Is the frequency conversion speed regulation method of the mining locomotive better?

Date:2021-08-02

Taking the 12-ton wireline mining locomotive as an example, the CJZ12/6P locomotive adopts low-speed high-torque inverter technology to achieve constant torque starting of the motor, constant power operation, smooth start without obvious impact, simple operation and complete protection. Pulling more than 15 tons of 3 brackets, the starting torque is low, because the locomotive often needs to start after the speed regulation, although the speed regulation performance is good, but the overload capacity is poor, maintenance and maintenance costs are large, promoted and applied in the underground The following work was done on the hardware design of coal and general materials. The whole system part includes the lower position machine, the adapter plate, the pneumatic circuit control, the flow control and the control power supply. The lower computer is the core of the system, and is responsible for the main tasks of uploading and computing various data and control. The adapter board is responsible for the bridge between the lower computer and the control appliance. It consists of multiple modules, which mainly have the following functions: driving of high-power electrical appliances, conversion of signal voltage and current, level conversion of pulse signals, shaping, and display driving. The adapter board provides power-off signal processing, power-off signal display output, RS232 interface, flow control interface, relay and working status indicator light drive circuit. In addition to electrical isolation on the electrical circuit, each signal circuit performs multi-stage processing on the anti-jamming, and performs harmonic processing on the signal source. The gas path control is mainly composed of an air circuit of an intake electric control valve-distributor-pressure regulating filter-flow controller-distributor-exhaust solenoid valve. The power supply circuit adopts different power supply modes, a simple and practical three-terminal regulator to produce a regulated power supply, a high-power switching power supply and a multi-stage adjustable regulated power supply.