Abstract
This paper proposes a suitable power supply for driving linear induction motors. The power supply consists of a voltage source inverter (VSI) and a magnetic energy recovery switch (MERS). Circuit configuration and operation principles of the power supply are described. Power factor correction by MERS can cause an increase of the output power. Technical advantages of using MERS compared with increasing voltage rating of VSI are discussed. Some experiments with a linear induction motor were conducted. The results confirms that MERS can reduce capacity of the VSI or increase output with the same VSI capacity. The number of devices and losses are evaluated on large scale drive system. A half-bridge type of MERS is proposed and discussed. The half-bridge MERS improves disadvantages of using MERS.
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