, the power end of comparator and power amplifier tube, its output also links to each other with the positive input of error amplifier by the preposition resistance of error amplifier, the output of error amplifier links to each other with the positive input of comparator, the input of saw-toothed oscillator is external as the resistance and the electric capacity that discharge and recharge, the zero line of the common point connection control circuit power supply (4) of resistance and electric capacity, the output of saw-toothed oscillator links to each other with the reverse input end of comparator, and the output of comparator links to each other with the control end of power amplifier tube.Homophony is put in order element circuit (7) and is had insulated gate electrode transistor npn npn IGBT or insulated gate polar form field effect transistor VMOSpower, back-emf protection diode and current limliting balance resistance; one end of current limliting balance resistance links to each other with the grid of IGBT or VMOSpower; the other end of current limliting balance resistance is the control end of the whole element circuit (7) of homophony; the input utmost point of IGBT or VMOSpower also is between the input of the whole element circuit (7) of homophony and the zero line and is connected to back-emf protection diode that the output stage of IGBT or VMOSpower also is the output connecting to neutral line of the whole element circuit (7) of homophony.Rectification circuit (8) has 2 rectifier bridges, the dc terminal of two rectifier bridges be connected in series mutually or and connect, exchange end and also be connected to shift capacitor.Control circuit power supply (4) anode connects the input of the voltage stabilizing reference power supply of pulse-width modulation circuit (6) through the output of three terminal regulator, and also connects the input of power amplifier tube; The current-limiting resistance of the output via pulse width modulation (6) of sample circuit (5) links to each other with the reverse input end of error amplifier; The output of the power amplifier tube of pulse-width modulation circuit (6) links to each other with the control end of the whole element circuit (7) of homophony; The output that homophony is put in order element circuit (7) is provided with the terminals that can link to each other with an end of excitation winding (31), the negative terminal of the dc terminal of rectification circuit (8) is provided with the terminals that can link to each other with the other end of excitation winding (31), and the anode of the dc terminal of rectification circuit (8) links to each other with the input of the whole element circuit (7) of homophony.
Referring to Fig. 5 and Fig. 6, between rectification circuit (8) and the whole element circuit (7) of homophony, be serially connected with the normally-closed contact of first relay K 1, the anode that is the dc terminal of rectification circuit (8) links to each other with an end of the normally-closed contact of K1, and the other end of K1 normally-closed contact links to each other with the input of the whole element circuit (7) of homophony; This device also has armature winding overvoltage protection sampling control circuit (91), and the input of this circuit is the terminals that can link to each other with the output of armature winding (22), and the output of this circuit links to each other with the winding wiring of first relay K 1.
Referring to Fig. 6; above-mentioned armature winding overvoltage protection sampling control circuit (91) has adjustable voltage divider; rectifier bridge; reference circuit; controllable silicon; the coil of first relay K 1; halfwave rectifier diode and relay coil fly-wheel diode; be serially connected with adjustable voltage divider between the two ends of the input of sampling control circuit (91); the high-power resistance of a termination adjustable voltage divider that is called first terminals of sampling control circuit (91); this resistance connects adjustable resistance; another terminals that are called second terminals of another this sampling of termination control circuit (91) of adjustable resistance; the interchange end of the adjustable end of adjustable resistance and the second wiring termination rectifier bridge; the positive termination of rectifier bridge is connected in series the input of the reference circuit of being formed by resistance and voltage-stabiliser tube; the output termination silicon controlled control end of reference circuit; between the dc terminal of rectifier bridge and be connected to filter capacitor; high-power resistance and adjustable resistance common junction connect the silicon controlled input; one end of the winding wiring of silicon controlled output termination first relay K 1; the positive pole of another termination halfwave rectifier diode of winding wiring; the negative pole of halfwave rectifier diode connects the negative terminal of rectifier bridge dc terminal, between the coil of first relay K 1 and halfwave rectifier diode and be connected to fly-wheel diode.
Referring to Fig. 5 and Fig. 6, this device also has hypervelocity overvoltage crowbar (92), and hypervelocity overvoltage crowbar (92) is composed in series by second relay K 2 and potentiometer, this circuit be provided with can with the interchange end of the auxiliary winding (24) of electric current mutually and two terminals that connect; Cross-over connection has high-capacity direct current capacitor C between the anode of rectification circuit (8) dc terminal and negative terminal
12With hypervelocity overvoltage sampling control circuit (93), coil and voltage-stabiliser tube that hypervelocity overvoltage sampling control circuit (93) has adjustable voltage divider, second relay K 2, adjustable voltage divider is attempted by between the two ends of rectification circuit (8) dc terminal, adjustable voltage divider is made up of dropping resistor and potentiometer polyphone, be serially connected with the coil and the voltage-stabiliser tube of second relay K 2 between the negative terminal of the common junction of dropping resistor and potentiometer and rectification circuit (8) dc terminal successively, the other end of dropping resistor links to each other with the anode of rectification circuit (8) dc terminal.
Referring to Fig. 6, between the control end that the negative terminal and the homophony of control circuit power supply (4) are put in order element circuit (7), also be connected with high value negative bias resistance.
Referring to Fig. 5 and Fig. 6; this device also has the whole unit current foldback circuit (94) of homophony; this circuit has the step-down sample resistance; semifixed resistor; voltage divider and power tube; between the output stage of the IGBT of the whole element circuit (7) of homophony or VMOSpower and zero line, be connected to the step-down sample resistance; common point place at this output stage and step-down sample resistance connects semifixed resistor; first resistance of the voltage divider that another termination of semifixed resistor is composed in series by first resistance and second resistance; the common junction place of first resistance and second resistance connects the control utmost point of power tube; the other end connecting to neutral line of second resistance; the input utmost point of power tube links to each other with the output of the error amplifier of pulse-width modulation circuit (6), the output stage connecting to neutral line of power tube.
Referring to Fig. 5 Fig. 6, between the output of the error amplifier of pulse-width modulation circuit (6) and zero line, be provided with and stablize weakening circuit (95), stablize weakening circuit (95) and be composed in series by neutralizing capacitance and resistance; Be provided with negative-feedback circuit (96) between the preposition resistance of the negative input of the output of the error amplifier of pulse-width modulation circuit (6) and error amplifier, negative-feedback circuit is made up of potentiometer (96) and capacitances in series.
The utlity model has positive effect: the alternating current generator that alternating current generator of the present utility model both can be used as the shaft generator device uses, and also can be used as common alternating current generator and uses.Axle ac generator voltage regulator of the present utility model both can be used for axle ac generator equipment, also can be used for change constant voltage AC power generating apparatus under the situation of load.Alternating current generator of the present utility model and axle ac generator voltage regulator combine, just can be used as the axle ac generator equipment uses, the stable voltage output of non-constant frequency is provided, not only possess simple in structure, installing space is less, lower-cost advantage, but also possess following characteristics: (1) is as the auxiliary main supply generator off-load excitation voltage of winding of the voltage of synchronous winding, exciting current when changing as the main supply load of the auxiliary winding of the electric current of triple-frequency harmonics winding, two kinds of windings are respectively hung oneself in series or in parallel with each other behind the rectifier bridge, and its synthetic exciting current guarantees that enough top value exciting voltages are arranged when generator is in minimum rated rotating speed or maximum rated power.(2) IGBT or VMOSpower are novel voltage-controlled type high-power electric and electronic modules, IGBT particularly, it has metal-oxide-semiconductor and transistorized common advantage: high input impedance, low drive current, high frequency characteristics is good, switching speed is fast, export that saturation voltage drop is little, the safety zone is big; Therefore make generator excitation with IGBT and adjust device, compare with traditional compound excitation transformer, reactor, controllable silicon, bipolar transistor, have that volume is little, in light weight, peripheral cell is few, simple in structure, highly sensitive, safe and reliable, the excitation power consumption is little, efficient is a high advantage.(3) pulse-width modulation circuit is a kind of controller of the A/D of carrying out conversion, can adopt operational amplifier to build, also can be made into application-specific integrated circuit (ASIC), also integrated manipulators such as TL494, LZ210, UAA4002, LM2524, SG2524, CW2524, UC2524 can be substituted, it will convert corresponding pulse width signal to by the voltage change signal of sample circuit input, the switching time of control IGBT, thereby regulator generator exciting current.(4) can to adopt with 4NICC78A be six end integrated regulators of representative to the control circuit power supply, also can build with rectifier bridge and 78 serial integrated regulators, it is secondary that this device input directly inserts power transformer, export the positive and negative direct current of stable band zero potential, make the simple in structure of control circuit power supply.Simultaneously, negative supply is directly guided to the control end of the whole element circuit of homophony, be in negative terminal in the time of can guaranteeing the IGBT input low level and saturated ending turn-offed IGBT reliably.The pressure stabilization function of control circuit power supply can carry out limited amplitude protection to the IGBT grid simultaneously.(5) sample circuit has been taked distinguished form, directly exchange the dividing potential drop sampling method in sampling place that links to each other with armature winding and replace traditional transformer sampling with resistance, not only cost is low, precision is high, but and eliminating transformer is measured, the trueness error that causes of three-phase transformer Y/Y connection dimension level waveform change particularly.(6) the utility model has also proposed the various safeguard measures in the practical process, is mainly: in the These characteristics (4) to IGBT grid voltage stabilizing limited amplitude protection; With first relay and controllable silicon is the generator armature winding output over-voltage protection circuit that main element is formed; Main frame exceeds the speed limit and causes the hypervelocity overvoltage crowbar of being controlled by second relay when assisting the winding voltage overvoltage; And be provided with field power supply filtering of forming by rectification circuit and the auxiliary winding of electric current and voltage and the large bulk capacitance that absorbs IGBT switch back-emf peak value; Be located at the whole unit of the homophony current foldback circuit between the error amplifier of the e utmost point of IGBT and pulse-width modulation circuit; And be located at the output and the negative-feedback circuit between the pulse-width modulation circuit signal input part of error amplifier and be located at the output of error amplifier and the stable weakening circuit between the zero line.(7) the utility model is not only applicable to single-phase generator and is suitable for threephase generator yet, when using threephase generator, only needs to make relevant circuit such as input signal into three-phase and takes a sample.
Fig. 1 is the structural representation of the utility model alternating current generator.
Fig. 2 is the stator winding expanded view of the utility model single-phase alternator.
Fig. 3 is the stator winding expanded view of the utility model threephase alternator.
Fig. 4 is a kind of circuit block diagram of the utility model axle ac generator voltage regulator.
Fig. 5 is the another kind of circuit block road of the utility model axle ac generator voltage regulator.
Fig. 6 is a kind of electrical schematic diagram of the utility model axle ac generator voltage regulator.
Fig. 7 is the internal circuit diagram of IC1 among Fig. 6.
Fig. 8 is the internal circuit diagram of IC2 among Fig. 6.
Fig. 9 is the oscillogram that coila is arranged among Fig. 8.
Figure 10 is the another kind of electrical schematic diagram of the utility model axle ac generator voltage regulator.
Below in conjunction with drawings and Examples the utility model is further described.
See Fig. 1 and Fig. 2,
See Fig. 1, make support (11) and end cap (12), dash to fold with the D31 silicon steel sheet and make silicon sheet core (21), be pressed into rotor magnetic pole (32) with the A3 sheet pack with the HT20-40 cast iron casting.Upward constitute rotor (3) at rotor magnetic pole (32) with QZ2 high strength enamelled wire coiling excitation winding (31).The stator slot (211) of silicon sheet core (21) has 36, embed auxiliary winding (24) of armature winding (22), electric current and the auxiliary winding (23) of voltage with the coiling of QZ2 high strength enamelled wire in stator slot (211) successively, the concrete method for arranging of each winding is provided by Fig. 2.U1 and U2 are two terminations of armature winding (22) among Fig. 2, S1 and S2 are two terminations of the auxiliary winding (24) of electric current, it is the triple-frequency harmonics winding that this electric current is assisted winding (24), and X1 and X2 are two terminations of the auxiliary winding (23) of voltage, and it is synchronously auxiliary winding that this voltage is assisted winding (23).Armature winding (22), voltage is assisted winding (23), electric current assists winding (24) and silicon sheet core (21) to form stator (2), the silicon sheet core (21) of stator (2) is fixed in the support (11), end cap (12) is fixedlyed connected with support (11), rotor (3) is installed in the front and rear cover (12) by bearing spider, after being drawn by brush, the two ends of the excitation winding (31) of rotor (3) are fixed on the terminal block, the termination of three kinds of windings in the stator (2) is drawn from support (11) inner chamber respectively and is fixed on the terminal block, terminal block is fixed in the terminal box (13), terminal box (13) is fixed on the support (11), thereby makes the terminal block indirect securement on support (11).
See Fig. 3, all the other are with embodiment 1, and difference is that the concrete method for arranging of each winding of stator (2) is provided by Fig. 3, and S1 among Fig. 3 and S2 are two terminations of the auxiliary winding (24) of electric current, and it is the triple-frequency harmonics winding that this electric current is assisted winding (24); X1 and X2 are two terminations of the auxiliary winding of voltage, and it is synchronously auxiliary winding that voltage is assisted winding (23); Three phase windings are single double-deck folded embedding form, and U, V, W and N are four terminations of armature winding (22), and wherein U, V, W end are three-phase output end, and the N end is neutral end.
By Fig. 5 to Fig. 8,
The annexation of the each several part circuit of this voltage regulating device is provided by the circuit block diagram of Fig. 5, and the concrete annexation of each device is provided by the electrical schematic diagram of Fig. 6.The internal circuit of IC1 among Fig. 6 is provided by Fig. 7, and the internal circuit of the IC2 among Fig. 6 is provided by Fig. 8.The model or the parameter of relevant main components and parts are: IC1 is 4NICC78A, IC2 is custom-designed integrated package, the model of IGBT is IMBH60-100, C12 is the electrochemical capacitor of 450V, 2200 μ f, V5, V6 are fast diode, use as continued flow tube, VB3 and VB4 are the 700V rectification module of 35A, and all the other are conventional components and parts.
See Fig. 4 and Figure 10, the basic structure of circuit is with embodiment 3, and difference is that sample circuit (5) is the rectification and voltage division sample circuit by the step-down of power transformation device.Control circuit power supply (4) is made up of the discrete rectifier bridge heap and the integrated regulator of 78 series.Pulse-width modulation circuit (6) by the SG2524 integrated package as main devices.Homophony put in order element circuit (7) by the VMOSpower module as main devices, two rectifier bridges of rectification circuit (8) are parallel with one another.
Practical example,
See Fig. 6 to Fig. 9, get the voltage regulating device of embodiment 1 gained single-phase alternator and embodiment 3 gained.According to the bus connection method among Fig. 6, with the terminals of each winding with can come into operation after the respective terminal of voltage regulating device is connected.
After dynamic host starts, main frame drives the alternating current generator rotation, press SB button (Fig. 6), storage battery GB is magnetized to the excitation winding L (31) of generator amature (3), help generator armature winding U1, U2 (22) to set up floating voltage, thereby each element circuit that makes this voltage regulating device obtains bias voltage and enters operating state, can close a floodgate simultaneously and send.When zero load, voltage auxiliary winding L x (23) mainly provide the open-circuit excitation power supply to excitation winding L (31).When generator loading increases, because armature reaction, triple harmonic current among the auxiliary winding L s (24) of electric current is increased, thereby can carry out coarse compensation to the generator loading exciting current, add the automatic corrective action of IGBT and pulse-width modulation circuit (6), can improve the voltage regulation of generator better.
The principle of the automatic corrective action of IGBT and pulse-width modulation circuit (6) is, when making the voltage of generator armature winding U1, U2 (22) output, the engine speed increase rises, then the voltage ratio on the RP2 also raises in the sample circuit (5), the corresponding rising of sampling voltage is also risen thereby the negative input of delivering to the error amplifier of pulse-width modulation circuit (6) also is the signal voltage of 4 pin of IC2.Because the waveform frequency that saw-toothed oscillator is produced in the pulse-width modulation circuit (6) is far above frequency input signal, if with this sawtooth signal (V1 among Fig. 9) benchmark of device as a comparison, voltage signal and sawtooth waveforms slope by the error amplifier input act on the output signal (V3-1 among Fig. 9) that just forms rectangular pulse, promptly finished the A/D conversion that voltage magnitude is become pulse duration, according to this principle, (general single-phase generator is 230V when the engine speed rising makes generator voltage surpass setting value, threephase generator is 400V) time, the input voltage signal of error amplifier rises, output signal is anti-phase to become decline (V2-1 among Fig. 8 and V2-2), voltage signal position on the slope moves down in the comparator, comparator pulse narrowing (V3-2 among Fig. 9), driven power amplifier tube TQ ON time duty ratio reduces, the corresponding minimizing of control back level IGBT ON time duty ratio, the exciting current that is passed through also reduces, generator output voltage is descended, when engine speed decline makes generator voltage be lower than setting value, the pulse-width modulation mechanism is opposite, so go round and begin again, keep the stable of generator output voltage.
The principle of each protective circuit of the utility model is:
When some cause specific causes whole power network overvoltage, the sampling potentiometer R of armature winding overvoltage protection sampling control circuit (91)
P1On voltage raise, V1 punctures, controllable silicon V2 conducting; relay K 1 coil gets; the K1 normally-closed contact that is connected in the IGBT loop disconnects, and whole energized circuit cuts off, and generator has a power failure; realized that overvoltage promptly protects; V2 is connected in the ac circuit, and diode V9 halfwave rectifier is after fault is eliminated; utilize the half-wave zero crossing can automatically shut down controllable silicon, do not need manual recovery.
Too high when engine speed, when load simultaneously was excessive, field power supply voltage can be too high, at this moment, and C
12Both end voltage raises; voltage-stabiliser tube V7 in the hypervelocity overvoltage sampling control circuit (93) punctures, the K2 coil gets; and make the main contacts closure of the K2 in hypervelocity overvoltage crowbar (92); rheostat Rp5 and auxiliary winding L s (24) shunting in parallel of electric current; field power supply voltage descends; the also corresponding decline of generator voltage, C
12Voltage also descends.To the overvoltage protection of field power supply part, also can carry out coarse regulation to generator output voltage.
The high-capacity direct current capacitor C
12Absorb the spike that IGBT switch back-emf produces, simultaneously field power supply is strobed, make exciting current smooth-out.
In order to prevent the IGBT overcurrent damage; the step-down sample resistance R14 of the whole unit current foldback circuit (94) of series connection homophony on emitter; when electric current was excessive, R14 voltage raise, during overrate; IC2 internal power pipe TK conducting; make the error amplifier output connecting to neutral of the pulse-width modulation circuit (6) that is among the IC2, comparator turn-offs, and power amplifier tube TQ carries and ends; IGBT does not have control signal and turn-offs, and realizes overcurrent protection.
Claims (10)
1, a kind of alternating current generator, silicon sheet core (21), armature winding (22) and rotor (3) with support (11), end cap (12), stator (2), armature winding (22) is located in the groove of silicon sheet core (21) and terminal block is led at its two ends, silicon sheet core (21) is fixed in the support (11), end cap (12) is fixedlyed connected with support (11), rotor (3) is installed in the front and rear cover (12) by bearing spider, be wound with excitation winding (31) on the rotor, the two ends of excitation winding (31) are drawn by brush; It is characterized in that, also be provided with auxiliary winding (23) of voltage and the auxiliary winding (24) of electric current in the groove of silicon sheet core (21), voltage assists the two ends of the auxiliary winding (24) of winding (23) and electric current to lead to respectively that machine is outer, its terminals are fixed on the terminal block, and terminal block is fixed on the support (11).
2, alternating current generator according to claim 1 is characterized in that, it is synchronously auxiliary winding that voltage is assisted winding (23), and it is the triple-frequency harmonics winding that electric current is assisted winding (24).
3, a kind of axle ac generator voltage regulator is characterized in that, has control circuit power supply (4), sample circuit (5), pulse-width modulation circuit (6), the whole element circuit (7) of homophony and rectification circuit (8);
The input of control circuit power supply (4) and sample circuit (5) is equipped with the terminals that link to each other with the output of the armature winding (22) of generator, the power input of the output termination pulse-width modulation circuit (6) of control circuit power supply (4), the output of sample circuit (4) connects the signal input part of pulse-width modulation circuit (6), and the output of pulse-width modulation circuit (6) connects the control end of the whole element circuit (7) of homophony;
Homophony is put in order the terminals that element circuit (7) is provided with the input/output terminal that can link to each other with an end of the excitation winding (31) of rotor (3), rectification circuit (8) is provided with a dc output end that can link to each other with the other end of excitation winding (31), another dc output end of rectification circuit (8) links to each other with the other end of the input/output terminal of the whole element circuit (7) of homophony, and rectification circuit (8) also is provided with the terminals of two ac input ends that can link to each other with two outputs of auxiliary winding (23) of voltage and the auxiliary winding (24) of electric current respectively.
4, axle ac generator voltage regulator according to claim 3 is characterized in that,
A, control circuit power supply (4) has transformer, 2 rectifier bridges, secondary filter circuit and pressurizer, the primary coil of transformer is provided with the terminals that can link to each other with the output of armature winding (22), the secondary coil of transformer has two groups, two groups of secondary coils link to each other with the end that exchanges of rectifier bridge separately respectively, the dc terminal of two rectifier bridges oppositely and connect, and the common port that connects is as the zero line of control circuit power supply (4), the output of rectifier bridge with anode output is as the anode of control circuit power supply (4), the output of rectifier bridge with negative terminal output is as the negative terminal of control circuit power supply (4), between anode and zero line and negative terminal and zero line and be connected to, on anode, be serially connected with three terminal regulator as the filter capacitor of first order filter circuit with as the filter capacitor of second level filter circuit;
B, sample circuit (5) have dropping resistor, rectifier bridge, inhibition interference signal electric capacity and adjustable voltage divider, one of the input of rectifier bridge exchanges termination dropping resistor is arranged, another of the other end of this dropping resistor and rectifier bridge input exchanges end and is provided with the terminals that can link to each other with armature winding (22), between two dc terminal of rectification bridge output end and be connected to and suppress interference signal electric capacity and adjustable voltage divider, the adjustable voltage divider output links to each other with the anode of isolating diode, and the cathode of isolating diode is the output of sample circuit (5);
C, pulse-width modulation circuit (6) has the voltage stabilizing reference power supply, error amplifier, saw-toothed oscillator, comparator and power amplifier tube, the output of voltage stabilizing reference power supply connects error amplifier, saw-toothed oscillator, the power end of comparator and power amplifier tube, its output also links to each other with the positive input of error amplifier by the preposition resistance of error amplifier, the output of error amplifier links to each other with the positive input of comparator, the input of saw-toothed oscillator is external as the resistance and the electric capacity that discharge and recharge, the zero line of the common point connection control circuit power supply (4) of resistance and electric capacity, the output of saw-toothed oscillator links to each other with the reverse input end of comparator, and the output of comparator links to each other with the control end of power amplifier tube;
D, homophony is put in order element circuit (7) and is had insulated gate electrode transistor npn npn IGBT or insulated gate polar form field effect transistor VMOSpower, back-emf protection diode and current limliting balance resistance, one end of current limliting balance resistance links to each other with the grid of IGBT or VMOSpower, the other end of current limliting balance resistance is the control end of the whole element circuit (7) of homophony, the input utmost point of IGBT or VMOSpower also is between the input of the whole element circuit (7) of homophony and the zero line and is connected to back-emf protection diode that the output stage of IGBT or VMOSPOWER also is the output connecting to neutral line of the whole element circuit (7) of homophony;
E, rectification circuit (8) have 2 rectifier bridges, the dc terminal of two rectifier bridges be connected in series mutually or and connect, exchange end and also be connected to shift capacitor;
F, control circuit power supply (4) anode connect the input of the voltage stabilizing reference power supply of pulse-width modulation circuit (6) through the output of three terminal regulator, and also connect the input of power amplifier tube; The current-limiting resistance of the output via pulse width modulation (6) of sample circuit (5) links to each other with the reverse input end of error amplifier; The output of the power amplifier tube of pulse-width modulation circuit (6) links to each other with the control end of the whole element circuit (7) of homophony; The output that homophony is put in order element circuit (7) is provided with the terminals that can link to each other with an end of excitation winding (31), the negative terminal of the dc terminal of rectification circuit (8) is provided with the terminals that can link to each other with the other end of excitation winding (31), and the anode of the dc terminal of rectification circuit (8) links to each other with the input of the whole element circuit (7) of homophony.
5, according to claim 3 or 4 described axle ac generator voltage regulators, it is characterized in that, between rectification circuit (8) and the whole element circuit (7) of homophony, be serially connected with the normally-closed contact of first relay K 1, the anode that is the dc terminal of rectification circuit (8) links to each other with an end of the normally-closed contact of K1, and the other end of K1 normally-closed contact links to each other with the input of the whole element circuit (7) of homophony; This device also has armature winding overvoltage protection sampling control circuit (91), and the input of this circuit is the terminals that can link to each other with the output of armature winding (22), and the output of this circuit links to each other with the winding wiring of first relay K 1.
6; axle ac generator voltage regulator according to claim 5; it is characterized in that; armature winding overvoltage protection sampling control circuit (91) has adjustable voltage divider; rectifier bridge; reference circuit; controllable silicon; the coil of first relay K 1; halfwave rectifier diode and relay coil fly-wheel diode; be serially connected with adjustable voltage divider between the two ends of the input of sampling control circuit (91); the high-power resistance of a termination adjustable voltage divider that is called first terminals of sampling control circuit (91); this resistance connects adjustable resistance; another terminals that are called second terminals of another this sampling of termination control circuit (91) of adjustable resistance; the interchange end of the adjustable end of adjustable resistance and the second wiring termination rectifier bridge; the positive termination of rectifier bridge is connected in series the input of the reference circuit of being formed by resistance and voltage-stabiliser tube; the output termination silicon controlled control end of reference circuit; between the dc terminal of rectifier bridge and be connected to filter capacitor; high-power resistance and adjustable resistance common junction connect the silicon controlled input; one end of the winding wiring of silicon controlled output termination first relay K 1; the positive pole of another termination halfwave rectifier diode of winding wiring; the negative pole of halfwave rectifier diode connects the negative terminal of rectifier bridge dc terminal, between the coil of first relay K 1 and halfwave rectifier diode and be connected to fly-wheel diode.
7, according to claim 3 or 4 described axle ac generator voltage regulators, it is characterized in that, this device also has hypervelocity overvoltage crowbar (92), hypervelocity overvoltage crowbar (92) is composed in series by second relay and potentiometer, this circuit be provided with can with the interchange end of the auxiliary winding (24) of electric current mutually and two terminals that connect; Cross-over connection has high-capacity direct current capacitor C12 and hypervelocity overvoltage sampling control circuit (93) between the anode of rectification circuit (8) dc terminal and negative terminal, hypervelocity overvoltage sampling control circuit (93) has adjustable voltage divider, the coil of second relay K 2 and voltage-stabiliser tube, adjustable voltage divider is attempted by between the two ends of rectification circuit (8) dc terminal, adjustable voltage divider is made up of dropping resistor and potentiometer polyphone, be serially connected with the coil and the voltage-stabiliser tube of second relay K 2 between the negative terminal of the common junction of dropping resistor and potentiometer and rectification circuit (8) dc terminal successively, the other end of dropping resistor links to each other with the anode of rectification circuit (8) dc terminal.
8, according to claim 3 or 4 described axle ac generator voltage regulators, it is characterized in that, between the control end that the negative terminal and the homophony of control circuit power supply (4) are put in order element circuit (7), also be connected with high value negative bias resistance.
9; axle ac generator voltage regulator according to claim 4; it is characterized in that; this device also has the whole unit current foldback circuit (94) of homophony; this circuit has the step-down sample resistance; semifixed resistor; voltage divider and power tube; between the output stage of the IGBT of the whole element circuit (7) of homophony or VMOSpower and zero line, be connected to the step-down sample resistance; common point place at this output stage and step-down sample resistance connects semifixed resistor; first resistance of the voltage divider that another termination of semifixed resistor is composed in series by first resistance and second resistance; the common junction place of first resistance and second resistance connects the control utmost point of power tube; the other end connecting to neutral line of second resistance; the input utmost point of power tube links to each other with the output of the error amplifier of pulse-width modulation circuit (6), the output stage connecting to neutral line of power tube.
10, axle ac generator voltage regulator according to claim 4, it is characterized in that, between the output of the error amplifier of pulse-width modulation circuit (6) and zero line, be provided with and stablize weakening circuit (95), stablize weakening circuit (95) and be composed in series by neutralizing capacitance and resistance; Be provided with negative-feedback circuit (96) between the preposition resistance of the negative input of the output of the error amplifier of pulse-width modulation circuit (6) and error amplifier, negative-feedback circuit is made up of potentiometer (96) and capacitances in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96202961 CN2239091Y (en) | 1996-02-17 | 1996-02-17 | a.c. generator and axial carrying a.c. generating electric voltage adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96202961 CN2239091Y (en) | 1996-02-17 | 1996-02-17 | a.c. generator and axial carrying a.c. generating electric voltage adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2239091Y true CN2239091Y (en) | 1996-10-30 |
Family
ID=33888726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96202961 Expired - Fee Related CN2239091Y (en) | 1996-02-17 | 1996-02-17 | a.c. generator and axial carrying a.c. generating electric voltage adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2239091Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097994A (en) * | 2011-01-26 | 2011-06-15 | 清华大学 | Generator excitation intelligent switch |
| CN105991075A (en) * | 2015-01-14 | 2016-10-05 | 财团法人工业技术研究院 | Power generation device |
| CN109586506A (en) * | 2018-12-15 | 2019-04-05 | 天恩璐（大连）能源科技有限公司 | A kind of axle generator |
| CN110875706A (en) * | 2018-08-29 | 2020-03-10 | 南京德朔实业有限公司 | Electric tool |
| CN112688466A (en) * | 2020-12-08 | 2021-04-20 | 康富科技有限公司 | High-power medium-speed generator |
-
1996
- 1996-02-17 CN CN 96202961 patent/CN2239091Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097994A (en) * | 2011-01-26 | 2011-06-15 | 清华大学 | Generator excitation intelligent switch |
| CN102097994B (en) * | 2011-01-26 | 2012-11-14 | 清华大学 | Generator excitation intelligent switch |
| CN105991075A (en) * | 2015-01-14 | 2016-10-05 | 财团法人工业技术研究院 | Power generation device |
| CN105991075B (en) * | 2015-01-14 | 2018-06-01 | 财团法人工业技术研究院 | power generation device |
| CN110875706A (en) * | 2018-08-29 | 2020-03-10 | 南京德朔实业有限公司 | Electric tool |
| CN110875706B (en) * | 2018-08-29 | 2021-08-27 | 南京德朔实业有限公司 | Electric tool |
| CN109586506A (en) * | 2018-12-15 | 2019-04-05 | 天恩璐（大连）能源科技有限公司 | A kind of axle generator |
| CN109586506B (en) * | 2018-12-15 | 2020-11-10 | 天恩璐（大连）能源科技有限公司 | Shaft belt generator |
| CN112688466A (en) * | 2020-12-08 | 2021-04-20 | 康富科技有限公司 | High-power medium-speed generator |
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