id	keyword
ctmj-111	pwm
ctmj-111	voltage
ctmj-111	phase
ctmj-111	current
ctmj-111	journal
ctmj-111	medicine
ctmj-111	control
ctmj-111	engine
ctmj-111	fig
ctmj-111	inverter
ctmj-111	recurrence
ctmj-111	modulation