CN106208817B

CN106208817B - starting system of ultra-high-power direct-current amplitude piezoelectric motor

Info

Publication number: CN106208817B
Application number: CN201610656274.5A
Authority: CN
Inventors: 岑磊; 岑玲
Original assignee: HEFEI TONGYONG POWER EQUIPMENT CO Ltd
Current assignee: HEFEI TONGYONG POWER EQUIPMENT CO Ltd
Priority date: 2016-08-11
Filing date: 2016-08-11
Publication date: 2019-12-17
Anticipated expiration: 2036-08-11
Also published as: CN106208817A

Abstract

The invention discloses a starting system of an ultra-high power direct current amplitude piezoelectric motor, which comprises an armature, a logarithmic voltage generator, a constant current generator, a self-adaptive time schedule controller, a diode, a capacitor, a resistor, an inductor and a relay, wherein the logarithmic voltage generator is connected with the self-adaptive time schedule controller; the invention adopts the logarithmic voltage generator, the constant current generator and the self-adaptive time schedule controller, so that the starting process of the motor has the characteristics of small starting current, large torque and short starting time, and not only can be frequently started, but also can reduce the starting energy consumption of the motor.

Description

Starting system of ultra-high-power direct-current amplitude piezoelectric motor

Technical Field

The invention relates to a motor starting device, in particular to a starting system of an ultra-high-power direct-current amplitude piezoelectric motor.

Background

the direct current motor is an electric machine for realizing the conversion of direct current electric energy and mechanical kinetic energy, and generally comprises an armature winding and an excitation winding, wherein the excitation winding generates a magnetic field, and the armature winding generates torque, so that the direct current motor has excellent speed regulation performance and control characteristic. The high-power direct current motor is directly started in full voltage, the starting current reaches 10-20 times of rated current, electrical and mechanical damage can be caused to the motor and dragged equipment, the service life is shortened, huge impact can be caused to a power supply system, and the marine direct current power supply system taking the storage battery as a core cannot bear the direct current power supply system, so that the safety of the power supply system can be endangered, and the operation of other electric equipment in the system can be influenced.

the ultra-high power DC amplitude piezoelectric motor is widely applied to the occasions of storage battery power supply and the dragging of large-scale equipment with excellent speed regulation performance and large speed regulation range. There are two types of currently used start-up methods: the first type is multi-section starting of an armature winding series starting resistor, the method has the problems of poor voltage adaptability and high energy consumption, the starting current can well exceed 2 times of the rated current of the motor when the power supply voltage is at the upper limit, and the starting torque is lower than the rated torque of the motor when the power supply voltage is at the lower limit, so that the method cannot adapt to frequent starting due to high starting energy consumption; the second type is PWM current control, which has high frequency ripple of armature current, which causes interference and torque ripple, and the starting current is 1.5 times the rated current in order to generate sufficient starting torque in the whole supply voltage range.

disclosure of Invention

The starting system of the ultra-high-power direct-current amplitude piezoelectric motor solves the problems of large starting current, large torque, long time and much electric energy consumption when the ultra-high-power amplitude piezoelectric motor is started.

The purpose of the invention can be realized by the following technical scheme:

A starting system of an ultra-high power direct current amplitude piezoelectric motor comprises an armature, a logarithmic voltage generator, a constant current generator, a self-adaptive timing controller, a diode D1, a capacitor C1, a resistor R1, an inductor L1 and a relay J1;

the positive pole of power respectively with diode D1 negative pole, electric capacity C1 one end and armature one end are connected, wherein diode D1 positive pole with constant current generator's one end is connected, electric capacity C1's the other end respectively with inductance L1 with resistance R1's one end is connected, inductance L1's the other end with diode D1 positive pole is connected, the other end of armature respectively with resistance R1's the other end, relay J1's one end, self-adaptive timing controller, constant current generator connect, relay J1's the other end with self-adaptive timing controller connects, relay J1's third end with self-adaptive timing controller is connected with the negative pole of power respectively.

further, the logarithmic voltage generator is used for providing an excitation voltage which is logarithmically attenuated along with time for the motor; the constant current generator has the function of providing current for the armature; the self-adaptive time schedule controller is used for switching the starting state to the running state.

Further, the generated constant current passes through the anode of the diode D1 on one path, and the other path sequentially passes through the inductor L1 and the resistor R1 to supply current to the armature.

Further, as the rotating speed of the motor is continuously increased, the voltage in the excitation winding is continuously reduced, the potential of the point a is continuously reduced, the power of the motor is also continuously reduced, and the torque of the motor is increased.

Further, when the rotating speed of the motor reaches a set value, the relay J1 acts and is changed from an open state to a closed state, and at the moment, the self-adaptive timing controller works to control the motor to start and stop.

The invention has the beneficial effects that: the invention adopts the logarithmic voltage generator, the constant current generator and the self-adaptive time schedule controller, and shunts the constant current through the diode, so that the motor has the characteristics of small starting current, large torque and short starting time in the starting process, and not only can be frequently started, but also can reduce the starting energy consumption of the motor.

drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a starting system of an ultra-high power direct-current amplitude piezoelectric motor according to the present invention.

Detailed Description

A starting system of an ultra-high power direct current amplitude piezoelectric motor is shown in figure 1 and comprises an armature 1, a logarithmic voltage generator 2, a constant current generator 3, a self-adaptive timing controller 4, a diode D1, a capacitor C1, a resistor R1, an inductor L1 and a relay J1;

The positive pole of the power supply is respectively connected with the cathode of a diode D1, one end of a capacitor C1 and one end of an armature 1, wherein the anode of a diode D1 is connected with one end of the device 2, the other end of the capacitor C1 is respectively connected with one ends of an inductor L1 and a resistor R1, the other end of the inductor L1 is connected with the anode of a diode D1, the other end of the armature 1 is respectively connected with the other end of a resistor R1, one end of a relay J1, a self-adaptive timing controller 4 and a constant current generator 3, the other end of the relay J1 is connected with a self-adaptive timing controller 4, and the third end of the relay J1 and the self-adaptive timing controller 4 are respectively.

The logarithmic voltage generator 2 is used for providing excitation voltage which is logarithmically attenuated along with time for the motor; a constant current generator 3 having a function of supplying a current to the armature 1; an adaptive timing controller 4 for switching the start-up state to the run state.

The constant current generator 3 includes three terminals, one of which is connected to the other end of the inductor L1 and the anode of the diode D1; the other terminal is connected with the negative pole of the power supply, the third end of the relay J1 and one end of the adaptive timing controller 4; the other terminal is connected with the other end of the armature 1, the other end of the resistor R1, one end of the relay J1 and the other end of the self-adaptive timing controller 4;

The armature 1 includes an armature core and an armature winding, wherein the armature winding is a circuit portion of the dc motor and also a portion that induces an electric potential and generates an electromagnetic torque to perform electromechanical energy conversion, and the armature core is both a portion of a main magnetic circuit and a supporting member of the armature winding.

The logarithmic voltage generator 2 is started, the voltage in the corresponding excitation winding is logarithmically attenuated along with time, then the constant current generator 3 works, one path of constant current generated by the constant current generator 3 passes through the anode of the diode D1, the other path of constant current provides current for the armature 1 through the inductor L1 and the resistor R1, and the diode D1 shunts the constant current generated by the constant current generator 3, so that the current in the armature 1 is smaller than the constant current provided by the constant current generator 3.

When the rotating speed of the motor reaches a set value, the relay J1 acts to change the state from the open state to the closed state, and at the moment, the adaptive timing controller 4 works to control the motor to start and stop; the point a is located in the middle of the conductive wire connecting between the constant current generator 3 and the other end of the armature 1.

The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.

Claims

1. The utility model provides a super large power direct current amplitude of flow piezoelectric motor start-up system which characterized in that: the self-adaptive time-sequence controller comprises an armature (1), a logarithmic voltage generator (2), a constant current generator (3), a self-adaptive time-sequence controller (4), a diode D1, a capacitor C1, a resistor R1, an inductor L1 and a relay J1;

The positive electrode of a power supply is respectively connected with the cathode of the diode D1, one end of a capacitor C1 and one end of an armature (1), wherein the anode of the diode D1 is connected with one end of the constant current generator (3), the other end of the capacitor C1 is respectively connected with one end of the inductor L1 and one end of the resistor R1, the other end of the inductor L1 is connected with the anode of the diode D1, the other end of the armature (1) is respectively connected with the other end of the resistor R1, one end of a relay J1, an adaptive timing controller (4) and the constant current generator (3), the other end of the relay J1 is connected with the adaptive timing controller (4), and the third end of the relay J1 and the adaptive timing controller (4) are respectively connected with the negative electrode of the power supply;

One path of constant current generated by the constant current generator (3) passes through the anode of the diode D1, and the other path of constant current sequentially passes through the inductor L1 and the resistor R1 to provide current for the armature (1);

Along with the continuous increase of the rotating speed of the motor, the voltage in the to-be-excited winding is continuously reduced, the potential of the point A is continuously reduced, the power of the motor is also continuously reduced, and the torque of the motor is increased; the point A is positioned in the middle of a conductive wire connected between the constant current generator (3) and the other end of the armature (1);

When the rotating speed of the motor reaches a set value, the relay J1 acts and is changed from an open state to a closed state, and at the moment, the self-adaptive timing controller (4) works to control the motor to start and stop;

the logarithmic voltage generator (2) is used for providing excitation voltage which is logarithmically attenuated along with time for the motor; the constant current generator (3) has the function of providing current for the armature (1); -said adaptive timing controller (4) is a means for switching a start-up state to a run state;

the constant current generator (3) comprises three terminals, wherein one terminal is connected with the other end of the inductor L1 and the anode of the diode D1; the other terminal is connected with the negative pole of the power supply, the third end of the relay J1 and one end of the adaptive timing controller (4); the other terminal is connected with the other end of the armature (1), the other end of the resistor R1, one end of the relay J1 and the other end of the self-adaptive time schedule controller (4).