CN2094151U - Dc conversing power supply for lighting and controlling trolleys - Google Patents
Dc conversing power supply for lighting and controlling trolleys Download PDFInfo
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- CN2094151U CN2094151U CN 91208367 CN91208367U CN2094151U CN 2094151 U CN2094151 U CN 2094151U CN 91208367 CN91208367 CN 91208367 CN 91208367 U CN91208367 U CN 91208367U CN 2094151 U CN2094151 U CN 2094151U
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Abstract
The utility model relates to a DC conversing power supply for lighting and controlling trolleys, which is a pulse width modulation type switch stable voltage power supply. The DC conversing power supply for lighting and controlling trolleys is composed of the closed loop connection of a pulse width modulation circuit, a pulse transformer, a bridge arm drive circuit, a semi bridge type power switching circuit, a pulse transformer, an output filter circuit, an output voltage and current protective circuit and a monostable delay circuit in turn. The pulsating direct current high voltage transmitted by a rectifier station can be used by the power converting circuit after passing an inductance capacitance type low-pass filter with voltage dependent resistors to eliminate the high-voltage high-energy peak electric potential brought when a great deal of energy storage elements in the electrical network act. The DC conversing power supply for lighting and controlling trolleys can be used as a vehicular auxiliary power supply replacing generating sets.
Description
Control of DC converting formula electric car and electric consumption on lighting source belong to a kind of auxiliary power unit of Electric.
As the electric car of one of important vehicles in city, its main motor is that rated power is 60 kilowatts direct current machine, directly by the three phase rectifier DC power supply.Its power electrical network is that converting plant is output as 720 volts, and line end is 350～400 volts, and the rated voltage of main motor is 600 volts.Electric car control and electric consumption on lighting source as accessory power supply are generally 126 volts of DC power supply of low pressure, and main motor drives a generator by coaxial belt and powers to it.Thereby when electric car was walked, this generator was just to a vehicle-mounted alkaline battery charging and supply with control simultaneously and the electricity consumption of illumination even load, when electric car stops and just comes the supply load electricity consumption by this storage battery during low speed.Hours of daylight lacks in the winter time, and the time that car light leaves is long, and the load electricity consumption is just many, and storage battery just often is in under-voltage condition.When voltage is low to a certain degree the time, electric car is out of control with regard to logic, becomes one " dead car ", can't continue operation.
In order to solve the voltage stabilizing and the powerup issue in electric car control and electric consumption on lighting source, the utility model proposes a kind of DC converting formula electric car control and electric consumption on lighting source.
If adopt control of DC converting formula electric car and electric consumption on lighting source to replace a generating set so that alcaliotropism storage battery and control simultaneously and throw light on and use electric when electric car travels or stop, so that in exhausted most time, make charge volume greater than discharge capacity, just will solve following key problem in technology problem: (1) is because the electric car starting is frequent, require the switching speed of power device to want high, loss is little, and temperature rise is low.Though the commodity bipolar transistor can be withstand voltage 2200 volts, its switching speed is low, and loss is big, and temperature rise is so must employing can meet the mos field effect transistor (hereinafter to be referred as the MOSFET pipe) of above-mentioned requirements; (2) because in the power electrical network and connect many relays and be used for main motor is carried out the thyristor of stepless speed regulation, these high-power energy storage units can be superimposed with a lot of high frequency high energy spike potentials to the pulse dc high voltage of electrical network output when work, and the withstand voltage limit of commerical grade MOSFET pipe has only 1200 volts, thereby must add the multistage low pass filter that can prevent different brackets high frequency spike potential at the input of main and auxiliary power supply; (3) alkaline battery as one of load can be equivalent to a vast capacity and the very little capacitor of internal resistance; the Q value that inserts the back circuit loop is better; be easy to cause vibration and heavy current impact; thereby must add a series of feedback protection circuits, (4) inductance one capacitive filters must give filtering to the rectification output of reproduced pulse transformer.
For the foregoing reasons; the utility model just has following feature: it is a kind of PWM-type switching power supply of DC formula; it comprises main power source; accessory power supply and their three parts of common circuit; main power source be one by pulse-width modulation circuit; the brachium pontis drive circuit; mos field effect transistor itself that have damper diode with is the semibridge system circuit for power conversion of power device; output filter circuit and protective circuit connect a closed-loop system of formation successively; at pulse-width modulation circuit and brachium pontis drive circuit; respectively have between circuit for power conversion and the output filter circuit one every straight veins towards transformer; the guard signal of under-voltage or overvoltage and overcurrent or current limliting all passes through corresponding sampling element and takes out towards the former limit of transformer every straight veins from output; voltage and current overcurrent protection signal all is sent to pulse-width modulation circuit through inhibit signal of single stabilization delay circuit generation of a large time constant, quits work so that circuit enters guard mode.(in as 10 seconds) circuit just enters Soft Start-up Process under pulse-width modulation circuit control in inhibit signal disappears the back certain hour.If do not have inhibit signal to come in just to make circuit to enter running this moment.Otherwise will get back to out-of-work state once more.When the current limitation signal surpasses threshold values; be sent to pulse-width modulation circuit again after will suing for peace together with it by the main power source output voltage guard signal of photoelectric coupled device output; remove to control pulse width modulator wherein; export corresponding pwm voltage; go through being input in the circuit for power conversion by the brachium pontis drive circuit behind the transformer every straight veins; just power to the load by high frequency transformer through the square-wave voltage after the power transfer, thereby because the effect of current limliting has been played in the decline of voltage square wave mean value.The choke that can suppress its reversing impact electric current of all having connected on the power conversion apparatus of each arm, correspondingly just will be on each choke discharge diode in parallel, also respectively wanting the output of can releasing in parallel every the damper diode of straight veins high pressure high energy spike potential of generation when transformer is paid the limit electric current and commutate with primary current on the choke of the power conversion apparatus of every arm and string mutually, current transformer be serially connected in as the current sample element output every straight veins towards the former limit of transformer.Accessory power supply is a current-control type switching power supply that three tunnel outputs are arranged, and its first via output is used for protective circuit and pulse-width modulation circuit, and other two-way output is to two brachium pontis drive circuitry.Main, the common circuit of auxilliary power supply is just being gone here and there diode by two that are used for anti-stopping power electrical network output loading reversal connection successively, but the secondary capacitance-resistance filter of three grades of low pass filters and the output of mid point dividing potential drop is in series, above-mentioned low pass filter all is made up of a common mode inductance and the electric capacity that is parallel with a piezo-resistance for every grade, the breakdown voltage value of piezo-resistance is a hierarchical subtractive clustering, just going here and there the diode place from the rectification high pressure of the non-filtered of Power Environment Monitoring Network net from two adds, power to the bridge-type circuit for power conversion by the output of final stage low pass filter, it also will be again through powering to accessory power supply behind the capacitance-resistance filter, and its block diagram is asked for an interview Fig. 1.
Use proof: indexs such as output voltage of the present utility model and electric current, input voltage regulation and main power source internal resistance all meet or exceed instructions for use.
In order in conjunction with the embodiments the utility model to be done more detailed description below, now employed accompanying drawing of present specification and numbering thereof are summarized as follows:
The block diagram in Fig. 1-DC converting formula electric car control and electric consumption on lighting source;
The common circuit of Fig. 2-main power source and accessory power supply;
Fig. 3-brachium pontis drive circuit line map;
Fig. 4-pulse-width modulation circuit connects figure;
Fig. 5-control of DC converting formula electric car and electric consumption on lighting source major part line map;
The oscillogram of Fig. 6-Fig. 5.
Embodiment:
Ask for an interview Fig. 1.The pulse dc high voltage 1 of power electrical network output is successively through preventing that electrical network load reversal connection circuit 2, three grades of low pass filters 3 are sent to semibridge system circuit for power conversion 4,3 output also is sent to current-control type switching power supply 6 through secondary capacitance-resistance filter 5, the intermediate section pressure point of 5 primes be sent to output every straight veins towards transformer 7, another input of 7 is passed through an output filter circuit 8 to loads such as load 9(alkaline battery and electric car control and illuminations from the limit of paying of circuit for power conversion 4,7) power supply.4 send voltage protecting signal by voltage sampling element 10, and its under-voltage and overvoltage signal are sent to single stabilization delay circuit 13 by its protective circuit 11 and 12 respectively.13 output is sent to pulse-width modulation circuit 14 and is kept certain hour.7 primary current sends overcurrent or current limliting signal by current sample element 15, and over-current signal also is sent to 13 by its current foldback circuit 16, is sent to 14 again through 13.If its current limliting signal is when surpassing threshold values, it is just by a current limliting threshold values circuit 17 with come the automatic power supply output and be sent to pulse-width modulation circuit 14 by the voltage feedback signal that output voltage sampling circuit 18 is sent again after summing junction 19 summations, 14 output is sent to two brachium pontis drive circuits 21 and 22 every straight veins towards transformer 20 through one, removes driving power change-over circuit 4 by them.6 first via output is to each control and protective circuit 10～17 power supplies, and other two-way is not power to 21 and 22 respectively.
Please connect and see Fig. 2.D
1, D
2Be the diode that prevents electrical network load reversal connection, C
1Be used to filter the high frequency voltage component that is higher than filter capacitor voltage, R
1Be current-limiting resistance, L
1～L
3Be common mode inductance, C
2～C
4Be filter capacitor, RZ
1～RZ
3Be that three breakdown voltage values are respectively the piezo-resistance about 950 volts, 850 volts and 750 volts, they form three grades of low pass filters, R
4And C
5～C
8Formed a secondary capacitance-resistance filter, R
2, R
3, R
5And R
6Be grading resistor, N
1, N
2Be the adding end of electrical network pulse dc high voltage output, N
3～N
5Be the output of first order capacitance-resistance filter, N
4Be dividing point in the middle of it, N
5, N
6Be second level capacitance-resistance filter to 6 power supply output.N
3And N
5Also be the final stage low pass filter to 4 power supply output.
See Fig. 3 again, it is two brachium pontis drive circuits 21 and 22.Its effective input is a voltage square wave, from every the pay limit of straight veins towards transformer 20, its output 8 be through the square-wave voltage after the power amplification by a, b, 3 of c transport to semibridge system circuit for power conversion 4.R
7～R
18Be resistance, C
9～C
16Be electric capacity, D
3～D
6It is diode.T
1～T
8It is triode.
Single stabilization delay circuit 13 usefulness be the LM555 time-base circuit, it is by V
C1, VE
1Power supply.
Pulse-width modulation circuit 14 usefulness also be the chip SC3525 that the logical company of American Silicon produces.Its connecting mode is asked for an interview Fig. 4.Symbol " G " is represented photoelectricity coupling device.D brings in the output of self-limiting threshold values circuit 17, sues for peace mutually with main circuit output voltage guard signal at d end current limitation signal.E brings in the output from single stabilization delay circuit.14 output is sent to every the former limit of straight veins towards transformer 20.14 the chip pin mode of connection is represented with symbol (1)～(16).After voltage protecting signal or overcurrent guard signal enter 14 by 13 outputs and by chip pin (10), just make the latch output in 14 become electronegative potential by high potential, main power source is quit work, in case R is passed through in the guard signal disappearance
29, R
30, T
9, C
32Make main power source enter the soft start state; when the current limitation guard signal occurs; it just changes the error amplifier output valve in 14 with main power source output voltage feedback signal summation back by (1); its output just makes latch output be in low-potential state by a comparator, thereby current limliting is achieved.
Please see Figure 5 below.R
33～R
54Be resistance, C
29～C
36Be electric capacity, D
7～D
12Be diode, wherein, D
1～D
10Be the full-wave rectification diode, D
13～D
18Be damper diode, T
11～T
13, T
21～T
23It is the MOSFET pipe.B is a current transformer.L
4, C
36Form output filter circuit.F is adjustable voltage-stabiliser tube, and that be used for that the output voltage feedback sample uses is the TL431 of Texas ,Usa company.J
1, J
2It is the main power source output that powers to the load.G be the main power source output voltage every straight feedback element, it is a kind of photoelectric coupled device.F is a voltage protection sampled signal output, and it has driven two under-voltage and overvoltage crowbars that are made of operational amplification circuit by a voltage follower, and their output is exactly voltage protecting signal, directly is sent to single stabilization delay circuit 13.G is an overcurrent protection sampled signal output, and it also is to be sent to single stabilization delay circuit 13 after forming the overcurrent guard signal by an overcurrent protective circuit that is made of operational amplification circuit.H is a current limitation protection sampled signal output, and it is exported by the d end after also forming the current limitation guard signal by threshold circuit.Brachium pontis drive circuit 21 and 22 output are added by a, b and c point and are sent to that power is defeated to be changed in the circuit 4.Excessive for preventing impulse current when the load variations rate is big, all respectively gone here and there a choke L in each side of half-bridge
4And L
5, correspondingly at its other in parallel discharge diode D
19And D
20, and on each power conversion apparatus input also each parallel connection a voltage stabilizing didoe, D
13～D
18Have six.The high pressure spike potential that produces when the transformer primary current commutates every straight veins for the output of releasing, the power conversion apparatus of every arm with choke that it is gone here and there mutually on also respectively to join a damper diode D
21And D
22According to its polarity difference, can pass through D
21To N
3Point is released, and also can pass through D
22Release over the ground.The oscillogram of this part circuit is asked for an interview Fig. 6.t
1Be the logical width of maximum conducting, t
2Be minimum conducting width, t
3Be certain width of conducting constantly, t
0It is Dead Time.H is the brachium pontis high pressure spot.M is its mid point, and L is its earth point, V
H, V
MAnd V
LBe its correspondent voltage value, V
L=0 volt.V
1, V
2Be the input voltage of semibridge system circuit for power conversion 4, V
3Be that the output electricity is every the primary voltage of straight veins towards transformer.
Experimental result, technical data of the present utility model is as follows:
Specified input pulsating dc voltage: 600 volts;
Input voltage range: 350～720 volts;
Output-current rating 25 peaces (in the time of 500～720 volts);
Rated output voltage: 16.2～16.5 volts;
Output current scope: 5～25 peaces; The storage battery electromotive force is lower than 3 Fu Shikeda, 50 peaces;
Input voltage regulation :≤1%
Main power source output internal resistance: be less than or equal to 0.009 Europe when specified; Surpassing when specified is 0.3～1 Europe.
Efficient: 85%
Input voltage 600V is during output voltage 16.2V output current 25/.
Claims (5)
1; control of DC converting formula electric car and electric consumption on lighting source; it is characterized in that; it is a kind of PWM-type switching power supply of DC formula; it comprises main power source; accessory power supply and their three parts of common circuit; main power source be one by pulse-width modulation circuit; the brachium pontis drive circuit; mos field effect transistor itself that have damper diode with is the bridge-type circuit for power conversion of power device; output filter circuit and protective circuit connect a closed-loop system of formation successively; at pulse-width modulation circuit and brachium pontis drive circuit; respectively have between circuit for power conversion and the output filter circuit one every straight veins towards transformer; the guard signal of electric voltage over press or under-voltage and overcurrent or current limliting all passes through corresponding sampling element and takes out towards the former limit of transformer every straight veins from output; voltage and current overcurrent protection signal all produces an inhibit signal through a large time constant single stabilization delay circuit and is sent to pulse-width modulation circuit; after will suing for peace together with it, the main power source output voltage guard signal of being exported by photoelectric coupled device is sent to pulse-width modulation circuit again when the current limitation signal surpasses threshold values; the choke that can suppress its reversing impact electric current of all having connected on the power conversion apparatus of each arm; just discharge diode in parallel on each choke correspondingly; the power conversion apparatus of every arm with choke that it is gone here and there mutually on also respectively want the damper diode of the high pressure spike potential that the output of can releasing in parallel produces during towards the electric current commutation of transformer every straight veins; above-mentioned current transformer be as the current sample element be serially connected in output every straight veins towards the former limit of transformer; accessory power supply is a current-control type switching power supply that three tunnel outputs are arranged; its first via output is used for protective circuit and pulse-width modulation circuit; other two-way outputs are to two brachium pontis drive circuitry; main; the common circuit of auxilliary power supply inserts two of load reversal connection and is just going here and there diode by being used for anti-stopping power electrical network successively; but three grades of low pass filters are connected with the secondary capacitance-resistance filter of mid point dividing potential drop output and are constituted; above-mentioned low pass filter all is made up of common mode inductance and the electric capacity that is parallel with piezo-resistance for every grade; the breakdown voltage value of piezo-resistance is a hierarchical subtractive clustering; the pulse dc high voltage that comes the ultromotivity electrical network is from preventing that load reversal connection circuit place from adding; export by the final stage low pass filter; to the power supply of bridge-type circuit for power conversion, power to accessory power supply through behind the capacitance-resistance filter again.
2, according to the control of DC converting formula electric car and the electric consumption on lighting source of claim 1, it is characterized in that circuit for power conversion is that half-bridge is arm-type.
3, according to the control of DC converting formula electric car and the mains lighting supply of claim 1, it is characterized in that described main circuit input voltage sampling element is a bleeder circuit of drawing and linking to each other with current transformer one end again from first order capacitance-resistance filter high-pressure side.
4, according to the control of DC converting formula electric car and the electric consumption on lighting source of claim 1, it is characterized in that described output filter circuit is inductance one capacitive filters.
5, according to control of the DC converting formula electric car of claim 1 and mains lighting supply, it is characterized in that, in the described main power source output digital and Adjustable of also on photoelectric coupled device, having connected as voltage sampling element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91208367 CN2094151U (en) | 1991-05-24 | 1991-05-24 | Dc conversing power supply for lighting and controlling trolleys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91208367 CN2094151U (en) | 1991-05-24 | 1991-05-24 | Dc conversing power supply for lighting and controlling trolleys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2094151U true CN2094151U (en) | 1992-01-22 |
Family
ID=4917603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91208367 Withdrawn CN2094151U (en) | 1991-05-24 | 1991-05-24 | Dc conversing power supply for lighting and controlling trolleys |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2094151U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197535B (en) * | 2006-09-29 | 2012-02-29 | 英特尔公司 | Multiple output voltage regulator |
-
1991
- 1991-05-24 CN CN 91208367 patent/CN2094151U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197535B (en) * | 2006-09-29 | 2012-02-29 | 英特尔公司 | Multiple output voltage regulator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |