TW200306058A - DC power supply apparatus - Google Patents

Abstract

The present invention provides a DC power supply apparatus of electromagnetic brake capable of operating the electromagnetic brake in even shorter time than that of the conventional example even when the constitution is small. The DC power supply apparatus 2A of electromagnetic brake includes the followings: half-wave rectification circuit 100, which is composed of the rectification diode 23 and the flywheel diode 24; a voltage comparison circuit 200, which is composed of transistor 27, Zener diode 31, and resistor 32, 33, 34; a charging circuit 300, which is composed of diode 26, capacitor 30, and resistor 35; and FET 28, which connects output of the charging circuit 300 between gate and source. When the voltage Ea obtained by half-wave rectification through the half-wave rectification circuit 100 is higher than the criterion voltage, the charging voltage of the capacitor 30 is for charging, and when it is lower than the criterion voltage, the charging voltage of the capacitor 30 is for discharging. The charging voltage of the capacitor 30 is added to the FET28 that is used to control the termination of braking current I supplied to the electromagnetic brake 3.

Description

200306058

2098-5463-PF (Nl) ptd Page 5 200306058

Device 2 0 A was rectified by lightning, clothes 3 were excited and braked on the basin; when the electromagnetic brake 3 was activated, once the electromagnetic brake was excited, Leiban was released. The coil of the electromagnetic contactor 13 is th m ^ 4 The auxiliary contact 1 3b of the contactor 13 is closed. Even if the coil is opened, the coil of the electromagnetic contactor 13 continues to be excited, and the motor 4 continues to rotate. Therefore, as long as the _ / excitation switch 12 is pressed, the coil / use button 3 of the electromagnetic contactor 13 and the direct current for the electromagnetic brake are turned off, and the electromagnetic braking power is cut off. ϋΑ and the motor 4 are produced from the terminals υ, ν, and w of the AC that are generated at the terminals of the motor 4 between the 4 and the + stop. The DC power supply device 20A for positive hair is produced, =: the pressure is applied to the electromagnetic brake. Time will change as the time changes; For example, in the stopping position of the moving cylinder with a brake check 0, the inertia will be greater: the speed reducer or electrical deviation of the movement, and the position will be generated when the descent is stopped during the lifting operation. The time until the actuator 3 moves becomes longer and the inertial cow-of / sacrifice 'is stopped until the electromagnetic stop is stopped. During the lifting operation, the distance becomes longer and the distance is 5 until the electromagnetic brake 3 is activated. The problem of the rising of the taxi from the stop to the original stop position. It is only unable to reach. Figure 13 shows the structure of the electromagnetic brake acting magnetic brake device (second conventional example). The conventional electricity used to speed up the movement is the same or the same part is given to the same: Figure 1 3 In FIG. 11 and FIG. 11, the electromagnetic contactor 14 and its contact point 1 4 q% are followed by the second conventional example, and the operation will be described. 〇 !, currency one S known examples. Requirement—Press the start button switch 200306058 Description of the invention (3) J, the coils of the electromagnetic contactors 13, 14 are excited, and their contacts 13a, 14a are closed, and the current flows in the motor 4, and at the same time The rectified current of the electromagnetic brake DC power supply device 20A flows to the electromagnetic brake 3, and the electromagnetic brake 3 is excited and its braking is released. π want the electromagnetic coil to be excited ', its auxiliary contact m is to close the switch 11 to open the' electromagnetic contactor 13, and the coil of the motor 4 continues to rotate. Therefore, as long as the use of excitation is stopped, the electromagnetic contactor 13 The coils of No. 14 and No. 4 series have been changed ... > The 3 'DC power supply device 20Λ for electromagnetic brakes, and the current power of the 4 series of motors are cut off. In the second conventional example, Ji Yu The terminals u, v, and w of the motor 4 are left as they are; the DC power supply device 20A is being used to stop the motor. Bran, ': weight is a diode that is not added to the electromagnetic brake source device 20A. Kawaguchi's DC power for electric brakes continues to flow, so until Lei Cheng took the f magnetic brake 3 series circulating current as a conventional example, it was short, but the time until the second to third action was resolved compared to the first. In addition, the problem of electromagnetic contact mi cannot be completely achieved with the brake-attached motor 10 :: 2 plus' ❿. It requires a lot of expenses in the wiring system of the electromagnetic contactor. Easy circuit configuration can be straightened. Therefore, in the first known The short electromagnetic brake is straight, the time until the magnetic brake is actuated. Figure 14 shows the development system that is expected to be installed; the known DC brake for electromagnetic brakes; the second-speed operation is developed. This third The configuration of the electromagnetic clothing of the known example (the third known example) DC power supply device for electric brake 20B series 200306058 V. Description of the invention (4) By: input terminals 202a, 202b; output terminals 202c, 202d; surge absorbing element 21 1,212; Diodes 213, 214, 215, 216; FET (Fie 1 d Effect Transistor) 218; Half-wave rectifier circuit 221; Comparator power supply circuit 222; Gate drive power supply circuit 223; Input power supply is open circuit The detection charge / discharge circuit 2 2 4; the comparator 2 2 5; and the interrogation driver circuit 2 2 6. The half-wave rectifier circuit 2 2 1 rectifies the input AC voltage and outputs the braking current I. For the comparator The power circuit 222 is composed of a resistor, a zener diode, and a capacitor. The half-wave rectifier circuit 2 2 1 and the diode 2 1 5 and 2 1 6 convert the AC voltage to a full-wave rectified voltage. For comparator, in circuit 222 The resistance is stepped down, and a DC voltage is supplied to the comparator 2 through a Zener diode and a capacitor. The gate drive power supply circuit 223 is composed of a resistor, a Zener diode, and a capacitor. The voltage after the word wave is positive; the voltage of the gate drive power supply circuit 2 2 3 is used: the second is the IV voltage, and the Zener diode voltage to mm is used for the gate circuit. Circuit input :::: The charging and discharging circuit m for road detection contains 2 charge and discharge circuits. "The second round of power supply is used to start charging at the same time. After charging, the input power is after the electric power cable of the brothers and sisters. 2 When the output voltage 'Va' is lowered for a certain period of time, it is reversed from the two lower levels of the input power core J level. Comparator 225 voltage Ea, Eb level ',,: ,, crazy, then the gate output circuit 224 in the two output sequence from the charge and discharge circuit 224 X section, the level of the knife, Eb level is reversed The timing driving circuit 22 6 is configured to rotate to the gate driving circuit 226. Gate, A ★ When the open circuit signal is input,

Page 8 200306058 V. Description of the invention (5) The gate voltage supplied by the gate drive power supply circuit 223 is positioned at 0 V, and the FET 2 1 8 is turned off and the braking current 1 is cut off. In this third conventional example, the DC power supply device 20B for an electromagnetic brake has a large number of parts and a large outer shape. In order to be accommodated in a motor terminal box, a very large motor terminal box is required. In particular, since a large motor terminal box cannot be installed in a small motor system, as shown in FIG. 15, the DC power supply device 20B for an electromagnetic brake must not be accommodated in a motor terminal box but must be accommodated in a control panel. . Therefore, it is necessary to apply braking wiring between the motor terminal box and the control panel, and there is a problem of so-called cost. Therefore, the development of a small DC power supply device for an electromagnetic brake, such as a motor terminal 4 box that can be accommodated in a small motor, is expected. Fig. 16 is a structural diagram showing a conventional electromagnetic brake device (a fourth conventional example) when a motor, an electromagnetic brake, and a DC power supply device for an electromagnetic brake are used at different voltages. In FIG. 16, the same or same parts as those in FIG. 13 are given the same numbers. However, the motor 4 is used for AC 400 V, and the electromagnetic brake 3 and the DC power supply device 20 A for electromagnetic brake are used for AC 2 00 V. In the half-wave rectifier circuit of the DC brake power supply device 20A shown in Fig. 12, when the input voltage is AC 20 0 V, the output voltage is DC 90 V. Therefore, the coil of the electromagnetic actuator 3 is for DC 90V. Since the input voltage of the DC brake power supply device 20A for electromagnetic brake is AC 2 0 0V, in the fourth conventional example, the input voltage AC 3 0 0 V of the three-phase AC power supply can be stepped down to a drop of AC 2 0 0 V. The transformer 5 is added to the second conventional example.

2098-5463-PF (Nl) .ptd Page 9 200306058 V. Description of the invention (6) " ί 1 Explain the action. As long as the start button switch M is pressed, the coils of the w contactors 13, 14 are excited, and the main contact 13a is a three-phase AC power source with an AC 400V, and the current flows in the motor 4. : "? Turn off, and from the step-down transformer 5 to reduce the AC 400V ^ father power source to flow the current in the electromagnetic brake crying with the first crying current for the flowing magnetic electric" DC power supply device 20㈣ release its brake. σrequired :: Actuator 3, electromagnetic brake 3 are excited and release crying 13 H. Use the button switch 11 to open. 'Electromagnetic contacts 13 and 14 are coils to continue to be excited. The coils of electromagnetic contact cries 13 and 14 become non-excitation. The electromagnetic gas U3 power supply device 20A and ^ up to 4 # 广 上 & 's electromagnetic brake is a direct current such as & Power is cut off. In the case of β-Hidi's four learning, plus the feather point (with the electromagnetic contact crying μ 4 of the $ $ & π 4 brother-Bai Zhili's problems increase), there will be an increase in the number of wiring and cost The large scale caused by the increase in cost, wiring, and cost # \ = is shown in Figure 17 except that it should be eliminated in the figure. In FIG. 17, the diagram J 6 A η °. The constitution of the (fifth known example of the horse) is inadequate ... ^ Solid 16 is the same or the same part. In the fifth known example, the system structure: Department, · ,. And one-phase voltage (the voltage of the motor 4 at the neutral point N of the motor 4, the voltage of the motor 4 at the neutral point N, the line D, and the line D) is supplied to the electromagnetic brake =: & -DC power supply device 20A for phase Λ. … When the source is K 4 °° V, the "generation point" of motor 4 Page 10 1_ 200306058 V. Description of the invention (7) Voltage between N and R phase of three-phase AC power supply

23〇V (= 40 0 // 3V), and when the voltage is about 20A AC DC power supply device, Fu Sunsun broke into the electromagnetic brake to cry the electromagnetic brake in a short time 3 ^ brake It is about DC 103V. Here, the brake of ^ d is released. When the electromagnetic brake 3 for DC 90V is connected to Erikokou, the device 20A is used. Connected to DC power supply for electromagnetic brake * Using electric power = ?: 7 electromagnetic brake for 3 connected to electromagnetic brake… use straight ~ power supply for 20A for long-term use. Herein, the three-phase AC power source is ac: 〇. With v ::%, you need to make an electromagnetic brake write that happens to be DC 103V. There will also be problems in the aforementioned second conventional example (the increase in the number of wiring and the increase in cost due to the setting of the electromagnetic connection). Time 4 shows a conventional electromagnetic brake device (the sixth conventional < 1 drawing) except that the electromagnetic contact at the problem point of the fifth conventional example should be eliminated. The sixth conventional < 1 is shown in FIG. 18 and FIG. 17 The same number is assigned for the same or the same part. In the sixth conventional example, as in the first conventional example, σ is described as the electromagnetic contactor 3 to open and close the motor current and the braking current. Iron 'Constructed in the sixth conventional example, it is impossible to avoid the point in the first conventional example mentioned above: = said' point (due to the residual voltage, the stop position deviates until the electromagnetic brake is activated for a long time) .., ... [Inventive content] 〇〇 The present invention has been made in view of the relevant situation, so as to provide an early structure can also make the electromagnetic in a shorter time than the conventional example: ,,, simple machine operation DC power supply device for the purpose.

Page 11 2098-5463-PF (Nl) 200306058 _Explanation of the invention (8) The DC power supply device of the present invention is a DC power supply device that supplies a DC current based on the input and output to an external device. It includes: a rectifier circuit, which is characterized by half-wave integration of the aforementioned AC voltage in a comparison circuit, and compares the output voltage of the rectifier circuit with the reference voltage and the voltage; The comparison result of the voltage comparison circuit is used to reverse charge and discharge; the charge and discharge circuit is connected to its brake. The DC power source of the present invention makes the connection electromagnetic brake cry. When the source is cut off for an external device :::: Nissho cuts off the input electric FET of the DC power supply device. Therefore, "The braking current that L moves on the half-wave rectifier circuit is in the conventional electromagnetic brake. The electromagnetic brake is made in a shorter time than using the Kiki W and the corpse constituted by the half-wave rectifier circuit. In the case, more = electromagnetic brake: =; and i 'In the motor with a brake that combines the electromagnetic brake and the motor with the DC power supply p of the present invention, 2 residual electric power of the motor; two? Up to the same electromagnetic contactor to cut off, σ, and when the reference voltage is lower than i, it can also be cut off by the fet. The electromagnetic motor with brake can be cut in a shorter time. The method is as follows: ° The following description will be given to explain the present invention with reference to the drawings of Xu A, n Zhi Xing sad: Implementation mode) ^ Apparatus: 1 J 糸 Display of the relevant structure of the "pi Ming". In the figure : Yuedi's first embodiment of the electromagnetic brake port, 1 is a motor with a brake, and

Page 12 200306058 V. Description of the invention (9) " 一 · 一 ·-The brake motor 1 contains: the DC power supply device 2A for electromagnetic brake of the present invention (hereinafter, simply referred to as power supply device 2A), electromagnetic brake 3, ^ Terminals R and s of the motor 4. 3-phase AC power supply (not shown) are connected to terminals U, V, and W of the motor 4. Between the wiring between terminal R, terminal υ and wiring between terminal s and 'terminal V, the electromagnetic contactor 3 and the button switch for stop 丨 2 and the start button switch 11 and the auxiliary contact 13 b of the electromagnetic contactor 3 The parallel circuits are connected. The main contacts 1 3 a of the electromagnetic contactor J 3 are respectively provided on the wiring between the terminal R, the terminal U, the terminal s, the terminal v, and the wiring between the terminal T and the terminal W.

The power supply device 2A is connected to the wiring between the terminal r, the terminal u, and the wiring between the terminal S, and the terminal V. FIG. 2 is a circuit diagram of the power supply device 2 a of the present invention. The power supply t 2 A is composed of: input terminals 2 a, 2 b; output terminals 2 c, 2d; surge absorbing elements 21, 22; half-wave rectifier circuit 1 The voltage comparison circuit 200, the charge / discharge circuit 300, and the FET 28 are configured. The half-wave rectifier circuit 100 includes diodes 23 and 24. In addition, the diode 24 series (flywheel diode). The voltage comparison circuit 2000 includes a transistor 27, a zener diode 31, and resistors 32, 33, and 34. The charge / discharge circuit 300 includes: a diode 26; a capacitor 30; and a resistor 35.

Next, the operation will be explained. Figure 3 is a timing chart in the first embodiment. As soon as the start button switch 1 1 is pressed, the coil of the electromagnetic contactor 13 is excited, its main contact 3a is closed, and the current is the current flowing through the motor 4 ′ and rectified in the power supply device 2 A. To flow in the electromagnetic brake, the 3 'electromagnetic brake 3 series is excited to release its brake. As long as the coil with electromagnetic contact 1 3 is excited, the auxiliary contact of the electromagnetic contactor 3

2098-5463-PF (Nl) ptd Page 13 200306058 Fifth, the description of the invention (ίο) 13b is closed, even if the push-button switch for starting is open, the coil of the electromagnetic contactor 1 3 is continuously excited, and the motor 4 The system continues to rotate. As long as an AC voltage va is input between the input terminal 2a and the hole of the power supply device 2A, the half-wave rectification circuit _ uses the diode 23 to half-wave rectify its AC voltage v and output the rectified voltage Ea. . The voltage Ea output from the half-wave full-three-stream circuit 100 is added to the two ends of the resistors 32 and 33 connected in series in the voltage comparison circuit 2000. The voltage Ea is divided by the resistors 32 and 33. The divided voltage becomes more than the Zener voltage 1 of the Zener diode 31. As long as the following condition (丨) is satisfied, the transistor 2 is turned on and the voltage Ea is applied to the eight-collector system. The voltage Eb divided by the resistors 32 and 33 and cut off by the Zener voltage Ez is output (in Fig. 3 ^).

Eax {R33 / (R32 + R33)} ^ Ez + VBE 81… ⑴ However, R32: resistance value of resistor 32, R33: resistance value of resistor 33, VBE: base voltage of transistor 2 and 7 when turned on, as long as the half-wave rectifier circuit The voltage of 100 turns & In order to satisfy the following conditions, the transistor 27 is cut off (in Fig. 3). E: x (R33 / (R32 + R33)) < EZ + Vbe M… (2) The voltage output from the voltage comparison circuit 2 00 is applied to the charge and discharge circuit 300, and the current is passed through the diode 26 The resistor 35 and the capacitor cry 30. = The two capacitors 30 are charged, and the electricity shown in the following (3); Ec is output from the charge and discharge circuit 300 and is added to the gate of the FET 28 (in Fig. 3 ·· ^).

Edb-Vf… (3) 8 However, Vf: the forward voltage of diode 2 6 is charged as long as one of the electrodes 2 6-becomes non-conductive.

209S-:-; Page 14 200306058 V. Explanation of the invention (11) Electricity of the electric charge A1 of the container 30 > 1EC is to reduce the resistance 35 and discharge 'is added to the closed pole of the FET 28, therefore, in Figure 3 Of it. . It is large, and as long as the electrical material outputted into the circuit 100 is the electrical voltage of the electrode which changes again, the condition is ta2). . Is again the size shown in the above (3) (during such an operation in FIG. 3 (at t, t, +, gate of FIG. 3, the voltage at the gate of FET 28 £ fb is greater than 2) In addition, the threshold and threshold of the gate electrode and source voltage L1 MEt of the snow threshold P1 Zn δ, so that the FET 28 continues to be turned on. In the electromagnetic state, as long as the stop button is pressed, the I / r Λ ^ ^ ^ ^ # .tU3a ^, τ P,, ,, 1 up to 4 series and the power is cut off. In this example, the electromagnetic contact cries at the beginning of the system 3 Α, α ',, Θ The “Ts” mouth is to be cut off: The three-phase AC power supply is cut off. ~ Guang Er Γ The AC power supply is cut off, and the residual voltage of the motor 4 is inputted between the power supply device 2A and the input terminals 2a and 2b. When the six-current voltage Va is reduced, the voltage £ is also lowered, and the father is turned on, which also satisfies the above conditions (a2t :: r: pole body 23, and the transistor 27 is non-conductive :. As a result, The voltage I applied to the open electrode of the FET 28 continues: ::: When the ratio of the threshold and source voltage thresholds of the FET 28 is%, the FET 28 becomes non-conducting and passes through the diode n Low pole body 24 The braking current flowing through the electromagnetic brake 3—a in FIG. 3 te). In this case, when the AC voltage to the power supply device is cut off, the FET 28 is used to cut off the flow in Half-wave rectifier circuit

2098-5463-PF (Nl) ptd page 15 200306058 V. Description of the invention (12) Brake current of 1 00 bipolar body 23 or 24 ί. Therefore, the conventional electromagnetic brake for a half-wave rectifier circuit is used in the case of: K =, and the electromagnetic brake 3 can be operated in a shorter time. In addition, in the case of using the power supply device 2A of this example and the combined motor with a brake, because the motor 3 and the motor 4 contactor 13 cut off the electromagnetic brake 3 and the motor 4, the same electromagnetic connection If the voltage is lower than the reference voltage, the brake motor 10 is turned off, and the motor 10 with a brake is required to be removed from the motor 4. It can be more than two, so it is better than conventional practice. Because the magnetic contactor 13 is closed = the control system of the contactor and the brake ": J: J = U magnetic: ..., can be solved. Set and," or in the position of electric, flywheel The problem of deviation. The more rectified reference voltage is the voltage comparison circuit 2 0 0 = = = ::: electricity = charging. In lower occasions, the FE 28 and the resistance 35 are discharged. And will be connected to the pole and source; voltage: the charging voltage of the capacitor 30 between the poles is used as the basis of the per-cycle ratio; S 28 'and the voltage rectified by the half wave is & In the case of the south, 'FET 28 is to continue to be turned on, continued, then the capacitor cry = Γ = electrical | lower than the reference voltage is the limit value and can be cut; F ECG = lower than FET 28 "Electric power supply circuit is not two. Therefore, as in the third conventional example, the FET drive is used." Therefore, in the power supply device 2A of this example, it is 2098-546 · '-:: Page 16

200306058 V. Description of the invention (13) Compared with the third practice, the gate driver can be used to realize a compact structure that can be accommodated by using i, and f can solve the problem of so-called needs. In addition, the nano-voltage is used as the FET Zener diode 31% and added to the F E T 2 8 (second embodiment). FIG. 4 is a block diagram showing the structure. In the figure the same number. At the 14th pursuit of the first force ^ In the first implementation of the power supply device 2A, 13a is open when the residual voltage of the ear 4 is higher than the first embodiment, even when the first embodiment is more advanced> In the second case, although the motor 4 is known, it is not necessary to compare the power supply circuit, so the part source circuit is not. Therefore, even on small horses, Cha Ximin = Xier Ding Magnetic Brake for DC Electricity: 々Motor terminal box must also do this and motor terminals ,: Put Gu Na in the control panel, and the third practice of wiring It will be used in this reference mine + 10 9 «Earth voltage of the Zener diode 31 Qi 2 = 1 pole · source rated voltage: to reach the maximum voltage of the voltage comparison circuit 2000 There are two uses for the setting and regulation of the base voltage. In the second embodiment, the electromagnetic brake crying device of the second embodiment is provided with a part of the goalkeeper. In the "electrical contactor" and its contact form, although the residual voltage of the motor 4 is inputted, in this second embodiment, since the electric power is: the contact 14a of the [magnetic contactor "is also: Ma: It is input to the power supply setting 2A 1 so that it can be compared to reach the braking current 1 '. As a result, the electromagnetic brake 3 can be compared. Figure 5 is the second known example of the residual voltage of the closed electromagnetic contactor, which is 14 ^ ^ a in Coding, and is not input to the electromagnetic brake 200306058 5. The DC power supply device 20A for the invention description, but because of its A circulating current flows between the bipolar body 2 1 4 in the electromagnetic brake DC power supply device 2 A 4 and the electromagnetic brake 3, so that the circulating current causes the electromagnetic brake 3 to operate for a longer period of time. Since the circulating current can be cut off in the second embodiment, the electromagnetic brake 3 can be operated faster than the second conventional example. (Third Embodiment) Fig. 6 is a diagram showing the configuration of an electromagnetic brake device according to a third embodiment when the voltages used in the motor, the electromagnetic brake, and the electromagnetic DC power supply device are different. In Figure 6 '

Figure 1 shows that the same or the same part is given the same number. In # —: Human Tragedy 'is to supply the phase voltage (voltage between the horse's point N and the R phase of the three-phase AC power supply) of the star-shaped motor 4 and the DC power supply for the neutral actuator. The phase diagram of the device 2B (hereinafter simply referred to as thunder, ... = to electromagnetic .... Ran is a power supply device 2B) is a circuit diagram of the power supply device ⑼ of the present invention. It consists of: input terminals 2a, 2b; output terminals 2C, 2d; a 2B 2 1 and 2 2; a half-wave rectifier circuit 1 00; a voltage comparison circuit 2 0 ^ receiving element circuit 3 0 0; and FET 28 Make up. Half-wave rectifier circuit 100 people discharge electricity 23,24. Also, the diode 24 series (flywheel diode). Two = polar body 20 0 series contains: diode 25; transistor 27; capacitor 29 car parent-circuit body 31; and resistors 32, 33, 34. The charge-discharge circuit 3 is composed of eight diodes 26, a capacitor 26, and a resistor 35. 5Yes ・ Dipole

In the third embodiment, the AC voltage V between 1 and 2b will be described next. Figure 8 is a sequence diagram. As long as the input terminal 2 3 of the power supply device 2B

200306058 V. Description of the invention (15) To be input, “the half-wave rectification of the AC voltage Va by the half-wave rectifier circuit 100 ’s diode” is to be output. The voltage output by the half-wave jade teaching circuit 100 is a circuit which is added to a resistor 32 and a capacitor "connected in series with the resistor 32 connected in series by the voltage comparison circuit 200. The electric resistance is based on the parallel impedance of the resistor 32 and the capacitor 29 ^ and the resistance 33. The voltage 3e y is satisfied: the voltage Eax is the condition of the Bizener diode 31 which satisfies the following (4), then The crystal 27 is VI, and the collecting pole will be impedance ζ32, ζ33 to cut the lightning 餍 F that is clipped by the Zener voltage Εζ / a at & and laser Η Ib output (in W of Figure 8 The magnitude of the electric & Eb is shown in the following (5). DEZ However,

V

BE

V f25 (4)

V V

BE • The base voltage when the electric solar body 2 7 is on and the forward voltage Eb-Ez + VBE-vrR 5 (5) f25. However, VCE: the collector when the transistor 27 is on • The transmission is cut off from the half-wave rectifier circuit 100 (tbl in Fig. 8). ’、 The transistor 27 is

Eax < Ez + VBE

V f25 gives 300 to t output from the voltage ratio 0, and the diode 26 produces thunder, ±%, σ, and charge and discharge circuits. The capacitor 30 is connected to the electric valley as described in (7) below. Is 30. Because Ec becomes the output voltage C of the charging and discharging circuit 300, ”, the voltage is added to the gate of the FET 28 200306058 V. Description of the invention (16)

Eb-V (tal in Figure 8).泫 The output voltage of the charge and discharge circuit 30Q is higher than the threshold voltage I of the gate-source voltage of the FET 28. f26

However, if the forward voltage of V (7) f26 ·· diode 26 "satisfies the condition (6) above, the transistor 27 of the voltage comparison circuit 2 0 is cut off, and the voltage from the voltage comparison circuit 2 0 0 The output voltage, === becomes non-conducting. As a result, it is charged in the capacitor 30. The voltage E is equal to the resistance 35 and discharged, and the voltage M added to the gate of the FET 28 is reduced. The output voltage Ec is higher than the FET28FET; but the charge and discharge circuit 300E. The threshold voltage of the gate and source voltage of U8 is applied to the FET 2 μμ; μ + r- -1 , Et „,, f- -e; 8 ---- while crying at the electromagnetic brake; 3 production _ system private cl,, 'on, voltage Et, then FET = 2 = lower and lower MFET 28 threshold value thus : = Called in the picture. The pressure Ea is increased again, as long as = and the diode 23 is turned on, the transistor 27 is turned on, and # is added to # to meet the above condition of ⑷, which is higher than the threshold of m 28 The voltage Ec between the voltages E and 28 becomes the brake current flowing through the actuator 3 (^ in Fig. 8), and the 28 series is turned on. The electromagnetic brake current I is the frequency of each period of the period when the brake is turned off. Appears but does Where tdl) is the AC voltage Va degree, compared to crying for electromagnetic braking; dynamic: degree coefficient msec. Because the long DD d is the number of time required for the action +

2098- 5463-PF (\ Page 20 V. Description of the invention (17) msec is short, so no electromagnetic brake 3 is actuated during this period. By using the time constant of the resistance 35 and the capacitor 30 of 3 Ϊ 电 电 300 In order to make it change in time, the braking electric power can be changed: "The braking current in the electromagnetic brake 3" is connected to the input AC power frequency every 1 cycle only within a predetermined period: Figure ^ is cut off 'so The DC current (average value) flowing through the electromagnetic brake 3 is smaller than that of 20A as a direct current power source for a semi-turbid Li Jielei electromagnetic brake. "The conventional person's seat display of Fig. 12 is small. Therefore, Even if the device to be driven has an AC voltage higher than 200 ν, it can still flow two or eight voltages to a conventional DC power supply for electromagnetic brakes. 4 Set 20A field 5 as the equivalent DC current to the electromagnetic brake 3. Q m In this state, the main contact i3a of the electromagnetic contactor 13 is cut off from the AC power supply. In this example, the contactor 13 is opened in the cycle of FIG. If it is cut off from the AC power supply, the power supply is installed between the power supply =: and 2b. Residual voltage into the motor 4. If the output is 22, it will be reduced from the half-wave rectifier circuit 1. The output voltage Ea is also lowered, and the voltage comparison circuit 20 will make the diode ㈡ turn on. On the condition of (6 drops), the M transistor 27 is not conductive. As a result, it is added to the positive M

= The electric rail system of the pole continues to fall. When the threshold voltage E is lower than m 28, the 'FET 28 system becomes non-conducting and cuts off the flow of electricity. 200306058 V. Description of the invention (18)'-- —- Brake current I of magnetic brake 3 (te in Figure 8). In this example, the measures can be taken to change the time between the capacitor 30 and the resistor 35 by Lei v. _ /, The charging and discharging circuit of 2β, and the output voltage of the power supply device 2B can be changed to a determined discharging time, and the output voltage is lower. . Therefore, even if the voltage of the input power of the electromagnetic is different, the rated voltage of the electromagnetic brake 3 is the same as that of the source device 2B by using a straight /; IL power supply device. 4 and crying electromagnetic brake] ^. When it is cut off, the electromagnetic brake 3 is operated. ▲ Electromagnetic contact state 1 3 The motor is cut off at the respective electromagnetic contactor 4 :: The motor without the brake is installed in the i system: Ac 4〇v, electromagnetic Brake benefits 3. Attach the neutral point to the outside; the power motor 4 uses a star-shaped knot and the neutral point to input people; from the output of the terminal power supply device 2B of Ud // motor 4 phase, an electromagnetic brake can be used 3. Connected to AC power to open and close the motor 4 and electromagnetically move the magnetic contactor 13 from 400V because the power supply device 2B can be turned ψ 4 口 口 丄. The output of the t-method two half-wave rectified AC voltage is lower than the preset voltage of the electromagnetic brake. Therefore, the motor used for DC 90v! Can the middle system not require electricity? Set the AC_ for iB with a brake, magnetic contactor with a force port, and the required changes in the four examples. The motor with the brake is equipped with a neutral, matching table. In addition, the special electromagnetic brake 1 used in AC 400ν requires the manufacture of a brake motor as described in the fifth conventional example and can be used to break the attached electromagnetic brake for AC 400V. In addition, a large number of low-cost DC 90V can be added to use electromagnetic brakes for electromagnetic brakes.

2098-5463-PF (M Page 22 200306058 Description of the invention (19) The control circuit of the contactor and the wiring for braking can stop the motor with a brake at a high speed. Therefore, it can solve the problem of a motor with a brake in the device. The problem of the positional deviation described in the sixth conventional example in a speed reducer or an electric cylinder. (Fourth Embodiment) ^ Fig. 9 is a structural diagram showing an electromagnetic brake = f according to a fourth embodiment of the present invention. In FIG. 9, the same or the same part as that in FIG. 6 is used, and the mouth and the same number are the same. In the fourth embodiment, the electromagnetic contactor 14 and its contacts 14a are added to the third embodiment. In the third embodiment, 'even if the main contact 13a of the electromagnetic contactor 13 is f, the residual voltage of the motor 4 is input to the power supply device 2B, but it is input to the power supply device 2B. The residual voltage is to cut off the braking current without being fast. [As a result, the three times of the three-dimensional state can be used to move the electromagnetic brake 3 at a higher speed and higher speed. ^: Compared to the second embodiment, FIG. 1 is also available. It is the way of period τ4 in the fourth embodiment. Temple hearts two three-phase alternating sequence of FIG. In this embodiment, the middle line of the three-phase AC power supply is cut off) to be cut. As long as the current voltage va in period τ4 becomes ον, and below it, the cross voltage Ea between the input terminals 2a and 2b and the voltage comparison circuit 2000 are output from the half-wave rectifier circuit 100, and from the charge and discharge circuit 3 0 0 is: The output voltage Eb is 0V as usual. As the system continues to fall, it is lower than the FET; the output voltage (the voltage applied to the FET 28) Ec

28 is the time point when the braking current t is cut off at the 'limit voltage Et, FET, any t in FIG. 10). 200306058

V. Description of the invention (20) Even in the fifth conventional example, when the electromagnetic contact is closed, although the residual voltage of the motor 4 becomes a DC power supply device 20A for a field device that can be turned off by 1, 4, Between the electromagnetic brake and the electromagnetic brake 3, the time required for the turtle current to act on the diode 214 is longer due to this problem. In the case of a long silver current and the circulating current of the electromagnetic brake 3, compared with the second embodiment, the cutter 3 operates. Quickly make the electromagnetic system = Also, in the above example, it is used as a direct current for the electromagnetic brake ^ = DC power supply of the present invention, but it goes without saying that even if it is electric: the use of external equipment can be applied to the application of the present invention 2 Ji: "Other DC operations outside of the [invented effect] The DC power supply of the moon is installed. The operation is as detailed above: 2 3, structure, • Known example phase :: In the DC power supply device, That is, an external device such as Jay operates.

200306058 Brief Description of Drawings Figure 1 is a diagram showing the configuration of an electromagnetic brake device according to a first embodiment. Fig. 2 is a circuit diagram of an example of a DC power supply device for an electromagnetic brake according to the present invention. Fig. 3 is a timing chart of the electromagnetic brake device according to the first embodiment. Fig. 4 is a diagram showing the configuration of an electromagnetic brake device according to a second embodiment. Fig. 5 is a timing chart of the electromagnetic brake device in the second embodiment. Fig. 6 is a diagram showing the configuration of an electromagnetic brake device according to a third embodiment. FIG. 7 is a circuit diagram of another example of the DC power supply device for an electromagnetic brake of the present invention. Fig. 8 is a timing chart of the electromagnetic brake device according to the third embodiment. Fig. 9 is a diagram showing the configuration of an electromagnetic brake device according to a fourth embodiment. FIG. 10 is a timing chart of the electromagnetic brake device in the fourth embodiment. Fig. 11 is a block diagram showing a conventional electromagnetic brake device (first known example). Fig. 12 is a circuit diagram of an example of a conventional DC power supply device for an electromagnetic brake. Fig. 13 is a diagram showing a structure of a conventional electromagnetic brake device (a second conventional example). Fig. 14 is a circuit diagram of another example (the third conventional example) of a conventional DC power supply device for an electromagnetic brake.

2098-5463-PF (N1) ptd Page 25 200306058 Brief Description of Drawings Fig. 15 is a structural diagram showing a conventional electromagnetic brake device using a third conventional example of a DC power supply device for an electromagnetic brake. Fig. 16 is a block diagram showing a conventional electromagnetic brake device (a fourth conventional example). Fig. 17 shows a structure of a conventional electromagnetic brake device (a fifth conventional example). Fig. 18 is a block diagram showing a conventional electromagnetic brake device (sixth conventional example). [Symbols] 1 Motor with brake 2A, 2B Straight for electromagnetic brake 3 Electromagnetic brake 1 1 Push-button switch for starting 1 3, 1 4 Magnetic contactor 1 3 b Auxiliary contact 21 > 22 Surge absorbing element 24 2 Polar body (flywheel diode) 27 Transistor 29, 30 Capacitor 32, 33, 34, 35 Resistor 200 Voltage comparison circuit Current power supply device 4 Motor 1 2 Button switch for stop 1 3 a Main contact 1 4 a Contact 2 3 Diodes (rectifier diodes) 2 5, 2 6 diodes

28 FET 31 Zener Diode 1 0 0 Half-wave rectifier circuit 300 Charge / discharge circuit

2098-5463-PF (N1) ρ:-page 26

Claims (1)

200306058 6. Scope of patent application 1. A DC power supply device that supplies a DC current based on an input AC voltage to an external machine, which is characterized by including: a rectifier circuit for half-wave rectifying the aforementioned AC voltage; a voltage comparison circuit, Compare the output voltage of the rectifier circuit with the reference voltage; charge / discharge circuit, repeatedly charge / discharge according to the comparison result in the voltage comparison circuit; and field effect transistor 'the charge / discharge circuit is connected to its gate and source between. ‘ 2098-5463-PF (N1) ptd Page 27