Description: 中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。
对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。-induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz - 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW Platform: |
Size: 5144 |
Author:wq57 |
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Description: 中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。
对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。-induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz- 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW Platform: |
Size: 5120 |
Author:wq57 |
Hits:
Description: PWM控制技术是逆变电路中应用最广泛的技术。为了对PWM型逆变电路进行分析，从PWM控制的基本原理出发，首先建立了逆变器控制所需的电路模型，采用IGBT作为开关器件，并对单相桥式电压型逆变电路和PWM控制电路的工作原理进行了分析。使用双踪示波器对电路的输出波形进行分析，给出了仿真波形。实践表明：运用PWM控制技术能够很好地实现逆变电路的运行要求-PWM control of inverter circuit technology is the most widely used technology. PWM inverter in order to analyze the circuit, from the basic principles of PWM control, the first set up the required inverter control circuit model, using IGBT as a switching device, and single-phase bridge voltage-type inverter circuit and the PWM The working principle of the control circuit is analyzed. Using a dual trace oscilloscope to the circuit' s output waveform analysis, the simulation waveform. Practice shows that: the use of PWM control technique able to achieve the operational requirements inverter circuit Platform: |
Size: 31744 |
Author:班小栓 |
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Description: 在Xilinx公司的Spartan ⅡE系列的XC2S100E pq-208 FPGA芯片上完成PWM波和SPWM波控制信号，控制电力电子器件IGBT和MOSFET构成的斩波、逆变输出电路，实现直流稳压和SPWM交流调频输出。-In Xilinx' s Spartan Ⅱ E Series XC2S100E pq-208 FPGA chip to complete SPWM wave PWM control signal wave and control the power electronic devices consisting of IGBT and MOSFET chopper, inverter output circuit, DC power and frequency output SPWM AC . Platform: |
Size: 4096 |
Author:申小强 |
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Description: sine-PWM inverter, In this simulation, we will study Sine-∆ Pulse Width Modulation (PWM) technique. We will use the SEMIKRON® IGBT Flexible Power Converter for this purpose.-sine-PWM inverter, In this simulation, we will study Sine-∆ Pulse Width Modulation (PWM) technique. We will use the SEMIKRON® IGBT Flexible Power Converter for this purpose. Platform: |
Size: 307200 |
Author:dark |
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Description: This example of AC-DC-AC converter illustrates use of Universal Bridge, Multimeter, and Powergui blocks, as well as discrete control blocks of the Extras library.-A 60 Hz, voltage source feeds a 50 Hz, 50 kW load through an AC-DC-AC converter. The 600V, 60 Hz voltage obtained at secondary of the Wye/Delta transformer is first rectified by a six pulse diode bridge. The filtered DC voltage is applied to an IGBT two-level inverter generating 50 Hz. The IGBT inverter uses Pulse Width Modulation (PWM) at a 2 kHz carrier frequency. The circuit is discretized at a sample time of 2 us Platform: |
Size: 13312 |
Author:马洪雨 |
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Description:
Single-Phase PWM Inverter
This demonstration illustrates use of the IGBT/Diode block in voltage-sourced converters. It also demonstrates harmonic analysis of PWM waveforms using the Powergui/FFT tool. Platform: |
Size: 10240 |
Author:iman14 |
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Description: In this paper an approach to estimate the speed and
the stator flux linkage of a three Phase induction motor by
means of an algorithm using dSPACE is proposed. Emphasis
is given on reduction of the problem of saturation associated
with the pure integrator, while flux estimation. Speed is
estimated using a sensor (MOC7811) mounted at the motor
shaft. Experimental investigation is carried out on a 1 H.P.
motor, a digital inverter controller, an IGBT power module
for inverter/chopper and dSPACE Controller Board
(CP1104). Real time signals like three phase currents, PWM
Pulses, fixed DC link voltage and response of sensor
MOC7811 are the input parameters to the Dspace controller
board, and using these parameters stator flux and speed is
estimated. Platform: |
Size: 661504 |
Author:haimp |
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