1. Therefore, a controllable couplers used pulse width modulation.

2. The output of PWM(pulse width modulation)was automatically adjusted by TL494 to control the field current of the generator, which accomplished stabilizing output v.

3. A new Space Vector Pulse Width Modulation ( SVPWM ) method based on control factor is proposed.

4. On the other hand, the use of pulse width modulation (PWM) inverter for BLDCM leads to a high increase of core loss.

5. In addition, the pulse width modulation A/D conversion mode is adopted, whose merit is high-precision.

6. Based on the phase shift pulse width modulation technology, the mathematical non-linear model is developed.

7. C - Realize the single chip pulse width modulation process to achieve!

8. Several PWM techniques, such as sinusoidal waveform pulse width modulation, quasi sinusoidal waveform pulse width modulation and cell pulse width modulation, are given.

9. The inverse control method for pulse width modulation ( PWM ) inverter - fed induction motors is discussed.

10. Pulse width modulation code integrity, and can be used directly.

11. The operating principle of space vector pulse width modulation (SVPWM) is first described, and then the proposed self-tuning space current vector PWM (STPWM) technique is introduced.

12. However, Pulse Width Modulation (PWM) which was input from inverter is characterized by steep rising edge and high frequency, resulting in the too early failure of motor insulation.

13. Through analyzing cutting waves and pulse width modulation, a new method of tracing current is presented.

14. Realized the space vector pulse width modulation based on input variable which is reference variable of two-phase static coordinate, and optimized it for less switch waste.

15. The simplest way to process power is using pulse width modulation ( PWM ) control of the switch.

16. Therefore, we use unipolar switching pulse width modulation scheme to realize a filterless Class - D power amplifier.

17. It consists of a doubly fed induction generator(DFIG)and a voltage-source pulse width modulation(PWM)rectifier-inverter used, as an AC exciter.

18. The single-channel multipolar resolver is used as the angle sensor and the monolithic high-power pulse width modulation(PWM) power amplifier is also used.

19. Most drive systems offer a choice between transistorized silicone-controlled rectifiers and pulse width modulation over the full range of amplified voltages.

20. The system adopts sinusoidal permanent-magnet synchro motor. Control policy mainly applies spatial vector pulse width modulation algorithm.

21. This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation, at the same time the results are given.

22. It also includes, Hall element inputs, a sequencer for commutation control, fixed off time pulse width modulation (PWM) current control and locked rotor protection.

23. The single phase H-bridge inverter can generate common-mode voltage due to the sine pulse width modulation(SPWM)and vector controller.

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24. The asynchronous machine is fed by cascaded multilevel inverter, and the inverter switching signals are generated by carrier phaseshifted pulse width modulation method.

25. High - speed on - off valves are used and controlled with pulse width modulation ( PWM ) in this system.

26. A symbol synchronization method for digital communication is proposed, and it is a indirectly inserted pilot frequency based on pulse width modulation (PWM).

27. Position control of d . c . motors has been done by means of pulse width modulation.