Servo driver system with wide-range input voltage

Through the combination of the interchange-direct conversion circuit, DC-DC step-up and buck voltage regulation circuit and energy consumption braking circuit, the stability problem of the servo driver system when the input voltage fluctuates is solved, and the stability and control accuracy of the servo driver system are improved.

CN223194626UActive Publication Date: 2025-08-05QUANZHOU SANG CHUAN ELECTRIC EQUIP
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Patent Information

Application Number
CN202422441023.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-10
Publication Date
2025-08-05
Estimated Expiration
2034-10-10

AI Technical Summary

Technical Problem

When the existing servo drive system fluctuates in the input AC voltage, the bus voltage is unstable, resulting in servo drive failure and servo motor control effect.

Method used

Using the combination of alternating-direct conversion circuit, DC-DC step-up and buck voltage regulation circuit, energy consumption braking circuit and direct-alternating conversion circuit, the wide range of input voltage is achieved through MOSFET tubes and energy storage components, and a negative feedback closed loop is formed using an error feedback circuit to maintain the voltage stability.

Benefits of technology

Under a wide range of input voltage conditions, ensure the stability and control accuracy of the servo drive system, prevent failures, and improve the safety and response speed of the system.

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Abstract

A servo driver system capable of inputting voltage in a wide range is characterized in that the servo driver system comprises an alternating current-direct current conversion circuit, the input end of a DC-DC voltage-boosting and voltage-regulating circuit is connected with the alternating current-direct current conversion circuit, the input end of an energy consumption braking circuit is connected with the output end of the DC-DC voltage-boosting and voltage-regulating circuit, the direct current-alternating current conversion circuit is connected to the output end of the energy consumption braking circuit, and the direct current-direct current conversion circuit is connected to the output end of the energy consumption braking circuit. And at least one servo driver is connected to the output DC-AC conversion circuit. When a servo driving system with wide-range input voltage is used, a user turns on a power supply, so that alternating current is input to the alternating current-direct current conversion circuit, and a stable voltage level is maintained through the DC-DC buck-boost circuit; when the servo motor slows down or stops, the energy consumption braking circuit consumes regenerated energy, the DC-DC voltage-boosting and voltage-regulating circuit regulates the grid voltage of the MOSFET tube through the error feedback circuit and the system to form a negative feedback closed loop, and the electric energy is stored in combination with an energy storage element on the DC-DC voltage-boosting and voltage-regulating circuit so as to keep the stability of the output voltage.
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