TW502489B - Starting apparatus and method - Google Patents

Abstract

A kind of starting apparatus and method used in inductive circuit (such as motor) are disclosed in the present invention. The invention can be used to reduce the surge current generated when starting the inductive circuit. The starting apparatus includes a signal generator, which is electrically connected with the inductive circuit and generates the first signal in accordance with the signal output by the inductive circuit; a comparison circuit, which is electrically connected with the signal generator and is used to convert the first signal into the second signal so as to compare the second signal with a reference signal for generating a control signal; and a control device, which is electrically connected with the comparison circuit and the inductive circuit, and is used to receive the control signal so as to gradually increase the current inputted to the inductive circuit in accordance with the control signal such that the generated surge current when starting the inductive circuit is reduced.

Description

V. Description of the invention (1) Field of the invention The present invention relates to a surge current generated when a starting circuit of a starting circuit (such as a DC motor) is started. BACKGROUND OF THE INVENTION This is due to the arrangement of the circuit wiring. In the past, because there was no current in the design, this current often caused horses to add capacitors or varistors and other miscellaneous circuits to start the current in multiple stages or segments. For example, using multiple filters to modulate, PWM ) Signal, and then change the duty ratio (dutycyc 1 e) 'so that the average current wave width ratio of the motor to control the motor's rotation mode' in addition to high cost and set a great electrical sound, and repeatedly Reliability. This is the reason why this work is based on the experience and research and the cost and persistence of methods and methods. " The following are the methods and methods of this case, especially applied to inductors, and methods, which can reduce the inductance of f brushes and commutators and other machinery, generate a large surge current between thousands, and the performance of the power supply itself is not good. Therefore, it is an impulsive circuit to prevent damage to the surge or internal system. Some of them are used to supply the motor power protection circuit, or to start by expensive and complex methods to reduce the surge current and generate pulse width modulation (pulse width is output to the transistor. The PWM signal is used to make the transistor The switching interval changes accordingly, so you can change the pulse rate. However, in addition to the complexity of this multi-stage or segmented start-up meter, it will still have an impact at startup and affect the lack of internal electronic zero-knowledge technology. 'Being careful in trying the spirit, he finally created a brief description of this case.

Chuan 2489 5 ^ Description of the invention (2) Comprehensive description of the invention The main purpose of this case is to provide a starting device that senses the surge current generated when the circuit starts. Another purpose of this case is to provide a simple and cost-effective starting device for internal electronic parts, which is used to eliminate the surge current generated when electricity is generated. The starting device includes a signal generator electrically connected to the circuit, which generates a one-to-one comparison circuit in response to a signal output from the inductive circuit, and is electrically connected to the signal generator, which is converted into a second signal by a signal and compared The second signal generates a control signal; and a control element, an electrical connection circuit and the inductance circuit, which are used to receive the control signal and generate a signal to gradually increase the current input to the inductance circuit. When the sense circuit is activated, The resulting surge current. The inductive circuit is a general motor or a direct current. According to the idea of the present case, the signal generator is a frequency generator. And the first signal is a jade or 疋 side wave signal, and the frequency of the square wave signal is equal to ^ > u In addition, the comparison circuit further includes a signal conversion $ signal generator, which is used to convert the first signal The signal conversion 1 ^ and comparison is that it is electrically connected to the signal converter, and the second signal and the reference signal output a control; the converter is preferably a triangle wave generating circuit, which is used to: It does not affect the inductive circuit to activate the first signal of the inductor; therefore, the first and a reference signal are connected to the comparison and the motor is lowered due to control. The signal is a periodical signal and the speed is positive. The pen is connected to the second signal; it is used to compare the signal signal with the signal signal. 502489

F-angle or sawtooth signal. Then, the comparator compares the triangular wave or sawtooth wave signal with the reference signal provided by the charging circuit and then outputs the control signal, which is a pulse width " modulation (PWM) signal. In addition, the starting device of the present case further includes a driving circuit electrically connected between the inductive circuit and the signal generator for driving the inductive circuit. ,

The idea of the case is that the control element is preferably an electronic switch, more preferably a private Japanese version, which is used to make the electricity flowing through the inductor circuit in response to the control signal < IL gradually 2 plus' to Reduce the surge current generated when the inductor circuit starts. Another objective of Shimotogi is to provide a starting method for reducing the inrush current of an inductive circuit when it starts. The steps of the method include generating a first signal in response to the signal from the ninja circuit, by a signal converter: the _ signal is converted into a second signal; & compared with the second signal and 4 ^ Test flood to generate a control signal; and to increase the current input to the inductor circuit one by one in response to the control signal, thereby reducing the surge current generated when the inductor circuit starts. The following figures and detailed explanations have been used to obtain a deeper understanding of this wood. 0 Preferred embodiments are described. The neck wood provides a starting suit for an inductive circuit (such as a DC motor). It can reduce the motor. Surge current generated during startup. Please refer to the first figure, and-a preferred embodiment of the starting device of the present invention. The starting device tf Λ 5 tiger generator 1 2 'is electrically connected to the motor 11', which produces peaks in response to the speed of the motor. __ ^ t _ Generate a wave signal; a comparison circuit, electrically connected to the signal

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The signal generator 2 is preferably a frequency generator (frequency generator ^), which generates a periodic square wave signal according to the rotation speed of the motor, so the frequency of the square wave signal is proportional to the rotation speed of the motor.

The comparison circuit further includes a signal converter 13 and a comparator 14. The signal, the interception 1 3 is preferably a triangle wave generating circuit, which is electrically connected to the signal generating JI1 2], which is used to convert the square wave signal. Into a triangular wave or sawtooth wave signal, so as to generate the control signal compared with the reference signal 1 ^ (or referred to as the target value reference voltage), where the reference signal is electrically connected to the voltage source Vcc and the comparator 14 Connected charging circuit or resistance capacitor circuit 15 is provided. The comparator 14 is electrically connected to the signal converter 3, and it is used to compare the two-corner wave or the tooth wave signal with the reference signal and output a control signal. The control signal is a pulse width modulation (pulse width modulation,

PWM) signal. The control element 16 is preferably an electronic switch, more preferably a transistor. After receiving the pulse width modulation signal, the control element 16 gradually increases the current flowing through the inductance circuit in response to the signal, thereby reducing the motor. The surge current generated during start-up controls the speed of the motor. To fully understand the transitions and changes in the signal across the device, and

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j number 9010f) f) 7R 5. Description of the invention (5) imi I " '", a "丨 丨 __ 丨 nUI__IINI other ^ 丨 ^ For the relationship between it and the motor speed, please refer to the second figure. · The FG signal generated by the signal generator 12 is a one-wave signal (such as generator one or), and its frequency is proportional to the motor speed. After this signal is converted into a triangle wave or sawtooth wave, as shown in (b), It can be turned in 5 and compared with the reference voltage Vref provided by the charging circuit. 裉 摅 af τ a The comparison result is like a burst comparison. The comparator outputs a PWM signal to the transistor. As shown by ⑷, when the pulse wave enters At that time, the motor starts to rotate gradually. When the input pulse wave disappears (pulse »potential becomes low), the transistor turns off, but the horse's inertia continues to rotate for a period of time, so by the switch of the transistor, & Control the current supplied to the motor, so that the motor speed gradually increases until Tiida runs at two speeds (as shown in (d) of the second figure) ^ Therefore, the "simple king circuit ft" can reduce the motor startup time The resulting surge current. In addition, as shown in the third figure, the starting device of this case also includes a driving circuit. Circuit 17 is electrically connected between the motor and the signal generator for driving the motor. To sum up, the starting device or method of this case uses a simple and low-cost circuit design to gradually increase the speed of the motor when the motor is started. The electronic circuit connected to it is damaged due to the sudden generation. Also, this case may be modified by anyone who is familiar with the art, and it can be modified as long as it is protected by the attached patent scope.

$ 8 pages 1 remuneration 2002. 03. 25. 〇〇8 502489 Case number 90100078 γ f..1 _- ^ Travel π :! Year after year ^ ^ 'Jia1 correction' Schematic description, mm · — *** ~ .. ~ Simple diagram description The first diagram is an embodiment of the starting device of the present invention. The second figure shows the signal conversion and change in the starting device in this case, and the relationship between the signal and the change in motor speed. The third figure is another embodiment of the starting device of the present invention. The main components of the above diagram are as follows: 16 transistor 13 signal converter 15 charging circuit 11: motor 12: signal generator 14: comparator 1 7: drive circuit

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Claims (1)

502 卿 -SS__901〇〇〇78 VI. Application scope of patent: 14 * nm-si year-to-month s 1 wave of electricity: Kai Q =; it is used to reduce the surge circuit and circuit generated when the inductive circuit starts. The two signals should be inductive and a two-parallel circuit, electrically connected to the signal to generate a first signal into a second signal, and comparing the second signal to a violation signal to generate a control signal; and a control element, It is electrically connected to the comparison circuit and the inductance circuit, and is used to receive the control signal and gradually increase the current input to the inductance circuit in response to the control signal, thereby reducing the surge current generated when the inductance circuit starts. 2. The starting device according to item 1 of the scope of patent application, wherein the inductive circuit is a motor. 3. The starting device according to item 1 of the patent scope, wherein the inductive circuit is a DC motor. 4. The starting device according to item 2 or 3 of the scope of patent application, wherein the signal generator is a frequency generator. 5. The starting device according to item 4 of the scope of patent application, wherein the first signal is a periodic signal. Among them, the first news, where the square wave news, where the comparison power 6. • The starting device number described in item 5 of the scope of patent application is a square wave signal. 7. The number of the starting device as described in item 6 of the scope of patent application. The frequency is proportional to the speed of the motor. 8 · The starting device as described in item 6 of the scope of patent application. Page 10 2002. 03.25.010 6. The scope of patent application also includes a signal converter, which is electrically connected to the side brother and converts a signal to the- Said generator, which is used to connect the m-comparator 'to the signal, convert the cry two signal and the reference audience to output the signal ^' It is used to compare the 9. patent application range No. 8 Shuzhiqi ~ 丨: No. The converter is a triangle wave generating circuit, which is used for placing clothes, wherein the signal is converted into a wave or a sawtooth wave. The inch-side square wave signal is converted into a triangle 10. The electrical circuit as described in item 丨 of the scope of patent application is electrically connected to provide the inductive circuit :: set. It also includes a charger, which is used to provide the reference signal. The power supply of the voltage and the ratio π. The starting circuit as described in item i 0 of the scope of patent application is a resistance capacitor circuit. The starting device described in item 10 of the scope of patent application, where the charging number is a target value reference voltage. / Test If the scope of patent application is the first! The starting device according to the item, wherein the control signal is a pulse width modulation (pwM) signal. " 1 4 · The starting device according to item 1 of the scope of patent application, further comprising a driving circuit electrically connected to the inductance circuit and the signal generator for driving the inductance circuit. 3 'Use 15. The starting device as described in item 1 of the scope of patent application, wherein the control element is an electronic switch for gradually increasing the current flowing through the circuit 誃 1 in response to the control signal. ^ Inductor Page 11 502489 6. The starting device as described in the scope of patent application, in which the electronic 16. As the scope of patent application! 5 The switch is a transistor. 1 7 · A start-up device 'which is used to reduce the surge current generated when the inductive circuit is started' includes: the condition is beneficial; it is electrically connected to the inductive circuit and generates a response to the signal output by the inductive circuit. The first signal is converted into a signal, which is electrically connected to the signal generator and is used to convert the first signal into a second signal; a One or two comparators are electrically connected to the signal converter, which are used to compare the second signal and output a control signal after a reference signal; and a manufactured component is electrically connected to the comparator and the inductor circuit It is used to receive the " Hai control signal, and gradually increase the current input to the delta Hai inductor circuit according to the control signal, thereby reducing the surge current generated when the inductor circuit starts. 18 · The starting device as described in item 17 of the patent application, wherein the inductive circuit is a motor. 19 The starting device according to item 17 of the scope of patent application, wherein the inductor circuit is a DC motor. 2 /. The starting device according to item 18 or 19 of the scope of patent application, wherein the number generator is a frequency generator. H. The starting device as described in item 18 or 19 of the scope of patent application, wherein the first signal is a periodic signal. 2 2 · The starting device as described in item 21 of the scope of patent application, wherein the periodic signal is a square wave signal. 502489 6. Scope of patent application 2 3 • The starting device as described in item 22 of the scope of patent application, wherein the frequency of the square wave signal is inflammatory ratio with the speed of the motor. 2 4. The starting device according to item 22 of the scope of patent application, wherein the signal converter is a triangle wave generating circuit for converting the square wave signal into a triangle wave or sawtooth wave signal. 2 5. The starting device as described in item 7 of the patent application scope, further comprising a charging circuit, which is electrically connected to a power source providing the voltage required by the inductive circuit and the comparator for providing the reference signal. A μ 2 6 · The starting device as described in item 25 of the scope of patent application, wherein the charging circuit is a resistor-capacitor circuit. ▲ • The starting device as described in item 25 of the patent application scope, wherein the reference mesh value is the reference voltage.讯 · ## The starting device described in item 17 of the scope of patent application, wherein the control 4 is pulse width modulation (PWM) 29. If driven by > The starting device according to item 7, further comprising a circuit, which is electrically connected between the inductive circuit and the signal generator, and the inductive circuit is moved by "⑼". The component is described in item 17 of the patent scope. The device, wherein the control circuit and the electronic switch are used to gradually increase the air current flowing through the inductor 3m in response to the control signal. The switch Z is the starting device described in the 30th patent application range, wherein the electronic 32 is a Transistor A start-up method used to reduce the sudden surge that occurs when an inductor circuit starts 502489 VI. Patent application wave current, the steps of the method include: (a) generating a first signal in response to the signal output by the inductive circuit; (b) converting the first signal into a first signal by a signal converter Two signals; (c) comparing the second signal with a reference signal to generate a control signal; and (d) gradually increasing the current input to the inductive circuit due to the control signal, thereby reducing the amount of current generated when the inductive circuit starts up Surge current. 3 3. The starting method according to item 32 of the scope of patent application, wherein the inductor circuit is a motor. 3 4. The starting method according to item 32 of the scope of patent application, wherein the inductor circuit is a DC motor. 35. The activation method as described in item 33 or 34 of the scope of patent application, wherein the first signal is a periodic square wave signal. 3 6. The starting method as described in item 35 of the scope of patent application, wherein the frequency of the periodic square wave signal is proportional to the speed of the motor. 37. The starting method according to item 35 of the scope of patent application, wherein the signal converter is a triangle wave generating circuit for converting the periodic square wave signal into a triangle wave or sawtooth wave signal. 3 8. The starting method according to item 35 of the scope of patent application, wherein the control signal is a pulse width modulation (PWM) signal to control the speed of the motor. Page 14 502489 VI. Patent application scope 39. The starting method described in item 35 of the patent application scope further includes a step to repeat the steps (a) to (d), and gradually increase the motor speed until the motor starts Turn at full speed.