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Half-H bridge power inverter system

A technology of power inverter and power system, which is applied in the direction of control system, AC power input conversion to DC power output, output power conversion device, etc. It can solve the problems of poor electromagnetic compatibility, low fault tolerance and low reliability. To achieve the effect of high reliability, improved fault tolerance, and improved use and maintenance performance

Active Publication Date: 2014-12-10
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low fault tolerance, low power, large volume, low reliability and poor electromagnetic compatibility

Method used

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  • Half-H bridge power inverter system
  • Half-H bridge power inverter system

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0032] Such as figure 1 and figure 2 As shown, a half H-bridge power inverter system provided by the present invention includes a first bridge arm circuit 1 and a second bridge arm circuit 2 , and the first bridge arm circuit 1 and the second bridge arm circuit 2 are connected in parallel.

[0033] Such as figure 1 and figure 2 As shown, the first bridge arm circuit 1 includes a first open circuit protection circuit 101 , a first power circuit 102 , a second power circuit 103 , a third power circuit 104 , and a first absorption circuit 105 . The first power circuit 102, the second power circuit 103, and the third power circuit 104 of the first bridge arm circuit 1 are power circuits with the same three-way structure, independent of each other and redundant parallel connection; The regulating circuit and the gate control clamping circuit ...

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Abstract

The invention belongs to a brushless DC (Direct Current) motor driver power inverter system, and particularly discloses a half-H bridge power inverter system, which comprises multiple bridge arm circuits connected in parallel. Each bridge arm circuit is composed of multiple power circuits connected in parallel; each power circuit is composed of a field effect tube, a switching speed control circuit and a grid control clamping circuit; a control signal output end of a motor driver is communicated with an input end of each switching speed control circuit; the output end of each switching speed control circuit is respectively communicated with an input end of one corresponding grid control clamping circuit and a grid of one corresponding field effect tube; the drain electrodes D of the field effect tubes in the same bridge arm circuit are communicated; the source electrodes S of the field effect tubes in the same bridge arm circuit are communicated; the drain electrodes D and the source electrodes S of the field effect tubes in two adjacent bridge arm circuits are communicated. The half-H bridge power inverter system is high in power, small in volume, high in reliability and good in electromagnetic compatibility, and can realize precise control and continuous as well as reliable operation of the brushless DC motor.

Description

technical field [0001] The invention belongs to a brushless DC motor driver power inverter system, in particular to a half-H bridge power inverter system. Background technique [0002] Servo mechanism is the collective name for the subsystems of the launch vehicle flight control actuator in my country. At present, electro-hydraulic servo technology is widely used in the launch vehicle servo mechanism, that is, the motor is used as the hydraulic power to drive the hydraulic pump to realize the hydraulic system of the servo mechanism to build pressure and push the servo mechanism. Complete the actions required by the rocket order. Due to the limitations of traditional brushed motors that have brush wear and are not suitable for high-vacuum environments, the latest development trend is to replace brushed motors with brushless DC motors to achieve energy drive functions. Motor drivers are essential for the operation of brushless DC motors The electronic device, as the energy and...

Claims

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Application Information

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IPC IPC(8): H02M7/5387H02P27/06
Inventor 曹英健仲悦
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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