Permanent-magnet synchronous motor control system of electric ship

Abstract

The invention provides a permanent-magnet synchronous motor control system of an electric ship. The system has the dominant advantages of high efficiency, high specific power and the like. Meanwhile, the system has the advantages of environmental protection and energy conservation and is a most desirable option for the propulsion electromotor of an electric propulsion ship. The system comprises a digital signal processor (DSP), a PWM driving circuit, a bus voltage detection circuit, a relay control circuit, a temperature detection circuit, a current detection circuit, a storage battery, an incremental photoelectric encoder, a simulation interface, a serial communication interface, a state indication module, an external clock, an inverter circuit and a brushless motor. The JTAG of the DSP is connected with the simulation interface. The SCI of the DSP is connected with the serial communication interface. The I/O of the DSP is connected with the state indication module. The PLL of the DSP is connected with the external clock. The temperature detecting circuit, the current detection circuit and the incremental photoelectric encoder are simultaneously connected with an A/D port inside the DSP. The relay control circuit is connected with the I/O of the DSP.

Description

technical field [0001] The invention belongs to the technical field of inter-island transportation, and in particular relates to a permanent magnet synchronous motor control system for an electric ship. Background technique [0002] Most of the existing small inter-island transportation ships use diesel engines as power. During the operation of diesel engines, not only will they generate huge noise, but they will also emit a large amount of exhaust gas, which will damage the marine environment. In addition, the disadvantages of diesel engine ships include low maneuverability, poor space layout, complex turbine system, and low efficiency. However, pure electric ships powered by batteries can overcome the shortcomings of diesel ships, and their environmental and economic benefits are immeasurable. Contents of the invention [0003] The present invention is aimed at the above problems, makes up for the deficiencies of the prior art, and provides a permanent magnet synchronou...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing small inter-island transportation ships use diesel engines as power. During the operation of diesel engines, not only will they generate huge noise, but also emit a large amount of exhaust gas, which will damage the marine environment.

In addition, the disadvantages of diesel engine ships include low maneuverability, poor space layout, complex turbine system, low efficiency, etc.

However, pure electric ships powered by batteries can overcome the shortcomings of diesel ships, and their environmental and economic benefits are immeasurable

Images