Is there a limit to how many power armor frames can be obtained? [duplicate]

In Fallout 4, you can obtain power armor frames (the base for the armor - not the workstation) in a few ways. The ones I know of are:

• Fixed/Quest related ones (such as the ones placed at vertibird crash sites)
• From vendors
• From pickpocketing fusion cores from armored enemies, causing them to step out of their frames

Are any of these sources renewable? If so, which ones?

If they are, I wouldn't feel so bad killing enemies rather than stealing their cores. I basically want to know if any of these sources respawn.

As far as I can tell, there's no limit. You'll find several in the game and can buy frames from certain merchants.

I've left several suits of armor at Sanctuary Hills and they've stayed there throughout the game.

You can also assign companions to wear Power Armor and they'll generally keep it on, even after you dismiss them.

Fixed Power Armor locations, such as at Vertibkrds do not respawn, nor do frames in merchant inventories. That said, even between these two sources alone, there are dozens of Power Armor frames around the wasteland - you won't run out.

Should you really feel you need more power armor, however, power armored enemies such as raiders, Brotherhood of Steel members, and others will respawn occasionally, and will also spawn during random encounters such as settlement raids as your game progresses. If you don't mind stealing fusion cores and searching the world a bit, there is a functionally unlimited supply of Power Armor to be had.

Are any of these sources renewable? If so, which ones?

In Lexington the raider on the bridge and the one at the top of the fire escape have respawned for me. If they can keep respawning again and again after you clear the area then you could keep stealing their frames as often as they respawn.