Frequency converter and soft starter comprehensive experimental device
A technology of soft starters and experimental devices, applied in measuring devices, instruments, measuring electrical variables, etc., can solve problems such as investing a lot of money, and achieve the effect of saving space and funds
Inactive Publication Date: 2009-12-30
上海亿盟电气自动化技术有限公司
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Implementing both methods separa
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[0009] Such as figure 1 As shown, in the comprehensive experiment device of frequency converter and soft starter of the present invention, the three-phase power supply (R, S, T) is sent to the frequency converter or soft starter device. The motor (M) is controlled via the control output voltage (U1, V1, W1) of the frequency converter or soft starter. The motor (M) drives the DC generator (A), and the resistance (R3-----R10) is selected to keep the load within the adjusted range.
[0010] When using a frequency converter, use a power dissipation resistor (R2) to make the motor brake normally when it stops. When using a soft starter, use the control terminals (K22, K24) and the bypass AC contactor (KM) to switch the motor to the bypass AC contactor (KM) at the end of the start.
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The invention relates to a frequency converter and soft starter comprehensive experimental device, which comprises a three-phase power supply, a circuit breaker, a voltage regulator, a frequency converter, a soft starter, a motor, a direct current generator, a resistor, an energy consumption resistor, a control terminal and a bypass alternating current contactor, wherein the three-phase power supply is connected with the circuit breaker; the circuit breaker is connected with the voltage regulator; the voltage regulator is connected with the frequency converter and the soft starter respectively; the frequency converter and the soft starter are connected with the motor; the motor is connected with the direct current generator; the direct current generator is connected with the resistor; the frequency converter is connected with the energy consumption resistor; the soft starter is connected with the control terminal and the bypass alternating current contactor respectively; and the motor is connected with the bypass alternating current contactor. Compared with the prior art, the frequency converter and soft starter comprehensive experimental device has the advantages of avoiding using various devices for doing all tests and saving floor area occupation and funds.
Description
technical field [0001] The invention relates to the testing of frequency converters and soft starters, in particular to a comprehensive experimental device for frequency converters and soft starters. Background technique [0002] At present, soft starters mostly use the method of amplifying the current signal of a low-power motor to test the starting performance. The frequency converter uses the motor (group) test current method to achieve control performance. There is actually no essential difference between the two methods. Implementing both methods separately requires a lot of investment. Contents of the invention [0003] The object of the present invention is to provide a comprehensive experimental device for frequency converter and soft starter with simple structure in order to overcome the above-mentioned defects in the prior art. [0004] The object of the present invention can be realized through the following technical solutions: frequency converter and soft s...
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Inventor 刘杰
Owner 上海亿盟电气自动化技术有限公司
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