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Abstract: A multi-mode carrier-based PWM strategy for open-end winding permanent-magnet synchronous motor (OW-PMSM) with isolated DC sources is proposed in this paper. For the proposed strategy, the independent reference voltages of both the two inverters are obtained by decomposing the reference voltage output from the controller.
Highlights are put on the non-zero vector PWM strategies (AZSPWM, RSPWM and NSPWM), scalar PWM strategies (PSC-PWM, CPPM) as well as modifications to compensate dead-time CMV spikes, quick polarity reverse in line-to-line voltage pulse and linearity modulation range limitation.
PWM techniques are a method of controlling the voltage and current in a machine. The most distinguished feature of these PWM techniques is that the required switching sequences can be generated by comparing a modulating wave with a common triangle. These PWM techniques employ sequence, which uses only two redundant zero voltage vectors (0 and 63) in each sector.
Due to the influence of modulation depth to the output performance, in every PWM algorithm, change the modulation index M ( (2)) from 0 to 0.91 (step size is set to 0.1) to simulate output CMV and phase current.
These SVPWM techniques produce higher distortion compared to other PWM methods. However, they are easily implemented on a controller that does not allow modification in carrier signal or initial state of modulating signal within a fundamental cycle. These techniques have been successfully tested by converting Simulink block set into C-code.
For all six PWM techniques, the Mmax values are 1.154. This is derived from the equation where Vp1 is the fundamental phase voltage and Vdc represents the dc link voltage. Initially, the dwell times are obtained to evaluate HDF.
In order to improve the lifespan of three-phase three-level neutral-point clamped (3P-3L-NPC) inverters, this paper proposes a new pulse width modulation (PWM) strategy that …
Abstract: A multi-mode carrier-based PWM strategy for open-end winding permanent-magnet synchronous motor (OW-PMSM) with isolated DC sources is proposed in …
A PWM rectifier based on a new convergence law SMC is adopted to achieve stable control on the DC voltage side during load changes. Reference proposes a position-free control strategy based on the sliding mode …
El PWM, como concepto general, es la abreviatura de Pulse Width Modulated, lo cual se utiliza como atributo para una señal de control que generalmente se utiliza para …
The proposed PWM technique (120BCM) is based on a partial modulation of the injected phase current; thereby, switching losses can be significantly reduced, compared to the …
These PWM techniques are successfully tested by converting Simulink block set into C-code. This paper investigates the performance of PWM techniques at different values of …
The power flow of the SC module is controlled by the duty cycle generated by the PWM which is a resulting action on the net change in the measured current. A fully-active …
This study proposes a low complex and high efficient dual-reference voltage-based pulse width modulation (DRV-PWM) scheme for three-phase five-level hybrid active …
2.8k,3,6。PDM(pulse density modulation),PWM(pulse width modulation),PWM,PDM …
Therefore, a method for adapting the switching frequency of the drive inverter during runtime when high accuracy is not required is presented in this paper. The method includes the …