Train emergency ventilation inverter
An inverter and emergency technology, which is applied in the field of train emergency ventilation inverters, can solve problems such as non-expandability, large electromagnetic interference, and inverter malfunction, and achieve good adaptability, scalability, and loading performance Good, reliable results
Pending Publication Date: 2018-11-23
张立明
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Problems solved by technology
The main problem of this solution is: when the emergency ventilation inverter does not receive the start signal, its internal chopper boost circuit is still working, and the electromagnetic interference generated by it will cause the inverter to malfunction or cause damage to other surrounding equipment. Certain adverse effects, after receiving the start signal, the chopper boost circuit and the inverter circuit work together, the electromagnetic interference is greater, it is easy to affect other equipment on the train, so that other equipment cannot work normally; the interface has a single function and does not have Rich scalability
Method used
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Embodiment 1
[0042] Such as figure 1 As shown, a train emergency ventilation inverter includes a DC filter 1, a DC chopper booster 2 and a frequency converter 3 connected in series in sequence; the input end of the DC filter is connected to the 110VDC input end;
[0043] Such as figure 2 , image 3 with Figure 4 As shown, the DC chopper booster 2 includes a DC chopper main circuit 21, a DC chopper control circuit 22, a PWM generator 23 and a multi-channel DC power supply 24; the inside of the DC chopper main circuit 21 is provided with an IGBT / MOS tube temperature sensor, output current sensor and output voltage sensor; the output end of the DC chopper control loop 22 is connected to the DC chopper booster fault signal 25 and the frequency converter start signal 31; the input end of the PWM generator 23 is connected to the train start signal 11. The multiple DC power supply 24 provides various voltages required by the DC chopper control loop 22 and the PWM generator 23 .
[0044] The...
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The invention discloses a train emergency ventilation inverter. The train emergency ventilation inverter comprises a direct current filter, a direct current chopper booster and a frequency converter which are connected in series in sequence, wherein the direct current chopper booster comprises a direct current chopper main loop, a direct current chopper control loop, a PWM(Pulse Width Modulation)generator and a multi-path direct current power supply, and an IGBT / MOS(Insulated Gate Bipolar Transistor / Metal Oxide Semiconductor) tube temperature sensor, an output current sensor and an output voltage sensor are arranged in the direct current chopper main loop. According to the train emergency ventilation inverter, the direct current chopper booster only begins to work when the battery voltage is normal and receives train starting signal, and normally does not generate electromagnetic noise to cause the frequency converter to generate a false alarm fault. The chopper booster can not sendinversion starting signal when the chopper booster breaks down, and the frequency converter does not work. The train emergency ventilation inverter provided by the invention has a very good inversionfunction, is reliable and stable in work and long in service life; due to the wide voltage use range of the direct current chopper booster, the frequency converter can modulate the voltage accordingto needs, can be applied to a variety of vehicle models, and the whole vehicle loading performance is good.
Description
technical field [0001] The invention relates to the technical field of inverters, in particular to an inverter for train emergency ventilation. Background technique [0002] Most of the currently available train emergency ventilation inverters adopt the following scheme: the 110V input DC voltage is boosted by chopping to a DC voltage of about 550V, and then filtered and stabilized by a large-capacity capacitor and then sent to the DC-AC inverter. Converter, converted into a voltage output of about 350VAC, for the use of ventilators. The main problem of this solution is: when the emergency ventilation inverter does not receive the start signal, its internal chopper boost circuit is still working, and the electromagnetic interference generated by it will cause the inverter to malfunction or cause damage to other surrounding equipment. Certain adverse effects, after receiving the start signal, the chopper boost circuit and the inverter circuit work together, the electromagnet...
Claims
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IPC IPC(8): H02M3/04H02M7/5387H02M1/088
CPCH02M1/088H02M3/04H02M7/53875
Inventor 张立明
Owner 张立明