Corporate News_Zhejiang Rihong Inverter Co., Ltd.

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05月 Provincial leaders come to guide Provincial leaders come to guide
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05月 Four control methods of inverter to motor U/f constant control U/f control is to change the voltage of the motor power supply while changing the frequency of the motor power supply, so that the magnetic flux of the motor is kept constant. In a wide speed regulation range, the efficiency and power factor of the motor do not decrease. . Because it is the ratio of the control voltage (Voltage) to the frequency (Frequency), it is called U/f control. The main problem of constant U/f control is that the low-speed performance is poor. When the speed is extremely low, the electromagnetic torque cannot overcome the large static friction force, and the torque compensation of the motor cannot be properly adjusted and adapt to the change of load torque; followed by The actual speed of the motor cannot be accurately controlled. Since the constant U/f frequency converter is a speed open-loop control, it can be seen from the mechanical characteristic diagram of the asynchronous motor that the set value is the stator frequency, which is the ideal no-load speed, and the actual speed of the motor is determined by the slip rate, so U/ The stable error existing in the f constant control method cannot be controlled, so the actual speed of the motor cannot be accurately controlled.
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05月 Common faults and corresponding countermeasures of soft starter in daily application The following analyzes the common faults and corresponding countermeasures of soft starters in daily applications: 1. During the debugging process, there is a phase loss fault reported at the start, the soft starter fault light is on, and the motor does not respond. The reason for the failure may be:
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05月 The influence of the distance between the inverter and the motor on the system and the measures In the industrial use site, the distance between the inverter and the motor can be roughly divided into three situations: long distance, medium distance and short distance. Within 20m is short distance, 20-100m is medium distance, and above 100m is long distance.
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05月 The development of frequency converter: energy saving and intelligence play the leading role Energy saving and emission reduction is the core value of my country's industrial economic development since the "Twelfth Five-Year Plan". While pointing out the direction for the sustainable development of my country's industry, it effectively drives the sustainable development of my country's inverter industry, making my country's inverter industry.
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05月 Domestic inverters will eventually defeat the monopoly situation of foreign inverters With the gradual maturity of localized production, scale and technology, domestic brands usually have price advantages, and the improvement of quality has also significantly increased the cost performance of domestic inverters, and the market demand will become more and more inclined to the domestic market. It will eventually break the long-term monopoly of foreign inverters, and domestic manufacturers will also form well-known brands.
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05月 Rihong inverter shines brightly at the promotion conference in Yueyang, Hunan On March 15, 2016, Rihong Inverter held a product promotion conference in Yueyang City, Hunan Province. Rihong's inverter and soft starter made all the participants shine. The excellent and stable product performance has attracted the attention of many visitors, and there is an endless stream of people who come to consult.