Modularized large-current parallel starting and generating integrated controller and control method

Abstract

The invention discloses a modular large-current parallel starting and generating integrated controller and a control method, and belongs to the field of starting and generating integrated controllers. The modular large-current parallel starting and generating integrated controller comprises a starting control module, a plurality of power generation modules and a function module, and can realize large-current power generation output and large-current motor driving output; all modules are controlled in a full-digital mode, so that control is flexible, expansion is convenient, and power density is high; the starting control module is used as a main module to communicate with other modules through a serial port bus, read data and send commands, and adopts separate layout of large-current and high-voltage signals and small signals to reduce mutual interference; the starting control module serves as a main module and can communicate with other devices through RS422, CAN, RS485 and the like. An engine starting controller and a generator power generation controller can be organically integrated together, part of power devices and control logic are shared, the weight and the size are reduced, and seamless connection of starting and power generation is achieved.

Description

technical field [0001] The present invention relates to the field of integrated start-up controllers, and more particularly, to a modularized high-current parallel start-up integrated controller and a control method. Background technique [0002] This integrated controller is mainly used in aircraft platforms, vehicle platforms and ship platforms, and is used with brushless permanent magnet synchronous motors to start engines and supply power to airborne equipment, vehicle equipment or shipborne equipment. [0003] In the traditional engine starting and power generation system, the engine starting is completed by an independent starter motor, and the power generation is also completed by an independent generator and power generation controller; this kind of starter motor is usually a brushed DC motor, which drives the engine power output through a deceleration mechanism When the shaft rotates, the starting time and the starting target speed are fixed, which cannot be set fle...

AI Technical Summary

Problems solved by technology

[0003] In the traditional engine starting and power generation system, engine starting is completed by an independent starter motor, and power generation is also completed by an independent generator and power generation controller; this starter motor is usually a brushed DC motor, which drives the engine power output through a reduction mechanism The shaft rotates, the starting time and the starting target speed are fixed, and cannot be flexibly set, and the engine cannot start to the ignition speed when the low temperature and the voltage of the starting battery are too low, and the starting time becomes longer; this kind of starter motor plus matching mechanical There are many parts and the structure is complicated, and the weight is heavy

The brushed DC motor does not need the controller to supply power and is powered by the starting battery, but the life of the brushed DC motor is lower than that of the DC brushless motor; in the traditional engine power generation system, the power generation is completed by a separate generator plus a power generation controller , the output power of the generator is usually only a few hundred watts, which is used to charge the battery and supply power to the equipment; but with the increase of the electrical equipment, the load of the electrical equipment is increasing, and the generator power of the traditional engine cannot meet the requirements ; and the usual generator is an excitation motor, the generator controller is only a rectifier unit, the output ripple is relatively large, and a lot of filter capacitors need to be added to the output of the generator controller; the traditional starter controller and generator controller are separated, corresponding to independent The starter motor and the generator motor have many supporting parts, the weight of the whole system is heavy, and the power density is low

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