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180v Dc Motor Control

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2 Threads found on edaboard.com: 180v Dc Motor Control
Hello, I am trying to build a full wave controlled rectifier for 1 HP 180v 5.5A DC motor. Please guide me about how to proceed with design and how to choose which power device to use and what its rating should be?
Have a DC(pm type ) motor 180v, Full Load Current ~ 3A (1 HP) I was using a circuit with 555 generating square waves and PWM (modulated) to control speed. Was using IRF250N. When driving a small motor was OK but when using as above the MOSFET was destroyed. Can anybody suggest a snubber ckt for the above combination. (...)