JPH0624398U - Speed limiter and speed governor for series excitation motor - Google Patents

Abstract

(57) [Summary] [Purpose] A speed limiter and speed governor for a series excitation motor that limits the increase in speed when the motor is lightly loaded, prevents noise from the transmission unit due to high speed, and protects the transmission unit from damage. [Structure] After connecting the magnetic field coil and the armature in series, they are connected in parallel to the power supply, and after connecting the magnetic field auxiliary winding wound with the same polarity as the magnetic field coil and the pressure limiting shunt unit in series, The voltage detection circuit that connects the magnetic field coil, the input end of the motor power supply or both ends of the armature in parallel, and controls the limiting pressure shunt unit in response to the voltage of the armature is composed of a resistor or other voltage detection unit, and The detection circuit is connected in parallel to both ends of the armature.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a speed limiter and speed governor for a series excitation motor.

[0002]

[Prior art]

 In a conventional series excitation motor, the armature voltage increases when the load is light, the current passing through the magnetic field decreases, and when the magnetic field current decreases, the magnetic conduction weakens and the speed increases.

[0003]

[Problems to be solved by the device]

 Therefore, in the operation of this type of large-sized series excitation motor with an air load, there is a risk that the motor will be disassembled. On the other hand, small series-excited motors used in electric tools generally limit the increase in speed due to the friction of the load gears.However, in the case of an empty load, high-speed noise is generated, as well as wear of bearings and wear of gears. The transmission unit will be damaged.

The object of the present invention is to control the speed of the motor by controlling the pressure limiting and shunting unit and the magnetic field auxiliary winding when the voltage of the armature exceeds the set value, and control the speed of the motor. It is an object of the present invention to provide a speed limiter and speed governor for a series excitation motor that prevents noise of the transmission unit and protects the transmission unit from damage.

[0005]

[Means for Solving the Problems]

 The speed limiter and speed governor of the series excitation motor according to the present invention is constructed by connecting the magnetic field coil and the armature in series, and then connecting them in parallel to the power supply and the magnetic field auxiliary winding wound with the same polarity as the magnetic field coil. A voltage detection circuit that controls the pressure limiting and shunting unit in response to the voltage of the armature after connecting it in series with the pressure limiting and shunting unit and then connecting it in parallel to the magnetic field coil, the input end of the motor power supply or both ends of the armature. Is composed of a resistor or other voltage detection unit, and the voltage detection circuit is connected in parallel to both ends of the armature.

[0006]

【Example】

 FIG. 1 is a circuit diagram of an apparatus embodying the present invention. The illustrated serial excitation motor of the present invention can be driven by receiving alternating current, direct current or pulsating direct current, and its constitution is as follows.

Reference numeral F1 is a magnetic field coil, and A1 is an armature, which are connected in series and then connected in parallel to a power source to form one series excitation motor, or a double excitation motor including a double excitation coil. Make up.

The pressure limiting shunt unit 101 and the magnetic field auxiliary winding F101 are connected in series, and this shunt unit 101 is determined according to the property of the power source. In the case of an AC power source, a bidirectional gate fluid (triac) or an efficiency transistor is used. It can be configured by combining with. For pulsating direct current, it can consist of a gate fluid or an efficiency transistor. For direct current, it is composed of efficiency transistors. The magnetic field auxiliary winding F101 and the magnetic field F1 are wound with the same polarity, and are connected in series with the pressure limiting and diversion unit 101 and then in parallel with the magnetic field F1 (see FIG. 2) or the input of the power supply of the motor. Either wire the ends in parallel (as shown in FIG. 3) or wire both ends of the armature A1 (as shown in FIG. 1) in parallel.

The voltage detection circuit 102 is a voltage detector composed of a resistance or other voltage detection unit, and responds to the end pressure of the armature with a proportional voltage to control the efficiency shunt unit, or is composed of a resistance capacitor. Then, a proportional reaction is performed with respect to the AC voltage of the armature, or the shunt unit is controlled directly or through photoelectric engagement or with an electromagnetic engagement unit.

FIG. 4 shows a photoelectric engagement unit or an electromagnetic engagement unit, which is an embodiment in which a separation type engagement surface is provided between the voltage detection circuit and the pressure limiting and diversion unit. Reference numeral 104 denotes an isolated engagement surface, and the pressure limiting / shunting unit 101 and the magnetic field auxiliary winding F101 are connected in parallel with the motor, or are connected in parallel with the magnetic field series excitation winding of the motor, or You can choose to wire in parallel with the child.

The resistance of the voltage detection circuit can be changed to a variable resistance or a stepped resistance, and the proportional relationship of the armature voltage can be adjusted to adjust the maximum limit value of the armature. I do.

In the above circuit, when the motor is lightly loaded and the speed increases, the voltage across the armature also increases accordingly. When the armature voltage exceeds the conduction voltage of the voltage limiting and shunting unit, the shunt current passes through the voltage limiting and shunting unit and the magnetic field auxiliary winding connected in series to increase the strength of the magnetic field and to excite the series excitation. (Alternatively, double excitation) Limit the continuous increase in motor speed. The pressure-limiting diversion unit 101 is composed of the following various circuit units depending on the form of the driving power supply.

FIG. 5 shows an example of a speed limiting circuit in which a bidirectional silicon control gate fluid TRIAC1 is used as a shunt unit and a resistor connected in series is used as a voltage detection circuit. The configuration is as follows. Is.

After the shunt unit of the bidirectional silicon control gate fluid TRIAC1 and the magnetic field auxiliary winding F 101 are connected in series, both input power sources of the motor and both ends of the armature are connected in parallel. The voltage detection circuit constitutes a voltage detection circuit by connecting a pair of resistors R1 and R2 in series, and is connected in parallel to both ends of the armature. After connecting a pair of Zener diodes ZD1 and ZD2 in series in opposite directions, one end is connected to the gate pole of a bidirectional silicon control gate fluid TRIAC1 and the other end is connected to a pair of resistors R1 and R2 of the above voltage sensing circuit. When connecting the photoelectric engagement unit or the electromagnetic engagement unit as an isolation type engagement surface between the voltage detection circuit and the pressure limiting and shunting unit, connect it to the intermediate point of the above pressure limiting and shunting unit. The magnetic field auxiliary winding can be connected in parallel with the motor or in parallel with the armature.This circuit is applicable to AC or pulsating DC power supply, and the above-mentioned pressure limit detection resistance changes. If the resistance is changed to the maximum resistance, the proportional relationship between the midpoint of the series connection and the armature end pressure can be adjusted to adjust the maximum speed limit of the armature.

FIG. 6 shows a configuration in which a bidirectional silicon control gate fluid TRIAC1 of a shunt unit and a magnetic field auxiliary winding F101 are connected in series, and a resistor R1 and a capacitor C connected in series constitute a voltage detection circuit. This is an example of a high speed circuit, and its configuration is as follows.

After the main shunt unit of the bidirectional silicon control gate fluid TRIAC1 and the magnetic field auxiliary winding F101 are connected in series, they are connected in parallel to both ends of the armature. In the voltage detection circuit, a resistor R1 and a capacitor C1 are connected in series to form a voltage detection circuit, which is connected in parallel to both ends of the armature. One end of the trigger diode DIAC1 is connected to the gate electrode of the bidirectional silicon control gate fluid, and the other end is connected to the resistance of the voltage detection circuit and the direct connection point of the capacitor to detect the voltage with the photoelectric engagement unit or electromagnetic engagement unit. When a separate engagement surface is constructed between the circuit and the pressure limiting / shunting unit, the above-mentioned pressure limiting / shunting unit and the magnetic field auxiliary winding are connected in parallel to the motor, or the motor magnetic field series excitation is performed. It is possible to choose to connect in parallel to the winding or in parallel to the armature.This circuit is applied to an AC power supply, and the resistance of the above voltage detection circuit can be changed (or, The maximum speed limit of the armature can be adjusted when the capacitor value is changed to one that can be switched.

7 shows a bridge type rectifier, a silicon control gate fluid SCR1 and a magnetic field auxiliary winding F101 connected in series and then connected in parallel to both ends of an armature to form a shunt unit. This is an example of a speed limiting circuit in which a voltage detection circuit is configured by resistors R1 and R2 connected in series with each other, and the configuration thereof is as follows.

The cross point of the bridge type rectifying circuit of the main shunting unit composed of the silicon control gate fluid SCR1 and the full wave rectifying circuit consisting of the diodes D1, D2, D3 and D4 is connected in series to the magnetic field auxiliary winding. , Connect in parallel to both ends of the armature. Silicon control The anode (A) of the gate fluid SCR1 is connected to the positive output end of the bridge rectifier circuit, the negative electrode (K) is connected to the negative end of the bridge rectifier circuit, and the gate electrode (G) and cathode (K). If necessary, the protective shunt resistor R201 is connected in parallel, and the input end of the gate electrode is connected in series to the protective diode D201 in the forward direction. In this voltage detection circuit, two resistors R1 and R2 are connected in series and then connected in parallel to the positive and negative ends of the bridge type rectifier circuit to form a voltage detection circuit. The midpoint of the series connection of the resistance R1 and the resistance R2 of the voltage detection circuit is connected to the gate electrode (G) of the silicon control gate fluid SCR1 to form the maximum speed limiting function of the electric machine. When the optoelectronic engagement unit or the electromagnetic engagement unit forms an isolated engagement surface between the voltage detection circuit and the pressure limiting and shunting unit, the pressure limiting and shunting unit and the magnetic field auxiliary winding are connected in parallel to the motor. It can be wired, connected in parallel with the magnetic field series excitation winding of the motor, or connected in parallel with the armature. This circuit applies to AC and pulsating DC power supplies. If the resistance of the above voltage detection circuit is changed to a variable resistance, the maximum speed limit value of the armature can be adjusted. When the power source is AC, the voltage detection circuit composed of both resistors of the tree machine can be replaced with the one composed of an induction diode (DIAC) and a resistance capacitor. As shown in FIG. 8, when this embodiment is applied to an AC power supply, a voltage detection speed limiting circuit is composed of a resistor R1, a capacitor C1 and one trigger diode DIAC1.

FIG. 9 shows a speed-limiting circuit in which a silicon control gate fluid SCR1 forming a shunt unit and a magnetic field auxiliary winding F101 are connected in series, and resistors connected in series form a voltage detection circuit. In this embodiment, the configuration is as follows.

After the main shunt unit of the silicon control gate fluid SCR1 and the magnetic field auxiliary winding F101 are connected in series, they are connected in parallel to both ends of the armature in the forward direction, that is, the anode (A) is the positive end. And connect the cathode (K) to the negative end. The voltage detection circuit is configured by connecting two resistors R1 and R2 in series, and is connected in parallel to both ends of the armature. The center point of the series connection between the resistors R1 and R2 and the silicon control gate fluid SCR1 are connected. The gate pole (G) conducts and constitutes the maximum speed limiting function of the armature. When the optoelectronic engagement unit or armature engagement unit forms a separate engagement surface between the voltage detection circuit and the pressure limiting and shunting unit, the above pressure limiting and shunting unit and the magnetic field auxiliary winding are connected to the motor. It can be connected in parallel, in parallel with the motor magnetic field series excitation winding, or in parallel with the armature. This circuit applies to pulsating DC power supplies. By changing the resistance of the above voltage detection circuit to a variable resistance and adjusting the proportional relationship between the midpoint of the series connection and the armature end pressure, the maximum speed limit value of the armature can be adjusted. You can

The one shown in FIG. 10 is a speed-limiting circuit in which an efficiency transistor and a bridge-type rectifier that form an AC unit are connected in series to a magnetic field auxiliary winding F101, and resistors that are connected in series form a voltage detection circuit. In this embodiment, the configuration is as follows.

A bridge type rectifier circuit consisting of an efficiency transistor Q1 and diodes D1, D2, D3, D4 is connected in series to a magnetic field auxiliary winding F101 to form a main shunt unit, and two AC poles of the bridge type rectifier circuit are formed. Is connected to both ends of the armature, and both legs of the collector pole (C) and emitter pole (E) of the efficiency transistor Q1 are in the forward direction, and the positive and negative output terminals of the bridge rectifier (collector when the efficiency transistor is NPN type). The pole is connected to the positive end, the emitter pole is connected to the negative end, and vice versa when the efficiency transistor is the PNP type), and its voltage detection circuit connects two resistors R1 and R2 in series. The bridge type rectifier is connected in parallel to the positive and negative output terminals. The midpoint of the series connection of the resistors R1 and R2 is connected to the base pole of the efficiency transistor so that the maximum speed limit value of the armature can be adjusted. When a separate engagement surface is configured between the voltage detection circuit and the pressure limiting and shunting unit with a photoelectric engagement unit or an electromagnetic engagement unit, the above-mentioned pressure limiting and shunting unit and the magnetic field auxiliary winding are connected to the motor. Can be connected in parallel with the motor, in parallel with the magnetic field series excitation winding of the motor, or in parallel with the armature. This circuit can be used with AC, DC or pulsating DC power supplies. Apply to. The maximum speed limit value of the armature can be adjusted by changing the resistance of the above voltage detection circuit to a variable resistance and adjusting the proportional relationship between the midpoint of the series connection of the resistance and the end pressure of the armature. it can.

FIG. 11 shows an embodiment of a speed limiting circuit in which the efficiency transistor of the shunt unit and the magnetic field auxiliary winding F101 are connected in series, and the voltage detection circuit is configured by the resistors connected in series. Yes, its structure is as follows.

After connecting the main shunting unit of the efficiency transistor Q1 and the magnetic field auxiliary winding F101 in series, both ends of the armature in the forward direction (when the efficiency transistor is the NPN type, the collector pole is connected to the positive end of the armature). Connect it, connect the emitter pole to the negative end of the electric machine, and connect it in parallel with the efficiency transistor when it is a PNP type) and in parallel with the flywheel diode D8 in the opposite direction. The voltage detection circuit is configured by connecting two resistors R1 and R2 in series with each other, and is connected in parallel to both ends of the armature. The midpoint of the series connection of resistors R1 and R2 is connected to the base pole of the efficiency transistor, which constitutes the maximum speed limiting function of the armature. In the optoelectronic engagement unit or electromagnetic engagement unit, when the isolation type engagement surface is configured between the voltage detection circuit and the pressure limiting shunt unit, the above pressure limiting shunt unit and the magnetic field auxiliary winding are connected in parallel with the motor. It can be wired, paralleled with the motor's magnetic field series excitation winding, or paralleled with the armature, and this circuit applies to DC or pulsating DC power supplies. By changing the resistance of the above voltage detection circuit to a variable resistance and adjusting the proportional relationship between the midpoint of the series connection of the resistance and the armature end pressure, the maximum speed limit of the electric machine can be adjusted. .

In the pressure limiting shunt unit of the magnetic field auxiliary winding of the serial connection shown in FIGS. 1 to 11, the magnetic field of the magnetic field auxiliary winding F101 and the series excitation magnetic field winding F1 enhances the action when the armature is overvoltage, and FIG. The effect of the series excitation motor will be described in comparison with FIG. FIG. 9 is an operation curve diagram of a conventional series excitation motor, and as shown in FIG. 9, its speed increases at light load. FIG. 10 shows a speed limit and a speed limit of a series excitation (or multiple excitation) motor which assists the winding by magnetic field control of armature end pressure of the present invention, which is composed of a pressure limiting shunt unit group and a magnetic field auxiliary winding connected in series. The operation curve diagram of the series excitation motor of the speed governor is shown.The voltage detection circuit controlling the shunt unit is always connected in parallel to both ends of the armature, so the speed of the series excitation motor (or double excitation motor) is When it rises, the voltage across the armature also rises, but when it rises to the detection point of the voltage detection circuit, it outputs so that the shunt unit can be driven, and when the resistance of the shunt unit is lowered, the The path current passes through the magnetic field auxiliary winding F101 to increase the magnetic field and reduce the rotation speed of the motor. In order to accelerate this reaction, a quick transistor or a shunt unit for the gate fluid can be adopted, and an expansion circuit can be installed between the voltage detection circuit and the shunt unit to increase the reaction speed.

[0026]

[Effect of device]

 The present invention connects the differential pressure detection unit in parallel to both ends of the armature of the series excitation (or double excitation) motor, controls the shunt unit of the auxiliary magnetic field winding connected in series, and drives by overspeed. Prevent the damage and noise of the generated transmission unit, and adjust the proportional relationship between the output point of the voltage detection circuit and the armature voltage by the variable resistance (or step resistance) or the variable capacitor (or step capacitor). As a result, a speed control function that can control the maximum rotation speed of the motor is obtained, so that the motor can be controlled reliably.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a speed limiter and speed governor of a series excitation motor that assists winding by magnetic field control of armature end pressure of the present invention.

FIG. 2 is a circuit diagram of an embodiment in which the magnetic field auxiliary winding of the present invention is connected in series with the voltage limiting unit and then connected in parallel with the magnetic field.

FIG. 3 is a circuit diagram of an embodiment in which the magnetic field auxiliary winding of the present invention is connected in series to the voltage limiting unit and then connected in parallel to the power input terminal of the motor.

FIG. 4 is a circuit diagram of an embodiment in which a separate engagement surface between a voltage detection circuit and a pressure limiting and shunting unit is configured by the photoelectric engagement unit or the electromagnetic engagement unit of the present invention.

FIG. 5 is a circuit diagram of a speed limiting device in which a bidirectional silicon control gate fluid of the present invention constitutes a shunt unit and a voltage detection circuit is constituted by resistors connected in series.

FIG. 6 is a circuit diagram of a speed limiting device in which a bidirectional silicon control gate fluid of the present invention constitutes a shunt unit, and a resistor and a capacitor are connected in series to form a voltage detection circuit.

FIG. 7 is a circuit diagram of a speed limiting device in which a bridge type rectifier of the present invention and a silicon control gate fluid constitute a shunt unit, and resistors are connected in series to form a voltage detection circuit.

FIG. 8 is a circuit diagram of a speed limiting device having a voltage detection circuit including a resistor, a capacitor, and a trigger diode applied to the AC power supply of the present invention.

FIG. 9 is a circuit diagram of a speed limiting device in which a silicon control gate fluid of the present invention constitutes a shunt unit and resistors are connected in series to form a voltage detection circuit.

FIG. 10 is a circuit diagram of a speed limiting device in which the efficiency transistor of the present invention and a bridge rectifier are combined to form a shunt unit, and resistors are connected in series to form a voltage detection circuit.

FIG. 11 is a circuit diagram of a speed limiting device in which a voltage dividing circuit is configured by forming a shunt unit with the efficiency transistor of the present invention and connecting resistors in series.

FIG. 12 is an operation curve diagram of a conventional series excitation motor.

FIG. 13 is an operation curve diagram of a series excitation motor equipped with the pressure limiting and diversion unit of the present invention.

[Explanation of symbols]

 A1 Armature F1 Magnetic field coil F101 Magnetic field auxiliary winding 101 Pressure limiting shunt unit 102 Voltage detection circuit 104 Isolation type engagement surface TRIAC1 Bidirectional silicon control gate fluid R1, R2 Resistor ZD1, ZD2 Zener diode C1 Capacitor DIAC1 Trigger diode D1, D2 D3, D4 Diode SCR1 Silicon control gate fluid D201 Protection diode R201 Protection shunt resistance Q1 Efficiency transistor D8 Flywheel diode

Claims (7)

[Scope of utility model registration request] 1. When the end pressure of the armature exceeds one set value by a voltage detection circuit installed at both ends of the armature,
In a speed limiter and speed governor of a series excitation motor, which controls the pressure limiting and shunting unit to cause conduction, the winding enhances the strength of the magnetic field, and the winding is assisted by magnetic field control of the armature voltage that limits the speed of the motor. , After connecting the magnetic field coil in series to the armature, connect it in parallel to the power supply, wind the magnetic field auxiliary winding with the same polarity as the magnetic field coil, and connect it in series with the pressure limiting and diversion unit, then connect the magnetic field coil and the motor power supply. A voltage detection circuit that is connected in parallel to the input end or both ends of the armature and that controls the pressure limiting and shunt unit in response to the voltage of the armature is composed of a resistor or other voltage detection unit, and is connected to both ends of the armature. A speed limiter and speed governor for a series excitation motor, which are connected in parallel. 2. A speed limiter of a series excitation motor for assisting winding by magnetic field control of armature voltage, wherein a pressure limiting shunt unit is constituted by a bidirectional silicon control gate fluid, and a voltage detection circuit is constituted by a resistance connected in series. In the speed governor, after connecting the pressure limiting shunt unit of the bidirectional silicon control gate fluid in series with the magnetic field auxiliary winding, connect them in parallel to both input power sources of the motor or both ends of the armature, and connect the two resistors in series. After connecting the voltage detection circuit configured by connecting in parallel to both ends of the armature and connecting two Zener diodes in series in opposite directions, connect one end to the gate electrode of the bidirectional silicon control gate fluid, and The end is connected to the midpoint of the series connection of the two resistors of the voltage detection circuit, and the photoelectric engagement unit or electromagnetic engagement unit is connected between the voltage detection circuit and the pressure limiting and shunt unit. Form a separate engagement surface and connect the pressure limiting shunt unit and magnetic field auxiliary winding in parallel to the motor, or in parallel with the series excitation winding of the magnetic field coil of the motor, or in parallel with the armature. 2. The speed limiter and speed governor according to claim 1, wherein connection to the above is selectable. 3. A magnetic field control of an armature voltage in which a bidirectional silicon control gate fluid of a pressure limiting and shunt unit and a magnetic field auxiliary winding are connected in series, and a voltage detection circuit is constituted by a resistor and a capacitor connected in series with each other. In the speed limiter and speed governor of a series excitation motor that assists the winding, after connecting the pressure limiting shunt unit of the bidirectional silicon control gate fluid in series to the magnetic field auxiliary winding, it is connected in parallel to both ends of the armature to And a capacitor are connected in series to connect a voltage detection circuit in parallel to both ends of the armature, one end of the trigger diode is connected to the gate electrode of the bidirectional silicon control gate fluid, and the other end is the resistance of the voltage detection circuit. It is connected to the middle point of the series connection between the capacitor and the capacitor, and is separated by a photoelectric engagement unit or an electromagnetic engagement unit between the voltage detection circuit and the pressure limiting and shunt unit. Forming a mating surface and connecting the pressure limiting shunt unit and magnetic field auxiliary winding in parallel to the motor, connecting in parallel with the magnetic field series excitation winding of the motor, or connecting in parallel with the armature The speed limiter and speed governor according to claim 1, which is enabled. 4. A voltage limiting and shunting unit composed of a bridge rectifier and a silicon control gate fluid is connected in series to the magnetic field auxiliary winding and then connected in parallel to both ends of the armature, and resistors are connected in series to each other to form a voltage. In a speed limiter and speed governor of a series excitation motor that assists winding by magnetic field control of armature end pressure that constitutes detection dissociation, a pressure limiting shunt composed of a silicon control gate fluid and a full-wave rectification circuit composed of a diode. The AC connection pole of the bridge type rectifier circuit of the unit is connected in series to the auxiliary winding of the magnetic field and connected in parallel to both ends of the electric machine, and the anode of the silicon control gate fluid is connected to the positive output end of the bridge type rectifier circuit. Connect the cathode to the negative end of the bridge rectifier circuit, connect the gate pole and cathode in parallel with the protective shunt resistor, and connect the input end of the gate pole to the forward protection diode. Connect in series and connect two resistors in series, and connect in parallel to the positive and negative ends of the bridge rectifier to form a voltage detection circuit. The middle point of the series connection of the resistors in the voltage detection circuit is the silicon control gate fluid. It is connected to the gate pole, and a separate engagement surface is formed between the voltage detection circuit and the pressure limiting and shunting unit by the photoelectric engagement unit and the electromagnetic engagement unit, and the pressure limiting and shunting unit and the magnetic field auxiliary winding are connected to the motor. 2. The speed limiter and speed governor according to claim 1, wherein connection can be made in parallel, in parallel with a magnetic field series excitation winding of a motor, or in parallel with an armature. 5. A winding is provided by magnetic field control of armature end pressure in which a silicon control gate fluid of a pressure limiting and shunt unit is connected in series to a magnetic field auxiliary winding, and a voltage detection circuit is constituted by two resistors connected in series. In the speed limiter and speed governor of the series excitation motor that assists the, after connecting the pressure limiting shunt unit of the silicon control gate fluid to the magnetic field auxiliary winding in series,
Wire in parallel to both ends of the armature in the forward direction, connect the anode of the silicon control gate fluid to the positive end, connect the cathode to the negative end,
A voltage detection circuit configured by connecting two resistors in series is connected in parallel to both ends of the armature, and the midpoint of the series connection of the resistors of the voltage detection circuit and the gate electrode of the silicon control gate fluid are electrically connected to each other. A separate engagement surface is formed between the detection circuit and the pressure limiting and shunting unit with a photoelectric engaging unit or an electromagnetic engaging unit to connect the pressure limiting and shunting unit and the magnetic field auxiliary winding in parallel or in parallel with the armature. 2. The speed limiter and speed governor according to claim 1, wherein connection to the above is selectable. 6. The magnetic field control of the armature end pressure, wherein the efficiency transistor of the voltage limiting unit and the bridge type rectifier are connected in series to the magnetic field auxiliary winding, and a voltage detection circuit is constituted by two resistors connected in series. In a speed limiter and speed governor of a series excitation motor that assists the winding, a efficiency limiting transistor and a bridge type rectifier circuit composed of a diode are connected in series to the magnetic field auxiliary winding to form a pressure limiting and diversion unit. Connect both AC ends of the bridge type rectifier circuit of the shunt unit in parallel to both ends of the armature, and connect the collector and emic poles of the efficiency transistor in the forward direction in parallel to the positive and negative output ends of the bridge type rectifier, and connect two resistors. Connect the voltage detection circuit configured by connecting in series to the positive and negative output terminals of the bridge rectifier, and connect the midpoint of the series connection of the resistance to the base pole of the efficiency transistor. , Between the voltage detection circuit and the pressure limiting and shunting unit, a photoelectrically-engaged unit or an electromagnetically-engaged unit is connected in parallel with the motor, or in parallel with the motor magnetic field series excitation winding. Alternatively, the speed limiter and speed governor according to claim 1, wherein connection to the armature in parallel is selectable. 7. An efficiency transistor and a magnetic field auxiliary winding of a current limiting and shunt unit are connected in series, and are connected in series to each other.
In a speed limiter and speed governor of a series excitation motor that assists the winding by controlling the magnetic field of the armature end pressure that configures a voltage detection circuit with two resistors, the pressure limiting shunt unit of the efficiency transistor and the magnetic field auxiliary winding are connected in series. After connecting, the voltage detection circuit is connected in parallel to both ends of the armature in the forward direction, the flywheel diode is connected to the efficiency transistor in parallel in the reverse direction, and two resistors are connected in series to each other. Are connected in parallel to both ends of, and the midpoint of the series connection of two resistors is connected to the base pole of the efficiency transistor, and a photoelectric engagement unit or an electromagnetic engagement unit is provided between the voltage detection circuit and the pressure limiting and shunt unit. A separate engagement surface is formed to connect the pressure limiting shunt unit and the magnetic field auxiliary winding in parallel with the motor, or the magnetic field series excitation winding of the motor is connected in parallel with the motor. Limited speed and governor device according to claim 1 which enables choose to connected in parallel with the armature.