A HYBRID SWITCHING LOSS REDUCTION TECHNIQUE ALONG WITH INDEPENDENT CONTROL OF TWO THREE PHASE LOADS FOR NINE SWITCH SPACE VECTOR MODULATED INVERTER

作者：S KRISHNARAJ; Dr S HIM**ATHI

来源：International Journal of Engineering Science and Technology, 2011.

• Harmonic distortion
• induction motor drives
• Power conversion efficiency
• permanent magnet (PM)
• Pulse width modulation (PWM)
• space vector
• switching loss
• voltage source inverter (VSI).

For industrial applications many motors are used and the converter which drives the motor produces enormous losses and inject harmonics into the system . For example, motors are used to manipulate industrial robots, electric vehicles with in-wheel motors and electric trains. For controlling the PM motors there are two methods existing they are providing an inverter to control each motor, andconnecting the motors in parallel and driving them with a single inverter. The first method makes an experimental apparatus complex and expensive; the second does not allow independent control of eachmotor because of differences in rotor angle between the two motors. Thus, we propose a hybrid nineswitch inverter that can independently control two three-phase loads and also reduces the switching lossesgreatly. This paper introduces the structure of the nine-switch nverter, which is made from nine switches and a hybrid switching loss reduction technique. The validity of the proposed inverter is verified through simulations and reduced switching loss will reduce the size of heat sinks leading a compact power converters.

• 出版日期2011