Energy-saving asynchronous servo equipment
A kind of servo equipment, energy-saving technology, applied in the field of energy-saving asynchronous servo equipment, can solve the problems of unstable hydraulic system, expensive energy saving of synchronous servo, and inability to fine-tune the motor, etc., to achieve the effect of improving production efficiency
Inactive Publication Date: 2017-05-17
NINGXIA QIKAI ENERGY SAVING EQUIP
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Problems solved by technology
The speed of the motor changes with the frequency of the power supply and the slip rate at the same time. The first generation of energy saving adopts frequency conversion technology, which only considers the adjustment of the frequency to the speed of the motor, but does not consider the influence of the slip rate on the speed of the motor, resulting in instability of the hydraulic system. The production efficiency of the injection molding machine is reduced, and the power saving rate is low. This is because the frequency conversion has no feedback system, and the influence of the load on the motor speed cannot be monitored and fed back at all times. The motor speed cannot be fine-tuned, and the actual speed and the command speed cannot be very close near
[0004] Because there are fatal shortcomings of frequency conversion energy saving, and synchronous servo energy saving is very expensive, complex transformation, and difficult after-sales service
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[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0016] Such as figure 1 As shown, an energy-saving asynchronous servo device includes a linkage switch RST connected to a three-phase power supply, a 380V to 220V transformer T, a motor M, and an injection molding machine controller. The linkage switch RST is connected to a 380V to 220V transformer. It also includes an asynchronous servo driver, an LED display circuit board, an isolation circuit board and a relay control circuit, the linkage switch RST is respectively connected to the asynchronous servo driver and the relay control circuit, and the asynchronous servo driver is connected to the LED ...
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The invention discloses energy-saving asynchronous servo equipment. The energy-saving asynchronous servo equipment comprises a linked switch RST connected with a three-phase power source, a 380V-to-220V transformer T, a motor M and an injection molding machine controller, wherein the linked switch RST is connected with the 380V-to-220V transformer. The energy-saving asynchronous servo equipment further comprises an asynchronous servo driver, an LED display circuit board, an isolation circuit board and a relay control circuit. The linked switch RST is connected with the asynchronous servo driver and the relay control circuit. The asynchronous servo driver is connected with the LED display circuit board and the relay control circuit. The relay control circuit is connected with the motor M, the LED display circuit board and the injection molding machine controller. The LED display circuit board is connected with the isolation circuit board. The isolation circuit board is connected with the injection molding machine controller. The energy-saving asynchronous servo equipment has the advantages of being accurate in control, low in cost, high in performance cost ratio and reliable in work.
Description
technical field [0001] The invention relates to a servo control device, in particular to an energy-saving asynchronous servo device. Background technique [0002] The speed formula of asynchronous motor is: N=120f / p(1-s), N motor speed, f power frequency, p [0003] Number of magnetic poles, s——slip rate. For p=6 (the number of magnetic poles is 6), the synchronous speed=120×50 / 6=1000 rev / min. Among them, 120f / p is determined by the motor, and (1-s) is determined by the load, the greater the load, the greater the slip. The speed of the motor changes with the frequency of the power supply and the slip rate at the same time. The first generation of energy saving adopts frequency conversion technology, which only considers the adjustment of the frequency to the speed of the motor, but does not consider the influence of the slip rate on the speed of the motor, resulting in instability of the hydraulic system. The production efficiency of the injection molding machine is reduc...
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IPC IPC(8): B29C45/76
CPCB29C45/76
Inventor 卡文艳季晓刚
Owner NINGXIA QIKAI ENERGY SAVING EQUIP