Number Of pulses And Levels As Inverter
Author: Source: Datetime: 2016-09-30 17:02:06
The pulse wave number refers to the AC output voltage in the cycle, the DC side of the number of pulse waveform. In a current-source inverter, the number of direct-current (DC) pulses, in the case of voltage-based inverters, the number of times the DC current is pulsating. This pulse number and AC output voltage within a cycle of commutation is caused by the number. In general, if the number of pulses is m, the inverters are called m-phase inverters.
The number of pulses and the number of levels of the PWM inverter
The number of levels of the PWM inverter is the number of voltage levels in each cycle of the output voltage. Write level is 3, the output fundamental wave half a cycle of the pulse number is called the PWM inverter pulse number, in the three-phase inverter, this pulse is the basic cycle of the same period with the switching device Conduction frequency, which is equal to the carrier frequency and frequency of the base ring.
The number of steps of a voltage-type inverter
The number of steps of a voltage-type inverter means the number of steps, the number of steps, and the number of levels of the output voltage waveform included in one cycle.
Delta inverter concept
The current inverter is in the direction of the application of the power parameter compensation of partial power inversion from the power supply mode of full power inverters to the direction of power supply power quality controller by the power full power form converter. This development separates Delta inverters.
The so-called Delta inverter, is the power parameter voltage or current increment of the modulation wave as the command value of the signal, the PWM high-frequency inverter to control, to reproduce the proportion of voltage or current increment And waveform of a new inverter, the purpose of the mains voltage or input current to compensate for incremental changes to improve the power quality of electricity.
Delta inverter main application areas are as follows
The mains voltage fluctuation, harmonic and asymmetry to compensate for the series or well-connected AC regulated power supply,
- A series or well type AC active power filter and a static var generator for compensating the reactive current, harmonic current and asymmetrical current of the load;
- Power quality comprehensive compensation and control of the mains power quality comprehensive compensator, used in powerd istribution and integrated power flow controller used in the transmission network;
- It is applied to series-parallel compensated UPS or well-regulated UPS.
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