Inverter control system and its use method and equipment
A frequency converter control and bus control technology, applied in the field of communication, can solve the problems of high cost of components, replacement and inability to transmit, etc.
Active Publication Date: 2017-02-15
BEIJING CERISTAR ELECTRIC +1
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[0006] The embodiment of the present invention provides a frequency converter control system and its use method and equipment, which are used to solve the problems of strong and weak current isolation between the control unit and the power unit, high cost of components and difficult replacement, and inability to transmit a large amount of information in the prior art
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[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0050] The embodiment of the present invention provides a communication network, and also provides the frequency converter control unit side and the power unit side under the network, and the usage method of the communication network.
[0051] In the process of explanation, the implementation of the inverter control unit side and the power unit side will be explained separately, but this does not mean that the two must be implemented together. In fact, when the inverter control unit side and the power unit side are implemented separately , which also solve the problem...
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The invention discloses a frequency changer control system, an application method thereof and a device with the frequency changer control system used. A frequency changer control unit is connected with power units through optical fibers in an Ethernet mode to form a communication network, the frequency control unit determines and corrects the crystal oscillator clock jitter between each power unit and the control unit according to the arriving time of data packs sent by each power unit and a bus control data pack is sent out according to the corrected crystal oscillator clock; the power units transmit feedback signals to the frequency changer control unit through the Ethernet in a receiving / responding mode. By the adoption of the frequency changer control system, the application method of the frequency changer control system and the device with the frequency changer control system used, the problem of strong current and weak current isolation of the control unit and the power units is solved, the problems that devices are high in cost and difficult to replace are solved and the problem that a large amount of information cannot be transmitted due to the fact that the feedback signals are limited by transmission speed.
Description
technical field [0001] The present invention relates to the field of communication technology, in particular to a frequency converter control system and its use method and equipment. Background technique [0002] In the current inverter control system, the PWM (Pulse Width Modulation, pulse width modulation) trigger pulse generated by the inverter control unit controls the high-speed turn-on and cut-off of the IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) power device through the drive circuit. , the trigger signal is isolated by analog signal optocoupler or optical fiber pulse transmission, and the feedback signal inside the power device is also fed back to the control system through analog or optical fiber. [0003] In the process of implementing the present invention, the inventor found that the current controller architecture has the following problems: [0004] 1. Use analog signal transmission, strong current and weak current isolation ci...
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IPC IPC(8): H04L12/28H02M1/092
Inventor 于洋岳淳毛伟闫向峰王俊成刘东曹桂水
Owner BEIJING CERISTAR ELECTRIC