Multi-channel integrated self-suppression bus voltage pumping circuit

Abstract

The invention discloses a multi-channel integrated suppression bus voltage pumping circuit. By using a high-energy film capacitor to absorb the pumping energy, and setting corresponding bleeder loop opening voltage according to the collected bus voltage, temperature and other signals by cooperating with the bleeder circuit, the bleeder circuit can be ensured to absorb pumping energy to the maximumextent under reliable operation. In addition, the IGBT upper and lower tubes are forcibly turned on or off by software control based on the pumping condition to form an open circuit to reduce the busvoltage pumping. The input command is optimized to further consistent the bus voltage pumping. Suppressing the bus voltage pumping can effectively protect the control driver, avoid component damage caused by overloading, and improve product reliability and service life.

Description

technical field [0001] The invention belongs to the field of electromechanical servo drive, and in particular relates to a multi-path comprehensive self-suppressing bus voltage pumping circuit. Background technique [0002] The servo control driver is used to control and drive the movement of the motor. The motor is in the power generation mode during the stop or deceleration process, and the generated voltage will be fed back to the bus to make the bus voltage pump up. If the voltage pump is too high, it will cause the components used in the drive circuit to damage, resulting in abnormal operation of the product. In the prior art, capacitors are connected in parallel at both ends of the power circuit to absorb the pumping energy, or high-power resistors are connected in parallel at both ends of the power circuit, and the pumping energy is consumed by turning on the discharge resistor through a switch. However, the size of the bleed resistor corresponding to the power is re...

AI Technical Summary

Problems solved by technology

[0002] The servo control driver is used to control and drive the movement of the motor. The motor is in the power generation mode during the stop or deceleration process, and the generated voltage will be fed back to the bus to make the bus voltage pump up. If the voltage pump is too high, it will cause the components used in the drive circuit to damage, causing the product to work abnormally

In the prior art, capacitors are connected in parallel at both ends of the power circuit to absorb the pumping energy, or high-power resistors are connected in parallel at both ends of the power circuit, and the pumping energy is consumed by turning on the discharge resistor through a switch.

However, the size of the bleeder resistor corresponding to the power is relatively large, and it is difficult to realize the energy completely by using the resistor. Aiming at the requirement of miniaturization structure, the present invention proposes a multi-channel comprehensive self-suppression bus voltage pumping technology

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