Motor starting circuit, and parameter determination method, system and device
A motor start-up and parameter determination technology, which is applied to the deceleration device of the AC motor, the starter of a single DC motor, the motor generator/starter, etc., can solve the problems of complex circuit, failure of resistance cut-off, easy failure, etc., to achieve The starting voltage and starting current increase smoothly, the starting voltage and starting current are smooth, and the effect of avoiding overvoltage or overcurrent
Active Publication Date: 2021-08-31
润电能源科学技术有限公司
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The first way to suppress the starting current and starting voltage of the motor is to set multi-stage resistors between the output terminal of the power supply and the power supply terminal of the motor. The series of resistances will gradually increase the starting current and starting voltage of the motor. The removal of each level of resistance is controlled by a set of corresponding control circuits. Among them, the control circuit includes low-voltage relays, contactors and intermediate relays. The middle of the control circuit There are many links, which are prone to failure, and the action of the low-voltage relay is unreliable, which may easily cause the failure of resistor removal, and the failure rate is high
[0004] The second way to suppress the starting current of the motor is to install a soft starter between the output terminal of the power supply and the power supply terminal of the motor. The control of the starting current and starting voltage of the motor avoids excessive starting current and starting voltage. However, the cost of the soft starter is high, the circuit is more complicated, and the life is short
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] The core of the present invention is to provide a motor starting circuit and a parameter determination method, system and device. Through the resistance, capacitance and inductance in this application, the starting voltage and starting current of the motor can be smoothly increased, thereby avoiding overvoltage or overvoltage of the motor. Overcurrent, avoiding motor damage, and the cost of resistors, capacitors and inductors is low.
[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a motor starting circuit, and a parameter determination method, system and device. The motor starting circuit comprises a resistor, a capacitor and an inductor, the inductor and the capacitor form a second-order circuit, when a motor is started, a power supply supplies power to the motor through the second-order circuit by utilizing the characteristic that the current and voltage of the second-order circuit cannot be suddenly changed, so the starting current and the starting voltage of the motor are slowly increased. In addition, the resistor provides damping for the second-order circuit, oscillation in the second-order circuit is reduced, and the starting voltage and the starting current are enabled to be increased relatively smoothly. Therefore, when the motor is started, the starting voltage and the starting current of the motor can be smoothly increased through the resistor, the capacitor and the inductor, so that overvoltage or overcurrent of the motor is avoided, the motor is prevented from being damaged, and the cost of the resistor, the capacitor and the inductor is relatively low. The invention further provides the parameter determination method, system and device which have the same beneficial effects as the motor starting circuit described above.
Description
technical field [0001] The invention relates to the field of motor start-up control, in particular to a motor start-up circuit and a parameter determination method, system and device. Background technique [0002] The output terminal of the power supply is connected to the power supply terminal of the motor. When the motor is started, overcurrent or overvoltage may be generated when the power supply directly supplies power to the motor. Excessive overcurrent or overvoltage may damage the motor. Two methods commonly used in the prior art to suppress the starting current and starting voltage of the motor are: [0003] The first way to suppress the starting current and starting voltage of the motor is to set multi-stage resistors between the output terminal of the power supply and the power supply terminal of the motor. The series of resistances will gradually increase the starting current and starting voltage of the motor. The removal of each level of resistance is controlled...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(China)
IPC IPC(8): H02P1/04H02P1/18G06F30/20
CPCH02P1/04H02P1/18G06F30/20
Inventor朱建华马建胜许立长张小伟
Owner润电能源科学技术有限公司