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:
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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