id	keyword
ctmj-122	pwm
ctmj-122	voltage
ctmj-122	phase
ctmj-122	current
ctmj-122	journal
ctmj-122	medicine
ctmj-122	control
ctmj-122	engine
ctmj-122	fig
ctmj-122	inverter
ctmj-122	recurrence
ctmj-122	modulation