Control method of novel high-voltage synchronous variable-frequency soft starting device
A technology of synchronous frequency conversion and control method, which is applied in the starting device, the starter of a single synchronous machine, the motor generator/starter, etc., to achieve the effect of increasing the running speed and reducing the failure rate
Active Publication Date: 2021-01-26
BIG PAWER ELECTRICAL TECH XIANGYANG
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[0005] In view of this, the present invention proposes a new type of high-voltage synchronous variable-frequency soft starter control method and device, aiming to solve the technical problem that the aging device cannot be controlled by the aging voltage synchronous variable-frequency soft-starter in the prior art.
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[0033]The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0034] Such as figure 1 As shown, the terminal device may include: a processor 1001 , such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002 , a user interface 1003 , a network interface 1004 , and a memory 1005 . Wherein, the communication bus 1002 is used to realize connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyb...
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The invention provides a control method and device of a novel high-voltage synchronous variable-frequency soft starting device. The method comprises the following steps: enabling a master chip MCU toreceive a starting signal and perform self-inspection on the master chip MCU, and when the master chip MCU does not have a fault, enabling the master chip MCU to send a soft starting signal to a slavechip MCU; receiving a soft start signal from the chip MCU, and acquiring [delta]-path voltage signals and [delta]-path current signals of the transformer according to the start signal; calculating the rotating speed of the rotor according to the voltage signal and the current signal, comparing the rotating speed of the rotor with a rotating speed threshold value, sending synchronous excitation toa synchronous device when the rotating speed of the rotor meets the rotating speed threshold value, and waiting for synchronous adjustment signal feedback; and after the feedback of the synchronous adjustment signal is received, extracting a direct-current side current signal from the chip MCU, and controlling the synchronous motor to enter power frequency operation according to the direct-current side current signal. According to the invention, the synchronous motor is controlled by the master MCU and the slave MCU, and when the master MCU breaks down, the slave MCU plays a role, so that thenormal operation of equipment can be guaranteed, and the situation that the aging device is shut down and trips is avoided.
Description
technical field [0001] The invention relates to the technical field of computer software, in particular to a control method and device for a novel high-voltage synchronous variable-frequency soft starter. Background technique [0002] The high-voltage synchronous frequency conversion soft starter is suitable for large and medium-sized high-voltage synchronous motors or high-voltage synchronous generators, and is used for motor frequency conversion starting. The soft start device has excellent starting speed regulation performance, which is comparable to the speed regulation performance of a DC motor. [0003] After aging, the existing high-voltage synchronous variable frequency soft starter is prone to shutdown and tripping, and the mechanical operation efficiency is very low. However, if the aging equipment is modified without using relative methods for control, the problem of equipment aging still remains Can not be resolved, so a new type of high-voltage synchronous freq...
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Login to View More IPC IPC(8): H02P1/52H02P6/20
CPCH02P1/52H02P6/20Y02P80/10
Inventor 梁业庭史红燕于磊陈竹光史强刘小康
Owner BIG PAWER ELECTRICAL TECH XIANGYANG