2results about How to "Improve voltage utilization" patented technology

This utility model discloses a control device for a dual-winding stepper motor, relating to the field of stepper motor drive technology. It includes: a first winding control device and a second winding control device for controlling the two winding coils of a dual-winding stepper motor. Both the first and second winding control devices include a data acquisition and output unit and connected to it a main control unit, an operation display unit, a drive unit, and a power supply unit. They also include a maintenance unit connected to the main control unit and the drive unit. The output terminal of the drive unit is connected to the winding coils, and the main control unit, data acquisition and output unit, and drive unit are all connected to the power supply unit. The two drive units are interconnected. This utility model utilizes digital technology and modular design, making the system's control and monitoring more precise and flexible. Furthermore, each module can be independently designed, tested, and maintained.

The application discloses a three-phase E-type hybrid level double-output integrated converter and a carrier PWM modulation method thereof, and belongs to the technical field of power electronic conversion devices. The three-phase E-type hybrid level double-output integrated converter comprises one DC input power supply, two capacitors on the DC input side, 15 switch modules, and one set of three-phase inductive load on each output end of the bridge arm of each phase. The carrier PWM modulation method with added DC offset and zero sequence component is given for the proposed converter. Two sets of modulation waves with added DC offset and zero sequence component are compared with anti-phase stacked carriers respectively. According to the switch state and the comparison result, the logic operation for generating the driving signals of each switch module is derived. One set of DC input voltage is converted into three-level AC voltage on the upper end and two-level AC voltage on the lower end through the inverter circuit, and the frequency and amplitude of the three-phase AC voltage can be adjusted. The three-phase E-type hybrid level double-output integrated converter can be widely applied to the double-motor driving application scene of one master and one slave, and has the advantages of reasonable structure, scientific modulation method, outstanding performance and the like.